ScalarInterpolator node

ScalarInterpolator {
  SFFloat set_fraction 0
  SFFloat value_changed 0 0
  MFFloat key []
  MFFloat keyValue []
}

This interpolator is used to interpolate scalar values. It should work exactly as defined in VRML.

See Interpolators for a detailed explanation on how interpolators work and when to use them.

SFFloat set_fraction 0 : Value usaly routed from the TimeSensor.fraction_changed field. See Interpolators.

SFFloat value_changed 0 0 : When a new float value is computed form the ScalarInterpolator, it is sent to the value_changed field.

MFFloat key [] : List of float values between 0 and 1. See Interpolators.

MFFloat keyValue [] : Contains a float value for each value of the key list.

#VRML V2.0 utf8
Shape {
  appearance Appearance {
     material DEF CURSOR_MAT Material2D { emissiveColor IS textColor }
  }
  geometry Rectangle { size 2 10 }
}
# to make the cursor blink
DEF CURSOR_TIMER TimeSensor { cycleInterval 1 startTime 0 loop TRUE }
DEF CURSOR_COLOR ScalarInterpolator { #to make the cursor of a textfield transparent or not gradually to feel it blinks
  key [ 0 0.3 0.6 1 ]
  keyValue [0 1 1 0 ]
}
ROUTE CURSOR_TIMER.fraction_changed TO CURSOR_COLOR.set_fraction
ROUTE CURSOR_COLOR.value_changed TO CURSOR_MAT.transparency