Flash3D 编程技巧：全景浏览的鼠标交互（Away3D Lite）

1. 注册侦听器

addEventListener(Event.ENTER_FRAME, onEnterFrame);
stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);

 

2. MouseDown触发函数

// 保存鼠标点击的摄像机参数和鼠标坐标信息
private function onMouseDown(event:MouseEvent):void
{
    lastPanAngle = camera.panAngle;
    lastTiltAngle = camera.tiltAngle;
    lastMouseX = stage.mouseX;
    lastMouseY = stage.mouseY;
	move = true;
	stage.addEventListener(Event.MOUSE_LEAVE, onStageMouseLeave);
}

 

3. MouseUp触发函数

private function onMouseUp(event:MouseEvent):void
{
	move = false;
	stage.removeEventListener(Event.MOUSE_LEAVE, onStageMouseLeave);     
}

 

4. 每帧都调用的onEnterFrame

private function onEnterFrame(event:Event):void
{
	if (move) {
		camera.panAngle = 0.3*(stage.mouseX - lastMouseX) + lastPanAngle;
		camera.tiltAngle = 0.3*(stage.mouseY - lastMouseY) + lastTiltAngle;
	}
	
	camera.hover();
	view.render();
}