8

304 Chapter 18: Effects and Environments
Sphere gizmo with volume fog
Pr ocedur es
To create the S phereG izmo:
1.
Drag in any viewport to define the initial radius.
2. Adjust the radius with the spinner.
To add a new a tmosphere:
1.
Select the apparatus g izmo.
2. IntheModifypanelontheAtmospheres&
Effects rollout, click Add. This displays the
Add
Atmosphere dialog (page 3–300)
.
3. Choose an atmosphere f rom the list.
4. Click OK.
This associates a new atmosphere with the
apparatus.
To a dd a n ex ist ing at mosphere:
1.
Select the apparatus g izmo.
2. IntheModifypanelontheAtmospheres&
Effects rollout, click Add. This displays the
Add
Atmosphere dialog (page 3–300)
.
3. In the dialog, choose Existing.
4. Choose an atmosphere f rom the list.
5. Click OK.
This creates a duplicate atmosphere for the
apparatus. Its settings are initially identical to
the atmosphere you chose. You can adjust them
using Setup.
Interfa ce
Name and Color rollout
The
Name and Color rollout (page 3–800)
lets you
rename objects and change their wireframe color.
Sphere Gizmo Parameters rollout
Radius—Sets the radius of the default sphere.
Hemispher e—When turned on, the bottom half
of the SphereGizmo is discarded, creating a
hemisphere.
Seed—Sets a base value used to generate the
atmospheric effect. Each apparatus in the scene
should have a different seed. If more than
one apparatus uses the same seed and same
atmospheric effect, they will produce nearly
identical results.
New S eed—Click to generate a random number
automatically and place it in the seed field.