Libgdx - How to draw filled rectangle in the right place in scene2d?

Question

I am using scene2d. Here is my code:

group.addActor(new Actor() {

    @Override
    public Actor hit(float arg0, flo         


        

Answer 1

As Rod Hyde mentions, ShapeRenderer has its own transform matrix and projection matrix. So you would have to get the SpriteBatch's projection Matrix first. I am not sure if there is an elegant way to do it, I did it like this:

public class myActor extends Actor{

    private ShapeRenderer shapeRenderer;
    static private boolean projectionMatrixSet;

    public myActor(){
        shapeRenderer = new ShapeRenderer();
        projectionMatrixSet = false;
    }

    @Override
    public void draw(SpriteBatch batch, float alpha){
        batch.end();
        if(!projectionMatrixSet){
            shapeRenderer.setProjectionMatrix(batch.getProjectionMatrix());
        }
        shapeRenderer.begin(ShapeType.Filled);
        shapeRenderer.setColor(Color.RED);
        shapeRenderer.rect(0, 0, 50, 50);
        shapeRenderer.end();
        batch.begin();
    }
}