2009

Procedures
To make a light a projector:
1
Open the Material Editor on page 5284.
The Material Editor is where you adjust the map's parameters.
2 Use an unused sample slot to display a map.
3 Drag the map from the Material Editor to the light's Map button in the
Advanced Effects rollout. A dialog asks if the projection map should be
a copy or an instance. Choose Instance. If you choose Copy, adjusting
the map in the Material Editor has no effect on the projected map.
You can also drag from any other used map button, as in the Environment
dialog.
Assigning the map displays the map name in the button, and turns on
the Projector toggle. After you have set up the map, you can turn off
Projector to test rendering the scene without the projected image.
An alternative is to click the Map button. This displays the
Material/Map
Browser
on page 5290, which lets you choose the map type. At this point,
the light behaves as a projector. To assign a map or adjust its parameters,
you need to use the Material Editor.
NOTE Lights project maps only within their cone, even if Overshoot is turned
on.
To put the map in the Material Editor:
■ Drag from the light's Map button to an unused sample slot in the Material
Editor.
NOTE Sample slots with white triangles in the corners indicate materials that
are used in the current scene.
You can adjust the map in the Material Editor by changing the map's
parameters.
To blur a projection map:
■ Increase the value of Blur Offset in the map's Coordinates rollout in the
Material Editor.
Common Lighting Rollouts and Dialogs | 5109