按钮不会旋转libGDX [英] Button doesn´t rotate libGDX

问题描述

我想旋转一个按钮.因此，我编写了以下代码:

I want to rotate a button. Therefore I wrote the following code:

public void show () {
        skin2 = new Skin (Gdx.files.internal("SettingsButton.json"));
        button2 = new Button(skin2);
        button2.setPosition(25,1440);
        button2.setSize(120,120);
        button2.setOrigin(button2.getWidth() / 2, button2.getHeight() / 2);
        button2.addAction(Actions.repeat(RepeatAction.FOREVER,
                Actions.sequence(
                        Actions.rotateBy(360, 1), 
                        Actions.rotateTo(0))));
        button2.addListener(new ClickListener(){
            @Override
            public void clicked(InputEvent event, float x, float y) {
                game.setScreen(new SettingsScreen(game));
                super.clicked(event, x, y);
            }
        });

        stage.addActor(button2);
}

不幸的是，按钮没有旋转，但我不知道为什么. 如何改进我的代码?

Unfortunately, the button doesn´t rotate but I don´t know why. How can I improve my code?

推荐答案

出于性能原因，大多数scene2d.ui组默认将transform设置为false.

For performance reason most scene2d.ui groups have transform set to false by default.

有关更多详细信息，请检查
https://github.com/libgdx/libgdx/wiki/Scene2d .ui#rotation-and-scale

For more detail you can check
https://github.com/libgdx/libgdx/wiki/Scene2d.ui#rotation-and-scale

您需要使用setTransform(..)方法启用转换

You need to enable transform by using setTransform(..) method

button2.setTransform(true);

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