The Field nodes are essentially 3D gradients that can be used to control the output value of many different data/node types in Octane (figure 1).


Fields

Figure 1: The four field types used in conjunction with a 4-color gradient map

 

The four field types available are:

  • Angular - Similar to the angular gradient but has additional options to map the angle to the gradient value
  • Planar - Similar to the linear gradient but with a finite mapping
  • Shape - Maps the distance between Vectron/SDF objects
  • Spherical - Maps the distance of the origin in UVW space to a (clamped) gradient value


The node layout in figure 2 represents the node layout for the Shape example from figure 1. 


Shape Node Graph Layout

Figure 2: A node layout for using the Shape Field