diff options
Diffstat (limited to 'source/blender/editors/uvedit')
| -rw-r--r-- | source/blender/editors/uvedit/uvedit_parametrizer.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/editors/uvedit/uvedit_parametrizer.c b/source/blender/editors/uvedit/uvedit_parametrizer.c index 2161d4989db..72c38be5398 100644 --- a/source/blender/editors/uvedit/uvedit_parametrizer.c +++ b/source/blender/editors/uvedit/uvedit_parametrizer.c @@ -1135,7 +1135,11 @@ static PFace *p_face_add_fill(PChart *chart, PVert *v1, PVert *v2, PVert *v3) static PBool p_quad_split_direction(PHandle *handle, float **co, PHashKey *vkeys) { - float fac = len_v3v3(co[0], co[2]) - len_v3v3(co[1], co[3]); + /* slight bias to prefer one edge over the other in case they are equal, so + * that in symmetric models we choose the same split direction instead of + * depending on floating point errors to decide */ + float bias = 1.0f + 1e-6f; + float fac = len_v3v3(co[0], co[2])*bias - len_v3v3(co[1], co[3]); PBool dir = (fac <= 0.0f); /* the face exists check is there because of a special case: when |