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Merge branch 'master' into blender2.8

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This commit is contained in:
Campbell Barton
2018-02-08 23:48:36 +11:00
parent 022a481789 f088c6b9f6
commit c3e61cab8a
5 changed files with 66 additions and 28 deletions
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12
source/blender/blenlib/intern/math_geom.c
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@@ -4903,6 +4903,18 @@ int is_quad_flip_v3(const float v1[3], const float v2[3], const float v3[3], con
return ret;
}
bool is_quad_flip_v3_first_third_fast(const float v1[3], const float v2[3], const float v3[3], const float v4[3])
{
float d_12[3], d_13[3], d_14[3];
float cross_a[3], cross_b[3];
sub_v3_v3v3(d_12, v2, v1);
sub_v3_v3v3(d_13, v3, v1);
sub_v3_v3v3(d_14, v4, v1);
cross_v3_v3v3(cross_a, d_12, d_13);
cross_v3_v3v3(cross_b, d_14, d_13);
return dot_v3v3(cross_a, cross_b) > 0.0f;
}
/**
* 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.