modulo and ring of points working together

modulo ring points.pde

float radius=200;
int numPoints=4;

void setup(){
  size(500,500);
}

void draw () {
  if(frameCount % 15 == 1){
  numPoints = frameCount % 270;
  }
  background(0);
  stroke(255);
  strokeWeight(5);

  pushMatrix();
  translate(width/2, height/2);

float angle=TWO_PI/(float)numPoints;
for(int i=0;i<numPoints;i++)
{
  point(radius*sin(angle*i),radius*cos(angle*i));
} 

popMatrix();

}