diff options
Diffstat (limited to 'source/blender/blenkernel/intern/paint.c')
| -rw-r--r-- | source/blender/blenkernel/intern/paint.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c index 2b3f792f777..fe4fdb58951 100644 --- a/source/blender/blenkernel/intern/paint.c +++ b/source/blender/blenkernel/intern/paint.c @@ -33,15 +33,17 @@ #include "DNA_object_types.h" #include "DNA_mesh_types.h" +#include "DNA_meshdata_types.h" #include "DNA_scene_types.h" #include "DNA_brush_types.h" +#include "BLI_bitmap.h" #include "BLI_utildefines.h" - #include "BKE_brush.h" #include "BKE_library.h" #include "BKE_paint.h" +#include "BKE_subsurf.h" #include <stdlib.h> #include <string.h> @@ -147,3 +149,26 @@ void copy_paint(Paint *src, Paint *tar) tar->brush= src->brush; id_us_plus((ID *)tar->brush); } + +/* returns non-zero if any of the face's vertices + are hidden, zero otherwise */ +int paint_is_face_hidden(const MFace *f, const MVert *mvert) +{ + return ((mvert[f->v1].flag & ME_HIDE) || + (mvert[f->v2].flag & ME_HIDE) || + (mvert[f->v3].flag & ME_HIDE) || + (f->v4 && (mvert[f->v4].flag & ME_HIDE))); +} + +/* returns non-zero if any of the corners of the grid + face whose inner corner is at (x,y) are hidden, + zero otherwise */ +int paint_is_grid_face_hidden(const unsigned int *grid_hidden, + int gridsize, int x, int y) +{ + /* skip face if any of its corners are hidden */ + return (BLI_BITMAP_GET(grid_hidden, y * gridsize + x) || + BLI_BITMAP_GET(grid_hidden, y * gridsize + x+1) || + BLI_BITMAP_GET(grid_hidden, (y+1) * gridsize + x+1) || + BLI_BITMAP_GET(grid_hidden, (y+1) * gridsize + x)); +} |