我可以在libGDX中使用PerspectiveCamera渲染SpriteBatch吗？

Question

我可以使用透视相机渲染我的精灵批次吗？

我的精灵(装有相同纹理的精灵)看起来大小相同,但我希望相机在某个高度处放置在屏幕底部,因此位于屏幕顶部附近的精灵看起来更小.现在它看起来像左边的那个,但我希望它看起来像右边的那个:

Answer 1

是的,虽然您可能需要稍微调整/缩放坐标(您可以使用spriteBatch.setTransformMatrix在一次调用中执行此操作).这是一个小例子:

public class SpriteBatch3DTest extends GdxTest {
   PerspectiveCamera cam;
   CameraInputController camController;
   SpriteBatch spriteBatch;
   Texture texture;

   @Override
   public void create () {
       cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
       cam.position.set(0f, 8f, 8f);
       cam.lookAt(0,0,0);
       cam.near = 0.1f;
       cam.far = 300f;
       cam.update();

       spriteBatch = new SpriteBatch();

       camController = new CameraInputController(cam);
       Gdx.input.setInputProcessor(camController);
       texture = new Texture(Gdx.files.internal("data/badlogic.jpg"));
   }

   @Override
   public void render () {
    camController.update();
    spriteBatch.setProjectionMatrix(cam.combined);

    Gdx.gl.glViewport(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);

    spriteBatch.begin();
    spriteBatch.draw(texture, -5f, -5f, 10f, 10f);
    spriteBatch.end();
   }

   @Override
   public void dispose () {
       spriteBatch.dispose();
       texture.dispose();
   }

    public boolean needsGL20 () {
        return true;
    }

    public void resume () {
    }

    public void resize (int width, int height) {
    }

    public void pause () {
    }
}