DMesh3 compute_partial_hole(Vector3d start, Vector3d end, double tol)
{
DMesh3 origMesh = MeshSource.GetDMeshUnsafe();
DMeshAABBTree3 origSpatial = MeshSource.GetSpatial() as DMeshAABBTree3;
DMesh3 cutMesh = new DMesh3(origMesh);
Polygon2d polygon = Polygon2d.MakeCircle(hole_size / 2, hole_subdivisions);
Vector3f axis = (Vector3f)(start - end).Normalized;
int start_tid = origSpatial.FindNearestTriangle(start);
Frame3f start_frame = origMesh.GetTriFrame(start_tid);
start_frame.Origin = (Vector3f)start;
start_frame.AlignAxis(2, axis);
int end_tid = origSpatial.FindNearestTriangle(end);
//Frame3f end_frame = origMesh.GetTriFrame(end_tid); end_frame.Origin = (Vector3f)end;
Frame3f end_frame = start_frame; end_frame.Origin = (Vector3f)end;
// [TODO] we don't need to Simplify here...is more robust?
MeshInsertProjectedPolygon start_insert = new MeshInsertProjectedPolygon(cutMesh, polygon, start_frame, start_tid);
bool start_ok = start_insert.Insert();
if (start_ok == false)
{
throw new Exception("CutPolygonHoleOp.compute_partial_hole: start or end insertion failed!");
}
EdgeLoop outLoop = start_insert.InsertedLoop;
MeshExtrudeLoop extrude = new MeshExtrudeLoop(cutMesh, outLoop);
extrude.PositionF = (v, n, vid) => {
cutMesh.GetVertex(vid);
return(end_frame.ProjectToPlane((Vector3f)v, 2));
};
extrude.Extrude();
SimpleHoleFiller filler = new SimpleHoleFiller(cutMesh, extrude.NewLoop);
filler.Fill();
return(cutMesh);
}
DMesh3 compute_through_hole(Vector3d start, Vector3d end, double tol)
{
DMesh3 origMesh = MeshSource.GetDMeshUnsafe();
DMeshAABBTree3 origSpatial = MeshSource.GetSpatial() as DMeshAABBTree3;
DMesh3 cutMesh = new DMesh3(origMesh);
Polygon2d polygon = Polygon2d.MakeCircle(hole_size / 2, hole_subdivisions);
Vector3f axis = (Vector3f)(start - end).Normalized;
int start_tid = origSpatial.FindNearestTriangle(start);
Frame3f start_frame = origMesh.GetTriFrame(start_tid);
start_frame.Origin = (Vector3f)start;
start_frame.AlignAxis(2, axis);
int end_tid = origSpatial.FindNearestTriangle(end);
//Frame3f end_frame = origMesh.GetTriFrame(end_tid); end_frame.Origin = (Vector3f)end;
Frame3f end_frame = start_frame; end_frame.Origin = (Vector3f)end;
MeshInsertProjectedPolygon start_insert = new MeshInsertProjectedPolygon(cutMesh, polygon, start_frame, start_tid);
bool start_ok = start_insert.Insert();
MeshInsertProjectedPolygon end_insert = new MeshInsertProjectedPolygon(cutMesh, polygon, end_frame, end_tid);
bool end_ok = end_insert.Insert();
if (start_ok == false || end_ok == false)
{
throw new Exception("CutPolygonHoleOp.compute_through_hole: start or end insertion failed!");
}
MeshEditor editor = new MeshEditor(cutMesh);
EdgeLoop l0 = start_insert.InsertedLoop;
EdgeLoop l1 = end_insert.InsertedLoop;
l1.Reverse();
editor.StitchLoop(l0.Vertices, l1.Vertices);
return(cutMesh);
}
