diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_geom.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_geom.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/source/blender/blenlib/intern/math_geom.c b/source/blender/blenlib/intern/math_geom.c index 508de506ae8..de50ae27b94 100644 --- a/source/blender/blenlib/intern/math_geom.c +++ b/source/blender/blenlib/intern/math_geom.c @@ -3344,6 +3344,13 @@ float closest_to_ray_v3(float r_close[3], const float ray_dir[3]) { float h[3], lambda; + + if (UNLIKELY(is_zero_v3(ray_dir))) { + lambda = 0.0f; + copy_v3_v3(r_close, ray_orig); + return lambda; + } + sub_v3_v3v3(h, p, ray_orig); lambda = dot_v3v3(ray_dir, h) / dot_v3v3(ray_dir, ray_dir); madd_v3_v3v3fl(r_close, ray_orig, ray_dir, lambda); @@ -4467,7 +4474,7 @@ void interp_weights_poly_v2(float *w, float v[][2], const int n, const float co[ d_curr = d_next; DIR_V2_SET(&d_next, v_next, co); ht = mean_value_half_tan_v2_db(&d_curr, &d_next); - w[i_curr] = (float)((ht_prev + ht) / d_curr.len); + w[i_curr] = (d_curr.len == 0.0) ? 0.0f : (float)((ht_prev + ht) / d_curr.len); totweight += w[i_curr]; /* step */ @@ -4904,8 +4911,8 @@ void window_translate_m4(float winmat[4][4], float perspmat[4][4], const float x void planes_from_projmat(const float mat[4][4], float left[4], float right[4], - float top[4], float bottom[4], + float top[4], float near[4], float far[4]) { @@ -6211,6 +6218,19 @@ bool is_quad_flip_v3_first_third_fast(const float v1[3], return dot_v3v3(cross_a, cross_b) > 0.0f; } +bool is_quad_flip_v3_first_third_fast_with_normal(const float v1[3], + const float v2[3], + const float v3[3], + const float v4[3], + const float normal[3]) +{ + float dir_v3v1[3], tangent[3]; + sub_v3_v3v3(dir_v3v1, v3, v1); + cross_v3_v3v3(tangent, dir_v3v1, normal); + const float dot = dot_v3v3(v1, tangent); + return (dot_v3v3(v4, tangent) >= dot) || (dot_v3v3(v2, tangent) <= dot); +} + /** * Return the value which the distance between points will need to be scaled by, * to define a handle, given both points are on a perfect circle. @@ -6229,7 +6249,7 @@ float cubic_tangent_factor_circle_v3(const float tan_l[3], const float tan_r[3]) const float tan_dot = dot_v3v3(tan_l, tan_r); if (tan_dot > 1.0f - eps) { - /* no angle difference (use fallback, length wont make any difference) */ + /* no angle difference (use fallback, length won't make any difference) */ return (1.0f / 3.0f) * 0.75f; } if (tan_dot < -1.0f + eps) { |