void FindIntersectionVertices(ref NativeArray <float4> intersectingPlanes0,
int intersectingPlanes0Length,
int intersectingPlanesAndEdges0Length,
ref NativeArray <float4> intersectingPlanes1,
int intersectingPlanes1Length,
int intersectingPlanesAndEdges1Length,
ref NativeArray <PlanePair> usedPlanePairs1,
int usedPlanePairs1Length,
ref NativeArray <int> intersectingPlaneIndices0,
int intersectingPlaneIndices0Length,
float4x4 nodeToTreeSpaceMatrix0,
ref HashedVertices hashedTreeSpaceVertices,
ref HashedVertices snapHashedVertices,
NativeArray <PlaneVertexIndexPair> foundIndices0,
ref int foundIndices0Length,
NativeArray <PlaneVertexIndexPair> foundIndices1,
ref int foundIndices1Length)
{
int foundVerticesCount = usedPlanePairs1Length * intersectingPlanes0Length;
NativeCollectionHelpers.EnsureMinimumSize(ref foundVertices, foundVerticesCount);
NativeCollectionHelpers.EnsureMinimumSize(ref foundEdges, foundVerticesCount);
NativeCollectionHelpers.EnsureMinimumSize(ref foundIntersections, foundVerticesCount);
var n = 0;
for (int i = 0; i < usedPlanePairs1Length; i++)
{
for (int j = 0; j < intersectingPlanes0Length; j++)
{
var plane0 = usedPlanePairs1[i].plane0;
var plane1 = usedPlanePairs1[i].plane1;
var plane2 = intersectingPlanes0[j];
foundIntersections[n] = new IntersectionPlanes
{
//plane0 = plane0,
//plane1 = plane1,
plane2 = plane2,
planeIndex0 = usedPlanePairs1[i].planeIndex0,
planeIndex1 = usedPlanePairs1[i].planeIndex1,
planeIndex2 = intersectingPlaneIndices0[j]
};
foundEdges[n] = new IntersectionEdge
{
edgeVertex0 = usedPlanePairs1[i].edgeVertex0,
edgeVertex1 = usedPlanePairs1[i].edgeVertex1
};
if (math.abs(math.dot(plane2.xyz, plane0.xyz)) >= CSGConstants.kNormalDotAlignEpsilon ||
math.abs(math.dot(plane2.xyz, plane1.xyz)) >= CSGConstants.kNormalDotAlignEpsilon ||
math.abs(math.dot(plane0.xyz, plane1.xyz)) >= CSGConstants.kNormalDotAlignEpsilon)
{
continue;
}
var localVertex = PlaneExtensions.Intersection(plane2, plane0, plane1);
if (double.IsNaN(localVertex.x))
{
continue;
}
foundVertices[n] = new float4((float3)localVertex, 1);
n++;
}
}
for (int k = n - 1; k >= 0; k--)
{
var edgeVertex0 = foundEdges[k].edgeVertex0;
var edgeVertex1 = foundEdges[k].edgeVertex1;
var plane2 = foundIntersections[k].plane2;
if (math.abs(math.dot(plane2, edgeVertex0)) <= kFatPlaneWidthEpsilon &&
math.abs(math.dot(plane2, edgeVertex1)) <= kFatPlaneWidthEpsilon)
{
if (k < n - 1)
{
foundIntersections[k] = foundIntersections[n - 1];
foundVertices[k] = foundVertices[n - 1];
}
n--;
}
}
// TODO: since we're using a pair in the outer loop, we could also determine which
// 2 planes it intersects at both ends and just check those two planes ..
// NOTE: for brush2, the intersection will always be only on two planes
// UNLESS it's a corner vertex along that edge (we can compare to the two vertices)
// in which case we could use a pre-calculated list of planes ..
// OR when the intersection is outside of the edge ..
for (int k = n - 1; k >= 0; k--)
{
if (IsOutsidePlanes(intersectingPlanes0, intersectingPlanesAndEdges0Length, foundVertices[k]) ||
IsOutsidePlanes(intersectingPlanes1, intersectingPlanesAndEdges1Length, foundVertices[k]))
{
if (k < n - 1)
{
foundIntersections[k] = foundIntersections[n - 1];
foundVertices[k] = foundVertices[n - 1];
}
n--;
}
}
for (int k = 0; k < n; k++)
{
var planeIndex0 = (ushort)foundIntersections[k].planeIndex0;
var planeIndex1 = (ushort)foundIntersections[k].planeIndex1;
var planeIndex2 = (ushort)foundIntersections[k].planeIndex2;
var localVertex = foundVertices[k];
// TODO: should be having a Loop for each plane that intersects this vertex, and add that vertex
// to ensure they are identical
var treeSpaceVertex = math.mul(nodeToTreeSpaceMatrix0, localVertex).xyz;
treeSpaceVertex = snapHashedVertices[snapHashedVertices.AddNoResize(treeSpaceVertex)];
var treeSpaceVertexIndex = hashedTreeSpaceVertices.AddNoResize(treeSpaceVertex);
{
// TODO: optimize
for (int f = 0; f < foundIndices0Length; f++)
{
if (foundIndices0[f].vertexIndex == treeSpaceVertexIndex &&
foundIndices0[f].planeIndex == planeIndex2)
{
goto skip0;
}
}
foundIndices0[foundIndices0Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex2, vertexIndex = treeSpaceVertexIndex
};
foundIndices0Length++;
skip0 :;
}
{
// TODO: optimize
for (int f = 0; f < foundIndices1Length; f++)
