Engage thrusters

This scene retains the first two objects created previously and adds a point light that can be thought of as a light bulb—a light from a single point emanating in all directions. We turned off the headlight inside the <NavigationInfo> tag, and at the same time, restricted movement in the scene by setting type to NONE, simply to introduce this as part of the demo. At the same time, the <Viewpoint> tag or camera is introduced with its default position value, orientation (rotation) value, and fieldOfView value that defaults to π/4, that is, 0.785 radians. The added code is as follows:

<Scene>
    <NavigationInfo headlight="FALSE" type='"NONE"'/>
    <PointLight location="0 3 2"/>
    <Viewpoint position="0 0 10" orientation="0 0 1 0"
        fieldOfView=".785"/>
    <Transform …>

The point light is 3 units up and 2 units in front, so it clearly shines on the top of the box and to the left-hand side of the cone but not on the left-hand side of the box or the bottom of the cylinder.