Houdini 21.0 Nodes Copernicus nodes

Position Map Copernicus node

Generates a position map.

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This node generates a position map, which is an RGB layer where each pixel represents a location in 3D space. You can use a position map as the reference location for noises, such as Fractal Noise 3D.

The X Border, Y Border, and Z Border parameters let you control how to map values outside the canonical 3D shape, which is a cube with sides of size 2. This allows for the formation of periodic values. See Border types for more information.

Parameters

Source Position

What location to use as the source position for a pixel.

Position

The pixels location in world space is used.

Camera Origin

The origin of the layer’s camera in world space is used. Note this varies per pixel for othographic cameras.

View Direction

The view direction for the pixel, a normalized vector pointing away from the camera origin.

X Border

The method used to map values outside the cube.

Clamp

Clamp to the nearest side of the cube.

Mirror

Reflect about the boundary of the cube.

Wrap

Take the value of the opposite side of the cube.

Extend

Unaffected by the cube.

X Shift

An additive adjustment prior to the border correction.

X Cycles

The scale applied prior to the border correction. When X Border is Wrap, this value effectively becomes a cycle-count.

Y Border

The method used to map values outside the cube.

Clamp

Clamp to the nearest side of the cube.

Mirror

Reflect about the boundary of the cube.

Wrap

Take the value of the opposite side of the cube.

Extend

Unaffected by the cube.

Y Shift

An additive adjustment prior to the border correction.

Y Cycles

The scale applied prior to the border correction. When Y Border is Wrap, this value effectively becomes a cycle-count.

Z Border

The method used to map values outside the cube.

Clamp

Clamp to the nearest side of the cube.

Mirror

Reflect about the boundary of the cube.

Wrap

Take the value of the opposite side of the cube.

Extend

Unaffected by the cube.

Z Shift

An additive adjustment prior to the border correction.

Z Cycles

The scale applied prior to the border correction. When Z Border is Wrap, this value effectively becomes a cycle-count.

Inputs

size_ref

A representative layer that determines the size of the output image and controls the metadata.

Outputs

pos

The RGB layer or Vector vDB that provides the 3D coordinates of each pixel.

See also

Copernicus nodes