Chapter 35 Example 12

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license : MIT License
modified : 2010-02-09 06:52:07

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package {
  import flash.display.Sprite;
  import flash.events.MouseEvent;
  
  [SWF(backgroundColor="#000000", frameRate="5")]
  public class ch35ex12 extends Sprite {
    public function ch35ex12() {
      stage.addEventListener(MouseEvent.CLICK, onClick);
    }
    
    protected function onClick(event:MouseEvent):void {
      var s:Sticker = new Sticker();
      s.x = stage.mouseX;
      s.y = stage.mouseY;
      s.scaleX = s.scaleY = 0.5 + Math.random()*0.5;
      s.rotationZ = (Math.random() - 0.5) * 20;
      addChild(s);
      event.updateAfterEvent();
    }
  }
}
import flash.display.*;
import flash.text.*;
import flash.filters.*;
import flash.geom.Matrix;
class Sticker extends Sprite {
  protected static const labels:Array = ["OMG!", "WOW!", "BETA", "MFJ", "ORLY",
    "LULZ", "OMFG", "KITTENS", "ZOMG", "WUT?", "2.0", "SNACKS!", "TACO",
    "ONOES!", "DESU"];
  protected static const SIZE:Number = 100;
  
  public function Sticker() {
    var gradientMatrix:Matrix = new Matrix();
    gradientMatrix.createGradientBox(SIZE, SIZE, Math.PI/2);
    
    graphics.lineStyle(5, 0, 1, false, null, null, JointStyle.MITER, 10);
    graphics.lineGradientStyle(GradientType.LINEAR,
      [0xfff600, 0x837749],
      [1, 1],
      [0, 255],
      gradientMatrix
    );
    
    graphics.beginGradientFill(GradientType.LINEAR,
      [makeColor(), makeColor()],
      [1, 1],
      [0, 255],
      gradientMatrix
    );
    
    drawPolyStar();
    graphics.endFill();
    
    var label:TextField = makeLabel();
    label.x = -0.5 * label.textWidth;
    label.y = -0.5 * label.textHeight;
    addChild(label); 
    filters = [new DropShadowFilter(0, 0, 0, 0.6, 64, 64, 1, 2)];
  }
  
  protected function drawPolyStar():void {
    var rdelta:Number = 10; //how pointy the points are
    var tdelta:Number = Math.PI*2 / 40; //40 points
    for (var t:Number = 0; t < Math.PI*2; t += tdelta) {
      rdelta *= -1;
      var x:Number = (SIZE + rdelta) * Math.cos(t);
      var y:Number = (SIZE + rdelta) * Math.sin(t);
      if (t == 0) {
        graphics.moveTo(x, y);
      } else {
        graphics.lineTo(x, y);
      }
    }
  }
  
  protected function makeLabel():TextField {
    var tf:TextField = new TextField();
    tf.width = tf.height = 0;
    tf.selectable = false;
    tf.autoSize = TextFieldAutoSize.LEFT;
    tf.defaultTextFormat = new TextFormat("_sans", 35, 0xffffff, true, true);
    tf.text = labels[Math.floor(Math.random() * labels.length)];
    return tf;
  }
  
  protected function makeColor():uint {
    var rnd:Function = function():uint{return uint(Math.random() * 128 + 128)};
    return (rnd() << 16 | rnd() << 8 | rnd());
  }
}

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