Fixes.

18f28755 · Ilya Portnov · fe2e8b56 · 18f28755
--- a/utils/voronoi3d.py
+++ b/utils/voronoi3d.py
@@ -186,7 +186,7 @@ def voronoi_on_mesh(verts, faces, sites, thickness, clip_inner=True, clip_outer=
            do_clip = do_clip, clipping = clipping,
            make_regions = make_regions)

-def project_solid_normals(shell, pts, thickness, add_plus=True, add_minus=True):
+def project_solid_normals(shell, pts, thickness, add_plus=True, add_minus=True, predicate_plus=None, predicate_minus=None):
    k = 0.5*thickness
    result = []
    for pt in pts:
@@ -200,15 +200,18 @@ def project_solid_normals(shell, pts, thickness, add_plus=True, add_minus=True):
            plus_pt = projection + k*normal
            minus_pt = projection - k*normal
            if add_plus:
-                result.append(tuple(plus_pt))
+                if predicate_plus is None or predicate_plus(plus_pt):
+                    result.append(tuple(plus_pt))
            if add_minus:
-                result.append(tuple(minus_pt))
+                if predicate_minus is None or predicate_minus(minus_pt):
+                    result.append(tuple(minus_pt))
    return result

 def voronoi_on_solid_surface(solid, sites, thickness,
        clip_inner=True, clip_outer=True,
        skip_added = True,
        do_clip=True, clipping=1.0,
+        tolerance = 1e-4,
        make_regions=True): 

    npoints = len(sites)
@@ -217,10 +220,13 @@ def voronoi_on_solid_surface(solid, sites, thickness,
    else:
        shell = Part.Shell(solid.Faces)

+    def check(pt):
+        return solid.isInside(pt, tolerance, False)
+
    all_points = sites
    if clip_inner or clip_outer:
        all_points.extend(project_solid_normals(shell, sites, thickness,
-                add_plus=clip_outer, add_minus=clip_inner))
+                add_plus=clip_outer, add_minus=clip_inner, predicate_minus=check))

    return voronoi3d_layer(npoints, all_points,
            make_regions = make_regions,