week 09

void setup(){
  size(600,300);
}
int x=50,y=50,a=45,da=1;
void draw(){
background(0);
fill(#F5ED02);
arc(x,y,100,100, radians(a), radians(360-a),PIE);
x++;
a+=da;
if(a>60) da=-1;
if(a<=0)da=+1;
}