#include <iostream>
#include <SDL2/SDL.h>
using namespace std;

const int WIDTH = 800, HEIGHT = 600;

void drawCircle(int x, int y, int r, SDL_Renderer *renderer) {
    for (int w = 0; w < r * 2; w++) {
        for (int h = 0; h < r * 2; h++) {
            int dx = r - w; // horizontal offset
            int dy = r - h; // vertical offset
            if ((dx*dx + dy*dy) <= (r * r)) {
                SDL_RenderDrawPoint(renderer, x + dx, y + dy);
            }
        }
    }
}

int main (int argc, char *argv[] ){
    SDL_Init(SDL_INIT_EVERYTHING);
    SDL_Window *window = SDL_CreateWindow("Pusheen cat", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, WIDTH, HEIGHT, SDL_WINDOW_ALLOW_HIGHDPI);
    SDL_Renderer *renderer = SDL_CreateRenderer(window, 1, SDL_RENDERER_ACCELERATED);
    if (NULL == window) {
        cout << "could not create window: " << SDL_GetError() << endl;
        return 1;
    }
    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
    // body
   
    SDL_RenderDrawLine(renderer, 100, 380, 80, 340);
    SDL_RenderDrawLine(renderer, 80, 340, 60, 280);
    SDL_RenderDrawLine(renderer, 60, 280, 60, 220);
    SDL_RenderDrawLine(renderer, 60, 220, 20, 180);
    SDL_RenderDrawLine(renderer, 20, 180, 10, 160);
    SDL_RenderDrawLine(renderer, 10, 160, 10, 140);
    SDL_RenderDrawLine(renderer, 10, 140, 20, 140);
    SDL_RenderDrawLine(renderer, 20, 140, 40, 140);
    SDL_RenderDrawLine(renderer, 40, 140, 60, 150);
    SDL_RenderDrawLine(renderer, 60, 150, 75, 155);
    SDL_RenderDrawLine(renderer, 75, 155, 110, 120);
    SDL_RenderDrawLine(renderer, 110, 120, 150, 100);
    SDL_RenderDrawLine(renderer, 150, 100, 170, 90);
    SDL_RenderDrawLine(renderer, 170, 90, 360, 90);
    SDL_RenderDrawLine(renderer, 360, 90, 380, 60);
    SDL_RenderDrawLine(renderer, 380, 60, 410, 90);
    SDL_RenderDrawLine(renderer, 410, 90, 480, 90);
    SDL_RenderDrawLine(renderer, 480, 90, 510, 60);
    SDL_RenderDrawLine(renderer, 510, 60, 540, 100);
    SDL_RenderDrawLine(renderer, 540, 100, 570, 180);
    SDL_RenderDrawLine(renderer, 570, 180, 580, 240);
    SDL_RenderDrawLine(renderer, 580, 240, 560, 300);
    SDL_RenderDrawLine(renderer, 560, 300, 520, 380);
    SDL_RenderDrawLine(renderer, 520, 380, 520, 390);
    SDL_RenderDrawLine(renderer, 520, 390, 510, 400);
    SDL_RenderDrawLine(renderer, 510, 400, 500, 390);
    SDL_RenderDrawLine(renderer, 500, 390, 500, 380);    
    SDL_RenderDrawLine(renderer, 500, 380, 405, 380);
    SDL_RenderDrawLine(renderer, 405, 380, 400, 385);
    SDL_RenderDrawLine(renderer, 400, 385, 390, 400);
    SDL_RenderDrawLine(renderer, 390, 400, 380, 390);
    SDL_RenderDrawLine(renderer, 380, 390, 370, 380);
    SDL_RenderDrawLine(renderer, 370, 380, 260, 380);
    SDL_RenderDrawLine(renderer, 260, 380, 250, 390);
    SDL_RenderDrawLine(renderer, 250, 390, 240, 400);
    SDL_RenderDrawLine(renderer, 240, 400, 230, 390);
    SDL_RenderDrawLine(renderer, 230, 390, 220, 380);
    SDL_RenderDrawLine(renderer, 220, 380, 140, 380);
    SDL_RenderDrawLine(renderer, 140, 380, 130, 390);
    SDL_RenderDrawLine(renderer, 130, 390, 120, 400);
    SDL_RenderDrawLine(renderer, 120, 400, 110, 390);
    SDL_RenderDrawLine(renderer, 110, 390, 100, 380);

    // right whiskers 
    SDL_RenderDrawLine(renderer, 550, 130, 590, 120);
    SDL_RenderDrawLine(renderer, 560, 150, 600, 140);

    // left whiskers
    SDL_RenderDrawLine(renderer, 340, 120, 380, 130);
    SDL_RenderDrawLine(renderer, 350, 140, 390, 150);

    // eyes
    drawCircle(420, 140, 10, renderer);
    drawCircle(520, 140, 10, renderer);

    // mouth
    SDL_RenderDrawLine(renderer, 470, 150, 470, 160);
    SDL_RenderDrawLine(renderer, 450, 175, 460, 170);
    SDL_RenderDrawLine(renderer, 460, 170, 470, 160);
    SDL_RenderDrawLine(renderer, 490, 175, 480, 170);
    SDL_RenderDrawLine(renderer, 480, 170, 470, 160);
    
    SDL_RenderPresent(renderer);

    SDL_Event windowEvent;
    while (true) {
        if (SDL_PollEvent(&windowEvent)) {
            if (SDL_QUIT == windowEvent.type) {
                break;
            }
        }
    }
    SDL_DestroyWindow(window);
    SDL_Quit();
    return EXIT_SUCCESS;
}