/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(IList<Vector3> points, IList<Vector3> outputSurfacePoints)
{
var rawPoints = new QuickList<Vector3>(BufferPools<Vector3>.Locking, BufferPool.GetPoolIndex(points.Count));
rawPoints.AddRange(points);
GetConvexHull(ref rawPoints, outputSurfacePoints);
rawPoints.Dispose();
}
/// <summary>
/// Casts a convex shape against the collidable.
/// </summary>
/// <param name="castShape">Shape to cast.</param>
/// <param name="startingTransform">Initial transform of the shape.</param>
/// <param name="sweep">Sweep to apply to the shape.</param>
/// <param name="hit">Hit data, if any.</param>
/// <returns>Whether or not the cast hit anything.</returns>
public override bool ConvexCast(CollisionShapes.ConvexShapes.ConvexShape castShape, ref RigidTransform startingTransform, ref Vector3f sweep, out RayHit hit)
{
hit = new RayHit();
BoundingBox localSpaceBoundingBox;
castShape.GetSweptLocalBoundingBox(ref startingTransform, ref worldTransform, ref sweep, out localSpaceBoundingBox);
var tri = PhysicsThreadResources.GetTriangle();
var hitElements = new QuickList <int>(BufferPools <int> .Thread);
if (Shape.GetOverlaps(localSpaceBoundingBox, ref hitElements))
{
hit.T = float.MaxValue;
for (int i = 0; i < hitElements.Count; i++)
{
Shape.GetTriangle(hitElements.Elements[i], ref worldTransform, out tri.vA, out tri.vB, out tri.vC);
Vector3f center;
Vector3f.Add(ref tri.vA, ref tri.vB, out center);
Vector3f.Add(ref center, ref tri.vC, out center);
Vector3f.Multiply(ref center, 1f / 3f, out center);
Vector3f.Subtract(ref tri.vA, ref center, out tri.vA);
Vector3f.Subtract(ref tri.vB, ref center, out tri.vB);
Vector3f.Subtract(ref tri.vC, ref center, out tri.vC);
tri.MaximumRadius = tri.vA.LengthSquared;
float radius = tri.vB.LengthSquared;
if (tri.MaximumRadius < radius)
{
tri.MaximumRadius = radius;
}
radius = tri.vC.LengthSquared;
if (tri.MaximumRadius < radius)
{
tri.MaximumRadius = radius;
}
tri.MaximumRadius = (float)Math.Sqrt(tri.MaximumRadius);
tri.collisionMargin = 0;
var triangleTransform = new RigidTransform {
Orientation = Quaternion.Identity, Position = center
};
RayHit tempHit;
if (MPRToolbox.Sweep(castShape, tri, ref sweep, ref Toolbox.ZeroVector, ref startingTransform, ref triangleTransform, out tempHit) && tempHit.T < hit.T)
{
hit = tempHit;
}
}
tri.MaximumRadius = 0;
PhysicsThreadResources.GiveBack(tri);
hitElements.Dispose();
return(hit.T != float.MaxValue);
}
PhysicsThreadResources.GiveBack(tri);
hitElements.Dispose();
return(false);
}
unsafe void Refine(int workerIndex)
{
var spareNodes = new QuickList <int>(Pool, 8);
var subtreeReferences = new QuickList <int>(Pool, BufferPool <int> .GetPoolIndex(MaximumSubtrees));
var treeletInternalNodes = new QuickList <int>(Pool, BufferPool <int> .GetPoolIndex(MaximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(Pool, MaximumSubtrees, out buffer, out region, out resources);
int refineIndex;
while ((refineIndex = Interlocked.Increment(ref RefineIndex)) < RefinementTargets.Count)
{
subtreeReferences.Count = 0;
treeletInternalNodes.Count = 0;
bool nodesInvalidated;
Tree.BinnedRefine(RefinementTargets.Elements[refineIndex], ref subtreeReferences, MaximumSubtrees, ref treeletInternalNodes, ref spareNodes, ref resources, out nodesInvalidated);
//Allow other refines to traverse this node.
Tree.nodes[RefinementTargets.Elements[refineIndex]].RefineFlag = 0;
}
Tree.RemoveUnusedInternalNodes(ref spareNodes);
region.Dispose();
Pool.GiveBack(buffer);
spareNodes.Dispose();
subtreeReferences.Count = 0;
subtreeReferences.Dispose();
treeletInternalNodes.Count = 0;
treeletInternalNodes.Dispose();
}
public unsafe void GetSelfOverlapsViaQueries <TResultList>(ref TResultList results) where TResultList : IList <Overlap>
{
var leafQueryResults = new QuickList <int>(BufferPools <int> .Thread);
for (int i = 0; i < leafCount; ++i)
{
var leaf = leaves[i];
BoundingBoxWide leafBoundingBox;
BoundingBoxWide.GetBoundingBox(ref Levels[leaf.LevelIndex].Nodes[leaf.NodeIndex].BoundingBoxes, leaf.ChildIndex, out leafBoundingBox);
TestRecursive(0, 0, ref leafBoundingBox, ref leafQueryResults);
for (int j = 0; j < leafQueryResults.Count; ++j)
{
//Only include results which which are forward in the list to avoid self tests.
if (i < leafQueryResults.Elements[j])
{
results.Add(new Overlap {
A = i, B = leafQueryResults.Elements[j]
});
}
}
leafQueryResults.Count = 0;
}
leafQueryResults.Dispose();
//Console.WriteLine("Query-based results:");
//for (int i = 0; i < results.Count; ++i)
//{
// Console.WriteLine($"{results[i].A}, {results[i].B}");
//}
}
/// <summary>
/// Executes one pass of bottom-up refinement.
/// </summary>
public unsafe void BottomUpBinnedRefine(int maximumSubtrees)
{
//If this works out, should probably choose a more efficient flagging approach.
//Note the size: it needs to contain all possible internal nodes.
//TODO: This is actually bugged, because the refinement flags do not update if the nodes move.
//And the nodes CAN move.
var pool = BufferPools <int> .Thread;
var spareNodes = new QuickList <int>(pool, 8);
var subtreeReferences = new QuickList <int>(pool, BufferPool <int> .GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList <int>(pool, BufferPool <int> .GetPoolIndex(maximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(pool, maximumSubtrees, out buffer, out region, out resources);
var refinementFlags = new int[leafCount * 2 - 1];
for (int i = 0; i < nodeCount; ++i)
{
refinementFlags[i] = 0;
}
for (int i = 0; i < leafCount; ++i)
{
TryToBottomUpBinnedRefine(refinementFlags, leaves[i].NodeIndex, maximumSubtrees, ref subtreeReferences, ref treeletInternalNodes, ref resources, ref spareNodes);
//Validate();
}
//Console.WriteLine($"root children: {nodes->ChildCount}");
RemoveUnusedInternalNodes(ref spareNodes);
spareNodes.Dispose();
subtreeReferences.Dispose();
region.Dispose();
pool.GiveBack(buffer);
}
public unsafe void PartialRefine(int offset, int skip, ref QuickList <int> spareNodes, int maximumSubtrees, ref QuickList <int> treeletInternalNodes, ref BinnedResources binnedResources, out bool nodesInvalidated)
{
QuickList <int> subtreeReferences = new QuickList <int>(BufferPools <int> .Thread, BufferPool <int> .GetPoolIndex(maximumSubtrees));
PartialRefine(0, 0, offset, skip, ref subtreeReferences, ref treeletInternalNodes, ref spareNodes, maximumSubtrees, ref binnedResources, out nodesInvalidated);
subtreeReferences.Dispose();
}
internal void Dispose()
{
BlockedEdgeRegions.Dispose();
BlockedVertexRegions.Dispose();
VertexContacts.Dispose();
EdgeContacts.Dispose();
}
unsafe void ValidateStaging(Node *stagingNodes, ref QuickList <int> subtreeNodePointers, int treeletParent, int treeletIndexInParent)
{
int foundSubtrees, foundLeafCount;
QuickList <int> collectedSubtreeReferences = new QuickList <int>(BufferPools <int> .Thread);
QuickList <int> internalReferences = new QuickList <int>(BufferPools <int> .Thread);
internalReferences.Add(0);
ValidateStaging(stagingNodes, 0, ref subtreeNodePointers, ref collectedSubtreeReferences, ref internalReferences, out foundSubtrees, out foundLeafCount);
if (treeletParent < -1 || treeletParent >= nodeCount)
{
throw new Exception("Bad treelet parent.");
}
if (treeletIndexInParent < -1 || (treeletParent >= 0 && treeletIndexInParent >= nodes[treeletParent].ChildCount))
{
throw new Exception("Bad treelet index in parent.");
}
if (treeletParent >= 0 && (&nodes[treeletParent].LeafCountA)[treeletIndexInParent] != foundLeafCount)
{
throw new Exception("Bad leaf count.");
}
if (subtreeNodePointers.Count != foundSubtrees)
{
throw new Exception("Bad subtree found count.");
}
for (int i = 0; i < collectedSubtreeReferences.Count; ++i)
{
if (!subtreeNodePointers.Contains(collectedSubtreeReferences[i]) || !collectedSubtreeReferences.Contains(subtreeNodePointers[i]))
{
throw new Exception("Bad subtree reference.");
}
}
collectedSubtreeReferences.Dispose();
internalReferences.Dispose();
}
public void Dispose <TPool>(TPool pool) where TPool : IMemoryPool <int, TSpan>
{
AvailableIds.Dispose(pool);
//This simplifies reuse and makes it harder to use invalid data.
nextIndex = 0;
AvailableIds = new QuickList <int, TSpan>();
}
protected override void UpdateContainedPairs()
{
RigidTransform rtMesh = mesh.WorldTransform;
RigidTransform rtMobile = mobile.WorldTransform;
QuickList <Vector3i> overlaps = new QuickList <Vector3i>(BufferPools <Vector3i> .Thread);
mesh.ChunkShape.GetOverlaps(ref rtMesh, mobile.BoundingBox, ref overlaps);
for (int i = 0; i < overlaps.Count; i++)
{
Vector3i pos = overlaps.Elements[i];
ReusableGenericCollidable <ConvexShape> colBox = new ReusableGenericCollidable <ConvexShape>(mesh.ChunkShape.ShapeAt(pos.X, pos.Y, pos.Z, out Vector3 offs));
Vector3 input = new Vector3(pos.X + offs.X, pos.Y + offs.Y, pos.Z + offs.Z);
Vector3 transfd = Quaternion.Transform(input, rtMesh.Orientation);
RigidTransform outp = new RigidTransform(transfd + rtMesh.Position, rtMesh.Orientation);
colBox.WorldTransform = outp;
colBox.UpdateBoundingBoxForTransform(ref outp);
QuickList <Vector3i> overlaps2 = new QuickList <Vector3i>(BufferPools <Vector3i> .Thread);
mobile.ChunkShape.GetOverlaps(ref rtMobile, colBox.BoundingBox, ref overlaps2);
for (int x = 0; x < overlaps2.Count; x++)
{
Vector3i pos2 = overlaps2.Elements[x];
ReusableGenericCollidable <ConvexShape> colBox2 = new ReusableGenericCollidable <ConvexShape>(mobile.ChunkShape.ShapeAt(pos2.X, pos2.Y, pos2.Z, out Vector3 offs2));
colBox2.SetEntity(mobile.Entity);
Vector3 input2 = new Vector3(pos2.X + offs2.X, pos2.Y + offs2.Y, pos2.Z + offs2.Z);
Vector3 transfd2 = Quaternion.Transform(input2, rtMobile.Orientation);
RigidTransform outp2 = new RigidTransform(transfd2 + rtMobile.Position, rtMobile.Orientation);
colBox2.WorldTransform = outp2;
TryToAdd(colBox, colBox2, mesh.Entity?.Material ?? mobile.Entity?.Material);
}
overlaps2.Dispose();
}
overlaps.Dispose();
}
public void Flush(IThreadDispatcher threadDispatcher = null)
{
var deterministic = threadDispatcher != null && Simulation.Deterministic;
OnPreflush(threadDispatcher, deterministic);
//var start = Stopwatch.GetTimestamp();
flushJobs = new QuickList <NarrowPhaseFlushJob>(128, Pool);
PairCache.PrepareFlushJobs(ref flushJobs);
var removalBatchJobCount = ConstraintRemover.CreateFlushJobs(deterministic);
//Note that we explicitly add the constraint remover jobs here.
//The constraint remover can be used in two ways- sleeper style, and narrow phase style.
//In sleeping, we're not actually removing constraints from the simulation completely, so it requires fewer jobs.
//The constraint remover just lets you choose which jobs to call. The narrow phase needs all of them.
flushJobs.EnsureCapacity(flushJobs.Count + removalBatchJobCount + 4, Pool);
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintsFromBodyLists
});
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.ReturnConstraintHandles
});
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintFromBatchReferencedHandles
});
if (Solver.ActiveSet.Batches.Count > Solver.FallbackBatchThreshold)
{
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintsFromFallbackBatch
});
}
for (int i = 0; i < removalBatchJobCount; ++i)
{
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintFromTypeBatch, Index = i
});
}
if (threadDispatcher == null)
{
for (int i = 0; i < flushJobs.Count; ++i)
{
ExecuteFlushJob(ref flushJobs[i], Pool);
}
}
else
{
flushJobIndex = -1;
this.threadDispatcher = threadDispatcher;
threadDispatcher.DispatchWorkers(flushWorkerLoop);
this.threadDispatcher = null;
}
//var end = Stopwatch.GetTimestamp();
//Console.WriteLine($"Flush stage 3 time (us): {1e6 * (end - start) / Stopwatch.Frequency}");
flushJobs.Dispose(Pool);
PairCache.Postflush();
ConstraintRemover.Postflush();
OnPostflush(threadDispatcher);
}
/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(ref QuickList <Vector3> points, IList <Vector3> outputSurfacePoints)
{
var indices = new QuickList <int>(BufferPools <int> .Locking, BufferPool.GetPoolIndex(points.Count * 3));
GetConvexHull(ref points, ref indices, outputSurfacePoints);
indices.Dispose();
}
private static void RemoveInsidePoints(ref QuickList <Vector3> points, ref QuickList <int> triangleIndices, ref QuickList <int> outsidePoints)
{
var insidePoints = new QuickList <int>(BufferPools <int> .Locking);
//We're going to remove points from this list as we go to prune it down to the truly inner points.
insidePoints.AddRange(outsidePoints);
outsidePoints.Clear();
for (int i = 0; i < triangleIndices.Count && insidePoints.Count > 0; i += 3)
{
//Compute the triangle's plane in point-normal representation to test other points against.
