// smooths embedded loop in mesh, by first smoothing edge loop and then
// smoothing vertex neighbourhood
// [TODO] geodesic nbrhoold instead of # of rings
// [TODO] reprojection?
public static void smooth_loop(NGonsCore.geometry3Sharp.mesh.DMesh3 mesh, EdgeLoop loop, int nRings)
{
MeshFaceSelection roi_t = new MeshFaceSelection(mesh);
roi_t.SelectVertexOneRings(loop.Vertices);
for (int i = 0; i < nRings; ++i)
{
roi_t.ExpandToOneRingNeighbours();
}
roi_t.LocalOptimize(true, true);
MeshVertexSelection roi_v = new MeshVertexSelection(mesh);
roi_v.SelectTriangleVertices(roi_t.ToArray());
roi_v.Deselect(loop.Vertices);
MeshLoopSmooth loop_smooth = new MeshLoopSmooth(mesh, loop);
loop_smooth.Rounds = 1;
MeshIterativeSmooth mesh_smooth = new MeshIterativeSmooth(mesh, roi_v.ToArray(), true);
mesh_smooth.Rounds = 1;
for (int i = 0; i < 10; ++i)
{
loop_smooth.Smooth();
mesh_smooth.Smooth();
}
}
// local mesh smooth applied to all vertices in N-rings around input list
public static void smooth_region(NGonsCore.geometry3Sharp.mesh.DMesh3 mesh, IEnumerable <int> vertices, int nRings)
{
MeshFaceSelection roi_t = new MeshFaceSelection(mesh);
roi_t.SelectVertexOneRings(vertices);
for (int i = 0; i < nRings; ++i)
{
roi_t.ExpandToOneRingNeighbours();
}
roi_t.LocalOptimize(true, true);
MeshVertexSelection roi_v = new MeshVertexSelection(mesh);
roi_v.SelectTriangleVertices(roi_t.ToArray());
MeshIterativeSmooth mesh_smooth = new MeshIterativeSmooth(mesh, roi_v.ToArray(), true);
mesh_smooth.Alpha = 0.2f;
mesh_smooth.Rounds = 10;
mesh_smooth.Smooth();
}