Normal defines a set of 3D surface-normal vectors that apply either to a sibling Coordinate/CoordinateDouble node, or else to a parent ElevationGrid node. Normal values are perpendicular directions that are used per-polygon or per-vertex when computing lighting and shading.
The Normal node belongs to the Rendering component and its container field is normal. It is available since X3D version 3.0 or later.
SFNode [in, out] metadata NULL [X3DMetadataObject]
Metadata are not part of the X3D world and not interpreted by the X3D browser, but they can be accessed via the ECMAScript interface.
MFVec3f [in, out] vector [ ] [-1,1]
Set of unit-length normal vectors, corresponding to indexed polygons or vertices.