Vector3 normal;
FindNormal(ref triangleIndices, ref points, i, out normal);
Vector3 p = points.Elements[triangleIndices.Elements[i]];
for (int j = insidePoints.Count - 1; j >= 0; --j)
{
//Offset from the triangle to the current point, tested against the normal, determines if the current point is visible
//from the triangle face.
Vector3 offset = points.Elements[insidePoints.Elements[j]] - p;
float dot = Vector3.Dot(offset, normal);
//If it's visible, then it's outside!
if (dot > 0)
{
//This point is known to be on the outside; put it on the outside!
outsidePoints.Add(insidePoints.Elements[j]);
insidePoints.FastRemoveAt(j);
}
}
}
insidePoints.Dispose();
}
public override void Update(Window window, Camera camera, Input input, float dt)
{
for (int iterationIndex = 0; iterationIndex < 100; ++iterationIndex)
{
var bodyIndicesToDeactivate = new QuickList <int>(Simulation.Bodies.ActiveSet.Count, BufferPool);
for (int i = 0; i < Simulation.Bodies.ActiveSet.Count; ++i)
{
bodyIndicesToDeactivate.AllocateUnsafely() = i;
}
Simulation.Sleeper.Sleep(ref bodyIndicesToDeactivate);
bodyIndicesToDeactivate.Dispose(BufferPool);
var setsToActivate = new QuickList <int>(Simulation.Bodies.Sets.Length, BufferPool);
for (int i = 1; i < Simulation.Bodies.Sets.Length; ++i)
{
if (Simulation.Bodies.Sets[i].Allocated)
{
setsToActivate.AllocateUnsafely() = i;
}
}
Simulation.Awakener.AwakenSets(ref setsToActivate);
setsToActivate.Dispose(BufferPool);
}
base.Update(window, camera, input, dt);
}
public void Flush(IThreadDispatcher threadDispatcher = null, bool deterministic = false)
{
OnPreflush(threadDispatcher, deterministic);
//var start = Stopwatch.GetTimestamp();
QuickList <NarrowPhaseFlushJob, Buffer <NarrowPhaseFlushJob> > .Create(Pool.SpecializeFor <NarrowPhaseFlushJob>(), 128, out flushJobs);
PairCache.PrepareFlushJobs(ref flushJobs);
//We indirectly pass the determinism state; it's used by the constraint remover bookkeeping.
this.deterministic = deterministic;
ConstraintRemover.CreateFlushJobs(ref flushJobs);
if (threadDispatcher == null)
{
for (int i = 0; i < flushJobs.Count; ++i)
{
ExecuteFlushJob(ref flushJobs[i]);
}
}
else
{
flushJobIndex = -1;
threadDispatcher.DispatchWorkers(flushWorkerLoop);
}
//var end = Stopwatch.GetTimestamp();
//Console.WriteLine($"Flush stage 3 time (us): {1e6 * (end - start) / Stopwatch.Frequency}");
flushJobs.Dispose(Pool.SpecializeFor <NarrowPhaseFlushJob>());
PairCache.Postflush();
ConstraintRemover.Postflush();
OnPostflush(threadDispatcher);
}
unsafe void RecursiveRefine(int nodeIndex, int maximumSubtrees, ref int treeSizeSeed, ref QuickList <int> treeletInternalNodes, ref QuickList <int> spareNodes, ref BinnedResources binnedResources, out bool nodesInvalidated)
{
QuickList <int> subtreeReferences = new QuickList <int>(BufferPools <int> .Thread, BufferPool <int> .GetPoolIndex(maximumSubtrees));
//Vary the size between 0.5 and 1 times the maximumSubtrees.
ulong halfMaximumSubtrees = (ulong)(maximumSubtrees / 2);
++treeSizeSeed;
var size = ((ulong)(treeSizeSeed * treeSizeSeed) * 413158511UL + 735632797UL) % halfMaximumSubtrees;
var targetSubtreeCount = (int)(size + halfMaximumSubtrees);
nodesInvalidated = false;
bool invalidated;
BinnedRefine(nodeIndex, ref subtreeReferences, targetSubtreeCount, ref treeletInternalNodes, ref spareNodes, ref binnedResources, out invalidated);
if (invalidated)
{
nodesInvalidated = true;
}
for (int i = 0; i < subtreeReferences.Count; ++i)
{
if (subtreeReferences.Elements[i] >= 0)
{
RecursiveRefine(subtreeReferences.Elements[i], maximumSubtrees, ref treeSizeSeed, ref treeletInternalNodes, ref spareNodes, ref binnedResources, out invalidated);
if (invalidated)
{
nodesInvalidated = true;
}
}
}
subtreeReferences.Count = 0;
subtreeReferences.Dispose();
}
public override void Update(double dt)
{
RigidTransform transform = new RigidTransform(mesh.Position);
RigidTransform convexTransform = convex.WorldTransform;
ContactRefresher.ContactRefresh(contacts, supplementData, ref convexTransform, ref transform, contactIndicesToRemove);
RemoveQueuedContacts();
var overlaps = new QuickList <Vector3i>(BufferPools <Vector3i> .Thread);
mesh.ChunkShape.GetOverlaps(mesh.Position, convex.BoundingBox, ref overlaps);
var candidatesToAdd = new QuickList <ContactData>(BufferPools <ContactData> .Thread, BufferPool <int> .GetPoolIndex(overlaps.Count));
for (int i = 0; i < overlaps.Count; i++)
{
if (!ActivePairs.TryGetValue(overlaps.Elements[i], out GeneralConvexPairTester manifold))
{
manifold = GetPair(ref overlaps.Elements[i]);
}
else
{
ActivePairs.FastRemove(overlaps.Elements[i]);
}
activePairsBackBuffer.Add(overlaps.Elements[i], manifold);
if (manifold.GenerateContactCandidate(out ContactData contactCandidate))
{
candidatesToAdd.Add(ref contactCandidate);
}
}
overlaps.Dispose();
for (int i = ActivePairs.Count - 1; i >= 0; i--)
{
ReturnPair(ActivePairs.Values[i]);
ActivePairs.FastRemove(ActivePairs.Keys[i]);
}
var temp = ActivePairs;
ActivePairs = activePairsBackBuffer;
activePairsBackBuffer = temp;
if (contacts.Count + candidatesToAdd.Count > 4)
{
var reducedCandidates = new QuickList <ContactData>(BufferPools <ContactData> .Thread, 3);
ContactReducer.ReduceContacts(contacts, ref candidatesToAdd, contactIndicesToRemove, ref reducedCandidates);
RemoveQueuedContacts();
for (int i = reducedCandidates.Count - 1; i >= 0; i--)
{
Add(ref reducedCandidates.Elements[i]);
reducedCandidates.RemoveAt(i);
}
reducedCandidates.Dispose();
}
else if (candidatesToAdd.Count > 0)
{
for (int i = 0; i < candidatesToAdd.Count; i++)
{
Add(ref candidatesToAdd.Elements[i]);
}
}
candidatesToAdd.Dispose();
}
/// <summary>
/// Cleans up after a multithreaded self test.
/// </summary>
public void CompleteSelfTest()
{
//Note that a tree with 0 or 1 entries won't have any jobs.
if (jobs.Span.Allocated)
{
jobs.Dispose(Pool);
}
}
/// <summary>
/// Cleans up after a multithreaded self test.
/// </summary>
public void CompleteTest()
{
//Note that we don't allocate a job list if there aren't any jobs.
if (jobs.Span.Allocated)
{
jobs.Dispose(Pool.SpecializeFor <Job>());
}
}
/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(IList <Vector3> points, IList <Vector3> outputSurfacePoints)
{
var rawPoints = new QuickList <Vector3>(BufferPools <Vector3> .Locking, BufferPool.GetPoolIndex(points.Count));
rawPoints.AddRange(points);
GetConvexHull(ref rawPoints, outputSurfacePoints);
rawPoints.Dispose();
}
public unsafe void TopDownAgglomerativeRefine()
{
var spareNodes = new QuickList <int>(BufferPools <int> .Thread, 8);
TopDownAgglomerativeRefine(0, ref spareNodes);
RemoveUnusedInternalNodes(ref spareNodes);
spareNodes.Dispose();
}
public void Flush(IThreadDispatcher threadDispatcher = null, bool deterministic = false)
{
OnPreflush(threadDispatcher, deterministic);
//var start = Stopwatch.GetTimestamp();
var jobPool = Pool.SpecializeFor <NarrowPhaseFlushJob>();
QuickList <NarrowPhaseFlushJob, Buffer <NarrowPhaseFlushJob> > .Create(jobPool, 128, out flushJobs);
PairCache.PrepareFlushJobs(ref flushJobs);
//We indirectly pass the determinism state; it's used by the constraint remover bookkeeping.
this.deterministic = deterministic;
var removalBatchJobCount = ConstraintRemover.CreateFlushJobs();
//Note that we explicitly add the constraint remover jobs here.
//The constraint remover can be used in two ways- deactivation style, and narrow phase style.
//In deactivation, we're not actually removing constraints from the simulation completely, so it requires fewer jobs.
//The constraint remover just lets you choose which jobs to call. The narrow phase needs all of them.
flushJobs.EnsureCapacity(flushJobs.Count + removalBatchJobCount + 3, jobPool);
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintsFromBodyLists
});
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.ReturnConstraintHandles
});
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintFromBatchReferencedHandles
});
for (int i = 0; i < removalBatchJobCount; ++i)
{
flushJobs.AddUnsafely(new NarrowPhaseFlushJob {
Type = NarrowPhaseFlushJobType.RemoveConstraintFromTypeBatch, Index = i
});
}
if (threadDispatcher == null)
{
for (int i = 0; i < flushJobs.Count; ++i)
{
ExecuteFlushJob(ref flushJobs[i], Pool);
}
}
else
{
flushJobIndex = -1;
this.threadDispatcher = threadDispatcher;
threadDispatcher.DispatchWorkers(flushWorkerLoop);
this.threadDispatcher = null;
}
//var end = Stopwatch.GetTimestamp();
//Console.WriteLine($"Flush stage 3 time (us): {1e6 * (end - start) / Stopwatch.Frequency}");
flushJobs.Dispose(Pool.SpecializeFor <NarrowPhaseFlushJob>());
PairCache.Postflush();
ConstraintRemover.Postflush();
OnPostflush(threadDispatcher);
}
/// <summary>
/// Removes redundant points. Two points are redundant if they occupy the same hash grid cell.
/// </summary>
/// <param name="points">List of points to prune.</param>
/// <param name="cellSize">Size of cells to determine redundancy.</param>
public static void RemoveRedundantPoints(IList<Vector3> points, double cellSize)
{
var rawPoints = new QuickList<Vector3>(BufferPools<Vector3>.Locking, BufferPool.GetPoolIndex(points.Count));
rawPoints.AddRange(points);
RemoveRedundantPoints(ref rawPoints, cellSize);
points.Clear();
for (int i = 0; i < rawPoints.Count; ++i)
{
points.Add(rawPoints.Elements[i]);
}
rawPoints.Dispose();
}
/// <summary>
/// Wakes up all bodies and constraints within a set. Doesn't do anything if the set is awake (index zero).
/// </summary>
/// <param name="setIndex">Index of the set to awaken.</param>
public void AwakenSet(int setIndex)
{
if (setIndex > 0)
{
ValidateSleepingSetIndex(setIndex);
//TODO: Some fairly pointless work here- spans or other approaches could help with the API.
var list = new QuickList <int>(1, pool);
list.AddUnsafely(setIndex);
AwakenSets(ref list);
list.Dispose(pool);
}
}
/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputTriangleIndices">List of indices into the input point set composing the triangulated surface of the convex hull.
/// Each group of 3 indices represents a triangle on the surface of the hull.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(IList<Vector3> points, IList<int> outputTriangleIndices, IList<Vector3> outputSurfacePoints)
{
var rawPoints = new QuickList<Vector3>(BufferPools<Vector3>.Locking, BufferPool.GetPoolIndex(points.Count));
var rawIndices = new QuickList<int>(BufferPools<int>.Locking, BufferPool.GetPoolIndex(points.Count * 3));
rawPoints.AddRange(points);
GetConvexHull(ref rawPoints, ref rawIndices, outputSurfacePoints);
rawPoints.Dispose();
for (int i = 0; i < rawIndices.Count; i++)
{
outputTriangleIndices.Add(rawIndices[i]);
}
rawIndices.Dispose();
}
/// <summary>
/// Removes redundant points. Two points are redundant if they occupy the same hash grid cell.
/// </summary>
/// <param name="points">List of points to prune.</param>
/// <param name="cellSize">Size of cells to determine redundancy.</param>
public static void RemoveRedundantPoints(IList <Vector3> points, double cellSize)
{
var rawPoints = new QuickList <Vector3>(BufferPools <Vector3> .Locking, BufferPool.GetPoolIndex(points.Count));
rawPoints.AddRange(points);
RemoveRedundantPoints(ref rawPoints, cellSize);
points.Clear();
for (int i = 0; i < rawPoints.Count; ++i)
{
points.Add(rawPoints.Elements[i]);
}
rawPoints.Dispose();
}
/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputTriangleIndices">List of indices into the input point set composing the triangulated surface of the convex hull.
