我创建了一个相机:camera=newOrthographicCamera(5.0f,5.0f*h/w);创建Sprite:ballTexture=newTexture(Gdx.files.internal("data/ball.png"));ballTexture.setFilter(TextureFilter.Linear,TextureFilter.Linear);TextureRegionregion=newTextureRegion(ballTexture,0,0,ballTexture.getWidth(),ballTexture.getHeight());ball=new