Commit: 9eb191083ac79121a19ebc970575b10437f669f1
Author: Campbell Barton
Date: Sat Apr 25 20:47:19 2015 +1000
Branches: master
https://developer.blender.org/rB9eb191083ac79121a19ebc970575b10437f669f1
Fix neg-scaled project-paint in perspective mode
===================================================================
M source/blender/editors/sculpt_paint/paint_image_proj.c
===================================================================
diff --git a/source/blender/editors/sculpt_paint/paint_image_proj.c
b/source/blender/editors/sculpt_paint/paint_image_proj.c
index d75b3f8..3ceaaff 100644
--- a/source/blender/editors/sculpt_paint/paint_image_proj.c
+++ b/source/blender/editors/sculpt_paint/paint_image_proj.c
@@ -1403,6 +1403,9 @@ static float project_paint_uvpixel_mask(
viewDirPersp[1] = (ps->viewPos[1] - (w[0] * co1[1] +
w[1] * co2[1] + w[2] * co3[1]));
viewDirPersp[2] = (ps->viewPos[2] - (w[0] * co1[2] +
w[1] * co2[2] + w[2] * co3[2]));
normalize_v3(viewDirPersp);
+ if (UNLIKELY(ps->is_flip_object)) {
+ negate_v3(viewDirPersp);
+ }
angle_cos = dot_v3v3(viewDirPersp, no);
}
@@ -3384,6 +3387,9 @@ static void
proj_paint_state_vert_flags_init(ProjPaintState *ps)
else {
sub_v3_v3v3(viewDirPersp, ps->viewPos, mv->co);
normalize_v3(viewDirPersp);
+ if (UNLIKELY(ps->is_flip_object)) {
+ negate_v3(viewDirPersp);
+ }
if (dot_v3v3(viewDirPersp, no) <=
ps->normal_angle__cos) { /* 1 vert of this face is towards us */
ps->vertFlags[a] |= PROJ_VERT_CULL;
}
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