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# parastretch.h

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    00001 /*
    00002     parastretch - image stretching functions
    00003     Copyright (C) 2000  Alexander Pipelka
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00018
    00019     Alexander Pipelka
    00020     pipelka@teleweb.at
    00021
    00022     Last Update:      $Author: pipelka $
    00023     Update Date:      $Date: 2001/01/31 17:23:15 $
    00024     Source File:      $Source: /usr/local/CVSROOT/linux/paragui/doc/html/parastretch_h-source.html,v $
    00025     CVS/RCS Revision: $Revision: 1.34 $
    00026     Status:           $State: Exp $
    00027 */
    00028
    00029 #ifndef PARASTRETCH_H
    00030 #define PARASTRETCH_H
    00031
    00032 #include "SDL.h"
    00033
    00034 #define sign(x) ((x)>0 ? 1:-1)
    00035
    00036 void CreateFilterLUT();
    00037 void RectStretch(SDL_Surface* src_surface, int xs1, int ys1, int xs2, int ys2, SDL_Surface* dst_surface, int xd1, int yd1, int xd2, int yd2, Uint32* voiLUT);
    00038 //void Stretch(SDL_Surface* src_surface, SDL_Surface* dst_surface, long x1,long x2,long y1,long y2,long yr,long yw);
    00039 SDL_Surface* SDLCopyRect(SDL_Surface* s, int x, int y, int w, int h);
    00040 void SDLSmoothFast(SDL_Surface* src, SDL_Surface* dst);
    00041 void InterpolatePixel(SDL_Surface* src, SDL_Surface* dest);
    00042
    00043 void SDL_FillRectEx(SDL_Surface *dst, Uint16 x0, Uint16 y0, Uint16 x1, Uint16 y1, Uint32 color);
    00044
    00045 #ifndef M_PI
    00046 #define M_PI      3.14159265358979323846
    00047 #endif
    00048
    00049 #endif // PARASTRETCH_H