/// Each group of 3 indices represents a triangle on the surface of the hull.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(IList <Vector3> points, IList <int> outputTriangleIndices, IList <Vector3> outputSurfacePoints)
{
var rawPoints = new QuickList <Vector3>(BufferPools <Vector3> .Locking, BufferPool.GetPoolIndex(points.Count));
var rawIndices = new QuickList <int>(BufferPools <int> .Locking, BufferPool.GetPoolIndex(points.Count * 3));
rawPoints.AddRange(points);
GetConvexHull(ref rawPoints, ref rawIndices, outputSurfacePoints);
rawPoints.Dispose();
for (int i = 0; i < rawIndices.Count; i++)
{
outputTriangleIndices.Add(rawIndices[i]);
}
rawIndices.Dispose();
}
/// <summary>
/// Releases all resources held by the context.
/// </summary>
public void Dispose()
{
if (!disposed)
{
CleanUp();
NodePairsToTest.Count = 0;
NodePairsToTest.Dispose();
for (int i = 0; i < ThreadCount; ++i)
{
WorkerOverlaps[i].Count = 0;
WorkerOverlaps[i].Dispose();
}
}
}
/// <summary>
/// Awakens a list of set indices.
/// </summary>
/// <param name="setIndices">List of set indices to wake up.</param>
/// <param name="threadDispatcher">Thread dispatcher to use when waking the bodies. Pass null to run on a single thread.</param>
public void AwakenSets(ref QuickList <int> setIndices, IThreadDispatcher threadDispatcher = null)
{
var uniqueSetIndices = new QuickList <int>(setIndices.Count, pool);
var uniqueSet = new IndexSet(pool, bodies.Sets.Length);
AccumulateUniqueIndices(ref setIndices, ref uniqueSet, ref uniqueSetIndices);
uniqueSet.Dispose(pool);
//Note that we use the same codepath as multithreading, we just don't use a multithreaded dispatch to execute jobs.
//TODO: It would probably be a good idea to add a little heuristic to avoid doing multithreaded dispatches if there are only like 5 total bodies.
//Shouldn't matter too much- the threaded variant should only really be used when doing big batched changes, so having a fixed constant cost isn't that bad.
int threadCount = threadDispatcher == null ? 1 : threadDispatcher.ThreadCount;
//Note that direct wakes always reset activity states. I suspect this is sufficiently universal that no one will ever want the alternative,
//even though the narrowphase does avoid resetting activity states for the sake of faster resleeping when possible.
var(phaseOneJobCount, phaseTwoJobCount) = PrepareJobs(ref uniqueSetIndices, true, threadCount);
if (threadCount > 1)
{
this.jobIndex = -1;
this.jobCount = phaseOneJobCount;
threadDispatcher.DispatchWorkers(phaseOneWorkerDelegate);
}
else
{
for (int i = 0; i < phaseOneJobCount; ++i)
{
ExecutePhaseOneJob(i);
}
}
if (threadCount > 1)
{
this.jobIndex = -1;
this.jobCount = phaseTwoJobCount;
threadDispatcher.DispatchWorkers(phaseTwoWorkerDelegate);
}
else
{
for (int i = 0; i < phaseTwoJobCount; ++i)
{
ExecutePhaseTwoJob(i);
}
}
DisposeForCompletedAwakenings(ref uniqueSetIndices);
uniqueSetIndices.Dispose(pool);
}
public void CleanUp()
{
RefitNodes.Dispose();
for (int i = 0; i < RefinementCandidates.Count; ++i)
{
RefinementCandidates.Elements[i].Count = 0;
RefinementCandidates.Elements[i].Dispose();
}
RefinementCandidates.Clear();
RefinementTargets.Count = 0;
RefinementTargets.Dispose();
CacheOptimizeStarts.Count = 0;
CacheOptimizeStarts.Dispose();
}
protected override void UpdateContainedPairs(float dt)
{
var overlappedElements = new QuickList <int>(BufferPools <int> .Thread);
BoundingBox localBoundingBox;
System.Numerics.Vector3 sweep;
Vector3Ex.Multiply(ref mobileMesh.entity.linearVelocity, dt, out sweep);
mobileMesh.Shape.GetSweptLocalBoundingBox(ref mobileMesh.worldTransform, ref mesh.worldTransform, ref sweep, out localBoundingBox);
mesh.Shape.GetOverlaps(localBoundingBox, ref overlappedElements);
for (int i = 0; i < overlappedElements.Count; i++)
{
TryToAdd(overlappedElements.Elements[i]);
}
overlappedElements.Dispose();
}
protected override void UpdateContainedPairs()
{
RigidTransform rt = mesh.WorldTransform;
QuickList <Vector3i> overlaps = new QuickList <Vector3i>(BufferPools <Vector3i> .Thread);
mesh.ChunkShape.GetOverlaps(ref rt, convex.BoundingBox, ref overlaps);
for (int i = 0; i < overlaps.Count; i++)
{
Vector3i pos = overlaps.Elements[i];
ReusableGenericCollidable <ConvexShape> colBox = new ReusableGenericCollidable <ConvexShape>(mesh.ChunkShape.ShapeAt(pos.X, pos.Y, pos.Z, out Vector3 offs));
colBox.SetEntity(mesh.Entity);
Vector3 input = new Vector3(pos.X + offs.X, pos.Y + offs.Y, pos.Z + offs.Z);
Vector3 transfd = Quaternion.Transform(input, rt.Orientation);
RigidTransform outp = new RigidTransform(transfd + rt.Position, rt.Orientation);
colBox.WorldTransform = outp;
TryToAdd(colBox, convex, mesh.Entity?.Material, convex.Entity?.Material);
}
overlaps.Dispose();
}
public unsafe void TopDownBinnedRefine(int maximumSubtrees)
{
var pool = BufferPools <int> .Thread;
var spareNodes = new QuickList <int>(pool, 8);
var subtreeReferences = new QuickList <int>(pool, BufferPool <int> .GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList <int>(pool, BufferPool <int> .GetPoolIndex(maximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(pool, maximumSubtrees, out buffer, out region, out resources);
TopDownBinnedRefine(0, maximumSubtrees, ref subtreeReferences, ref treeletInternalNodes, ref spareNodes, ref resources);
RemoveUnusedInternalNodes(ref spareNodes);
region.Dispose();
pool.GiveBack(buffer);
spareNodes.Dispose();
subtreeReferences.Dispose();
}
protected override void UpdateContainedPairs()
{
RigidTransform rtMesh = mesh.WorldTransform;
RigidTransform rtMobile = mobile.WorldTransform;
QuickList<Vector3i> overlaps = new QuickList<Vector3i>(BufferPools<Vector3i>.Thread);
mesh.ChunkShape.GetOverlaps(ref rtMesh, mobile.BoundingBox, ref overlaps);
for (int i = 0; i < overlaps.Count; i++)
{
Vector3i pos = overlaps.Elements[i];
Vector3 offs;
ReusableGenericCollidable<ConvexShape> colBox = new ReusableGenericCollidable<ConvexShape>(mesh.ChunkShape.ShapeAt(pos.X, pos.Y, pos.Z, out offs));
Vector3 input = new Vector3(pos.X + offs.X, pos.Y + offs.Y, pos.Z + offs.Z);
Vector3 transfd = Quaternion.Transform(input, rtMesh.Orientation);
RigidTransform outp = new RigidTransform(transfd + rtMesh.Position, rtMesh.Orientation);
colBox.WorldTransform = outp;
colBox.UpdateBoundingBoxForTransform(ref outp);
QuickList<Vector3i> overlaps2 = new QuickList<Vector3i>(BufferPools<Vector3i>.Thread);
mobile.ChunkShape.GetOverlaps(ref rtMobile, colBox.BoundingBox, ref overlaps2);
for (int x = 0; x < overlaps2.Count; x++)
{
Vector3i pos2 = overlaps2.Elements[x];
Vector3 offs2;
ReusableGenericCollidable<ConvexShape> colBox2 = new ReusableGenericCollidable<ConvexShape>(mobile.ChunkShape.ShapeAt(pos2.X, pos2.Y, pos2.Z, out offs2));
colBox2.SetEntity(mobile.Entity);
Vector3 input2 = new Vector3(pos2.X + offs2.X, pos2.Y + offs2.Y, pos2.Z + offs2.Z);
Vector3 transfd2 = Quaternion.Transform(input2, rtMobile.Orientation);
RigidTransform outp2 = new RigidTransform(transfd2 + rtMobile.Position, rtMobile.Orientation);
colBox2.WorldTransform = outp2;
TryToAdd(colBox, colBox2, mesh.Entity != null ? mesh.Entity.Material : null, mobile.Entity != null ? mobile.Entity.Material : null);
}
overlaps2.Dispose();
}
overlaps.Dispose();
}
protected override void UpdateContainedPairs(float dt)
{
var overlappedElements = new QuickList<int>(BufferPools<int>.Thread);
BoundingBox localBoundingBox;
Vector3 sweep;
Vector3.Multiply(ref mobileMesh.entity.linearVelocity, dt, out sweep);
mobileMesh.Shape.GetSweptLocalBoundingBox(ref mobileMesh.worldTransform, ref mesh.worldTransform, ref sweep, out localBoundingBox);
mesh.Shape.GetOverlaps(localBoundingBox, ref overlappedElements);
for (int i = 0; i < overlappedElements.Count; i++)
{
TryToAdd(overlappedElements.Elements[i]);
}
overlappedElements.Dispose();
}
unsafe void Refine(int workerIndex)
{
var spareNodes = new QuickList<int>(Pool, 8);
var subtreeReferences = new QuickList<int>(Pool, BufferPool<int>.GetPoolIndex(MaximumSubtrees));
var treeletInternalNodes = new QuickList<int>(Pool, BufferPool<int>.GetPoolIndex(MaximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(Pool, MaximumSubtrees, out buffer, out region, out resources);
int refineIndex;
while ((refineIndex = Interlocked.Increment(ref RefineIndex)) < RefinementTargets.Count)
{
subtreeReferences.Count = 0;
treeletInternalNodes.Count = 0;
bool nodesInvalidated;
Tree.BinnedRefine(RefinementTargets.Elements[refineIndex], ref subtreeReferences, MaximumSubtrees, ref treeletInternalNodes, ref spareNodes, ref resources, out nodesInvalidated);
//Allow other refines to traverse this node.
Tree.nodes[RefinementTargets.Elements[refineIndex]].RefineFlag = 0;
}
Tree.RemoveUnusedInternalNodes(ref spareNodes);
region.Dispose();
Pool.GiveBack(buffer);
spareNodes.Dispose();
subtreeReferences.Count = 0;
subtreeReferences.Dispose();
treeletInternalNodes.Count = 0;
treeletInternalNodes.Dispose();
}
/// <summary>
/// Determines if a down step is possible, and if so, computes the location to which the character should teleport.
/// </summary>
/// <param name="newPosition">New position the character should teleport to if the down step is accepted.</param>
/// <returns>Whether or not the character should attempt to step down.</returns>
public bool TryToStepDown(out Vector3 newPosition)
{
//Don't bother trying to step down if we already have a support contact or if the support ray doesn't have traction.
if (!(SupportFinder.Supports.Count == 0 && SupportFinder.SupportRayData != null && SupportFinder.SupportRayData.Value.HasTraction))
{
newPosition = new Vector3();
return false;
}
if (!(SupportFinder.SupportRayData.Value.HitData.T - SupportFinder.BottomDistance > minimumDownStepHeight)) //Don't do expensive stuff if it's, at most, a super tiny step that gravity will take care of.
{
newPosition = new Vector3();
return false;
}
//Predict a hit location based on the time of impact and the normal at the intersection.
//Take into account the radius of the character (don't forget the collision margin!)
Vector3 normal = SupportFinder.SupportRayData.Value.HitData.Normal;
Vector3 down = characterBody.orientationMatrix.Down;
RigidTransform transform = characterBody.CollisionInformation.WorldTransform;
//We know that the closest point to the plane will be the extreme point in the plane's direction.
//Use it as the ray origin.
Ray ray;
characterBody.CollisionInformation.Shape.GetExtremePoint(normal, ref transform, out ray.Position);
ray.Direction = down;
//Intersect the ray against the plane defined by the support hit.
Vector3 intersection;
Plane plane = new Plane(normal, Vector3.Dot(SupportFinder.SupportRayData.Value.HitData.Location, normal));
Vector3 candidatePosition;
//Define the interval bounds to be used later.
//The words 'highest' and 'lowest' here refer to the position relative to the character's body.
//The ray cast points downward relative to the character's body.
float highestBound = 0;
//The lowest possible distance is the ray distance plus the collision margin because the ray could theoretically be on the outskirts of the collision margin
//where the shape would actually have to move more than the bottom distance difference would imply.
//(Could compute the true lowest bound analytically based on the horizontal position of the ray...)
float lowestBound = characterBody.CollisionInformation.Shape.CollisionMargin + SupportFinder.SupportRayData.Value.HitData.T - SupportFinder.BottomDistance;
float currentOffset = lowestBound;
float hintOffset;
var tractionContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var supportContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var sideContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var headContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
try
{
//This guess may either win immediately, or at least give us a better idea of where to search.
float hitT;
if (Toolbox.GetRayPlaneIntersection(ref ray, ref plane, out hitT, out intersection))
{
currentOffset = hitT + CollisionDetectionSettings.AllowedPenetration * 0.5f;
candidatePosition = characterBody.Position + down * currentOffset;
switch (TryDownStepPosition(ref candidatePosition, ref down,
ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts,
out hintOffset))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset > minimumDownStepHeight && currentOffset < maximumStepHeight)
{
newPosition = characterBody.Position + currentOffset * down;
return true;
}
else
{
newPosition = new Vector3();
return false;
}
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
}
//Our guesses failed.
//Begin the regular process. Start at the time of impact of the ray itself.
//How about trying the time of impact of the ray itself?
//Since we wouldn't be here unless there were no contacts at the body's current position,
//testing the ray cast location gives us the second bound we need to do an informed binary search.
int attempts = 0;
//Don't keep querying indefinitely. If we fail to reach it in a few informed steps, it's probably not worth continuing.
