Normal
3D Mask - Vertices are selected depending on their normal orientation
    This mask can be very effective to do Fresnel effects and some shader setups.
Variables:
- Referential: Referential of the normal
 - Direction: Direction of the normal
 - Orientation: Orientation of the normal
 - Spread: Spread of the normal
 - Exponent: Exponent of the normal
 
Python
    Oil.createObject("NormalGeometryMask")