public void Execute()
{
var maxPairs = GeometryMath.GetTriangleArraySize(treeBrushIndices.Length);
var brushPairMap = new NativeHashMap <BrushPair, FindBrushPairsJob.Empty>(maxPairs, Allocator.Temp);
var empty = new Empty();
for (int b0 = 0; b0 < treeBrushIndices.Length; b0++)
{
var brushNodeIndex0 = treeBrushIndices[b0];
//var brushesTouchedByBrush = touchedBrushesByTreeBrushes[b0];
if (!brushesTouchedByBrushes.TryGetValue(brushNodeIndex0, out BlobAssetReference <BrushesTouchedByBrush> brushesTouchedByBrush))
{
continue;
}
ref var intersections = ref brushesTouchedByBrush.Value.brushIntersections;
if (intersections.Length == 0)
{
continue;
}
// Find all intersections between brushes
for (int i = 0; i < intersections.Length; i++)
{
var intersection = intersections[i];
var brushNodeIndex1 = intersection.nodeIndex;
var brushPair = new BrushPair
{
type = intersection.type,
brushNodeIndex0 = brushNodeIndex0,
brushNodeIndex1 = brushNodeIndex1
};
if (brushNodeIndex0 > brushNodeIndex1) // ensures we do calculations exactly the same for each brush pair
{
brushPair.Flip();
}
if (brushPairMap.TryAdd(brushPair, empty))
{
uniqueBrushPairs.AddNoResize(brushPair);
}
}
}
static bool IsDegenerate(HashedVertices hashedVertices, NativeArray <Edge> edges, int edgeCount)
{
if (edgeCount < 3)
{
return(true);
}
for (int i = 0; i < edgeCount; i++)
{
var vertexIndex1 = edges[i].index1;
var vertex1 = hashedVertices[vertexIndex1];
for (int j = 0; j < edgeCount; j++)
{
if (i == j)
{
continue;
}
var vertexIndexA = edges[j].index1;
var vertexIndexB = edges[j].index2;
// Loop loops back on same vertex
if (vertexIndex1 == vertexIndexA ||
vertexIndex1 == vertexIndexB ||
vertexIndexA == vertexIndexB)
{
continue;
}
var vertexA = hashedVertices[vertexIndexA];
var vertexB = hashedVertices[vertexIndexB];
var distance = GeometryMath.SqrDistanceFromPointToLineSegment(vertex1, vertexA, vertexB);
if (distance <= CSGConstants.kSqrDistanceEpsilon)
{
return(true);
}
}
}
return(false);
}