static int paint_2d_torus_split_region(ImagePaintRegion region[4], ImBuf *dbuf, ImBuf *sbuf, short tile) { int destx = region->destx; int desty = region->desty; int srcx = region->srcx; int srcy = region->srcy; int width = region->width; int height = region->height; int origw, origh, w, h, tot = 0; /* convert destination and source coordinates to be within image */ if (tile & PAINT_TILE_X) { destx = destx % dbuf->x; if (destx < 0) destx += dbuf->x; srcx = srcx % sbuf->x; if (srcx < 0) srcx += sbuf->x; } if (tile & PAINT_TILE_Y) { desty = desty % dbuf->y; if (desty < 0) desty += dbuf->y; srcy = srcy % sbuf->y; if (srcy < 0) srcy += sbuf->y; } /* clip width of blending area to destination imbuf, to avoid writing the * same pixel twice */ origw = w = (width > dbuf->x) ? dbuf->x : width; origh = h = (height > dbuf->y) ? dbuf->y : height; /* clip within image */ IMB_rectclip(dbuf, sbuf, &destx, &desty, &srcx, &srcy, &w, &h); paint_2d_set_region(®ion[tot++], destx, desty, srcx, srcy, w, h); /* do 3 other rects if needed */ if ((tile & PAINT_TILE_X) && w < origw) paint_2d_set_region(®ion[tot++], (destx + w) % dbuf->x, desty, (srcx + w) % sbuf->x, srcy, origw - w, h); if ((tile & PAINT_TILE_Y) && h < origh) paint_2d_set_region(®ion[tot++], destx, (desty + h) % dbuf->y, srcx, (srcy + h) % sbuf->y, w, origh - h); if ((tile & PAINT_TILE_X) && (tile & PAINT_TILE_Y) && (w < origw) && (h < origh)) paint_2d_set_region(®ion[tot++], (destx + w) % dbuf->x, (desty + h) % dbuf->y, (srcx + w) % sbuf->x, (srcy + h) % sbuf->y, origw - w, origh - h); return tot; }
static void paint_2d_lift_smear(ImBuf *ibuf, ImBuf *ibufb, int *pos) { ImagePaintRegion region[4]; int a, tot; paint_2d_set_region(region, 0, 0, pos[0], pos[1], ibufb->x, ibufb->y); tot = paint_2d_torus_split_region(region, ibufb, ibuf); for (a = 0; a < tot; a++) IMB_rectblend(ibufb, ibufb, ibuf, NULL, NULL, 0, region[a].destx, region[a].desty, region[a].destx, region[a].desty, region[a].srcx, region[a].srcy, region[a].width, region[a].height, IMB_BLEND_COPY_RGB); }
static int paint_2d_op(void *state, ImBuf *ibufb, unsigned short *maskb, const float lastpos[2], const float pos[2]) { ImagePaintState *s = ((ImagePaintState *)state); ImBuf *clonebuf = NULL, *frombuf, *tmpbuf = NULL; ImagePaintRegion region[4]; short torus = s->brush->flag & BRUSH_TORUS; short blend = s->blend; float *offset = s->brush->clone.offset; float liftpos[2]; float brush_alpha = BKE_brush_alpha_get(s->scene, s->brush); unsigned short mask_max = (unsigned short)(brush_alpha * 65535.0f); int bpos[2], blastpos[2], bliftpos[2]; int a, tot; paint_2d_convert_brushco(ibufb, pos, bpos); /* lift from canvas */ if (s->tool == PAINT_TOOL_SOFTEN) { paint_2d_lift_soften(s->canvas, ibufb, bpos, torus); } else if (s->tool == PAINT_TOOL_SMEAR) { if (lastpos[0] == pos[0] && lastpos[1] == pos[1]) return 0; paint_2d_convert_brushco(ibufb, lastpos, blastpos); paint_2d_lift_smear(s->canvas, ibufb, blastpos); } else if (s->tool == PAINT_TOOL_CLONE && s->clonecanvas) { liftpos[0] = pos[0] - offset[0] * s->canvas->x; liftpos[1] = pos[1] - offset[1] * s->canvas->y; paint_2d_convert_brushco(ibufb, liftpos, bliftpos); clonebuf = paint_2d_lift_clone(s->clonecanvas, ibufb, bliftpos); } frombuf = (clonebuf) ? clonebuf : ibufb; if (torus) { paint_2d_set_region(region, bpos[0], bpos[1], 0, 0, frombuf->x, frombuf->y); tot = paint_2d_torus_split_region(region, s->canvas, frombuf); } else { paint_2d_set_region(region, bpos[0], bpos[1], 0, 0, frombuf->x, frombuf->y); tot = 1; } if (s->do_masking) tmpbuf = IMB_allocImBuf(IMAPAINT_TILE_SIZE, IMAPAINT_TILE_SIZE, 32, 0); /* blend into canvas */ for (a = 0; a < tot; a++) { ED_imapaint_dirty_region(s->image, s->canvas, region[a].destx, region[a].desty, region[a].width, region[a].height); if (s->do_masking) { /* masking, find original pixels tiles from undo buffer to composite over */ int tilex, tiley, tilew, tileh, tx, ty; imapaint_region_tiles(s->canvas, region[a].destx, region[a].desty, region[a].width, region[a].height, &tilex, &tiley, &tilew, &tileh); for (ty = tiley; ty <= tileh; ty++) { for (tx = tilex; tx <= tilew; tx++) { /* retrieve original pixels + mask from undo buffer */ unsigned short *mask; int origx = region[a].destx - tx * IMAPAINT_TILE_SIZE; int origy = region[a].desty - ty * IMAPAINT_TILE_SIZE; if (s->canvas->rect_float) tmpbuf->rect_float = image_undo_find_tile(s->image, s->canvas, tx, ty, &mask); else tmpbuf->rect = image_undo_find_tile(s->image, s->canvas, tx, ty, &mask); IMB_rectblend(s->canvas, tmpbuf, frombuf, mask, maskb, mask_max, region[a].destx, region[a].desty, origx, origy, region[a].srcx, region[a].srcy, region[a].width, region[a].height, blend); } } } else { /* no masking, composite brush directly onto canvas */ IMB_rectblend(s->canvas, s->canvas, frombuf, NULL, NULL, 0, region[a].destx, region[a].desty, region[a].destx, region[a].desty, region[a].srcx, region[a].srcy, region[a].width, region[a].height, blend); } } if (clonebuf) IMB_freeImBuf(clonebuf); if (tmpbuf) IMB_freeImBuf(tmpbuf); return 1; }