Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 8 - Light Objects / Light Objects Reference

Light Objects Routines / Managing Spot Lights

Q3SpotLight_SetFallOff

You can use the Q3SpotLight_SetFallOff function to set the fall-off value of a spot light.

TQ3Status Q3SpotLight_SetFallOff (
TQ3LightObject light, 
TQ3FallOffType fallOff);

light

A spot light object.

fallOff

The desired fall-off value of the specified spot light. See "Light Fall-Off Values" on page 8-10 for a description of the constants that can be passed in this parameter.

DESCRIPTION

The Q3SpotLight_SetFallOff function sets the fall-off value of the spot light specified by the light parameter to the value passed in the fallOff parameter.