3D Programming Tricks - Beginning Android Games - page 547

pointLight.disable(gl);
directionalLight.disable(gl);

gl.glDisable(GL10. GL_TEXTURE_2D );
gl.glDisable(GL10. GL_DEPTH_TEST );
}

Here it gets interesting. The first couple of lines are our boilerplate code for clearing the
colorbuffer and depthbuffer—enabling depth testing and setting the viewport.

Next, we set the projection matrix to a perspective projection matrix via gluPerspective() and also
use gluLookAt() for the model-view matrix, so that we have a camera setup as shown in Figure 11-6 .
Next, we enable lighting itself. At this point, we haven't defined any lights, so we do that in the
next couple of lines by calling the enable() methods of the lights as well as the material.
As usual, we also enable texturing and bind our crate texture. Finally, we call glRotatef() to
rotate our cube and then render its vertices with well-placed calls to the Vertices3 instance.
To round off the method, we disable the point and directional lights (remember, the ambient light is a
global state) as well as texturing and depth testing. And that's all there is to lighting in OpenGL ES!

@Override
public void pause() {
}

@Override
public void dispose() {
}
}

The rest of the class is just empty; we don't have to do anything special in case of a pause.

Figure 11-7 shows the output of our example.

Figure 11-7. Our scene from Figure 11-6 , rendered with OpenGL ES