User Manual

Table Of Contents
Replace Normals 3D [3RPN]
The ReplaceNormals node
Replace Normals Node Introduction
In 3D modeling, normals are vectors used to determine the direction light reflects off surfaces.
The Replace Normals node is used to replace the normals/tangents on incoming geometry,
effectively adjusting the surface of an object between smooth and flat. All geometry connected
to the scene input on the node is affected. Lights/Cameras/PointClouds/Locators/Materials, and
other non-mesh nodes are passed through unaffected. The normals/tangents affected by this
node are Per-vertex normals/tangents, not Per-face normals/tangents. The input geometry must
have texture coordinates in order for tangents to be computed. Sometimes geometry does not
have texture coordinates, or the texture coordinates were set to All by the FBX import because
they were not present on the FBX.
Inputs
The Replace Normals node has a single input for the 3D scene or incoming geometry.
SceneInput: The orange scene input accepts a 3D scene or 3D geometry that
contains the normal coordinates you want to modify.
Basic Node Setup
The Replace Normals 3D node is inserted directly after the 3D object or scene whose normals
you want to modify. Below, it is used to smooth the material on an imported 3D model.
Replace Normals 3D used to smooth normals on 3D geometry
Chapter – 80 3D Nodes 1702