Dateline: 10/04/00
Toggle light on and then off.
When last we left out intrepid widget builder we had a perfectly good toggle behavior.
The visuals were really crap, so let's improve it a bit. Our goal is to create an actual
physical switch that animates up and down just like a real light switch.
First we need to create the physical geometry, then we need to animate it, and finally we
need to connect up that geometry with the toggle behavior. First the geometry.
The Geometry
DEF BOXGEOM Transform {
translation 0 0 -4
scale 1 1 1
children [
DEF ELMO TouchSensor {}
Shape {
appearance Appearance {
material DEF WHITE Material {
diffuseColor 1 1 1
}
}
geometry Box { size 0.4 2.0 0.2}
}
]
}
Now we animate it. To animate we set up a TimeSensor that controls
an OrientationInterpolator. Following is the code fragment plus the
ROUTEs.
DEF CLOCK TimeSensor {
cycleInterval 1.5
startTime -1
loop FALSE
enabled TRUE
}
DEF ROTATOR OrientationInterpolator {
key [ 0.0, 0.50, 1.0 ]
keyValue [
1 0 0 0.4,
1 0 0 1.4,
1 0 0 2.5
]
}
ROUTE ToggleScript.value_changed TO CLOCK.enabled
ROUTE ELMO.touchTime TO CLOCK.set_startTime
ROUTE CLOCK.fraction_changed TO ROTATOR.set_fraction
ROUTE ROTATOR.value_changed TO BOXGEOM.set_rotation
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