text: #ifndef GRAPHICSUTIL_H
  #define GRAPHICSUTIL_H
  
  #include "SDL.h"
  
  struct colourTransform
  {
      Uint32 colour;
  };
  
  
  void setRect(SDL_Rect& _r, int x, int y, int w, int h);
  
  unsigned int endian_swap(unsigned int x);
  
  SDL_Surface* GetSubSurface( SDL_Surface* metaSurface, int x, int y, int width, int height );
  
  void DrawPixel( SDL_Surface *surface, int x, int y, Uint32 pixel );
  
  Uint32 ReadPixel( SDL_Surface *surface, int x, int y );
  
  SDL_Surface * ScaleSurface( SDL_Surface *Surface, int Width, int Height, SDL_Surface * Dest = NULL );
  
  void BlitSurfaceStandard( SDL_Surface* _src, SDL_Rect* _srcRect, SDL_Surface* _dest, SDL_Rect* _destRect );
  
  void BlitSurfaceColoured( SDL_Surface* _src, SDL_Rect* _srcRect, SDL_Surface* _dest, SDL_Rect* _destRect, colourTransform& ct );
  
  void FillRect( SDL_Surface* surface, const int x, const int y, const int w, const int h, const int r, int g, int b );
  
  void FillRect( SDL_Surface* surface, const int r, int g, int b );
  
  void FillRect( SDL_Surface* surface, const int color );
  
  void FillRect( SDL_Surface* surface, const int x, const int y, const int w, const int h, int rgba );
  
  void FillRect( SDL_Surface* surface, SDL_Rect& rect, const int r, int g, int b );
  
  void FillRect( SDL_Surface* surface, SDL_Rect rect, int rgba );
  
  bool intersectRect(float left1, float right1, float bottom1, float top1, float left2, float right2, float bottom2, float top2);
  
  void OverlaySurfaceKeyed(SDL_Surface* _src, SDL_Surface* _dest, Uint32 _key);
  
  void ScrollSurface(SDL_Surface* _src, int pX, int py);
  
  SDL_Surface * FlipSurfaceHorizontal(SDL_Surface* _src);
  SDL_Surface * FlipSurfaceVerticle(SDL_Surface* _src);
  SDL_Surface * ScaleSurfaceSlow( SDL_Surface *_surface, int Width, int Height );
  SDL_Surface* ApplyFilter( SDL_Surface* _src );
  
  #endif /* GRAPHICSUTIL_H */
  