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Omni Ligh t 1295
Omni Light
Create panel > Lights > Standard > Omni button
Create menu > Standard Lights > Omni Light
Top: Top view of an omni light
Bottom: Perspective view of the same light
An Omni lig ht casts rays in all directions from a
single source. Omni l ights are useful for adding
"fill l ighting" to your scene, or simulating point
source lights.
Omni lights can cast shadows and projections. A
single shadow-casting omni light is the equivalent
of six shadow-casting spotlights, pointing outward
from the center.
When you set a m ap projected by an Omni light
to be projected using the Spherical, Cylindrical,
or Shrink Wrap En vironment coordinates, the
map is projected in the same way as it would b e
mapped to the environment. When you use the
Screen Environment coordinat es or Explicit Map
Channel Texture coordinates, six copies of the map
are projected radially.
Tip: Omni lights can generate up to six quadtrees
(page 3–999),sotheygenerateray-traced
shadows more slowly than spotlights. Avoid using
ray-traced shadows with omni lights u n less your
scene requires this.
See also
Lights (page 2–1272)
Name and Color Rollout (Lights) (page 2–1273)
General Lighting Parameters (page 2–1331)
In tensity/Color/Attenuation Par ameters (page
2–1345)
Advanced Effects Rollout (page 2–1341)
Shadow Parameters (page 2–1337)
Procedure
To create a n omni light:
1.
OntheCreatepanel,clickLights.
Standard is the default choice of light type.
2. In the Object Type rollout, click Omni.
3. Click the v iewport location where you want
the light to be. If you drag the mouse, you
can move the light around before releasing the
mouse to fix its position.
The light is now part of the scene.
4. Set the creation parameters.
To a djust t he l i g ht’ s e f f e c t , you c a n m o ve i t a s
you would any object.