366

Sensing the viewer

Motivation   367   Sensing the viewer   368   Using visibility and proximity sensors   369   Syntax: VisibilitySensor   370   Syntax: ProximitySensor   371   Syntax: ProximitySensor   372   Detecting viewer-shape collision   373   Creating collision groups   374   Syntax: Collision   375   Proximity sensors and collision groups example   376   Optimizing collision detection   377   Using multiple sensors   378   Summary   379   Summary   380   Summary   381