Infinite tiles in libGDX

drawBackground.java

// Draw a background
	private void drawBackground() {
		// To simplify the code a little, do these calculations ahead of time
		// To speed things up, we might optimize this.
		float cameraLeft = camera.position.x - camera.viewportWidth / 2f;
		float cameraRight = camera.position.x + camera.viewportWidth / 2f;
		float cameraTop = camera.position.y + camera.viewportHeight / 2f;
		float cameraBottom = camera.position.y - camera.viewportHeight / 2f;
		
		float width = background.getWidth();
		float height = background.getHeight();
		
		for(float column = (float) Math.floor(cameraLeft / width) * width; column < cameraRight; column += width) {
			for(float row = (float) Math.floor(cameraBottom / height) * height; row < cameraTop; row += height) {
				batch.draw(background, column, row);
			}
		}
	}