Drawing a triangle using SDL2

Data de publicació: Mar 16, 2018 7:12:14 PM

#include <SDL2/SDL.h>

int main(int argc, char* argv[])

{

    if (SDL_Init(SDL_INIT_VIDEO) == 0) {

        SDL_Window* window = NULL;

        SDL_Renderer* renderer = NULL;

        if (SDL_CreateWindowAndRenderer(640, 480, 0, &window, &renderer) == 0) {

            SDL_bool done = SDL_FALSE;

            while (!done) {

                SDL_Event event;

                SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);

                SDL_RenderClear(renderer);

                SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);

                SDL_RenderDrawLine(renderer, 320, 200, 300, 240);

                SDL_RenderDrawLine(renderer, 300, 240, 340, 240);

                SDL_RenderDrawLine(renderer, 340, 240, 320, 200);

                SDL_RenderPresent(renderer);

                while (SDL_PollEvent(&event)) {

                    if (event.type == SDL_QUIT) {

                        done = SDL_TRUE;

                    }

                }

            }

        }

        if (renderer) {

            SDL_DestroyRenderer(renderer);

        }

        if (window) {

            SDL_DestroyWindow(window);

        }

    }

    SDL_Quit();

    return 0;

}

gcc prova_sdl_line.c -lSDL2 -lSDL2main  -o prova_sdl_line