Center rectangle-object in the screen by using glOrthof in Android with opengles 2, with java-CodePudding

I'm working on the examples of the book OpenGlEs 2 for Android. I did the first example, for drawing a rectangle of base 9, and height 14, by using the below array for defining the coordinates

private float[] tableVerticesWithTriangles = {
        //Triangle
        0f, 0f,
        9f, 14f,
        0f, 14f,
        //Triangle 2
        0f, 0f,
        9f, 0f,
        9f, 14f
};

The rectangle is appearing as in the example, the white rectangle in the top right corner:

The code I'm working on is in the repository

The key is to know the width and the height of the collision box of the object I want to draw, then it is just a matter of scaling the left, right or bottom/top variables based on the orientation of the screen, with the aspectRatio variable. I placed the code in the repository:

https://github.com/quimperval/opengl-es-android-draw-object