sdl2.c

#include <SDL2/SDL_log.h>
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_timer.h>

#include <SDL2/SDL_image.h>

#include <SDL2/SDL_video.h>
#include <complex.h>
#include <math.h>
#include <stdio.h>
#include <SDL2/SDL.h>

int h, w;

#define WINDOW_WIDTH 640
#define WINDOW_HEIGHT 360
#define WINDOW_XPOS 0
#define WINDOW_YPOS 0

int completedCircle = 0, radAngle, angle, xc, yc;
SDL_Event event;
SDL_Texture* texture = NULL;
SDL_Window* window = NULL;
SDL_Renderer* basic_renderer = NULL;
void drawCircle(int x, int y, int radius) {

    if (!completedCircle) {
        angle += 1;
        printf("%i \n", angle);

        radAngle = angle * (M_PI / 180);

        xc = WINDOW_WIDTH / 2;
        yc = WINDOW_HEIGHT / 2;

        x = xc + radius * cos(angle);
        y = yc + radius * sin(angle);
        SDL_RenderDrawPoint(basic_renderer, x, y);

    }
    if (angle >= 360)  {
        completedCircle = 1;
        printf("Pronto, seu círculo :)");
    }

}
int main() {
    int open = 1;
    (SDL_GetWindowSize(window, &w, &h));
    printf("A largura é : %i", w);
    printf("A altura é: %i", h);

    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("irmao, tem alguma coisa errado com o sdl ae pae");
    }

    if (!window) {
        //Se algo falhar, morre
        SDL_DestroyRenderer(basic_renderer);
        SDL_DestroyWindow(window);
        SDL_Quit();
    }
    window = SDL_CreateWindow("WINDOW_NAME", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);
    basic_renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);

    SDL_RenderClear(basic_renderer);
    SDL_SetRenderDrawColor(basic_renderer, 50, 50, 50, 255);

    //Loop Principal
    while (open) {
        //Loop pra garantir que a janela feche e nao feche
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_QUIT) {
                open = 0;
            }
        }
        //Renderizar circulo
        drawCircle(320, 240, 100);
        SDL_SetRenderDrawColor(basic_renderer, 255, 255, 255, 255);

        //Dar um delay para que a cpu nn va fritar um ovo
        SDL_RenderPresent(basic_renderer);
        SDL_Delay(16);
    }
    SDL_DestroyRenderer(basic_renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}