//The bound size check prevents the system from continuing to search a meaninglessly tiny interval.
while (attempts++ < 5 && lowestBound - highestBound > Toolbox.BigEpsilon)
{
candidatePosition = characterBody.Position + currentOffset * down;
switch (TryDownStepPosition(ref candidatePosition, ref down, ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts, out hintOffset))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset > minimumDownStepHeight && currentOffset < maximumStepHeight)
{
newPosition = characterBody.Position + currentOffset * down;
return true;
}
else
{
newPosition = new Vector3();
return false;
}
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + highestBound) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + lowestBound) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
}
//Couldn't find a candidate.
newPosition = new Vector3();
return false;
}
finally
{
tractionContacts.Dispose();
supportContacts.Dispose();
sideContacts.Dispose();
headContacts.Dispose();
}
}
/// <summary>
/// Executes one pass of bottom-up refinement.
/// </summary>
public unsafe void BottomUpBinnedRefine(int maximumSubtrees)
{
//If this works out, should probably choose a more efficient flagging approach.
//Note the size: it needs to contain all possible internal nodes.
//TODO: This is actually bugged, because the refinement flags do not update if the nodes move.
//And the nodes CAN move.
var pool = BufferPools<int>.Thread;
var spareNodes = new QuickList<int>(pool, 8);
var subtreeReferences = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(pool, maximumSubtrees, out buffer, out region, out resources);
var refinementFlags = new int[leafCount * 2 - 1];
for (int i = 0; i < nodeCount; ++i)
{
refinementFlags[i] = 0;
}
for (int i = 0; i < leafCount; ++i)
{
TryToBottomUpBinnedRefine(refinementFlags, leaves[i].NodeIndex, maximumSubtrees, ref subtreeReferences, ref treeletInternalNodes, ref resources, ref spareNodes);
//Validate();
}
//Console.WriteLine($"root children: {nodes->ChildCount}");
RemoveUnusedInternalNodes(ref spareNodes);
spareNodes.Dispose();
subtreeReferences.Dispose();
region.Dispose();
pool.GiveBack(buffer);
}
unsafe void ValidateStaging(Node* stagingNodes, ref QuickList<int> subtreeNodePointers, int treeletParent, int treeletIndexInParent)
{
int foundSubtrees, foundLeafCount;
QuickList<int> collectedSubtreeReferences = new QuickList<int>(BufferPools<int>.Thread);
QuickList<int> internalReferences = new QuickList<int>(BufferPools<int>.Thread);
internalReferences.Add(0);
ValidateStaging(stagingNodes, 0, ref subtreeNodePointers, ref collectedSubtreeReferences, ref internalReferences, out foundSubtrees, out foundLeafCount);
if (treeletParent < -1 || treeletParent >= nodeCount)
throw new Exception("Bad treelet parent.");
if (treeletIndexInParent < -1 || (treeletParent >= 0 && treeletIndexInParent >= nodes[treeletParent].ChildCount))
throw new Exception("Bad treelet index in parent.");
if (treeletParent >= 0 && (&nodes[treeletParent].LeafCountA)[treeletIndexInParent] != foundLeafCount)
{
throw new Exception("Bad leaf count.");
}
if (subtreeNodePointers.Count != foundSubtrees)
{
throw new Exception("Bad subtree found count.");
}
for (int i = 0; i < collectedSubtreeReferences.Count; ++i)
{
if (!subtreeNodePointers.Contains(collectedSubtreeReferences[i]) || !collectedSubtreeReferences.Contains(subtreeNodePointers[i]))
throw new Exception("Bad subtree reference.");
}
collectedSubtreeReferences.Dispose();
internalReferences.Dispose();
}
unsafe void RecursiveRefine(int nodeIndex, int maximumSubtrees, ref int treeSizeSeed, ref QuickList<int> treeletInternalNodes, ref QuickList<int> spareNodes, ref BinnedResources binnedResources, out bool nodesInvalidated)
{
QuickList<int> subtreeReferences = new QuickList<int>(BufferPools<int>.Thread, BufferPool<int>.GetPoolIndex(maximumSubtrees));
//Vary the size between 0.5 and 1 times the maximumSubtrees.
ulong halfMaximumSubtrees = (ulong)(maximumSubtrees / 2);
++treeSizeSeed;
var size = ((ulong)(treeSizeSeed * treeSizeSeed) * 413158511UL + 735632797UL) % halfMaximumSubtrees;
var targetSubtreeCount = (int)(size + halfMaximumSubtrees);
nodesInvalidated = false;
bool invalidated;
BinnedRefine(nodeIndex, ref subtreeReferences, targetSubtreeCount, ref treeletInternalNodes, ref spareNodes, ref binnedResources, out invalidated);
if (invalidated)
{
nodesInvalidated = true;
}
for (int i = 0; i < subtreeReferences.Count; ++i)
{
if (subtreeReferences.Elements[i] >= 0)
{
RecursiveRefine(subtreeReferences.Elements[i], maximumSubtrees, ref treeSizeSeed, ref treeletInternalNodes, ref spareNodes, ref binnedResources, out invalidated);
if (invalidated)
{
nodesInvalidated = true;
}
}
}
subtreeReferences.Count = 0;
subtreeReferences.Dispose();
}
/// <summary>
/// Attempts to change the stance of the character if possible.
/// </summary>
/// <returns>Whether or not the character was able to change its stance.</returns>
public bool UpdateStance(out Vector3 newPosition)
{
var currentPosition = characterBody.position;
var down = characterBody.orientationMatrix.Down;
newPosition = new Vector3();
if (CurrentStance != DesiredStance)
{
if (CurrentStance == Stance.Standing && DesiredStance == Stance.Crouching)
{
//Crouch. There's no complicated logic to crouching; you don't need to validate
//a crouch before doing it.
//You do, however, do a different kind of crouch if you're airborne.
if (SupportFinder.HasSupport)
{
//Move the character towards the ground.
newPosition = currentPosition + down * ((StandingHeight - CrouchingHeight) * .5f);
characterBody.Height = CrouchingHeight;
CurrentStance = Stance.Crouching;
}
else
{
//We're in the air, so we don't have to change the position at all- just change the height.
//No queries needed since we're only shrinking.
newPosition = currentPosition;
characterBody.Height = CrouchingHeight;
CurrentStance = Stance.Crouching;
}
return true;
}
else if (CurrentStance == Stance.Crouching && DesiredStance == Stance.Standing)
{
var tractionContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var supportContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var sideContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var headContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
try
{
//Attempt to stand.
if (SupportFinder.HasSupport)
{
//Standing requires a query to verify that the new state is safe.
//TODO: State queries can be expensive if the character is crouching beneath something really detailed.
//There are some situations where you may want to do an upwards-pointing ray cast first. If it hits something,
//there's no need to do the full query.
newPosition = currentPosition - down * ((StandingHeight - CrouchingHeight) * .5f);
PrepareQueryObject(standingQueryObject, ref newPosition);
QueryManager.QueryContacts(standingQueryObject, ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts);
if (IsObstructed(ref sideContacts, ref headContacts))
{
//Can't stand up if something is in the way!
return false;
}
characterBody.Height = StandingHeight;
CurrentStance = Stance.Standing;
return true;
}
else
{
//This is a complicated case. We must perform a semi-downstep query.
//It's different than a downstep because the head may be obstructed as well.
float highestBound = 0;
float lowestBound = (StandingHeight - CrouchingHeight) * .5f;
float currentOffset = lowestBound;
float maximum = lowestBound;
int attempts = 0;
//Don't keep querying indefinitely. If we fail to reach it in a few informed steps, it's probably not worth continuing.
//The bound size check prevents the system from continuing to search a meaninglessly tiny interval.
while (attempts++ < 5 && lowestBound - highestBound > Toolbox.BigEpsilon)
{
Vector3 candidatePosition = currentPosition + currentOffset * down;
float hintOffset;
switch (TrySupportLocation(ref candidatePosition, out hintOffset, ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset > 0 && currentOffset < maximum)
{
newPosition = currentPosition + currentOffset * down;
characterBody.Height = StandingHeight;
CurrentStance = Stance.Standing;
return true;
}
else
{
return false;
}
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + highestBound) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + lowestBound) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
}
//Couldn't find a hit. Go ahead and stand!
newPosition = currentPosition;
characterBody.Height = StandingHeight;
CurrentStance = Stance.Standing;
return true;
}
}
finally
{
tractionContacts.Dispose();
supportContacts.Dispose();
sideContacts.Dispose();
headContacts.Dispose();
}
}
}
return false;
}
public unsafe int RefitAndRefine(int frameIndex, float refineAggressivenessScale = 1, float cacheOptimizeAggressivenessScale = 1)
{
//Don't proceed if the tree is empty.
if (leafCount == 0)
return 0;
var pool = BufferPools<int>.Locking;
int maximumSubtrees, estimatedRefinementCandidateCount, leafCountThreshold;
GetRefitAndMarkTuning(out maximumSubtrees, out estimatedRefinementCandidateCount, out leafCountThreshold);
var refinementCandidates = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(estimatedRefinementCandidateCount));
//Collect the refinement candidates.
var costChange = RefitAndMark(leafCountThreshold, ref refinementCandidates);
int targetRefinementCount, period, offset;
GetRefineTuning(frameIndex, refinementCandidates.Count, refineAggressivenessScale, costChange, 1, out targetRefinementCount, out period, out offset);
var refinementTargets = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(targetRefinementCount));
int actualRefinementTargetsCount = 0;
int index = offset;
for (int i = 0; i < targetRefinementCount - 1; ++i)
{
index += period;
if (index >= refinementCandidates.Count)
index -= refinementCandidates.Count;
Debug.Assert(index < refinementCandidates.Count && index >= 0);
refinementTargets.Elements[actualRefinementTargetsCount++] = refinementCandidates.Elements[index];
nodes[refinementCandidates.Elements[index]].RefineFlag = 1;
}
refinementTargets.Count = actualRefinementTargetsCount;
refinementCandidates.Count = 0;
refinementCandidates.Dispose();
if (nodes->RefineFlag == 0)
{
refinementTargets.Add(0);
nodes->RefineFlag = 1;
++actualRefinementTargetsCount;
}
//Refine all marked targets.
var spareNodes = new QuickList<int>(pool, 8);
var subtreeReferences = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(pool, maximumSubtrees, out buffer, out region, out resources);
for (int i = 0; i < refinementTargets.Count; ++i)
{
subtreeReferences.Count = 0;
treeletInternalNodes.Count = 0;
bool nodesInvalidated;
BinnedRefine(refinementTargets.Elements[i], ref subtreeReferences, maximumSubtrees, ref treeletInternalNodes, ref spareNodes, ref resources, out nodesInvalidated);
//TODO: Should this be moved into a post-loop? It could permit some double work, but that's not terrible.
//It's not invalid from a multithreading perspective, either- setting the refine flag to zero is essentially an unlock.
//If other threads don't see it updated due to cache issues, it doesn't really matter- it's not a signal or anything like that.
nodes[refinementTargets.Elements[i]].RefineFlag = 0;
}
RemoveUnusedInternalNodes(ref spareNodes);
region.Dispose();
pool.GiveBack(buffer);
spareNodes.Dispose();
subtreeReferences.Count = 0;
subtreeReferences.Dispose();
treeletInternalNodes.Count = 0;
treeletInternalNodes.Dispose();
refinementTargets.Count = 0;
refinementTargets.Dispose();
var cacheOptimizeCount = GetCacheOptimizeTuning(maximumSubtrees, costChange, cacheOptimizeAggressivenessScale);
var startIndex = (int)(((long)frameIndex * cacheOptimizeCount) % nodeCount);
//We could wrap around. But we could also not do that because it doesn't really matter!
