Sheridan Interactive Multimedia - Inverse Kinematics Example (IK Bone Tool with AS3 Code) in Flash CS4

AS3 Code in Flash 10

package spacebeing {

import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.events.*;
	
	import fl.ik.*

public class SpaceBeing extends MovieClip {

private var g:MovieClip;	
		private var myParts:IKArmature;
		private var neck:IKBone;		
		private var neckJoint:IKJoint;
		private var neckMax:Number;
		private var neckMin:Number;
		
		// just some numbers to tweak
		private var neckMoveDivisor:Number = 1.5;
		private var neckScaleDivisor:Number = 50;
		
        public function SpaceBeing() {
			trace ("greetings earthling");			
			addEventListener(Event.ADDED_TO_STAGE, init);
			// if you were to bring this into another swf
			// you would have to register the armature(s)
        }
		
		private function init(e:Event) {				
			addEventListener(Event.FRAME_CONSTRUCTED, init2);			
		}		
 
		private function init2(e:Event):void	{
			removeEventListener(Event.FRAME_CONSTRUCTED, init2);
			
			myParts = IKManager.getArmatureByName("bodyParts");
 			neck = myParts.getBoneByName( "neckBone" );			
			neckJoint = neck.headJoint;		
			
			// not used but wanted to show you the bug
			neckMin = neckJoint.rotationMin*180/Math.PI; // bug in Radians
			neckMax = neckJoint.rotationMax;			
			
			g = being.headPart.goggles;
			g.startX = g.x;
			g.startY = g.y;
			stage.addEventListener(MouseEvent.MOUSE_MOVE, monitor);
		}
		
		private function monitor(e:MouseEvent) {
			g.scaleX = 1 - Math.abs(neckJoint.rotation) / neckScaleDivisor;
			g.x = g.startX - (neckJoint.rotation) / neckMoveDivisor;
		}
    }
}

Here is the ZIP file. This file provides a steps document and FLA files at various stages in the creation of the spaceman. Please visit our exciting Blog at http://interactivemultimedia.wordpress.com