Houdini 16.5 Nodes VOP nodes

Lambert VOP node

Generates a color using the Lambert diffuse lighting model calculation.

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This VOP uses the Lambert lighting model calculation to generate the diffuse color contribution for a material. Typically its color is the main surface color of the material. This lighting model is often used as base for materials where specular is added.

Inputs

nN

The normal vector is used in the Lambert diffuse calculation.

nI

The incidence direction ray used in the face forward calculation.

Kd

The diffuse intensity.

diff

The diffuse color. This color is most often the main surface color of the material.

facefwd

This toggle will change the normal to face forward towards the camera.

Outputs

color

The Lambert diffuse color contribution:

Kd * diff * diffuse(nN)

illum

Just Lambert diffuse lighting without the multiplication by the diffuse

bsdf

The PBR diffuse calculation.

See also

VOP nodes