SDL v1.2 >> C/C++
Circle
int circleColor(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 r, Uint32 color); int circleRGBA(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a); int aacircleColor(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 r, Uint32 color); int aacircleRGBA(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a); int filledCircleColor(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 r, Uint32 color); int filledCircleRGBA(SDL_Surface * dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
main.c
#include <stdio.h> #include <stdlib.h> #include <SDL.h> #include <SDL_gfxPrimitives.h> int main(int argc, char **argv) { SDL_Surface *screen = NULL; SDL_Init(SDL_INIT_VIDEO); screen = SDL_SetVideoMode(320, 240, 16, SDL_HWSURFACE); circleRGBA(screen, 50, 100, 20, 0xff, 0x00, 0x00, 0xff); aacircleRGBA(screen, 100, 100, 20, 0x00, 0xff, 0x00, 0xff); filledCircleRGBA(screen, 150, 100, 20, 0x00, 0x00, 0xff, 0xff); SDL_Flip(screen); SDL_Delay(3000); SDL_Quit(); return 0; }
編譯、執行
$ gcc main.c -o main -lSDL -lSDL_gfx -I/usr/include/SDL $ ./main