diff options
Diffstat (limited to 'source/blender/blenlib/intern/polyfill_2d.c')
| -rw-r--r-- | source/blender/blenlib/intern/polyfill_2d.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/source/blender/blenlib/intern/polyfill_2d.c b/source/blender/blenlib/intern/polyfill_2d.c index 575a4a06d6a..31b18079c73 100644 --- a/source/blender/blenlib/intern/polyfill_2d.c +++ b/source/blender/blenlib/intern/polyfill_2d.c @@ -193,7 +193,10 @@ BLI_INLINE eSign signum_enum(float a) */ BLI_INLINE float area_tri_signed_v2_alt_2x(const float v1[2], const float v2[2], const float v3[2]) { - return ((v1[0] * (v2[1] - v3[1])) + (v2[0] * (v3[1] - v1[1])) + (v3[0] * (v1[1] - v2[1]))); + float d2[2], d3[2]; + sub_v2_v2v2(d2, v2, v1); + sub_v2_v2v2(d3, v3, v1); + return (d2[0] * d3[1]) - (d3[0] * d2[1]); } static eSign span_tri_v2_sign(const float v1[2], const float v2[2], const float v3[2]) |