diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_geom.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_geom.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index cd726179f56..74abd7e8c7e 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -1453,9 +1453,16 @@ float line_point_factor_v3(const float p[3], const float l1[3], const float l2[3 float line_point_factor_v2(const float p[2], const float l1[2], const float l2[2]) { float h[2], u[2]; + float dot; sub_v2_v2v2(u, l2, l1); sub_v2_v2v2(h, p, l1); +#if 0 return (dot_v2v2(u, h) / dot_v2v2(u, u)); +#else + /* better check for zero */ + dot = dot_v2v2(u, u); + return (dot != 0.0f) ? (dot_v2v2(u, h) / dot) : 0.0f; +#endif } /* ensure the distance between these points is no greater then 'dist' |