Page 1160 - Kitab3DsMax

Part XI: Advanced Lighting and Rendering
The Distance Affects option alters the effect’s Size and/or Intensity based on its distance from the camera.
The Off-Center Affects option is similar, except that it affects the effect’s size and intensity based on its Off-
Center distance. The Direction Affects options can affect the size and intensity of an effect based on the
direction in which a spotlight is pointing.
The Occlusion settings can be used to cause an effect to be hidden by an object that lies between the effect
and the camera. The Inner Radius value defines the area that an object must block in order to hide the
effect. The Outer Radius value defines where the effect begins to be occluded. You can also set the Size and
Intensity options for the effect. The Affected by Atmospheres option allows effects to be occluded by atmo-
spheric effects.
Glow
The Glow Element rollout, shown in Figure 46.20, includes parameters for controlling the look of the Glow
Lens Effect. This rollout has two tabbed panels: Parameters and Options.
FIGURE 46.20
The Glow Element rollout lets you set the parameters for the Glow effect.

The Glow Element Parameters tabbed panel
In the Parameters tabbed panel of the Glow Element rollout, there is a Name field. Several glow effects can
be added to a scene, and each one can have a different name. The On option turns each glow on and off.
The Parameters panel also includes Size and Intensity values. These work with the Global settings to deter-
mine the size of the glow and can be set to any positive value. The Occlusion and Use Source Color values
are percentages. The Occlusion value determines how much of the occlusion set in the Scene panel of the
Lens Effects Globals rollout is to be used. If the Use Source Color is at 100 percent, then the glow color is
determined by the light color; if it is set to any value below 100, then the colors specified in the Source and
Circular Color sections are combined with the light’s color.
This panel also includes Glow Behind and Squeeze options. Glow Behind makes the glow effect visible
behind objects. Squeeze enables any squeeze settings specified in the Parameters panel.
If the Use Source Color value is set to 0 percent, only the Radial Color swatches determine the glow colors.
Radial colors proceed from the center of the glow circle to the outer edge. The first swatch is the inner color,

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