diff options
Diffstat (limited to 'source/blender/blenkernel/intern/brush.c')
| -rw-r--r-- | source/blender/blenkernel/intern/brush.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c index 2f666bf5922..6dcd394c92a 100644 --- a/source/blender/blenkernel/intern/brush.c +++ b/source/blender/blenkernel/intern/brush.c @@ -121,6 +121,12 @@ static void brush_defaults(Brush *brush) brush->sub_col[0] = 0.39; /* subtract mode color is light blue */ brush->sub_col[1] = 0.39; brush->sub_col[2] = 1.00; + + brush->stencil_pos[0] = 256; + brush->stencil_pos[1] = 256; + + brush->stencil_dimension[0] = 256; + brush->stencil_dimension[1] = 256; } /* Datablock add/copy/free/make_local */ @@ -518,11 +524,45 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br, hasrgb = externtex(mtex, point, &intensity, rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool); } + else if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) { + float rotation = -mtex->rot; + float point_2d[2] = {point[0], point[1]}; + float x = 0.0f, y = 0.0f; /* Quite warnings */ + float co[3]; + + x = point_2d[0] - br->stencil_pos[0]; + y = point_2d[1] - br->stencil_pos[1]; + + if (rotation > 0.001f || rotation < -0.001f) { + const float angle = atan2f(y, x) + rotation; + const float flen = sqrtf(x * x + y * y); + + x = flen * cosf(angle); + y = flen * sinf(angle); + } + + if (fabs(x) > br->stencil_dimension[0] || fabs(y) > br->stencil_dimension[1]) { + rgba[0] = rgba[1] = rgba[2] = rgba[3] = 0.0; + return 0.0; + } + x /= (br->stencil_dimension[0]); + y /= (br->stencil_dimension[1]); + + x *= br->mtex.size[0]; + y *= br->mtex.size[1]; + + co[0] = x + br->mtex.ofs[0]; + co[1] = y + br->mtex.ofs[1]; + co[2] = 0.0f; + + hasrgb = externtex(mtex, co, &intensity, + rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool); + } else { float rotation = -mtex->rot; float point_2d[2] = {point[0], point[1]}; float x = 0.0f, y = 0.0f; /* Quite warnings */ - float radius = 1.0f; /* Quite warnings */ + float invradius = 1.0f; /* Quite warnings */ float co[3]; if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) { @@ -534,13 +574,13 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br, y = point_2d[1] - ups->tex_mouse[1]; /* use pressure adjusted size for fixed mode */ - radius = ups->pixel_radius; + invradius = 1.0/ups->pixel_radius; } else if (mtex->brush_map_mode == MTEX_MAP_MODE_TILED) { /* leave the coordinates relative to the screen */ /* use unadjusted size for tiled mode */ - radius = BKE_brush_size_get(scene, br); + invradius = 1.0/BKE_brush_size_get(scene, br); x = point_2d[0]; y = point_2d[1]; @@ -551,11 +591,11 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br, x = point_2d[0] - ups->tex_mouse[0]; y = point_2d[1] - ups->tex_mouse[1]; - radius = ups->pixel_radius; + invradius = 1.0/ups->pixel_radius; } - x /= radius; - y /= radius; + x *= invradius; + y *= invradius; /* it is probably worth optimizing for those cases where * the texture is not rotated by skipping the calls to |