hedgehog_inception

int slices = 40;
float pie_slice = TWO_PI/slices;

float x, y, szX, szY, theta, theta2;

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

void draw() {
  background(240);
  fill(20,150);
  x = width/3;
  y = map(sin(theta), -1, 1, 100, 180);
  float edge = height/10;
  szY = y - edge ;
  szX = 500;
  for (int i=0; i<slices; i++) {
    pushMatrix();
    translate(width/2, height/2);
    rotate(i*pie_slice);
    arc(x, y, szX, szY*2, (PI*1.5)-(pie_slice/2), (PI*1.5)+(pie_slice/2));
    popMatrix();
  }
  theta += 0.0523;

  x = width/5;
  y = map(sin(-theta*2), -1, 1, 100, 200);
  edge = height/10;
  szY = y - edge ;
  szX = 500;
  for (int i=0; i<slices; i++) {
    pushMatrix();
    translate(width/2, height/2);
    rotate(i*pie_slice);
    arc(x, y, szX, szY*2, (PI*1.5)-(pie_slice/2), (PI*1.5)+(pie_slice/2));
    popMatrix();
  }
  theta2 -= 0.0523;
}