Cocos2dx 小技巧（十三）聊聊坐标系

auto point = touch->getLocationInView();//获得屏幕坐标系

auto point = touch->getLocation();//直接从touch中获取,在getLocation()源码里会将坐标转成OpenGL坐标系

auto point = touch->getLocationInView();
point = Director::getInstance()->convertToGL(point);//先获得屏幕坐标，在调用convertToGL转成OpenGl坐标系

bool HelloWorld::onTouchBegan(Touch* touch,Event* event)
{
	auto point = touch->getLocation();//获得OpenGl坐标系
	CCLOG("Location point x=%f , y=%f",point.x,point.y);

	auto point2 = touch->getLocationInView();//获得屏幕坐标
	CCLOG("LocationInView point x=%f , y=%f",point2.x,point2.y);

	point2 = Director::getInstance()->convertToGL(point2);//将屏幕坐标转成OpenGL坐标
	CCLOG("convertToGL1 point x=%f , y=%f",point2.x,point2.y);

	point2 = Director::getInstance()->convertToGL(point2);//注意这个
	CCLOG("convertToGL2 point x=%f , y=%f",point2.x,point2.y);

	return true;
}

我当前屏幕的分辨率为：960x640。输出结果如下：