//var startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
var end = Math.Min(NodeCount, startIndex + cacheOptimizeCount);
for (int i = startIndex; i < end; ++i)
{
IncrementalCacheOptimize(i);
}
//var endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
//Console.WriteLine($"Cache optimize time: {endTime - startTime}");
return actualRefinementTargetsCount;
}
public static unsafe TestResults TestSingleArray(TestCollidable[] leaves, BoundingBox[] queries, BoundingBox positionBounds,
int queryCount, int selfTestCount, int refitCount, int frameCount, float dt, ParallelLooper looper)
{
{
var warmLeaves = GetLeaves(10, 10, 10, 10, 10);
Tree tree = new Tree();
//for (int i = 0; i < leaves.Length; ++i)
//{
// BoundingBox box;
// leaves[i].GetBoundingBox(out box);
// //tree.Insert(i, ref box);
// tree.AddGlobal(i, ref box);
//}
int[] leafIds = new int[warmLeaves.Length];
BoundingBox[] leafBounds = new BoundingBox[warmLeaves.Length];
for (int i = 0; i < warmLeaves.Length; ++i)
{
leafIds[i] = i;
warmLeaves[i].GetBoundingBox(out leafBounds[i]);
}
//tree.BuildMedianSplit(leafIds, leafBounds);
//tree.BuildVolumeHeuristic(leafIds, leafBounds);
tree.SweepBuild(leafIds, leafBounds);
Console.WriteLine($"SingleArray Cachewarm Build: {tree.LeafCount}");
tree.Refit();
//tree.BottomUpAgglomerativeRefine();
//tree.TopDownAgglomerativeRefine();
//tree.BottomUpSweepRefine();
//tree.TopDownSweepRefine();
tree.RefitAndRefine(0);
var context = new Tree.RefitAndRefineMultithreadedContext(tree);
tree.RefitAndRefine(0, looper, context);
var selfTestContext = new Tree.SelfTestMultithreadedContext(looper.ThreadCount, BufferPools<Overlap>.Locking);
tree.GetSelfOverlaps(looper, selfTestContext);
var list = new QuickList<int>(new BufferPool<int>());
BoundingBox aabb = new BoundingBox { Min = new Vector3(0, 0, 0), Max = new Vector3(1, 1, 1) };
tree.QueryRecursive(ref aabb, ref list);
list.Dispose();
var overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlaps(ref overlaps);
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlapsArityDedicated(ref overlaps);
tree.IncrementalCacheOptimize(0);
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlapsViaQueries(ref overlaps);
Console.WriteLine($"Cachewarm overlaps: {overlaps.Count}");
tree.Dispose();
}
{
Console.WriteLine($"SingleArray arity: {Tree.ChildrenCapacity}");
Tree tree = new Tree(Math.Max(1, leaves.Length));
var startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < leaves.Length; ++i)
{
var leafIndex = (int)((982451653L * i) % leaves.Length);
BoundingBox box;
leaves[leafIndex].GetBoundingBox(out box);
tree.Add(leafIndex, ref box);
//tree.AddGlobal(leafIndex, ref box);
}
//int[] leafIds = new int[leaves.Length];
//BoundingBox[] leafBounds = new BoundingBox[leaves.Length];
//for (int i = 0; i < leaves.Length; ++i)
//{
// leafIds[i] = i;
// leaves[i].GetBoundingBox(out leafBounds[i]);
//}
////tree.BuildMedianSplit(leafIds, leafBounds);
////tree.BuildVolumeHeuristic(leafIds, leafBounds);
//tree.SweepBuild(leafIds, leafBounds);
var endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray Build Time: {endTime - startTime}, depth: {tree.ComputeMaximumDepth()}");
int nodeCount, childCount;
tree.MeasureNodeOccupancy(out nodeCount, out childCount);
Console.WriteLine($"SingleArray Occupancy: {childCount / (double)nodeCount}");
Console.WriteLine($"Cost metric: {tree.MeasureCostMetric()}");
Console.WriteLine($"Cache Quality: {tree.MeasureCacheQuality()}");
tree.Validate();
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < refitCount; ++i)
{
//for (int i = 0; i < tree.LeafCount; ++i)
//{
// BoundingBox box;
// leaves[tree.Leaves[i].Id].GetBoundingBox(out box);
// tree.UpdateLeafBoundingBox(i, ref box);
//}
tree.Refit();
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray Refit Time1: {endTime - startTime}");
var overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlaps(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray SelfTree Time1: {endTime - startTime}, overlaps: {overlaps.Count}");
int[] buffer;
MemoryRegion region;
BinnedResources resources;
const int maximumSubtrees = 262144;
var spareNodes = new QuickList<int>(new BufferPool<int>(), 8);
var subtreeReferences = new QuickList<int>(BufferPools<int>.Thread, BufferPool<int>.GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList<int>(BufferPools<int>.Thread, BufferPool<int>.GetPoolIndex(maximumSubtrees));
Tree.CreateBinnedResources(BufferPools<int>.Thread, maximumSubtrees, out buffer, out region, out resources);
bool nodesInvalidated;
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
var refineContext = new Tree.RefitAndRefineMultithreadedContext(tree);
var selfTestContext = new Tree.SelfTestMultithreadedContext(looper.ThreadCount, BufferPools<Overlap>.Locking);
var visitedNodes = new QuickSet<int>(BufferPools<int>.Thread, BufferPools<int>.Thread);
//**************** Dynamic Testing
Random random = new Random(5);
TestResults results = new TestResults("New", frameCount);
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int t = 0; t < frameCount; ++t)
{
//Update the positions of objects.
for (int i = 0; i < tree.LeafCount; ++i)
{
var leafId = tree.Leaves[i].Id;
var leaf = leaves[leafId];
//Bounce off the walls.
if (leaf.Position.X < positionBounds.Min.X && leaf.Velocity.X < 0)
leaf.Velocity.X = -leaf.Velocity.X;
if (leaf.Position.Y < positionBounds.Min.Y && leaf.Velocity.Y < 0)
leaf.Velocity.Y = -leaf.Velocity.Y;
if (leaf.Position.Z < positionBounds.Min.Z && leaf.Velocity.Z < 0)
leaf.Velocity.Z = -leaf.Velocity.Z;
if (leaf.Position.X > positionBounds.Max.X && leaf.Velocity.X > 0)
leaf.Velocity.X = -leaf.Velocity.X;
if (leaf.Position.Y > positionBounds.Max.Y && leaf.Velocity.Y > 0)
leaf.Velocity.Y = -leaf.Velocity.Y;
if (leaf.Position.Z > positionBounds.Max.Z && leaf.Velocity.Z > 0)
leaf.Velocity.Z = -leaf.Velocity.Z;
leaf.Position += leaf.Velocity * dt;
BoundingBox boundingBox;
leaf.GetBoundingBox(out boundingBox);
tree.SetLeafBoundingBox(i, ref boundingBox);
}
var refineStartTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
int refinementCount;
if(looper.ThreadCount > 1)
refinementCount = tree.RefitAndRefine(t, looper, refineContext);
else
refinementCount = tree.RefitAndRefine(t);
var refineEndTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
int overlapsCount;
if (looper.ThreadCount > 1)
{
tree.GetSelfOverlaps(looper, selfTestContext);
overlapsCount = 0;
for (int i = 0; i < selfTestContext.WorkerOverlaps.Length; ++i)
{
overlapsCount += selfTestContext.WorkerOverlaps[i].Count;
}
}
else
{
overlaps.Count = 0;
tree.GetSelfOverlapsArityDedicated(ref overlaps);
overlapsCount = overlaps.Count;
}
var testEndTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
results.Refine[t] = 1000 * (refineEndTime - refineStartTime);
results.SelfTest[t] = 1000 * (testEndTime - refineEndTime);
results.Total[t] = 1000 * (testEndTime - refineStartTime);
results.OverlapCounts[t] = overlapsCount;
results.TreeCosts[t] = tree.MeasureCostMetric();
if (t % 16 == 0)
{
Console.WriteLine($"_________________{t}_________________");
Console.WriteLine($"Refinement count: {refinementCount}");
Console.WriteLine($"Refine time: {results.Refine[t]}");
Console.WriteLine($"Test time: {results.SelfTest[t]}");
Console.WriteLine($"TIME: {results.Total[t]}");
Console.WriteLine($"Cost metric: {results.TreeCosts[t]}");
Console.WriteLine($"Overlaps: {results.OverlapCounts[t]}");
Console.WriteLine($"Cache Quality: {tree.MeasureCacheQuality()}");
GC.Collect();
}
tree.Validate();
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
tree.Validate();
Console.WriteLine($"SingleArray Cache Quality: {tree.MeasureCacheQuality()}");
Console.WriteLine($"Cost metric: {tree.MeasureCostMetric()}");
region.Dispose();
tree.RemoveUnusedInternalNodes(ref spareNodes);
BufferPools<int>.Thread.GiveBack(buffer);
//********************
tree.MeasureNodeOccupancy(out nodeCount, out childCount);
Console.WriteLine($"SingleArray Occupancy: {childCount / (double)nodeCount}");
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < refitCount; ++i)
{
//for (int i = 0; i < tree.LeafCount; ++i)
//{
// BoundingBox box;
// leaves[tree.Leaves[i].Id].GetBoundingBox(out box);
// tree.UpdateLeafBoundingBox(i, ref box);
//}
tree.Refit();
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray Refit Time2: {endTime - startTime}");
var list = new QuickList<int>(new BufferPool<int>());
var queryMask = queries.Length - 1;
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < queryCount; ++i)
{
list.Count = 0;
//tree.Query2(ref queries[i & queryMask], ref list);
tree.QueryRecursive(ref queries[i & queryMask], ref list);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray Query Time: {endTime - startTime}, overlaps: {list.Count}");
Array.Clear(list.Elements, 0, list.Elements.Length);
list.Dispose();
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlaps(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray SelfTree Time: {endTime - startTime}, overlaps: {overlaps.Count}");
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlapsArityDedicated(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray Arity-Dedicated SelfTree Time: {endTime - startTime}, overlaps: {overlaps.Count}");
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlapsViaQueries(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SingleArray SelfQuery Time: {endTime - startTime}, overlaps: {overlaps.Count}");
tree.Dispose();
return results;
}
}
public static void TestVectorized(TestCollidable[] leaves, BoundingBox[] queries, int queryCount, int selfTestCount, int refitCount)
{
{
var warmLeaves = GetLeaves(8, 8, 8, 10, 10);
Tree<TestCollidable> tree = new Tree<TestCollidable>();
for (int i = 0; i < warmLeaves.Length; ++i)
{
tree.Insert(warmLeaves[i]);
}
Console.WriteLine($"Cachewarm Build: {tree.LeafCount}");
tree.RefitLeaves();
var list = new QuickList<int>(new BufferPool<int>());
BoundingBox aabb = new BoundingBox { Min = new Vector3(0, 0, 0), Max = new Vector3(1, 1, 1) };
tree.Query(ref aabb, ref list);
list.Dispose();
var overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlaps(ref overlaps);
Console.WriteLine($"Warm overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlapsViaQueries(ref overlaps);
Console.WriteLine($"Warm overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
tree.GetSelfOverlapsViaStreamingQueries(ref overlaps);
Console.WriteLine($"Warm overlaps: {overlaps.Count}");
}
{
Tree<TestCollidable> tree = new Tree<TestCollidable>(leaves.Length, 32);
var startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < leaves.Length; ++i)
{
tree.Insert(leaves[(int)((982451653L * i) % leaves.Length)]);
//tree.Insert(leaves[i]);
}
var endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Build Time: {endTime - startTime}, depth: {tree.MaximumDepth}");
int nodeCount, childCount;
tree.MeasureNodeOccupancy(out nodeCount, out childCount);
Console.WriteLine($"Occupancy: {childCount / (double)nodeCount}");
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < refitCount; ++i)
{
//tree.RefitLeaves();
tree.Refit();
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Refit Time: {endTime - startTime}");
var list = new QuickList<int>(new BufferPool<int>());
var queryMask = queries.Length - 1;
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < queryCount; ++i)
{
list.Count = 0;
//tree.Query(ref queries[i & queryMask], ref list);
tree.QueryRecursive(ref queries[i & queryMask], ref list);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Query Time: {endTime - startTime}, overlaps: {list.Count}");
list.Dispose();
var overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlaps(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SelfTree Time: {endTime - startTime}, overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlapsViaQueries(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"SelfQuery Time: {endTime - startTime}, overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap>(new BufferPool<Overlap>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlapsViaStreamingQueries(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"StreamingSelfQuery Time: {endTime - startTime}, overlaps: {overlaps.Count}");
}
}
protected override void UpdateContainedPairs()
{
RigidTransform rt = mesh.WorldTransform;
QuickList<Vector3i> overlaps = new QuickList<Vector3i>(BufferPools<Vector3i>.Thread);
mesh.ChunkShape.GetOverlaps(ref rt, convex.BoundingBox, ref overlaps);
for (int i = 0; i < overlaps.Count; i++)
{
Vector3i pos = overlaps.Elements[i];
Vector3 offs;
ReusableGenericCollidable<ConvexShape> colBox = new ReusableGenericCollidable<ConvexShape>(mesh.ChunkShape.ShapeAt(pos.X, pos.Y, pos.Z, out offs));
colBox.SetEntity(mesh.Entity);
Vector3 input = new Vector3(pos.X + offs.X, pos.Y + offs.Y, pos.Z + offs.Z);
Vector3 transfd = Quaternion.Transform(input, rt.Orientation);
RigidTransform outp = new RigidTransform(transfd + rt.Position, rt.Orientation);
colBox.WorldTransform = outp;
TryToAdd(colBox, convex, mesh.Entity != null ? mesh.Entity.Material : null, convex.Entity != null ? convex.Entity.Material : null);
}
overlaps.Dispose();
}
private static void ComputeInitialTetrahedron(ref QuickList<Vector3> points, ref QuickList<int> outsidePointCandidates, ref QuickList<int> triangleIndices, out Vector3 centroid)
{
//Find four points on the hull.
//We'll start with using the x axis to identify two points on the hull.
int a, b, c, d;
Vector3 direction;
//Find the extreme points along the x axis.
float minimumX = float.MaxValue, maximumX = -float.MaxValue;
int minimumXIndex = 0, maximumXIndex = 0;
for (int i = 0; i < points.Count; ++i)
{
var v = points.Elements[i];
if (v.X > maximumX)
{
maximumX = v.X;
maximumXIndex = i;
}
else if (v.X < minimumX)
{
minimumX = v.X;
minimumXIndex = i;
}
}
a = minimumXIndex;
b = maximumXIndex;
//Check for redundancies..
if (a == b)
throw new ArgumentException("Point set is degenerate; convex hulls must have volume.");
//Now, use a second axis perpendicular to the two points we found.
Vector3 ab = points.Elements[b] - points.Elements[a];
Vector3x.Cross(ref ab, ref Toolbox.UpVector, out direction);
if (direction.LengthSquared() < Toolbox.Epsilon)
Vector3x.Cross(ref ab, ref Toolbox.RightVector, out direction);
float minimumDot, maximumDot;
int minimumIndex, maximumIndex;
GetExtremePoints(ref direction, ref points, out maximumDot, out minimumDot, out maximumIndex, out minimumIndex);
//Compare the location of the extreme points to the location of the axis.
float dot = Vector3.Dot(direction, points.Elements[a]);
//Use the point further from the axis.
if (Math.Abs(dot - minimumDot) > Math.Abs(dot - maximumDot))
{
//In this case, we should use the minimum index.
c = minimumIndex;
}
else
{
//In this case, we should use the maximum index.
c = maximumIndex;
}
//Check for redundancies..
if (a == c || b == c)
throw new ArgumentException("Point set is degenerate; convex hulls must have volume.");
//Use a third axis perpendicular to the plane defined by the three unique points a, b, and c.
Vector3 ac = points.Elements[c] - points.Elements[a];
Vector3x.Cross(ref ab, ref ac, out direction);
GetExtremePoints(ref direction, ref points, out maximumDot, out minimumDot, out maximumIndex, out minimumIndex);
//Compare the location of the extreme points to the location of the plane.
dot = Vector3.Dot(direction, points.Elements[a]);
//Use the point further from the plane.
if (Math.Abs(dot - minimumDot) > Math.Abs(dot - maximumDot))
{
//In this case, we should use the minimum index.
d = minimumIndex;
}
else
{
//In this case, we should use the maximum index.
d = maximumIndex;
}
//Check for redundancies..
if (a == d || b == d || c == d)
throw new ArgumentException("Point set is degenerate; convex hulls must have volume.");
//Add the triangles.
triangleIndices.Add(a);
triangleIndices.Add(b);
triangleIndices.Add(c);
triangleIndices.Add(a);
triangleIndices.Add(b);
triangleIndices.Add(d);
triangleIndices.Add(a);
triangleIndices.Add(c);
triangleIndices.Add(d);
triangleIndices.Add(b);
triangleIndices.Add(c);
triangleIndices.Add(d);
//The centroid is guaranteed to be within the convex hull. It will be used to verify the windings of triangles throughout the hull process.
centroid = (points.Elements[a] + points.Elements[b] + points.Elements[c] + points.Elements[d]) * 0.25f;
for (int i = 0; i < triangleIndices.Count; i += 3)
{
var vA = points.Elements[triangleIndices.Elements[i]];
var vB = points.Elements[triangleIndices.Elements[i + 1]];
var vC = points.Elements[triangleIndices.Elements[i + 2]];
//Check the signed volume of a parallelepiped with the edges of this triangle and the centroid.
