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Use reflect for calculating second normal

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This commit is contained in:
Campbell Barton
2017-04-20 18:08:05 +10:00
parent 9bb8e46460
commit 6da53e46c9
1 changed files with 5 additions and 8 deletions
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13
source/blender/editors/space_view3d/drawobject.c
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@@ -6419,19 +6419,16 @@ static void draw_editnurb(
vec_a[0] = fac;
vec_a[1] = 0.0f;
vec_a[2] = 0.0f;
vec_b[0] = -fac;
vec_b[1] = 0.0f;
vec_b[2] = 0.0f;
mul_qt_v3(bevp->quat, vec_a);
mul_qt_v3(bevp->quat, vec_b);
madd_v3_v3fl(vec_a, bevp->dir, -fac);
reflect_v3_v3v3(vec_b, vec_a, bevp->dir);
negate_v3(vec_b);
add_v3_v3(vec_a, bevp->vec);
add_v3_v3(vec_b, bevp->vec);
madd_v3_v3fl(vec_a, bevp->dir, -fac);
madd_v3_v3fl(vec_b, bevp->dir, -fac);
glBegin(GL_LINE_STRIP);
glVertex3fv(vec_a);
glVertex3fv(bevp->vec);