Point Light Data Structure (IM: QD3D)

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

Chapter 8 - Light Objects / Light Objects Reference

Point Light Data Structure
You use a point light data structure to get or set information about a point light source. A point light data structure is defined by the TQ3PointLightData data type.
typedef struct TQ3PointLightData {
   TQ3LightData               lightData;
   TQ3Boolean                 castsShadows;
   TQ3AttenuationType         attenuation;
   TQ3Point3D                 location;
} TQ3PointLightData;
Field Description

lightData
A light data structure specifying basic information about the point light.
castsShadows
A Boolean value that indicates whether the point light casts shadows (kQ3True) or not (kQ3False).
attenuation
The type of attenuation of the point light. See "Light Attenuation Values" on page 8-9 for a description of the constants this field can contain.
location
The location of the point light, in world coordinates.