Reference: Proximity Sensors
vizproximity introduction
Use the vizproximity library to check
for proximity between Vizard objects and trigger events based on proximity.
There are three classes that form the foundation of this library; Sensor, Target,
and Manager. A sensor object detects when
a target is within its range. Sensor and target positions are based on
a source object which can be a node, view, tracker, bone, matrix, or any
other linkable object. A
Manager object manages a collection of sensors
and targets and automatically triggers events when a target enters/exits
a sensor range. The following example code creates a sensor around an
avatar who begins talking when the user moves near and stops talking when
the user moves away. Press the 'd' key to toggle the sensor shape debugger:
import viz
import vizact
import vizproximity
viz.setMultiSample(4)
viz.fov(60)
viz.go()
dojo = viz.addChild('dojo.osgb')
#Create proximity manager
manager = vizproximity.Manager()
manager.setDebug(viz.ON)
#Add main viewpoint as proximity target
target = vizproximity.Target(viz.MainView)
manager.addTarget(target)
#Create sensor using male avatar
avatar = viz.addAvatar('vcc_male2.cfg',pos=[0,0,4],euler=[180,0,0])
avatar.state(1)
sensor = vizproximity.addBoundingSphereSensor(avatar,scale=2)
manager.addSensor(sensor)
#Change state of avatar to talking when the user gets near
def EnterProximity(e):
avatar.state(4)
#Change state of avatar to idle when the user moves away
def ExitProximity(e):
avatar.state(1)
manager.onEnter(sensor,EnterProximity)
manager.onExit(sensor,ExitProximity)
vizact.onkeydown('d',manager.setDebug,viz.TOGGLE)
