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/**
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* rotate.c
*
* $Id$
*/
#include "BLI_blenlib.h"
#include "BKE_utildefines.h"
#include "imbuf.h"
#include "imbuf_patch.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_allocimbuf.h"
void IMB_flipy(struct ImBuf * ibuf)
{
int x, y;
if (ibuf == NULL) return;
if (ibuf->rect) {
unsigned int *top, *bottom, *line;
x = ibuf->x;
y = ibuf->y;
top = ibuf->rect;
bottom = top + ((y-1) * x);
line= MEM_mallocN(x*sizeof(int), "linebuf");
y >>= 1;
for(;y>0;y--) {
memcpy(line, top, x*sizeof(int));
memcpy(top, bottom, x*sizeof(int));
memcpy(bottom, line, x*sizeof(int));
bottom -= x;
top+= x;
}
MEM_freeN(line);
}
if (ibuf->rect_float) {
float *topf=NULL, *bottomf=NULL, *linef=NULL;
x = ibuf->x;
y = ibuf->y;
topf= ibuf->rect_float;
bottomf = topf + 4*((y-1) * x);
linef= MEM_mallocN(4*x*sizeof(float), "linebuff");
y >>= 1;
for(;y>0;y--) {
memcpy(linef, topf, 4*x*sizeof(float));
memcpy(topf, bottomf, 4*x*sizeof(float));
memcpy(bottomf, linef, 4*x*sizeof(float));
bottomf -= 4*x;
topf+= 4*x;
}
MEM_freeN(linef);
}
}
void IMB_flipx(struct ImBuf * ibuf)
{
short x, y, xr, xl, yi;
float px_f[4];
if (ibuf == NULL) return;
x = ibuf->x;
y = ibuf->y;
if (ibuf->rect) {
for(yi=y-1;yi>=0;yi--) {
for(xr=x-1, xl=0; xr>=xl; xr--, xl++) {
SWAP(unsigned int, ibuf->rect[(x*yi)+xr], ibuf->rect[(x*yi)+xl]);
}
}
}
if (ibuf->rect_float) {
for(yi=y-1;yi>=0;yi--) {
for(xr=x-1, xl=0; xr>=xl; xr--, xl++) {
memcpy(&px_f, &ibuf->rect_float[((x*yi)+xr)*4], 4*sizeof(float));
memcpy(&ibuf->rect_float[((x*yi)+xr)*4], &ibuf->rect_float[((x*yi)+xl)*4], 4*sizeof(float));
memcpy(&ibuf->rect_float[((x*yi)+xl)*4], &px_f, 4*sizeof(float));
}
}
}
}
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