Vector3 cross;
ab = vB - vA;
ac = vC - vA;
Vector3x.Cross(ref ac, ref ab, out cross);
Vector3 offset = vA - centroid;
float volume = Vector3.Dot(offset, cross);
//This volume/cross product could also be used to check for degeneracy, but we already tested for that.
if (Math.Abs(volume) < Toolbox.BigEpsilon)
{
throw new ArgumentException("Point set is degenerate; convex hulls must have volume.");
}
if (volume < 0)
{
//If the signed volume is negative, that means the triangle's winding is opposite of what we want.
//Flip it around!
var temp = triangleIndices.Elements[i];
triangleIndices.Elements[i] = triangleIndices.Elements[i + 1];
triangleIndices.Elements[i + 1] = temp;
}
}
//Points which belong to the tetrahedra are guaranteed to be 'in' the convex hull. Do not allow them to be considered.
var tetrahedronIndices = new QuickList<int>(BufferPools<int>.Locking);
tetrahedronIndices.Add(a);
tetrahedronIndices.Add(b);
tetrahedronIndices.Add(c);
tetrahedronIndices.Add(d);
//Sort the indices to allow a linear time loop.
Array.Sort(tetrahedronIndices.Elements, 0, 4);
int tetrahedronIndex = 0;
for (int i = 0; i < points.Count; ++i)
{
if (tetrahedronIndex < 4 && i == tetrahedronIndices[tetrahedronIndex])
{
//Don't add a tetrahedron index. Now that we've found this index, though, move on to the next one.
++tetrahedronIndex;
}
else
{
outsidePointCandidates.Add(i);
}
}
tetrahedronIndices.Dispose();
}
/// <summary>
/// Casts a convex shape against the collidable.
/// </summary>
/// <param name="castShape">Shape to cast.</param>
/// <param name="startingTransform">Initial transform of the shape.</param>
/// <param name="sweep">Sweep to apply to the shape.</param>
/// <param name="hit">Hit data, if any.</param>
/// <returns>Whether or not the cast hit anything.</returns>
public override bool ConvexCast(CollisionShapes.ConvexShapes.ConvexShape castShape, ref RigidTransform startingTransform, ref System.Numerics.Vector3 sweep, out RayHit hit)
{
hit = new RayHit();
BoundingBox localSpaceBoundingBox;
castShape.GetSweptLocalBoundingBox(ref startingTransform, ref worldTransform, ref sweep, out localSpaceBoundingBox);
var tri = PhysicsThreadResources.GetTriangle();
var hitElements = new QuickList<int>(BufferPools<int>.Thread);
if (Shape.GetOverlaps(localSpaceBoundingBox, ref hitElements))
{
hit.T = float.MaxValue;
for (int i = 0; i < hitElements.Count; i++)
{
Shape.GetTriangle(hitElements.Elements[i], ref worldTransform, out tri.vA, out tri.vB, out tri.vC);
System.Numerics.Vector3 center;
Vector3Ex.Add(ref tri.vA, ref tri.vB, out center);
Vector3Ex.Add(ref center, ref tri.vC, out center);
Vector3Ex.Multiply(ref center, 1f / 3f, out center);
Vector3Ex.Subtract(ref tri.vA, ref center, out tri.vA);
Vector3Ex.Subtract(ref tri.vB, ref center, out tri.vB);
Vector3Ex.Subtract(ref tri.vC, ref center, out tri.vC);
tri.MaximumRadius = tri.vA.LengthSquared();
float radius = tri.vB.LengthSquared();
if (tri.MaximumRadius < radius)
tri.MaximumRadius = radius;
radius = tri.vC.LengthSquared();
if (tri.MaximumRadius < radius)
tri.MaximumRadius = radius;
tri.MaximumRadius = (float)Math.Sqrt(tri.MaximumRadius);
tri.collisionMargin = 0;
var triangleTransform = new RigidTransform { Orientation = System.Numerics.Quaternion.Identity, Position = center };
RayHit tempHit;
if (MPRToolbox.Sweep(castShape, tri, ref sweep, ref Toolbox.ZeroVector, ref startingTransform, ref triangleTransform, out tempHit) && tempHit.T < hit.T)
{
hit = tempHit;
}
}
tri.MaximumRadius = 0;
PhysicsThreadResources.GiveBack(tri);
hitElements.Dispose();
return hit.T != float.MaxValue;
}
PhysicsThreadResources.GiveBack(tri);
hitElements.Dispose();
return false;
}
/// <summary>
/// Executes one pass of bottom-up refinement.
/// </summary>
public unsafe void BottomUpAgglomerativeRefine()
{
//If this works out, should probably choose a more efficient flagging approach.
//Note the size: it needs to contain all possible internal nodes.
//TODO: This is actually bugged, because the refinement flags do not update if the nodes move.
//And the nodes CAN move.
var spareNodes = new QuickList<int>(BufferPools<int>.Thread, 8);
var refinementFlags = new int[leafCount * 2 - 1];
for (int i = 0; i < nodeCount; ++i)
{
refinementFlags[i] = 0;
}
for (int i = 0; i < leafCount; ++i)
{
TryToBottomUpAgglomerativeRefine(refinementFlags, leaves[i].NodeIndex, ref spareNodes);
//Validate();
}
//Console.WriteLine($"root children: {nodes->ChildCount}");
RemoveUnusedInternalNodes(ref spareNodes);
spareNodes.Dispose();
}
/// <summary>
/// Identifies the indices of points in a set which are on the outer convex hull of the set.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputTriangleIndices">List of indices into the input point set composing the triangulated surface of the convex hull.
/// Each group of 3 indices represents a triangle on the surface of the hull.</param>
public static void GetConvexHull(ref QuickList<Vector3> points, ref QuickList<int> outputTriangleIndices)
{
if (points.Count == 0)
{
throw new ArgumentException("Point set must have volume.");
}
var outsidePoints = new QuickList<int>(BufferPools<int>.Locking, BufferPool.GetPoolIndex(points.Count - 4));
//Build the initial tetrahedron.
//It will also give us the location of a point which is guaranteed to be within the
//final convex hull. We can use this point to calibrate the winding of triangles.
//A set of outside point candidates (all points other than those composing the tetrahedron) will be returned in the outsidePoints list.
//That list will then be further pruned by the RemoveInsidePoints call.
Vector3 insidePoint;
ComputeInitialTetrahedron(ref points, ref outsidePoints, ref outputTriangleIndices, out insidePoint);
//Compute outside points.
RemoveInsidePoints(ref points, ref outputTriangleIndices, ref outsidePoints);
var edges = new QuickList<int>(BufferPools<int>.Locking);
var toRemove = new QuickList<int>(BufferPools<int>.Locking);
var newTriangles = new QuickList<int>(BufferPools<int>.Locking);
//We're now ready to begin the main loop.
while (outsidePoints.Count > 0)
{
//While the convex hull is incomplete...
for (int k = 0; k < outputTriangleIndices.Count; k += 3)
{
//Find the normal of the triangle
Vector3 normal;
FindNormal(ref outputTriangleIndices, ref points, k, out normal);
//Get the furthest point in the direction of the normal.
int maxIndexInOutsideList = GetExtremePoint(ref normal, ref points, ref outsidePoints);
int maxIndex = outsidePoints.Elements[maxIndexInOutsideList];
Vector3 maximum = points.Elements[maxIndex];
//If the point is beyond the current triangle, continue.
Vector3 offset = maximum - points.Elements[outputTriangleIndices.Elements[k]];
float dot = Vector3.Dot(normal, offset);
if (dot > 0)
{
//It's been picked! Remove the maximum point from the outside.
outsidePoints.FastRemoveAt(maxIndexInOutsideList);
//Remove any triangles that can see the point, including itself!
edges.Clear();
toRemove.Clear();
for (int n = outputTriangleIndices.Count - 3; n >= 0; n -= 3)
{
//Go through each triangle, if it can be seen, delete it and use maintainEdge on its edges.
if (IsTriangleVisibleFromPoint(ref outputTriangleIndices, ref points, n, ref maximum))
{
//This triangle can see it!
//TODO: CONSIDER CONSISTENT WINDING HAPPYTIMES
MaintainEdge(outputTriangleIndices[n], outputTriangleIndices[n + 1], ref edges);
MaintainEdge(outputTriangleIndices[n], outputTriangleIndices[n + 2], ref edges);
MaintainEdge(outputTriangleIndices[n + 1], outputTriangleIndices[n + 2], ref edges);
//Because fast removals are being used, the order is very important.
//It's pulling indices in from the end of the list in order, and also ensuring
//that we never issue a removal order beyond the end of the list.
outputTriangleIndices.FastRemoveAt(n + 2);
outputTriangleIndices.FastRemoveAt(n + 1);
outputTriangleIndices.FastRemoveAt(n);
}
}
//Create new triangles.
for (int n = 0; n < edges.Count; n += 2)
{
//For each edge, create a triangle with the extreme point.
newTriangles.Add(edges[n]);
newTriangles.Add(edges[n + 1]);
newTriangles.Add(maxIndex);
}
//Only verify the windings of the new triangles.
VerifyWindings(ref newTriangles, ref points, ref insidePoint);
outputTriangleIndices.AddRange(ref newTriangles);
newTriangles.Count = 0;
//Remove all points from the outsidePoints if they are inside the polyhedron
RemoveInsidePoints(ref points, ref outputTriangleIndices, ref outsidePoints);
//The list has been significantly messed with, so restart the loop.
break;
}
}
}
outsidePoints.Dispose();
edges.Dispose();
toRemove.Dispose();
newTriangles.Dispose();
}
public unsafe void TopDownAgglomerativeRefine()
{
var spareNodes = new QuickList<int>(BufferPools<int>.Thread, 8);
TopDownAgglomerativeRefine(0, ref spareNodes);
RemoveUnusedInternalNodes(ref spareNodes);
spareNodes.Dispose();
}
public unsafe void PartialRefine(int offset, int skip, ref QuickList<int> spareNodes, int maximumSubtrees, ref QuickList<int> treeletInternalNodes, ref BinnedResources binnedResources, out bool nodesInvalidated)
{
QuickList<int> subtreeReferences = new QuickList<int>(BufferPools<int>.Thread, BufferPool<int>.GetPoolIndex(maximumSubtrees));
PartialRefine(0, 0, offset, skip, ref subtreeReferences, ref treeletInternalNodes, ref spareNodes, maximumSubtrees, ref binnedResources, out nodesInvalidated);
subtreeReferences.Dispose();
}
/// <summary>
/// Collects a limited set of subtrees hanging from the specified node and performs a local treelet rebuild using a bottom-up agglomerative approach.
/// </summary>
/// <param name="nodeIndex">Root of the refinement treelet.</param>
/// <param name="nodesInvalidated">True if the refinement process invalidated node pointers, false otherwise.</param>
public unsafe void AgglomerativeRefine(int nodeIndex, ref QuickList<int> spareNodes, out bool nodesInvalidated)
{
var maximumSubtrees = ChildrenCapacity * ChildrenCapacity;
var poolIndex = BufferPool<int>.GetPoolIndex(maximumSubtrees);
var subtrees = new QuickList<int>(BufferPools<int>.Thread, poolIndex);
var treeletInternalNodes = new QuickList<int>(BufferPools<int>.Thread, poolIndex);
float originalTreeletCost;
var entries = stackalloc SubtreeHeapEntry[maximumSubtrees];
CollectSubtrees(nodeIndex, maximumSubtrees, entries, ref subtrees, ref treeletInternalNodes, out originalTreeletCost);
//We're going to create a little binary tree via agglomeration, and then we'll collapse it into an n-ary tree.
//Note the size: we first put every possible subtree in, so subtrees.Count.
//Then, we add up subtrees.Count - 1 internal nodes without removing earlier slots.
int tempNodesCapacity = subtrees.Count * 2 - 1;
var tempNodes = stackalloc TempNode[tempNodesCapacity];
int tempNodeCount = subtrees.Count;
int remainingNodesCapacity = subtrees.Count;
var remainingNodes = stackalloc int[remainingNodesCapacity];
int remainingNodesCount = subtrees.Count;
for (int i = 0; i < subtrees.Count; ++i)
{
var tempNode = tempNodes + i;
tempNode->A = Encode(i);
if (subtrees.Elements[i] >= 0)
{
//It's an internal node, so look at the parent.
var subtreeNode = nodes + subtrees.Elements[i];
tempNode->BoundingBox = (&nodes[subtreeNode->Parent].A)[subtreeNode->IndexInParent];
tempNode->LeafCount = (&nodes[subtreeNode->Parent].LeafCountA)[subtreeNode->IndexInParent];
}
else
{
//It's a leaf node, so grab the bounding box from the owning node.
var leafIndex = Encode(subtrees.Elements[i]);
var leaf = leaves + leafIndex;
var parentNode = nodes + leaf->NodeIndex;
tempNode->BoundingBox = (&parentNode->A)[leaf->ChildIndex];
tempNode->LeafCount = 1;
}
//Add a reference to the remaining list.
remainingNodes[i] = i;
}
while (remainingNodesCount >= 2)
{
//Determine which pair of subtrees has the smallest cost.
