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Diffstat (limited to 'source/blender/editors/gpencil/gpencil_trace.h')
| -rw-r--r-- | source/blender/editors/gpencil/gpencil_trace.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/source/blender/editors/gpencil/gpencil_trace.h b/source/blender/editors/gpencil/gpencil_trace.h new file mode 100644 index 00000000000..85eb4e0609f --- /dev/null +++ b/source/blender/editors/gpencil/gpencil_trace.h @@ -0,0 +1,83 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2020 Blender Foundation. + * All rights reserved. + */ + +/** \file + * \ingroup edgpencil + */ + +#ifndef __GPENCIL_TRACE_H__ +#define __GPENCIL_TRACE_H__ + +/* internal exports only */ +struct FILE; +struct ImBuf; +struct Main; +struct Object; +struct bGPDframe; + +#include "potracelib.h" + +/* Potrace macros for writing individual bitmap pixels. */ +#define BM_WORDSIZE ((int)sizeof(potrace_word)) +#define BM_WORDBITS (8 * BM_WORDSIZE) +#define BM_HIBIT (((potrace_word)1) << (BM_WORDBITS - 1)) +#define BM_ALLBITS (~(potrace_word)0) + +#define bm_scanline(bm, y) ((bm)->map + (y) * (bm)->dy) +#define bm_index(bm, x, y) (&bm_scanline(bm, y)[(x) / BM_WORDBITS]) +#define bm_mask(x) (BM_HIBIT >> ((x) & (BM_WORDBITS - 1))) +#define bm_range(x, a) ((int)(x) >= 0 && (int)(x) < (a)) +#define bm_safe(bm, x, y) (bm_range(x, (bm)->w) && bm_range(y, (bm)->h)) + +#define BM_UGET(bm, x, y) ((*bm_index(bm, x, y) & bm_mask(x)) != 0) +#define BM_USET(bm, x, y) (*bm_index(bm, x, y) |= bm_mask(x)) +#define BM_UCLR(bm, x, y) (*bm_index(bm, x, y) &= ~bm_mask(x)) +#define BM_UINV(bm, x, y) (*bm_index(bm, x, y) ^= bm_mask(x)) +#define BM_UPUT(bm, x, y, b) ((b) ? BM_USET(bm, x, y) : BM_UCLR(bm, x, y)) +#define BM_GET(bm, x, y) (bm_safe(bm, x, y) ? BM_UGET(bm, x, y) : 0) +#define BM_SET(bm, x, y) (bm_safe(bm, x, y) ? BM_USET(bm, x, y) : 0) +#define BM_CLR(bm, x, y) (bm_safe(bm, x, y) ? BM_UCLR(bm, x, y) : 0) +#define BM_INV(bm, x, y) (bm_safe(bm, x, y) ? BM_UINV(bm, x, y) : 0) +#define BM_PUT(bm, x, y, b) (bm_safe(bm, x, y) ? BM_UPUT(bm, x, y, b) : 0) + +/* Trace modes */ +#define GPENCIL_TRACE_MODE_SINGLE 0 +#define GPENCIL_TRACE_MODE_SEQUENCE 1 + +void ED_gpencil_trace_bitmap_print(FILE *f, const potrace_bitmap_t *bm); + +potrace_bitmap_t *ED_gpencil_trace_bitmap_new(int32_t w, int32_t h); +void ED_gpencil_trace_bitmap_free(const potrace_bitmap_t *bm); +void ED_gpencil_trace_bitmap_invert(const potrace_bitmap_t *bm); + +void ED_gpencil_trace_image_to_bitmap(struct ImBuf *ibuf, + const potrace_bitmap_t *bm, + const float threshold); + +void ED_gpencil_trace_data_to_strokes(struct Main *bmain, + potrace_state_t *st, + struct Object *ob, + struct bGPDframe *gpf, + int32_t offset[2], + const float scale, + const float sample, + const int32_t resolution, + const int32_t thickness); + +#endif /* __GPENCIL_TRACE_H__ */ |