private bool SliceMesh(Mesh mesh, ref Plane slice)
{
mesh.GetVertices(_originalVertices);
if (!MeshIntersection.BoundPlaneIntersect(mesh, ref slice))
{
return(false);
}
mesh.GetTriangles(_originalTriangles, 0);
mesh.GetNormals(_originalNormals);
mesh.GetUVs(0, _originalUVs);
_meshA.Clear();
_meshB.Clear();
_addedPairs.Clear();
for (int i = 0; i < _originalVertices.Count; ++i)
{
if (slice.GetDistanceToPoint(_originalVertices[i]) >= 0)
{
_meshA.AddVertex(_originalVertices, _originalNormals, _originalUVs, i);
}
else
{
_meshB.AddVertex(_originalVertices, _originalNormals, _originalUVs, i);
}
}
if (_meshB.Vertices.Count == 0 || _meshA.Vertices.Count == 0)
{
return(false);
}
for (int i = 0; i < _originalTriangles.Count; i += 3)
{
if (_intersection.TrianglePlaneIntersect(_originalVertices, _originalUVs, _originalTriangles, i, ref slice, _meshA, _meshB, _intersectPairs))
{
_addedPairs.AddRange(_intersectPairs);
}
}
if (_addedPairs.Count > 0)
{
FillBoundaryFace(_addedPairs);
return(true);
}
return(false);
}
public MeshSlicer()
{
_originalVertices = new List <Vector3> (INITIAL_ARRAY_SIZE);
_originalTriangles = new List <int> (INITIAL_ARRAY_SIZE * 3);
_originalNormals = new List <Vector3> (INITIAL_ARRAY_SIZE);
_originalUVs = new List <Vector2> (INITIAL_ARRAY_SIZE);
_intersectPairs = new Vector3[2];
_tempTriangles = new Vector3[3];
_addedPairs = new List <Vector3> (INITIAL_ARRAY_SIZE);
_intersection = new MeshIntersection();
_meshA = new MeshPiece(INITIAL_ARRAY_SIZE);
_meshB = new MeshPiece(INITIAL_ARRAY_SIZE);
}