FitViewport不缩放actor [英] FitViewport does not scale actor

问题描述

我有FitViewport，其虚拟屏幕尺寸为1920x1080.

I have FitViewport with virtual screen size 1920x1080.

viewport = new FitViewport(AssetLoader.VIRTUAL_WIDTH, AssetLoader.VIRTUAL_HEIGHT);
stage = new Stage(viewport);

此外，还有从Actor类扩展的TimeBar类. TimeBar列表:

Also, there is TimeBar class extended from Actor class. TimeBar listing:

public class TimeBar extends Actor {
private Color color;
private ShapeRenderer renderer;
private float time, current;

public TimeBar() {
    color = Color.valueOf(AssetLoader.TIMEBAR_COLOR);
    renderer = new ShapeRenderer();
    renderer.setColor(color.r, color.g, color.b, color.a);

    setBounds(10, 10, 1800, 10); //rectangle is wider than the screen! Why?
}

@Override
public void draw(Batch batch, float parentAlpha) {
    super.draw(batch, parentAlpha);
    batch.end();
    renderer.begin(ShapeRenderer.ShapeType.Line);
    renderer.rect(getX(), getY(), getWidth(), getHeight());
    renderer.end();
    batch.begin();
}
}

我已经向render方法中添加了一些日志:

I've added some logs to render method:

    Gdx.app.log("GameRenderer", "resizing: " + width + " " + height);
    Gdx.app.log("GameRenderer", "world width: " + viewport.getWorldWidth());
    Gdx.app.log("GameRenderer", "stage width: " + stage.getWidth());
    Gdx.app.log("GameRenderer", "Time bar width: " + timeBar.getWidth());

他们说:

GameRenderer: world width: 1920.0
GameRenderer: stage width: 1920.0
GameRenderer: Time bar width: 1800.0

但是矩形比屏幕宽，为什么?

But rectangle is wider then the screen, why?

推荐答案

您正在使用预定义的视口创建舞台，因此舞台批处理的投影矩阵是由舞台视口定义的，但是当您创建ShapeRenderer时，投影矩阵是由和Gdx.graphics.getHeight()

You're creating Stage with predefined Viewport, so projection matrix of stage's batch is defined by stage viewport but when you create ShapeRenderer then projection matrix is defined by Gdx.graphics.getWidth() and by Gdx.graphics.getHeight()

用draw()方法写这两行.

renderer.setProjectionMatrix(batch.getProjectionMatrix());
renderer.setTransformMatrix(batch.getTransformMatrix());

或者您可以使用此类

https://github.com/itsabhiaryan/gdx-utils/blob/master/gdx-utils/src/com/ng/gdxutils/actor/ShapeRendererActor.java

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