// Learning Processing
  // Daniel Shiffman
  // http://www.learningprocessing.com
  
  // Example 21-4: PDF and openGL
  
  // Using OPENGL
  import processing.opengl.*;
  import processing.pdf.*;
  
  // Cube rotation
  float yTheta = 0.0;
  float xTheta = 0.0;
  
  // A boolean variable that when set to true triggers the PDF recording process
  boolean recordPDF = false; 
  
  void setup() {
    // OPENGL or P3D mode requires the use of beginRaw() and endRaw() instead of beginRecord() and endRecord().
    size(400, 400, OPENGL); 
    smooth();
  }
  
  void draw() {
    // Begin making the PDF
    if (recordPDF) {
      beginRaw(PDF, "3D.pdf" ); // If you include "  
" in the filename -- "3D-  
.pdf" -- separate, numbered PDFs will be made for each frame that is rendered.



    }
    
    background(255);
    stroke(0);
    noFill();
    translate(width/2,height/2);
    rotateX(xTheta);
    rotateY(yTheta);
    box(100);
    xTheta += 0.02;
    yTheta += 0.03;
    
    // End making the PDF
    if (recordPDF) {
      endRaw();
      recordPDF = false;
    }
  }
  
  // Make the PDF when the mouse is pressed
  void mousePressed() {
    recordPDF = true;
  }