FitViewport 不缩放演员

Question

我有FitViewport，虚拟屏幕尺寸为 1920x1080。

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

此外，还有从 Actor 类扩展而来的 TimeBar 类。 TimeBar上市：

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();
}
}

我在render 方法中添加了一些日志：

    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？

Answer 1

您正在使用预定义的视口创建舞台，因此舞台批次的投影矩阵由舞台视口定义，但是当您创建 ShapeRenderer 时，投影矩阵由Gdx.graphics.getWidth() 和Gdx.graphics.getHeight() 定义

将这两行写在draw()方法中。

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

或者你可以使用这个类

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