text: #include "ofApp.h"
  
  void ofApp::setup()
  {
      ofBackground(0);
  }
  
  
  void ofApp::draw()
  {
      float w = ofGetWidth();
      float h = ofGetHeight();
      float halfW = w / 2;
      float halfH = h / 2;
  
      float radiusLarge = 200;
      float angleLargeDeg = 20;
  
      float radiusSmall = 30;
      float angleSmallDeg = 360 / 30;
  
      ofPushMatrix();
      ofTranslate(halfW, halfH);
  
      for (int i = 0; i < 360; i += angleLargeDeg)
      {
          ofPushMatrix();
          ofRotateZDeg(i);
          ofDrawLine(0, 0, radiusLarge, 0);
  
          ofPushMatrix();
          ofTranslate(radiusLarge, 0);
  
          for (int j = 0; j < 360; j += angleSmallDeg)
          {
              ofPushMatrix();
              ofRotateZDeg(j);
              ofDrawLine(0, 0, radiusSmall, 0);
              ofPopMatrix();
          }
  
          ofPopMatrix();
  
          ofPopMatrix();
      }
  
      ofPopMatrix();
  
  }
  