//(Smallest absolute cost is used instead of *increase* in cost because absolute tends to move bigger objects up the tree, which is desirable.)
float bestCost = float.MaxValue;
int bestA = 0, bestB = 0;
for (int i = 0; i < remainingNodesCount; ++i)
{
for (int j = i + 1; j < remainingNodesCount; ++j)
{
var nodeIndexA = remainingNodes[i];
var nodeIndexB = remainingNodes[j];
BoundingBox merged;
BoundingBox.Merge(ref tempNodes[nodeIndexA].BoundingBox, ref tempNodes[nodeIndexB].BoundingBox, out merged);
var cost = ComputeBoundsMetric(ref merged);
if (cost < bestCost)
{
bestCost = cost;
bestA = i;
bestB = j;
}
}
}
{
//Create a new temp node based on the best pair.
TempNode newTempNode;
newTempNode.A = remainingNodes[bestA];
newTempNode.B = remainingNodes[bestB];
//Remerging here may or may not be faster than repeatedly caching 'best' candidates from above. It is a really, really cheap operation, after all, apart from cache issues.
BoundingBox.Merge(ref tempNodes[newTempNode.A].BoundingBox, ref tempNodes[newTempNode.B].BoundingBox, out newTempNode.BoundingBox);
newTempNode.LeafCount = tempNodes[newTempNode.A].LeafCount + tempNodes[newTempNode.B].LeafCount;
//Remove the best options from the list.
//BestA is always lower than bestB, so remove bestB first to avoid corrupting bestA index.
TempNode.FastRemoveAt(bestB, remainingNodes, ref remainingNodesCount);
TempNode.FastRemoveAt(bestA, remainingNodes, ref remainingNodesCount);
//Add the reference to the new node.
var newIndex = TempNode.Add(ref newTempNode, tempNodes, ref tempNodeCount);
remainingNodes[remainingNodesCount++] = newIndex;
}
}
//The 2-ary proto-treelet is ready.
//Collapse it into an n-ary tree.
const int collapseCount = ChildrenCapacity == 32 ? 4 : ChildrenCapacity == 16 ? 3 : ChildrenCapacity == 8 ? 2 : ChildrenCapacity == 4 ? 1 : 0;
//Remember: All positive indices in the tempnodes array refer to other temp nodes: they are internal references. Encoded references point back to indices in the subtrees list.
Debug.Assert(remainingNodesCount == 1);
int parent = nodes[nodeIndex].Parent;
int indexInParent = nodes[nodeIndex].IndexInParent;
var stagingNodeCapacity = maximumSubtrees - 1;
var stagingNodes = stackalloc Node[maximumSubtrees - 1];
int stagingNodeCount = 0;
float newTreeletCost;
var stagingRootIndex = BuildStagingChild(parent, indexInParent, tempNodes, tempNodeCount - 1, collapseCount, stagingNodes, ref stagingNodeCount, out newTreeletCost);
Debug.Assert(stagingNodeCount < stagingNodeCapacity);
if (newTreeletCost < originalTreeletCost)
{
//The refinement is an actual improvement.
//Apply the staged nodes to real nodes!
int nextInternalNodeIndexToUse = 0;
ReifyStagingNodes(nodeIndex, stagingNodes, ref subtrees, ref treeletInternalNodes, ref nextInternalNodeIndexToUse, ref spareNodes, out nodesInvalidated);
//If any nodes are left over, put them into the spares list for later reuse.
for (int i = nextInternalNodeIndexToUse; i < treeletInternalNodes.Count; ++i)
{
spareNodes.Add(treeletInternalNodes.Elements[i]);
}
}
else
{
nodesInvalidated = false;
}
subtrees.Dispose();
treeletInternalNodes.Dispose();
}
public unsafe void TopDownBinnedRefine(int maximumSubtrees)
{
var pool = BufferPools<int>.Thread;
var spareNodes = new QuickList<int>(pool, 8);
var subtreeReferences = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
var treeletInternalNodes = new QuickList<int>(pool, BufferPool<int>.GetPoolIndex(maximumSubtrees));
int[] buffer;
MemoryRegion region;
BinnedResources resources;
CreateBinnedResources(pool, maximumSubtrees, out buffer, out region, out resources);
TopDownBinnedRefine(0, maximumSubtrees, ref subtreeReferences, ref treeletInternalNodes, ref spareNodes, ref resources);
RemoveUnusedInternalNodes(ref spareNodes);
region.Dispose();
pool.GiveBack(buffer);
spareNodes.Dispose();
subtreeReferences.Dispose();
}
/// <summary>
/// Identifies the points on the surface of hull.
/// </summary>
/// <param name="points">List of points in the set.</param>
/// <param name="outputSurfacePoints">Unique points on the surface of the convex hull.</param>
public static void GetConvexHull(ref QuickList<Vector3> points, IList<Vector3> outputSurfacePoints)
{
var indices = new QuickList<int>(BufferPools<int>.Locking, BufferPool.GetPoolIndex(points.Count * 3));
GetConvexHull(ref points, ref indices, outputSurfacePoints);
indices.Dispose();
}
bool TryToStepUsingContact(ref ContactData contact, ref Vector3 down, out Vector3 newPosition)
{
Vector3 position = characterBody.Position;
//The normal of the contact may not be facing perfectly out to the side.
//The detection process allows a bit of slop.
//Correct it by removing any component of the normal along the local up vector.
Vector3 normal = contact.Normal;
float dot;
Vector3.Dot(ref normal, ref down, out dot);
Vector3 error;
Vector3.Multiply(ref down, dot, out error);
Vector3.Subtract(ref normal, ref error, out normal);
normal.Normalize();
//Now we need to ray cast out from the center of the character in the direction of this normal to check for obstructions.
//Compute the ray origin location. Fire it out of the top of the character; if we're stepping, this must be a valid location.
//Putting it as high as possible helps to reject more invalid step geometry.
Ray ray;
float downRayLength = characterBody.Height;// MaximumStepHeight + upStepMargin;
Vector3.Multiply(ref down, characterBody.Height * .5f - downRayLength, out ray.Position);
Vector3.Add(ref ray.Position, ref position, out ray.Position);
ray.Direction = normal;
//Include a little margin in the length.
//Technically, the character only needs to teleport horizontally by the complicated commented expression.
//That puts it just far enough to have traction on the new surface.
//In practice, the current contact refreshing approach used for many pair types causes contacts to persist horizontally a bit,
//which can cause side effects for the character.
float horizontalOffsetAmount = characterBody.CollisionInformation.Shape.CollisionMargin;// (float)((1 - character.SupportFinder.sinMaximumSlope) * character.Body.CollisionInformation.Shape.CollisionMargin + 0);
float length = characterBody.Radius + horizontalOffsetAmount;// -contact.PenetrationDepth;
if (QueryManager.RayCastHitAnything(ray, length))
{
//The step is obstructed!
newPosition = new Vector3();
return false;
}
//The down-cast ray origin has been verified by the previous ray cast.
//Let's look for a support!
Vector3 horizontalOffset;
Vector3.Multiply(ref normal, length, out horizontalOffset);
Vector3.Add(ref ray.Position, ref horizontalOffset, out ray.Position);
ray.Direction = down;
//Find the earliest hit, if any.
RayHit earliestHit;
if (!QueryManager.RayCast(ray, downRayLength, out earliestHit) || //Can't do anything if it didn't hit.
earliestHit.T <= 0 || //Can't do anything if the hit was invalid.
earliestHit.T - downRayLength > -minimumUpStepHeight || //Don't bother doing anything if the step is too small.
earliestHit.T - downRayLength < -maximumStepHeight - upStepMargin) //Can't do anything if the step is too tall.
{
//No valid hit was detected.
newPosition = new Vector3();
return false;
}
//Ensure the candidate surface supports traction.
Vector3 supportNormal;
Vector3.Normalize(ref earliestHit.Normal, out supportNormal);
//Calibrate the normal to face in the same direction as the down vector for consistency.
Vector3.Dot(ref supportNormal, ref down, out dot);
if (dot < 0)
{
Vector3.Negate(ref supportNormal, out supportNormal);
dot = -dot;
}
//If the new surface does not have traction, do not attempt to step up.
if (dot < ContactCategorizer.TractionThreshold)
{
newPosition = new Vector3();
return false;
}
//Since contact queries are frequently expensive compared to ray cast tests,
//do one more ray cast test. This time, starting from the same position, cast upwards.
//In order to step up, the previous down-ray hit must be at least a character height away from the result of the up-ray.
Vector3.Negate(ref down, out ray.Direction);
//Find the earliest hit, if any.
//RayHit earliestHitUp = new RayHit();
//earliestHitUp.T = float.MaxValue;
float upLength = characterBody.Height - earliestHit.T;
//If the sum of the up and down distances is less than the height, the character can't fit.
if (QueryManager.RayCastHitAnything(ray, upLength))
{
newPosition = new Vector3();
return false;
}
//By now, a valid ray hit has been found. Now we need to validate it using contact queries.
//This process is very similar in concept to the down step verification, but it has some extra
//requirements.
//Predict a hit location based on the time of impact and the normal at the intersection.
//Take into account the radius of the character (don't forget the collision margin!)
RigidTransform transform = characterBody.CollisionInformation.WorldTransform;
//The transform must be modified to position the query body at the right location.
//The horizontal offset of the queries ensures that a tractionable part of the character will be put onto the new support.
Vector3.Multiply(ref normal, horizontalOffsetAmount, out horizontalOffset);
Vector3.Add(ref transform.Position, ref horizontalOffset, out transform.Position);
Vector3 verticalOffset;
Vector3.Multiply(ref down, -downRayLength, out verticalOffset);
Vector3.Add(ref transform.Position, ref verticalOffset, out transform.Position);
//We know that the closest point to the plane will be the extreme point in the plane's direction.
//Use it as the ray origin.
Ray downRay;
characterBody.CollisionInformation.Shape.GetExtremePoint(supportNormal, ref transform, out downRay.Position);
downRay.Direction = down;
//Intersect the ray against the plane defined by the support hit.
Vector3 intersection;
Vector3.Dot(ref earliestHit.Location, ref supportNormal, out dot);
Plane plane = new Plane(supportNormal, dot);
Vector3 candidatePosition;
//Define the interval bounds to be used later.
//The words 'highest' and 'lowest' here refer to the position relative to the character's body.
//The ray cast points downward relative to the character's body.
float highestBound = -maximumStepHeight;
float lowestBound = characterBody.CollisionInformation.Shape.CollisionMargin - downRayLength + earliestHit.T;
float currentOffset = lowestBound;
float hintOffset;
var tractionContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var supportContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var sideContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var headContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
try
{
//This guess may either win immediately, or at least give us a better idea of where to search.
float hitT;
if (Toolbox.GetRayPlaneIntersection(ref downRay, ref plane, out hitT, out intersection))
{
hitT = -downRayLength + hitT + CollisionDetectionSettings.AllowedPenetration;
if (hitT < highestBound)
{
//Don't try a location known to be too high.
hitT = highestBound;
}
currentOffset = hitT;
if (currentOffset > lowestBound)
lowestBound = currentOffset;
candidatePosition = characterBody.Position + down * currentOffset + horizontalOffset;
switch (TryUpStepPosition(ref normal, ref candidatePosition, ref down,
ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts,
out hintOffset))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset < 0 && currentOffset > -maximumStepHeight - CollisionDetectionSettings.AllowedPenetration)
{
//It's possible that we let a just-barely-too-high step occur, limited by the allowed penetration.
//Just clamp the overall motion and let it penetrate a bit.
newPosition = characterBody.Position + Math.Max(-maximumStepHeight, currentOffset) * down + horizontalOffset;
return true;
}
else
{
newPosition = new Vector3();
return false;
}
case CharacterContactPositionState.Rejected:
newPosition = new Vector3();
return false;
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.HeadObstructed:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
} //TODO: If the ray cast doesn't hit, that could be used to early out... Then again, it pretty much can't happen.
//Our guesses failed.
//Begin the regular process. Start at the time of impact of the ray itself.
//How about trying the time of impact of the ray itself?
//Since we wouldn't be here unless there were no contacts at the body's current position,
//testing the ray cast location gives us the second bound we need to do an informed binary search.
int attempts = 0;
//Don't keep querying indefinitely. If we fail to reach it in a few informed steps, it's probably not worth continuing.
//The bound size check prevents the system from continuing to search a meaninglessly tiny interval.
while (attempts++ < 5 && lowestBound - highestBound > Toolbox.BigEpsilon)
{
candidatePosition = characterBody.Position + currentOffset * down + horizontalOffset;
switch (TryUpStepPosition(ref normal, ref candidatePosition, ref down,
ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts,
out hintOffset))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset < 0 && currentOffset > -maximumStepHeight - CollisionDetectionSettings.AllowedPenetration)
{
//It's possible that we let a just-barely-too-high step occur, limited by the allowed penetration.
//Just clamp the overall motion and let it penetrate a bit.
newPosition = characterBody.Position + Math.Max(-maximumStepHeight, currentOffset) * down + horizontalOffset;
return true;
}
else
{
newPosition = new Vector3();
return false;
}
case CharacterContactPositionState.Rejected:
newPosition = new Vector3();
return false;
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + highestBound) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + lowestBound) * .5f;
break;
case CharacterContactPositionState.HeadObstructed:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + currentOffset) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
}
}
finally
{
tractionContacts.Dispose();
supportContacts.Dispose();
sideContacts.Dispose();
headContacts.Dispose();
}
//Couldn't find a candidate.
newPosition = new Vector3();
return false;
}
public override void Update( float dt )
{
//Refresh the contact manifold for this frame.
var transform = new RigidTransform( voxelBlob.Position );
var convexTransform = convex.WorldTransform;
ContactRefresher.ContactRefresh( contacts, supplementData, ref convexTransform, ref transform, contactIndicesToRemove );
RemoveQueuedContacts();
//Collect the set of overlapped cell indices.
//Not the fastest way to do this, but it's relatively simple and easy.
var overlaps = new QuickList<Int3>( BufferPools<Int3>.Thread );
voxelBlob.Shape.GetOverlaps( voxelBlob.Position, convex.BoundingBox, ref overlaps );
var candidatesToAdd = new QuickList<ContactData>( BufferPools<ContactData>.Thread, BufferPool<int>.GetPoolIndex( overlaps.Count ) );
for( int i = 0; i < overlaps.Count; ++i )
{
GeneralConvexPairTester manifold;
if( !ActivePairs.TryGetValue( overlaps.Elements[i], out manifold ) )
{
//This manifold did not previously exist.
manifold = GetPair( ref overlaps.Elements[i] );
}
else
{
//It did previously exist.
