// BEN-PATCH: Someone else's patch... needs testing but the idea seems correct.
/// <summary>
/// GetTrianglesIntersectingtAABox
/// </summary>
/// <param name="triangles"></param>
/// <param name="maxTriangles"></param>
/// <param name="bb"></param>
/// <returns>int</returns>
public unsafe int GetTrianglesIntersectingtAABox(int *triangles, int maxTriangles, ref BoundingBox bb)
{
// rotated aabb
BoundingBox rotBB = bb;
Vector3 bbCorner = new Vector3();
Vector3 bbCornerT;
for (int a = 0; a < 2; a++)
{
for (int b = 0; b < 2; b++)
{
for (int c = 0; c < 2; c++)
{
bbCorner.X = ((a == 0) ? bb.Min.X : bb.Max.X);
bbCorner.Y = ((b == 0) ? bb.Min.Y : bb.Max.Y);
bbCorner.Z = ((c == 0) ? bb.Min.Z : bb.Max.Z);
bbCornerT = Vector3.Transform(bbCorner, invTransform);
BoundingBoxHelper.AddPoint(ref bbCornerT, ref rotBB);
}
}
}
return(octree.GetTrianglesIntersectingtAABox(triangles, maxTriangles, ref rotBB));
}
public unsafe int GetTrianglesIntersectingtAABox(int *triangles, int maxTriangles, ref BoundingBox bb)
{
// move segment into octree space
Vector3 aabbMin = Vector3.Transform(bb.Min, invTransform);
Vector3 aabbMax = Vector3.Transform(bb.Max, invTransform);
// rotated aabb
BoundingBox rotBB = bb;
BoundingBoxHelper.AddPoint(ref aabbMin, ref rotBB);
BoundingBoxHelper.AddPoint(ref aabbMax, ref rotBB);
return(octree.GetTrianglesIntersectingtAABox(triangles, maxTriangles, ref rotBB));
}