topical media & game development

topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _
#javascript-processing-example-basic-objects-compositeobjects.htm / htm

  <!DOCTYPE html>
  <html><head>
  <script src="javascript-processing-example-processing.js"></script>
  <script src="javascript-processing-example-init.js"></script>
  <link rel="stylesheet" href="javascript-processing-example-style.css">
  </head><body><h1><a href="http://ejohn.org/blog/processingjs/">Processing.js</a></h1>
  <h2>CompositeObjects</h2>
  
  <p>An object can include several other objects. Creating such composite objects 
  is a good way to use the principles of modularity and build higher levels of 
  abstraction within a program.</p>
  
  <p><a href="http://processing.org/learning/basics/compositeobjects.html"><b>Original Processing.org Example:</b> CompositeObjects</a><br>
  <script type="application/processing">
  EggRing er1, er2;
  
  void setup() 
  {
    size(200, 200);
    smooth();
    er1 = new EggRing(66, 132, 0.1, 66);
    er2 = new EggRing(132, 180, 0.05, 132);
  }
  
  void draw() 
  {
    background(0);
    er1.transmit();
    er2.transmit();
  }
  
  class EggRing 
  {
    Egg ovoid;
    Ring circle = new Ring();
    EggRing(int x, int y, float t, float sp) {
      ovoid = new Egg(x, y, t, sp);
      circle.start(x, y - sp/2);
    }
    void transmit() {
      ovoid.wobble();
      ovoid.display();
      circle.grow();
      circle.display();
      if (circle.on == false) {
        circle.on = true;
      }
    }
  }
  
  class Egg {
    float x, y; // X-coordinate, y-coordinate
    float tilt; // Left and right angle offset
    float angle; // Used to define the tilt
    float scalar; // Height of the egg
    // Constructor
    Egg(int xpos, int ypos, float t, float s) {
      x = xpos;
      y = ypos;
      tilt = t;
      scalar = s / 100.0;
    }
    void wobble() {
      tilt = cos(angle) / 8;
      angle += 0.1;
    }
    void display() {
      noStroke();
      fill(255);
      pushMatrix();
      translate(x, y);
      rotate(tilt);
      scale(scalar);
      beginShape();
      vertex(0, -100);
      bezierVertex(25, -100, 40, -65, 40, -40);
      bezierVertex(40, -15, 25, 0, 0, 0);
      bezierVertex(-25, 0, -40, -15, -40, -40);
      bezierVertex(-40, -65, -25, -100, 0, -100);
      endShape();
      popMatrix();
    }
  }
  
  class Ring {
    float x, y; // X-coordinate, y-coordinate
    float diameter; // Diameter of the ring
    boolean on = false; // Turns the display on and off
    void start(float xpos, float ypos) {
      x = xpos;
      y = ypos;
      on = true;
      diameter = 1;
    }
    void grow() {
      if (on == true) {
        diameter += 0.5;
        if (diameter > width*2) {
          diameter = 0.0;
        }
      }
    }
    void display() {
      if (on == true) {
        noFill();
        strokeWeight(4);
        stroke(155, 153);
        ellipse(x, y, diameter, diameter);
      }
    }
  }
  </script><canvas width="200" height="200"></canvas></p>
  <div style="overflow: hidden; height: 0px; width: 0px;"></div>
  
  <pre><b>// All Examples Written by <a href="http://reas.com/">Casey Reas</a> and <a href="http://benfry.com/">Ben Fry</a>
  // unless otherwise stated.</b>
  EggRing er1, er2;
  
  void setup() 
  {
    size(200, 200);
    smooth();
    er1 = new EggRing(66, 132, 0.1, 66);
    er2 = new EggRing(132, 180, 0.05, 132);
  }
  
  void draw() 
  {
    background(0);
    er1.transmit();
    er2.transmit();
  }
  
  class EggRing 
  {
    Egg ovoid;
    Ring circle = new Ring();
    EggRing(int x, int y, float t, float sp) {
      ovoid = new Egg(x, y, t, sp);
      circle.start(x, y - sp/2);
    }
    void transmit() {
      ovoid.wobble();
      ovoid.display();
      circle.grow();
      circle.display();
      if (circle.on == false) {
        circle.on = true;
      }
    }
  }
  
  class Egg {
    float x, y; // X-coordinate, y-coordinate
    float tilt; // Left and right angle offset
    float angle; // Used to define the tilt
    float scalar; // Height of the egg
    // Constructor
    Egg(int xpos, int ypos, float t, float s) {
      x = xpos;
      y = ypos;
      tilt = t;
      scalar = s / 100.0;
    }
    void wobble() {
      tilt = cos(angle) / 8;
      angle += 0.1;
    }
    void display() {
      noStroke();
      fill(255);
      pushMatrix();
      translate(x, y);
      rotate(tilt);
      scale(scalar);
      beginShape();
      vertex(0, -100);
      bezierVertex(25, -100, 40, -65, 40, -40);
      bezierVertex(40, -15, 25, 0, 0, 0);
      bezierVertex(-25, 0, -40, -15, -40, -40);
      bezierVertex(-40, -65, -25, -100, 0, -100);
      endShape();
      popMatrix();
    }
  }
  
  class Ring {
    float x, y; // X-coordinate, y-coordinate
    float diameter; // Diameter of the ring
    boolean on = false; // Turns the display on and off
    void start(float xpos, float ypos) {
      x = xpos;
      y = ypos;
      on = true;
      diameter = 1;
    }
    void grow() {
      if (on == true) {
        diameter += 0.5;
        if (diameter &gt; width*2) {
          diameter = 0.0;
        }
      }
    }
    void display() {
      if (on == true) {
        noFill();
        strokeWeight(4);
        stroke(155, 153);
        ellipse(x, y, diameter, diameter);
      }
    }
  }</pre>
  
  </body></html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _
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