#include <SDL2/SDL.h>
#include <stdio.h>
#include <stdlib.h>
#include "util.h"
#include "sdlw.h"
#define sdl_clear(r) SDL_SetRenderDrawColor(r,0,0,0,0);\
    SDL_RenderClear(r);
bw sdl_init(){
  if(SDL_Init(SDL_INIT_VIDEO)<0){
    err("failed to initialize sdl2 lib:(",pexit);
  }
  SDL_Renderer *r;
  SDL_Window *w;
  SDL_CreateWindowAndRenderer(400,400,0,&w,&r);

  if(!w)
    err("failed to create window",pexit);
  sdl_clear(r);
  SDL_RenderPresent(r);
  //SDL_Delay(5000);
  bw both;
  both.w =w;
  both.r =r;
  return both;
}
void sdl_loop(bw w){
  SDL_Event e;
  //SDL_SetRenderDrawColor(w.r,255,0,0,255);
  //for(int i = 0; i!=50;i++)
  //  SDL_RenderDrawPoint(w.r,i,i);     
  SDL_RenderPresent(w.r);
  for(;;){
    while(SDL_PollEvent(&e) > 0){
      switch(e.type){
        case SDL_QUIT:
          return;
      }
      
      //SDL_UpdateWindowSurface(w.w);
    }
  }
}
void sdl_circle(bw w,int x, int y, int r){
  SDL_SetRenderDrawColor(w.r,255,255,0,0);
  for(int i = 1; i!=360; i++){
    float cf = cosf(i);
    float sf = sinf(i);
    for(int z = 1; z<=r; z++){
    int x2 = x + z * cf;
    int y2 = y + z * sf; 
    
    SDL_RenderDrawPoint(w.r,x2,y2);
    }
  }
}
int main__2(){
  bw b = sdl_init();
  SDL_SetRenderDrawColor(b.r,255,255,0,0);
  SDL_RenderDrawPoint(b.r,5,5);
  sdl_loop(b);
  return 0;
}