平移关节(Prismatic Joint)

package{
    import Box2D.Common.Math.b2Vec2;
    import Box2D.Dynamics.b2Body;
    import Box2D.Dynamics.Joints.b2PrismaticJointDef;

    /**
    * 平移关节，将两个刚体锁定一个平移的轴，其中一个刚体移动另一个刚体的锁定轴坐标也移动
    */
    public class Main extends BaseMain{
        
        
        public function Main(){
            super(new b2Vec2(0,10));
        }
        
        override protected function init():void{
            var bodyA:b2Body=this.createBox(50,50,100,400);
            var bodyB:b2Body=this.createCircle(25,700,400);
            
            
            var jointDef:b2PrismaticJointDef=new b2PrismaticJointDef();
            
            var anchor:b2Vec2=bodyA.GetWorldCenter();
            var axis:b2Vec2=new b2Vec2(1,0);
            jointDef.Initialize(bodyA,bodyB,anchor,axis);
            _world.CreateJoint(jointDef);
            
            bodyA.SetFixedRotation(true);
        }
        
        
    };
}

更多说明：http://blog.csdn.net/qq51931373/article/details/9019937

源码下载：http://yunpan.cn/c3aTsiqhQ6Ikc  访问密码 41ea