{
if (foundIndices1[f].vertexIndex == treeSpaceVertexIndex &&
foundIndices1[f].planeIndex == planeIndex0)
{
goto skip1;
}
}
foundIndices1[foundIndices1Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex0, vertexIndex = treeSpaceVertexIndex
};
foundIndices1Length++;
skip1 :;
}
{
// TODO: optimize
for (int f = 0; f < foundIndices1Length; f++)
{
if (foundIndices1[f].vertexIndex == treeSpaceVertexIndex &&
foundIndices1[f].planeIndex == planeIndex1)
{
goto skip2;
}
}
foundIndices1[foundIndices1Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex1, vertexIndex = treeSpaceVertexIndex
};
foundIndices1Length++;
skip2 :;
}
}
}
//[MethodImpl(MethodImplOptions.NoInlining)]
void FindIntersectionVertices(ref BlobArray <float4> intersectingPlanes0,
ref BlobArray <float4> intersectingPlanes1,
ref BlobArray <PlanePair> usedPlanePairs1,
ref BlobArray <int> intersectingPlaneIndices0,
float4x4 nodeToTreeSpaceMatrix0,
//ref HashedVertices hashedVertices,
NativeArray <PlaneVertexIndexPair> foundIndices0,
ref int foundIndices0Length,
NativeArray <PlaneVertexIndexPair> foundIndices1,
ref int foundIndices1Length)
{
var foundVertices = new NativeArray <float4>(usedPlanePairs1.Length * intersectingPlanes0.Length, Allocator.Temp);
var foundEdges = new NativeArray <IntersectionEdge>(usedPlanePairs1.Length * intersectingPlanes0.Length, Allocator.Temp);
var foundIntersections = new NativeArray <IntersectionPlanes>(usedPlanePairs1.Length * intersectingPlanes0.Length, Allocator.Temp);
var n = 0;
for (int i = 0; i < usedPlanePairs1.Length; i++)
{
for (int j = 0; j < intersectingPlanes0.Length; j++)
{
foundIntersections[n] = new IntersectionPlanes
{
plane0 = usedPlanePairs1[i].plane0,
plane1 = usedPlanePairs1[i].plane1,
plane2 = intersectingPlanes0[j],
planeIndex0 = usedPlanePairs1[i].planeIndex0,
planeIndex1 = usedPlanePairs1[i].planeIndex1,
planeIndex2 = intersectingPlaneIndices0[j]
};
foundEdges[n] = new IntersectionEdge
{
edgeVertex0 = usedPlanePairs1[i].edgeVertex0,
edgeVertex1 = usedPlanePairs1[i].edgeVertex1
};
var plane0 = usedPlanePairs1[i].plane0;
var plane1 = usedPlanePairs1[i].plane1;
var plane2 = intersectingPlanes0[j];
foundVertices[n] = new float4(PlaneExtensions.Intersection(plane2, plane0, plane1), 1);
n++;
}
}
for (int k = n - 1; k >= 0; k--)
{
var edgeVertex0 = foundEdges[k].edgeVertex0;
var edgeVertex1 = foundEdges[k].edgeVertex1;
var plane2 = foundIntersections[k].plane2;
if (math.abs(math.dot(plane2, edgeVertex0)) <= kDistanceEpsilon &&
math.abs(math.dot(plane2, edgeVertex1)) <= kDistanceEpsilon)
{
if (k < n - 1)
{
foundIntersections[k] = foundIntersections[n - 1];
foundVertices[k] = foundVertices[n - 1];
}
n--;
}
}
// TODO: since we're using a pair in the outer loop, we could also determine which
// 2 planes it intersects at both ends and just check those two planes ..
// NOTE: for brush2, the intersection will always be only on two planes
// UNLESS it's a corner vertex along that edge (we can compare to the two vertices)
// in which case we could use a pre-calculated list of planes ..
// OR when the intersection is outside of the edge ..
for (int k = n - 1; k >= 0; k--)
{
if (IsOutsidePlanes(ref intersectingPlanes0, foundVertices[k]) ||
IsOutsidePlanes(ref intersectingPlanes1, foundVertices[k]))
{
if (k < n - 1)
{
foundIntersections[k] = foundIntersections[n - 1];
foundVertices[k] = foundVertices[n - 1];
}
n--;
}
}
for (int k = 0; k < n; k++)
{
var planeIndex0 = (ushort)foundIntersections[k].planeIndex0;
var planeIndex1 = (ushort)foundIntersections[k].planeIndex1;
var planeIndex2 = (ushort)foundIntersections[k].planeIndex2;
var localVertex = foundVertices[k];
// TODO: should be having a Loop for each plane that intersects this vertex, and add that vertex
// to ensure they are identical
var treeSpaceVertex = math.mul(nodeToTreeSpaceMatrix0, localVertex).xyz;
var vertexIndex = hashedVertices.AddNoResize(treeSpaceVertex);
foundIndices0[foundIndices0Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex2, vertexIndex = vertexIndex
};
foundIndices0Length++;
foundIndices1[foundIndices1Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex0, vertexIndex = vertexIndex
};
foundIndices1Length++;
foundIndices1[foundIndices1Length] = new PlaneVertexIndexPair {
planeIndex = planeIndex1, vertexIndex = vertexIndex
};
foundIndices1Length++;
}
}