private void RemoveStaleNodes()
{
List <PlanetNode> nodesToRemove = new List <PlanetNode>();
foreach (PlanetNode n in activePatches.Values)
{
if (n.remove)
{
nodesToRemove.Add(n);
}
}
if (PlanetBuilder.GetBuiltNodesQueueSize(Name) == 0 && PlanetBuilder.GetQueueSize() == 0)
{
foreach (PlanetNode n in nodesToRemove)
{
RemovePatch(n);
}
nodesToRemove.Clear();
}
}
private void AddNodeIfNotPresent(Vector3 normal, float step, int depth, Vector3 min, Vector3 max)
{
//don't build if already under way.
Vector3 mid = (min + max) / 2;
if (nodesBeingBuilt.ContainsKey(mid))
{
return;
}
if (activePatches.ContainsKey(mid))
{
PlanetNode node = activePatches[mid];
node.remove = false;
return;
}
var patchBeingBuilt = new PatchMinMax(min, max);
nodesBeingBuilt.Add(mid, patchBeingBuilt);
PlanetBuilder.Enqueue(testEffect, module, this, depth, min, max, step, normal, radius);
}
public void Update(GameTime gameTime)
{
Vector3 planetCenter = Transform.AbsoluteTransform.Translation;
Vector3 toCenterOfPlanet = Transform.AbsoluteTransform.Translation - SystemCore.ActiveCamera.Position;
float distanceToCenterOfPlanet = toCenterOfPlanet.Length();
float surfaceDistance = distanceToCenterOfPlanet - radius;
if (HasAtmosphere)
{
atmosphere.Update(sunDirection, SystemCore.ActiveCamera.Position, distanceToCenterOfPlanet);
atmosphericScatteringHelper.Update(distanceToCenterOfPlanet, sunDirection, SystemCore.ActiveCamera.Position - Transform.AbsoluteTransform.Translation);
}
float farPlaneMultiplier = MonoMathHelper.MapFloatRange(radius, radius * 2, 0.3f, 1f, surfaceDistance);
GenerateCustomProjectionMatrix(distanceToCenterOfPlanet * farPlaneMultiplier);
var frustrum = new BoundingFrustum(SystemCore.ActiveCamera.View * customProjection);
int activeCount = 0;
foreach (PlanetNode node in activePatches.Values)
{
node.Update();
//all nodes are flagged for removal every frame.
//The LOD calculation will unflag if nodes should be kept.
node.remove = true;
if (!frustrum.Intersects(node.boundingSphere))
{
node.Disable();
}
else
{
if (SystemWarGlobalSettings.RenderQuadtreeConnectivity)
{
RenderConnections(node);
}
node.Enable();
activeCount++;
}
}
if (SystemWarGlobalSettings.RepairSeams)
{
CalculateConnectivity();
}
for (int i = 0; i < rootNodes.Count; i++)
{
PlanetNode root = rootNodes[i];
CalculatePatchLOD(root.normal, root.step, root.depth, root.min, root.max);
}
//removes nodes that have not had their flags refreshed by the LOD pass
RemoveStaleNodes();
int patchCountPerFrame = 10;
for (int i = 0; i < patchCountPerFrame; i++)
{
PlanetNode finishedNode;
if (PlanetBuilder.GetBuiltNodes(Name, out finishedNode))
{
AddPatch(finishedNode);
}
}
}
