The ProxSensor rollout lets you set up a rectangular region in space, so that entering the region in a VRML 2.0 browser starts a set of objects animating.
The ProxSensor rollout contains the following options:
Length/Width/Height: Specifies the dimensions of the bounding box that triggers the action.
Enable: Activates the Proximity Sensor. When this box is clear, the sensor has no effect, even if objects have been selected.
Pick Action Objects: Specifies the objects in the scene to control with this helper. The objects can be animated geometry, cameras, or AudioClips. Click this button then click the objects.
Delete: Deletes an object from the list of picked objects.
When the user navigates inside the box, the geometry or camera animates or the sound plays.