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/**
*
* ***** BEGIN GPL/BL DUAL 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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/BL DUAL LICENSE BLOCK *****
* rotate.c
*
* $Id$
*/
#ifdef WIN32
#include "BLI_winstuff.h"
#endif
#include "BLI_blenlib.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)
{
short x,y,backx;
unsigned int *top,*bottom,temp;
if (ibuf == 0) return;
if (ibuf->rect == 0) return;
x = ibuf->x;
y = ibuf->y;
backx = x<<1;
top = ibuf->rect;
bottom = top + ((y-1) * x);
y >>= 1;
for(;y>0;y--){
for(x = ibuf->x; x > 0; x--){
temp = *top;
*(top++) = *bottom;
*(bottom++) = temp;
}
bottom -= backx;
}
}
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