void Init()
{
CurveField field = new CurveField()
{
value = config.value != null ? (AnimationCurve)config.value : new AnimationCurve(),
};
field.RegisterCallback <ChangeEvent <AnimationCurve> >(evt => {
config.OnValueChanged(evt.newValue);
MarkDirtyRepaint();
});
Add(field);
}
