CoordinateInterpolator2D node

CoordinateInterpolator2D {
  SFFloat set_fraction 0
  MFVec2f value_changed []
  MFFloat key []
  MFVec2f keyValue []
}

This interpolator is used to interpolate arrays of 2D coordinates.
See Interpolators for a detailed explanation on how interpolators work and when to use them.

Note:
The CoordinateInterpolator2D outputs MFVec2f values to the value_changed field, you might want to look at the PositionInterpolator2D if you want SFVec2f values.

SFFloat set_fraction 0:
Change this set_fraction field (between 0 to 1) to make the interpolator compute a new value.
Value usually routed from the TimeSensor.fraction_changed field. See Interpolators.

MFVec2f value_changed []:
When a new array of coordinates is computed from the CoordinateInterpolator2D, it is sent to the value_changed field.

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

MFVec2f keyValue []:
Contains arrays of coordinates for each value of the key list.

#VRML V2.0 utf8

DEF TIMER TimeSensor {
    cycleInterval 2  # two seconds
    startTime 1 # timer starts at one sec after application launch, implicit stopTime set to 1+2 = 3 seconds after application launch

}
DEF INTERP PositionInterpolator2D {
    key [ 0, 0.5, 1 ]  # begin, middle and end of animation
    keyValue [ -50 -100, -100 100, 50 100 ] # three positions
}
DEF TRS Transform2D {
    children [
        Shape {
            appearance Appearance {
                material Material2D { emissiveColor 1 0.4 0 }
            }
            geometry Rectangle { size 50 50 }
        }
    ]
}
ROUTE TIMER.fraction_changed TO INTERP.set_fraction
ROUTE INTERP.value_changed TO TRS.translation

CoordinateInterpolator2D example