The Polygon Side node assigns black or white values based on a Polygon object's normal direction. This is useful for assigning different Textures or Materials to different sides of a Polygon object.
Figure 1: A Polygon Side node controls the Mix texture node and the blending amount of green and red RGB Color nodes
Figure 2: Diffuse materialUsed for dull, non-reflecting materials or mesh emitters. parameters
The result connects to the OctaneRender® material's DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. channel, which applies to a twisted polygon.
Figure 3: A twisted surface with a red texture mapped to one side of the polygon and a green texture mapped to the other