The Cube RenderObject component

For demonstration purposes, we'll start with a simple cube. Later on, we'll improve it with lighting. In Chapter 3, Cardboard Box, we defined a Cube model. We'll start by using the same class and data structure here. You can even copy the code, but it's shown in the following text. Create a Cube Java class in the renderbox/components/ folder:

// File: renderbox/components/Cube.java
public class Cube {
    public static final float[] CUBE_COORDS = new float[] {
            // Front face
            -1.0f, 1.0f, 1.0f,
            -1.0f, -1.0f, 1.0f,
            1.0f, 1.0f, 1.0f,
            -1.0f, -1.0f, 1.0f,
            1.0f, -1.0f, 1.0f,
            1.0f, 1.0f, 1.0f,

            // Right face
            1.0f, 1.0f, 1.0f,
            1.0f, -1.0f, 1.0f,
            1.0f, 1.0f, -1.0f,
            1.0f, -1.0f, 1.0f,
            1.0f, -1.0f, -1.0f,
            1.0f, 1.0f, -1.0f,

            // Back face
            1.0f, 1.0f, -1.0f,
            1.0f, -1.0f...