topical media & game development
animation-ch16-Cylinder.ax
animation-ch16-Cylinder.ax
[swf]
[flash]
flex
package {
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
public class @ax-animation-ch16-Cylinder extends Sprite
{
private var points:Array;
private var triangles:Array;
private var numFaces:uint = 20;
private var fl:Number = 250;
private var vpX:Number = stage.stageWidth / 2;
private var vpY:Number = stage.stageHeight / 2;
public function @ax-animation-ch16-Cylinder()
{
init();
}
private function init():void
{
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
points = new Array();
triangles = new Array();
var index:uint = 0;
for(var i:uint = 0; i < numFaces; i++)
{
var angle:Number = Math.PI * 2 / numFaces * i;
var xpos:Number = Math.cos(angle) * 200;
var ypos:Number = Math.sin(angle) * 200;
points[index] = new animation_ch16_Point3D(xpos, ypos, -100);
points[index + 1] = new animation_ch16_Point3D(xpos, ypos, 100);
index += 2;
}
for(i = 0; i < points.length; i++)
{
points[i].setVanishingPoint(vpX, vpY);
points[i].setCenter(0, 0, 200);
}
index = 0;
for(i = 0; i < numFaces - 1; i++)
{
triangles[index] = new animation_ch16_Triangle(points[index], points[index + 3], points[index + 1], 0x6666cc);
triangles[index + 1] = new animation_ch16_Triangle(points[index], points[index + 2], points[index + 3], 0x6666cc);
index += 2;
}
triangles[index] = new animation_ch16_Triangle(points[index], points[1], points[index + 1], 0x6666cc);
triangles[index+1] = new animation_ch16_Triangle(points[index], points[0], points[1], 0x6666cc);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onEnterFrame(event:Event):void
{
var angleX:Number = (mouseY - vpY) * .001;
var angleY:Number = (mouseX - vpX) * .001;
for(var i:uint = 0; i < points.length; i++)
{
var point:animation_ch16_Point3D = points[i];
point.rotateX(angleX);
point.rotateY(angleY);
}
graphics.clear();
for(i = 0; i < triangles.length; i++)
{
triangles[i].draw(graphics);
}
}
}
}
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.