CoordinateInterpolator node

CoordinateInterpolator {
  SFFloat set_fraction 0
  MFVec3f value_changed []
  MFFloat key []
  MFVec3f keyValue []
}

This interpolator is used to interpolate arrays of 3D coordinates.
See Interpolators for a detailed explanation on how interpolators work and when to use them.

Note:
The CoordinateInterpolator outputs MFVec3f values to the value_changed field, you might want to look at the PositionInterpolator if you want SFVec3f 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.

MFVec3f value_changed []:
When a new array of coordinates is computed from the CoordinateInterpolator, it is sent to the value_changed field.

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

MFVec3f keyValue []:
Contains arrays of coordinates for each value of the key list.

#VRML V2.0 utf8

DEF TIMER TimeSensor {
    cycleInterval 2  # durée de deux secondes
    startTime 1 # stopTime implicite à 1+2 = 3
}
DEF INTERP PositionInterpolator2D {
    key [ 0, 0.5, 1 ]  # début, milieu et fin d’animation
    keyValue [ -50 -100, -100 100, 50 100 ] # trois 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