程式語言 - Simple DirectMedia Layer (SDL) - v1.2 - C/C++ - GFX - Draw Line

參考資訊：
https://www.libsdl.org/release/SDL-1.2.15/docs/html/index.html
https://www.cs.cmu.edu/afs/cs/user/meogata/Scramble/W%20i%20i/SDL_gfx/Docs/

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);
    lineRGBA(screen, 10, 10, 50, 50, 0xff, 0xff, 0x00, 0xff);
    aalineRGBA(screen, 20, 70, 200, 70, 0x00, 0xff, 0xff, 0xff);
    hlineRGBA(screen, 100, 200, 100, 0x00, 0xff, 0x00, 0xff);
    vlineRGBA(screen, 100, 200, 100, 0xff, 0x00, 0x00, 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