public bool Compute()
{
DMesh3 copy = new DMesh3(Mesh);
//Frame3f PlaneO = SceneTransforms.SceneToObject(TargetSO, PlaneS);
Vector3f PlaneNormal = Plane.GetAxis(nPlaneAxis);
MeshPlaneCut cut = new MeshPlaneCut(copy, Plane.Origin, PlaneNormal);
cut.Cut();
Loops = new DCurve3[cut.CutLoops.Count];
for (int li = 0; li < cut.CutLoops.Count; ++li)
{
EdgeLoop edgeloop = cut.CutLoops[li];
DCurve3 loop = MeshUtil.ExtractLoopV(copy, edgeloop.Vertices);
// [TODO] collapse degenerate points...
if (NormalOffset > 0)
{
for (int i = 0; i < loop.VertexCount; ++i)
{
Vector3f n = Vector3f.Zero;
if (copy.HasVertexNormals)
{
n = (Vector3f)copy.GetVertexNormal(edgeloop.Vertices[i]);
}
else
{
n = (Vector3f)MeshNormals.QuickCompute(Mesh, edgeloop.Vertices[i]);
}
n -= n.Dot(PlaneNormal) * PlaneNormal;
n.Normalize();
loop[i] += NormalOffset * (Vector3d)n;
}
}
Loops[li] = loop;
}
return(Loops.Length > 0);
}
static GeneralPolygon2d GetPolygonFromMesh(string sPath)
{
DMesh3 mesh = StandardMeshReader.ReadMesh(sPath);
MeshBoundaryLoops loops = new MeshBoundaryLoops(mesh);
PlanarComplex complex = new PlanarComplex();
foreach (var loop in loops)
{
Polygon2d poly = new Polygon2d();
DCurve3 curve = MeshUtil.ExtractLoopV(mesh, loop.Vertices);
foreach (Vector3d v in curve.Vertices)
{
poly.AppendVertex(v.xy);
}
complex.Add(poly);
}
PlanarComplex.SolidRegionInfo solids = complex.FindSolidRegions(0.0, false);
return(solids.Polygons[0]);
}
