2009
Projector Map group
These controls make the photometric light a projector.
Check box Turn on to project the map selected by the Map button. Turn off
to turn off projection.
Map Names the map used for the projection. You can drag from any map
specified in the Material Editor, or any other map button (as on the
Environment panel), and drop that map on the light's Map button. Clicking
Map displays the Material/Map Browser. You can choose the map type using
the Browser, then drag the button to the Material Editor, and use the Material
Editor to select and adjust the map.
mental ray Indirect Illumination Rollout (for
Lights)
Create panel > Lights > Create a light. > Modify panel > mental ray Indirect
Illumination rollout
NOTE This rollout does not appear on the Create panel.
The mental Indirect Illumination rollout provides controls for light behavior
with the mental ray renderer on page 6230. The settings on this rollout have no
effect on rendering with the default scanline renderer, or on advanced lighting
(the light tracer or a radiosity solution). These settings control how the light
behaves when it generates indirect illumination; that is,
caustics on page 6255
and
global illumination on page 6261.
TIP By default, each light uses the global settings found in the Light Properties
group on the Render Setup Dialog > Indirect Illumination panel >
Caustics and
Global Illumination rollout
on page 6306. It is more convenient to adjust all lights
in the scene at once. If you need to adjust a specific light, you can use the multiplier
controls for energy and photons. In general, you should rarely, if ever, need to
turn off Use Global Settings and specify local light settings for indirect illumination.
IMPORTANT In addition to the values specified here, the light must also be set
to generate caustics, global illumination, or both. These controls are on the
mental
ray panel
on page 322 of the Object Properties dialog. You also need to turn on
Caustics, Global Illumination, or both, on the Render Setup Dialog > Indirect
Illumination panel > Caustics and Global Illumination Rollout (mental ray Renderer)
on page 6306.
5112 | Chapter 18 Lights and Cameras