User's Manual

121

Chapter 11

11. Sensors

Sensors are used to detect one of the following:

• Time passing.

• Pointer device events.

Sensors are often implemented to perform one of the following tasks:

• Trigger an engine at a speciﬁed interval (csTimeSensor).

This task is most commonly used to animate geometries.

• Generate rotations based on pointer device events (csSphereSensor).

• Generate translations based on pointer device events (csPlaneSensor).

• Determine whether the pointer device cursor is over a geometry (csTouchSensor).

This chapter explains how to implement sensors in the following sections:

•“csTimeSensor” on page 122.

•“csSphereSensor” on page 126.

•“csPlaneSensor” on page 130.

•“csTouchSensor” on page 134.