ActivePairs.FastRemove( overlaps.Elements[i] );
}
activePairsBackBuffer.Add( overlaps.Elements[i], manifold );
ContactData contactCandidate;
if( manifold.GenerateContactCandidate( out contactCandidate ) )
{
candidatesToAdd.Add( ref contactCandidate );
}
}
overlaps.Dispose();
//Any pairs remaining in the activePairs set no longer exist. Clean them up.
for( int i = ActivePairs.Count - 1; i >= 0; --i )
{
ReturnPair( ActivePairs.Values[i] );
ActivePairs.FastRemove( ActivePairs.Keys[i] );
}
//Swap the pair sets.
var temp = ActivePairs;
ActivePairs = activePairsBackBuffer;
activePairsBackBuffer = temp;
//Check if adding the new contacts would overflow the manifold.
if( contacts.Count + candidatesToAdd.Count > 4 )
{
//Adding all the contacts would overflow the manifold. Reduce to the best subset.
var reducedCandidates = new QuickList<ContactData>( BufferPools<ContactData>.Thread, 3 );
ContactReducer.ReduceContacts( contacts, ref candidatesToAdd, contactIndicesToRemove, ref reducedCandidates );
RemoveQueuedContacts();
for( int i = reducedCandidates.Count - 1; i >= 0; i-- )
{
Add( ref reducedCandidates.Elements[i] );
reducedCandidates.RemoveAt( i );
}
reducedCandidates.Dispose();
}
else if( candidatesToAdd.Count > 0 )
{
//Won't overflow the manifold, so just toss it in.
for( int i = 0; i < candidatesToAdd.Count; i++ )
{
Add( ref candidatesToAdd.Elements[i] );
}
}
candidatesToAdd.Dispose();
}
/// <summary>
/// Checks if a transition from the current stance to the target stance is possible given the current environment.
/// </summary>
/// <param name="targetStance">Stance to check for transition safety.</param>
/// <param name="newHeight">If the transition is safe, the new height of the character. Zero otherwise.</param>
/// <param name="newPosition">If the transition is safe, the new location of the character body if the transition occurred. Zero vector otherwise.</param>
/// <returns>True if the target stance is different than the current stance and the transition is valid, false otherwise.</returns>
public bool CheckTransition(Stance targetStance, out float newHeight, out Vector3 newPosition)
{
var currentPosition = characterBody.position;
var down = characterBody.orientationMatrix.Down;
newPosition = new Vector3();
newHeight = 0;
if (CurrentStance != targetStance)
{
float currentHeight;
switch (CurrentStance)
{
case Stance.Prone:
currentHeight = proneHeight;
break;
case Stance.Crouching:
currentHeight = crouchingHeight;
break;
default:
currentHeight = standingHeight;
break;
}
float targetHeight;
switch (targetStance)
{
case Stance.Prone:
targetHeight = proneHeight;
break;
case Stance.Crouching:
targetHeight = crouchingHeight;
break;
default:
targetHeight = standingHeight;
break;
}
if (currentHeight >= targetHeight)
{
//The character is getting smaller, so no validation queries are required.
if (SupportFinder.HasSupport)
{
//On the ground, so need to move the position down.
newPosition = currentPosition + down * ((currentHeight - targetHeight) * 0.5f);
}
else
{
//We're in the air, so we don't have to change the position at all- just change the height.
newPosition = currentPosition;
}
newHeight = targetHeight;
return true;
}
//The character is getting bigger, so validation is required.
ConvexCollidable<CylinderShape> queryObject;
switch (targetStance)
{
case Stance.Prone:
queryObject = proneQueryObject;
break;
case Stance.Crouching:
queryObject = crouchingQueryObject;
break;
default:
queryObject = standingQueryObject;
break;
}
var tractionContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var supportContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var sideContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
var headContacts = new QuickList<CharacterContact>(BufferPools<CharacterContact>.Thread);
try
{
if (SupportFinder.HasSupport)
{
//Increasing in size requires a query to verify that the new state is safe.
//TODO: State queries can be expensive if the character is crouching beneath something really detailed.
//There are some situations where you may want to do an upwards-pointing ray cast first. If it hits something,
//there's no need to do the full query.
newPosition = currentPosition - down * ((targetHeight - currentHeight) * .5f);
PrepareQueryObject(queryObject, ref newPosition);
QueryManager.QueryContacts(queryObject, ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts);
if (IsObstructed(ref sideContacts, ref headContacts))
{
//Can't stand up if something is in the way!
return false;
}
newHeight = targetHeight;
return true;
}
else
{
//This is a complicated case. We must perform a semi-downstep query.
//It's different than a downstep because the head may be obstructed as well.
float highestBound = 0;
float lowestBound = (targetHeight - currentHeight) * .5f;
float currentOffset = lowestBound;
float maximum = lowestBound;
int attempts = 0;
//Don't keep querying indefinitely. If we fail to reach it in a few informed steps, it's probably not worth continuing.
//The bound size check prevents the system from continuing to search a meaninglessly tiny interval.
while (attempts++ < 5 && lowestBound - highestBound > Toolbox.BigEpsilon)
{
Vector3 candidatePosition = currentPosition + currentOffset * down;
float hintOffset;
switch (TrySupportLocation(queryObject, ref candidatePosition, out hintOffset, ref tractionContacts, ref supportContacts, ref sideContacts, ref headContacts))
{
case CharacterContactPositionState.Accepted:
currentOffset += hintOffset;
//Only use the new position location if the movement distance was the right size.
if (currentOffset > 0 && currentOffset < maximum)
{
newPosition = currentPosition + currentOffset * down;
newHeight = targetHeight;
return true;
}
else
{
return false;
}
case CharacterContactPositionState.NoHit:
highestBound = currentOffset + hintOffset;
currentOffset = (lowestBound + highestBound) * .5f;
break;
case CharacterContactPositionState.Obstructed:
lowestBound = currentOffset;
currentOffset = (highestBound + lowestBound) * .5f;
break;
case CharacterContactPositionState.TooDeep:
currentOffset += hintOffset;
lowestBound = currentOffset;
break;
}
}
//Couldn't find a hit. Go ahead and get bigger!
newPosition = currentPosition;
newHeight = targetHeight;
return true;
}
}
finally
{
tractionContacts.Dispose();
supportContacts.Dispose();
sideContacts.Dispose();
headContacts.Dispose();
}
}
return false;
}
private static void RemoveInsidePoints(ref QuickList<Vector3> points, ref QuickList<int> triangleIndices, ref QuickList<int> outsidePoints)
{
var insidePoints = new QuickList<int>(BufferPools<int>.Locking);
//We're going to remove points from this list as we go to prune it down to the truly inner points.
insidePoints.AddRange(outsidePoints);
outsidePoints.Clear();
for (int i = 0; i < triangleIndices.Count && insidePoints.Count > 0; i += 3)
{
//Compute the triangle's plane in point-normal representation to test other points against.
Vector3 normal;
FindNormal(ref triangleIndices, ref points, i, out normal);
Vector3 p = points.Elements[triangleIndices.Elements[i]];
for (int j = insidePoints.Count - 1; j >= 0; --j)
{
//Offset from the triangle to the current point, tested against the normal, determines if the current point is visible
//from the triangle face.
Vector3 offset = points.Elements[insidePoints.Elements[j]] - p;
float dot = Vector3.Dot(offset, normal);
//If it's visible, then it's outside!
if (dot > 0)
{
//This point is known to be on the outside; put it on the outside!
outsidePoints.Add(insidePoints.Elements[j]);
insidePoints.FastRemoveAt(j);
}
}
}
insidePoints.Dispose();
}
public override void Update(double dt)
{
RigidTransform transform = new RigidTransform(mesh.Position);
RigidTransform convexTransform = convex.WorldTransform;
ContactRefresher.ContactRefresh(contacts, supplementData, ref convexTransform, ref transform, contactIndicesToRemove);
RemoveQueuedContacts();
var overlaps = new QuickList<Vector3i>(BufferPools<Vector3i>.Thread);
mesh.ChunkShape.GetOverlaps(mesh.Position, convex.BoundingBox, ref overlaps);
var candidatesToAdd = new QuickList<ContactData>(BufferPools<ContactData>.Thread, BufferPool<int>.GetPoolIndex(overlaps.Count));
for (int i = 0; i < overlaps.Count; i++)
{
GeneralConvexPairTester manifold;
if (!ActivePairs.TryGetValue(overlaps.Elements[i], out manifold))
{
manifold = GetPair(ref overlaps.Elements[i]);
}
else
{
ActivePairs.FastRemove(overlaps.Elements[i]);
}
activePairsBackBuffer.Add(overlaps.Elements[i], manifold);
ContactData contactCandidate;
if (manifold.GenerateContactCandidate(out contactCandidate))
{
candidatesToAdd.Add(ref contactCandidate);
}
}
overlaps.Dispose();
for (int i = ActivePairs.Count - 1; i >= 0; i--)
{
ReturnPair(ActivePairs.Values[i]);
ActivePairs.FastRemove(ActivePairs.Keys[i]);
}
var temp = ActivePairs;
ActivePairs = activePairsBackBuffer;
activePairsBackBuffer = temp;
if (contacts.Count + candidatesToAdd.Count > 4)
{
var reducedCandidates = new QuickList<ContactData>(BufferPools<ContactData>.Thread, 3);
ContactReducer.ReduceContacts(contacts, ref candidatesToAdd, contactIndicesToRemove, ref reducedCandidates);
RemoveQueuedContacts();
for (int i = reducedCandidates.Count - 1; i >= 0; i--)
{
Add(ref reducedCandidates.Elements[i]);
reducedCandidates.RemoveAt(i);
}
reducedCandidates.Dispose();
}
else if (candidatesToAdd.Count > 0)
{
for (int i = 0; i < candidatesToAdd.Count; i++)
{
Add(ref candidatesToAdd.Elements[i]);
}
}
candidatesToAdd.Dispose();
}
public static void TestBaseline(TestCollidable[] leaves, BoundingBox[] queries, int queryCount, int selfTestCount, int refitCount)
{
{
var warmLeaves = GetLeaves(10, 10, 10, 10, 10);
BaselineTree tree = new BaselineTree();
//for (int i = 0; i < leaves.Length; ++i)
//{
// tree.Insert(warmLeaves[i]);
//}
//tree.BuildMedianSplit(warmLeaves);
tree.BuildVolumeHeuristic(warmLeaves);
Console.WriteLine($"Baseline Cachewarm Build: {tree.LeafCount}");
tree.RefitLeaves();
tree.Refit();
var list = new QuickList<int>(new BufferPool<int>());
BoundingBox aabb = new BoundingBox { Min = new Vector3(0, 0, 0), Max = new Vector3(1, 1, 1) };
tree.QueryRecursive(ref aabb, ref list);
list.Dispose();
var overlaps = new QuickList<Overlap<TestCollidable>>(new BufferPool<Overlap<TestCollidable>>());
tree.GetSelfOverlaps(ref overlaps);
Console.WriteLine($"Cachewarm overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap<TestCollidable>>(new BufferPool<Overlap<TestCollidable>>());
tree.GetSelfOverlapsViaQueries(ref overlaps);
Console.WriteLine($"Cachewarm overlaps: {overlaps.Count}");
tree.Dispose();
}
{
Console.WriteLine($"Baseline arity: {BaselineTree.ChildrenCapacity}");
BaselineTree tree = new BaselineTree(leaves.Length, 32);
var startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
//for (int i = 0; i < leaves.Length; ++i)
//{
// tree.Insert(leaves[(int)((982451653L * i) % leaves.Length)]);
// //tree.InsertGlobal(leaves[(int)((982451653L * i) % leaves.Length)]);
// //tree.Insert(leaves[i]);
// //tree.InsertGlobal(leaves[i]);
//}
//tree.BuildMedianSplit(leaves);
tree.BuildVolumeHeuristic(leaves);
var endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Baseline Build Time: {endTime - startTime}, depth: {tree.MaximumDepth}");
Console.WriteLine($"Cost heuristic: {tree.MeasureCostHeuristic()}");
tree.Validate();
//var leafCount = tree.LeafCount;
//for (int i = 0; i < leafCount; ++i)
//{
// tree.RemoveAt(0);
// tree.Validate();
//}
int nodeCount, childCount;
tree.MeasureNodeOccupancy(out nodeCount, out childCount);
Console.WriteLine($"Baseline Occupancy: {childCount / (double)nodeCount}");
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < refitCount; ++i)
{
//tree.RefitLeaves();
tree.Refit();
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Baseline Refit Time: {endTime - startTime}");
var list = new QuickList<int>(new BufferPool<int>());
var queryMask = queries.Length - 1;
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < queryCount; ++i)
{
list.Count = 0;
//tree.Query(ref queries[i & queryMask], ref list);
tree.QueryRecursive(ref queries[i & queryMask], ref list);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Baseline Query Time: {endTime - startTime}, overlaps: {list.Count}");
Array.Clear(list.Elements, 0, list.Elements.Length);
list.Dispose();
var overlaps = new QuickList<Overlap<TestCollidable>>(new BufferPool<Overlap<TestCollidable>>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlaps(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Baseline SelfTree Time: {endTime - startTime}, overlaps: {overlaps.Count}");
overlaps = new QuickList<Overlap<TestCollidable>>(new BufferPool<Overlap<TestCollidable>>());
startTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
for (int i = 0; i < selfTestCount; ++i)
{
overlaps.Count = 0;
tree.GetSelfOverlapsViaQueries(ref overlaps);
}
endTime = Stopwatch.GetTimestamp() / (double)Stopwatch.Frequency;
Console.WriteLine($"Baseline SelfQuery Time: {endTime - startTime}, overlaps: {overlaps.Count}");
tree.Dispose();
}
}
