Open the file ch3_Sphere_Goraud_Phong.html in your HTML5 browser. You will see something similar to the following screenshot:
The interface looks a little bit more elaborate than the diffuse lighting example. Let's stop here for a moment to explain these widgets:
Light color (light diffuse term): As mentioned at the beginning of the chapter, we can have a case where our light is not white. We have included a color selector widget here for the light color so you can experiment with different combinations.
Light ambient term: The light ambient property. In this example, a gray value: r = g = b.
Light specular term: The ...
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