libgdx在其Y轴上旋转actor [英] Libgdx rotate an actor on its Y axis

问题描述

我正在尝试在Libgdx中制作卡片翻转动画. Sprite和Actor仅支持顺时针/逆时针旋转. 因此，我认为我可以通过在相机对象中使用旋转"功能来实现. 问题在于它不仅影响演员，而且影响整个舞台.

I'm trying to do a card flip animation in Libgdx. Sprites and Actors support only rotation clockwise/counter-clockwise. So I thought that I can achieve that by using the Rotate function in the camera object. The problem is that it affects the whole stage and not just the actor.

如何在不创建新阶段的情况下实现这种影响?

How can I achieve this affect without creating a new stage?

推荐答案

好吧，您从来没有定义卡片背面的样子，因为演员只是图像；)

Well you have never defined what the back side of a card looks like, since actors are just images ;)

您可以做的是使用两张图像，一幅用于正​​面，一幅用于背面(起初是不可见的).

What you could do is to use two images, one for the front, one for the back (which is at first invisible).

翻转卡片时，您将添加一个Action，该Action将frontImage的x分量缩放为0，然后将backimage从0缩放为1.

When flipping the card you would add an Action that scales the x-component of the frontImage to 0, and then scales the backimage from 0 to 1.

所以首先，您必须隐藏背景图像

So at first you would have to hide the backimage

cardBack.addAction(Actions.scaleTo(0,1);

然后在翻转时，您可以执行以下操作:

Then when flipping, you could do something like this:

cardFront.addAction(Actions.scaleTo(0,1, DURATION/2));
cardBack.addAction(Actions.delay(DURATION/2), Actions.scaleTo(1,1, DURATION/2));

希望这对您有帮助...:)

Hope this helps... :)

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