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Fix neg-scaled project-paint in perspective mode

This commit is contained in:
Campbell Barton 2015-04-25 20:47:19 +10:00
parent 89f5a09ab4
commit 9eb191083a
1 changed files with 6 additions and 0 deletions
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6
source/blender/editors/sculpt_paint/paint_image_proj.c
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@ -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;
}