center specifies the 3-D coordinate at the center of a sensed region. |
size field defines the dimensions of a sensor's box-shaped region a width, a height, and a depth measured along the X, Y, and Z axes of the current coordinate system. |
isActive eventOut flags whether any part of sensed region is consrained within the viewing-volume frustrum. |
enabled field enables and disables the VisibilitySensor. |
enterTime event is generated whenever the isActive TRUE event is generated. |
exitTime events are generated whenever isActive FALSE events are generated. |