canvas.h

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#ifndef _CANVAS_H
#define _CANVAS_H
 
#define DRAW_HWINTER    1   // 1=use hardware interpolator to draw images
 
// canvas format
//   Note: do not use enum, symbols could not be used by the preprocessor
#define CANVAS_8    0   
#define CANVAS_4    1   
#define CANVAS_2    2   
#define CANVAS_1    3   // 1-bit pixels
#define CANVAS_PLANE2   4   
#define CANVAS_ATTRIB8  5   
 
typedef struct {
    u8* img;        
    u8* img2;       
    int w;          
    int h;          
    int wb;         
    u8  format;     
} sCanvas;
 
void DrawRect(sCanvas* canvas, int x, int y, int w, int h, u8 col);
 
void DrawFrame(sCanvas* canvas, int x, int y, int w, int h, u8 col);
 
void DrawClear(sCanvas* canvas);
 
void DrawPoint(sCanvas* canvas, int x, int y, u8 col);
 
void DrawLine(sCanvas* canvas, int x1, int y1, int x2, int y2, u8 col);
 
void DrawFillCircle(sCanvas* canvas, int x0, int y0, int r, u8 col, u8 mask=0xff);
 
void DrawCircle(sCanvas* canvas, int x0, int y0, int r, u8 col, u8 mask=0xff);
 
void DrawText(sCanvas* canvas, const char* text, int x, int y, u8 col,
    const void* font, int fontheight=8, int scalex=1, int scaley=1);
 
void DrawTextBg(sCanvas* canvas, const char* text, int x, int y, u8 col, u8 bgcol,
    const void* font, int fontheight=8, int scalex=1, int scaley=1);
 
void DrawImg(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int w, int h);
 
void DrawBlit(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int w, int h, u8 col);
 
enum {
    DRAWIMG_WRAP,       
    DRAWIMG_NOBORDER,   
    DRAWIMG_CLAMP,      
    DRAWING_COLOR,      
    DRAWIMG_TRANSP,     
    DRAWIMG_PERSP,      
};
 
void DrawImgMat(sCanvas* canvas, const sCanvas* src, int x, int y, int w, int h,
    const class cMat2Df* m, u8 mode, u8 color);
 
void DrawTileMap(sCanvas* canvas, const sCanvas* src, const u8* map, int mapwbits, int maphbits,
    int tilebits, int x, int y, int w, int h, const cMat2Df* mat, u8 horizon);
 
void DrawImgLine(sCanvas* canvas, sCanvas* src, int xd, int yd, int xs, int ys, int wd, int ws);
 
 
#endif // _CANVAS_H