Fields

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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).

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

The four field types available are:

• Angular

• Planar

• Shape

• Spherical

Angular

Similar to the angular gradient but has additional options to map the angle to the gradient value.

angular field

Falloff Angles X & Y

Angular distance at which the value falls down to zero, for each side of the core sector.

Core Angle

Angular range of the core sector in which the value is one.

Planar

Similar to the linear gradient but with a finite mapping.

planar field

Falloff Distance

Distance from the plane at which the value falls down to zero.

Shape

Maps the distance between Vectron/SDF objects.

shape field

Shape Input

Signed distance field representing the shape inside which the value is one.

Falloff Distance

Distance at which the value falls down to zero.

Offset

Offset applied to the core shape surface at which the value starts falling off from one.

Spherical

Maps the distance of the origin in UVW space to a (clamped) gradient value.

spherical field

Falloff Radius

Radius at which the value falls down to zero.

Core Radius

Radius of the spherical core in which the value is one.