128 lines
2.8 KiB
C
128 lines
2.8 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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* rotate.c
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*
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*/
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/** \file blender/imbuf/intern/rotate.c
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* \ingroup imbuf
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*/
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#include "BLI_blenlib.h"
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#include "BLI_utildefines.h"
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#include "MEM_guardedalloc.h"
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#include "imbuf.h"
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#include "IMB_imbuf_types.h"
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#include "IMB_imbuf.h"
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#include "IMB_allocimbuf.h"
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void IMB_flipy(struct ImBuf * ibuf)
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{
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int x, y;
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if (ibuf == NULL) return;
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if (ibuf->rect) {
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unsigned int *top, *bottom, *line;
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x = ibuf->x;
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y = ibuf->y;
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top = ibuf->rect;
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bottom = top + ((y-1) * x);
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line= MEM_mallocN(x*sizeof(int), "linebuf");
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y >>= 1;
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for(;y>0;y--) {
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memcpy(line, top, x*sizeof(int));
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memcpy(top, bottom, x*sizeof(int));
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memcpy(bottom, line, x*sizeof(int));
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bottom -= x;
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top+= x;
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}
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MEM_freeN(line);
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}
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if (ibuf->rect_float) {
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float *topf=NULL, *bottomf=NULL, *linef=NULL;
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x = ibuf->x;
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y = ibuf->y;
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topf= ibuf->rect_float;
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bottomf = topf + 4*((y-1) * x);
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linef= MEM_mallocN(4*x*sizeof(float), "linebuff");
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y >>= 1;
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for(;y>0;y--) {
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memcpy(linef, topf, 4*x*sizeof(float));
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memcpy(topf, bottomf, 4*x*sizeof(float));
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memcpy(bottomf, linef, 4*x*sizeof(float));
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bottomf -= 4*x;
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topf+= 4*x;
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}
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MEM_freeN(linef);
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}
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}
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void IMB_flipx(struct ImBuf * ibuf)
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{
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int x, y, xr, xl, yi;
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float px_f[4];
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if (ibuf == NULL) return;
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x = ibuf->x;
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y = ibuf->y;
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if (ibuf->rect) {
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for(yi=y-1;yi>=0;yi--) {
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for(xr=x-1, xl=0; xr>=xl; xr--, xl++) {
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SWAP(unsigned int, ibuf->rect[(x*yi)+xr], ibuf->rect[(x*yi)+xl]);
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}
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}
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}
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if (ibuf->rect_float) {
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for(yi=y-1;yi>=0;yi--) {
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for(xr=x-1, xl=0; xr>=xl; xr--, xl++) {
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memcpy(&px_f, &ibuf->rect_float[((x*yi)+xr)*4], 4*sizeof(float));
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memcpy(&ibuf->rect_float[((x*yi)+xr)*4], &ibuf->rect_float[((x*yi)+xl)*4], 4*sizeof(float));
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memcpy(&ibuf->rect_float[((x*yi)+xl)*4], &px_f, 4*sizeof(float));
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}
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}
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}
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}
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