272 ◾ 3D Animation for the Raw Beginner Using Maya
FIGURE 9.38 Dragging light fog to the light.
FIGURE 9.39 Light eect attributes.
FIGURE 9.40 Light fog attributes.
Light Fog, Fluids, and Another Look at Materials ◾ 273
Making a Material Behave Like a Light
We have been explicitly placing lights in scenes. ere is an alternative way of introducing
light into a scene, and this is by giving materials on objects the ability to generate light.
ere are several ways to do this sort of thing in Maya, and here, we look at one of the most
widely used: Glow Intensity.
In Figure9.36, two objects have been added to the scene. ey are spheres sitting in the
upper-right part of the scene. ey have had a Blinn material assigned to them, and its
attributes are seen in Figure9.41. Notice the bottom slider. We have assigned the material
a nonzero value in the Glow Intensity box. We have also selected Hide Source because we
do not actually want to see the spheres themselves, just their glow eect.
The Render
As a reminder, in Figure9.42, we see that there is only one light in the scene: the point light
in the streetlight. But in Figure9.43, we see two new lights: the headlights. We see the fog
as well.
FIGURE 9.41 Headlight attributes. FIGURE 9.43 Fog and headlights.
FIGURE 9.42 Streetlight point light.
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