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## shout3d.core
Interface FieldObserver

All Known Implementing Classes:
  Bindable, JSFieldObserver, PointSet, Switch, Viewpoint, OrientationInterpolator, IndexedFaceSet, IndexedLineSet, ImageTexture, Appearance, Transform, JavaSound

public abstract interface FieldObserver

An interface which implements a callback when a field changes value

Method Summary
`void` | `onFieldChange(Field theField, java.lang.Object userData)` This method should be called when the field's value changes.

Method Detail

### onFieldChange

    public void onFieldChange(Field theField,
                              java.lang.Object userData)

  This method should be called when the field's value changes. The userData is the same data that was passed from this FieldObserver to the observed field in field.addFieldObserver(this,userData)
  Parameters:
    `field` - the field being observed
    `userData` - data used by this FieldObserver

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