#VRML V2.0 utf8
#
#
#[return]
#
#ex-visibilitysensor.wrl
# example of VisibilitySensor node
# Leo - 11-Sept-97
# in this example when the white cube can be seen (that means the defined
# visibility region can be seen by the viewer) the Sensor will send the
# isActive=TRUE and the interpolate will work. Otherwise isActive=FALSE
# will inhibit the interpolator operation
#
# REMEMBER : use the cursor to change the viewer position and achieve
# the desired effect
#########
# viewer initial position
Viewpoint {position 0 0 15}
DEF VISensor VisibilitySensor {
center 0 0 0
size 1 1 1
enabled TRUE
}
# rest / move cube
DEF XBox Transform {
translation -5 -5 0
rotation 1 1 0 -.7
children [
Shape {
geometry Box {
size 1 1 1
}
appearance Appearance {
material Material { diffuseColor 0 1 0
# specularColor 0 1 0
}
}
}
]
}
# "image" of the sensitive region
Shape {
geometry Box {
size 1 1 1
}
}
# Timer
# parameter loop = TRUE will be set by the VisibilitySensor
DEF TIMER TimeSensor {
cycleInterval 7
}
# Trajectory for the green box
DEF INTERP PositionInterpolator {
key [0, 0.0833, 0.167, 0.25, 0.333, 0.417, 0.5, 0.583,
0.667, 0.75, 0.833, 0.917, 1]
keyValue[-5 -5 0, -5 -4 0, -5 -3 0, -5 -2 0, -5 -1 0, -5 0 0,
-5 1 0, -5 2 0, -5 3 0, -5 4 0, -5 3 0, -5 2 0,
-5 -5 0] }
# initialize green box translation movement
ROUTE VISensor.isActive TO TIMER.set_loop
ROUTE TIMER.fraction_changed TO INTERP.set_fraction
ROUTE INTERP.value_changed TO XBox.set_translation
#