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Deduplicate face vertices before triangulation.

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Revar Desmera
2020-03-24 13:33:38 -07:00
parent 07d47f4ffc
commit b0ebc77aba
2 changed files with 40 additions and 39 deletions
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13
triangulation.scad
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@@ -129,10 +129,12 @@ function is_only_noncolinear_vertex(points, facelist, vertex) =
// points = Array of vertices for the polyhedron. // points = Array of vertices for the polyhedron.
// face = The face, given as a list of indices into the vertex array `points`. // face = The face, given as a list of indices into the vertex array `points`.
function triangulate_face(points, face) = function triangulate_face(points, face) =
let(count=len(face)) let(
(3==count)? face = deduplicate(face),
[face] count = len(face)
: )
(count < 3)? [] :
(count == 3)? [face] :
let( let(
facenorm=face_normal(points, face), facenorm=face_normal(points, face),
cv=find_convex_vertex(points, face, facenorm), cv=find_convex_vertex(points, face, facenorm),
@@ -167,8 +169,7 @@ function triangulate_face(points, face) =
flatten([ flatten([
triangulate_face(points, select(face, cv, diagonal_point)), triangulate_face(points, select(face, cv, diagonal_point)),
triangulate_face(points, select(face, diagonal_point, cv)) triangulate_face(points, select(face, diagonal_point, cv))
]) ]);
;
// Function: triangulate_faces() // Function: triangulate_faces()

2
version.scad
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@@ -8,7 +8,7 @@
////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////
BOSL_VERSION = [2,0,220]; BOSL_VERSION = [2,0,221];
// Section: BOSL Library Version Functions // Section: BOSL Library Version Functions