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