Draw font on top of box2d body

问题

How can I draw text (font) on top of my static box2d body?

Background: Im able to draw sprites on top of bodies correctly. I do this by having a box2dSpriteBatch which is projected on box2dCamera like so box2dSpriteBatch.setProjectionMatrix(box2dCamera.combined); And then simply rendering the sprite in the correct spot using getPosition of the body.

But if i try the same way for fonts, unfortunately it scales incredibly large, and if i try to scale the font down it doesn't appear. So im assuming I need to draw the text in window coordinates instead of box2d.

My attempt:

• in show(): windowCamera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());

• in my Render method i call windowSpriteBatch.setProjectionMatrix(windowCamera.combined);

• also in Render i render the font

  whiteFont.setScale(0.7f, 0.7f); sb.begin(); whiteFont.draw(sb, "2", body.getPosition().x, (questionLineBody.getPosition().y)*PPM); sb.end();

回答1:

The solution was to Basically * my x position by PPM.

ie.

Add these lines to the Render method:

windowCamera.position.y = box2dCamera.position.y * PPM;
windowCamera.update();
windowSpriteBatch.setProjectionMatrix(windowCamera.combined);

And Render the font like so:

whiteFont.draw (sb,"2", body.getPosition().x * PPM, body.getPosition().y * PPM);

来源：https://stackoverflow.com/questions/27258453/draw-font-on-top-of-box2d-body