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

Chapter 8 - Light Objects / Light Objects Reference

Light Objects Routines / Managing Spot Lights

Q3SpotLight_SetAttenuation

You can use the Q3SpotLight_SetAttenuation function to set the attenuation of a spot light.

TQ3Status Q3SpotLight_SetAttenuation (
TQ3LightObject light, 
TQ3AttenuationType attenuation);

light

A spot light object.

attenuation

The desired type of attenuation of the light. See "Light Attenuation Values" on page 8-9 for a description of the constants that can be passed in this parameter.

DESCRIPTION

The Q3SpotLight_SetAttenuation function sets the attenuation value of the spot light specified by the light parameter to the value passed in the attenuation parameter.