These utility classes do not rely on using the standard Java 3D behaviour mechanism to operate. They can operate on a standalone basis with user code setting fraction values and getting information back.

Interpolators act as either a linear mechanism or step mechanism. When working as a linear system it calculates the values relative to the proportion between the keys in a linear fashion. Step interpolation holds the previous key value until the next key value is reached. At the point the key is reached, the output value jumps to the next keyValue.