Houdini 20.5 Nodes Copernicus nodes

UV Transform Copernicus node

Transforms the values of a UV layer in 2d space.

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This operation treats the UV values as XY locations in space. These positions are then transformed by this transform, and become the new UV values.

Note this does not move pixels around - each pixel operates in place.

Parameters

Transform

Pivot

The local pivot space’s translation value for transformations.

Translate

The amount to translate the UV coordinates by.

Rotate

Rotation of the UV coordinates by this number of degrees.

Uniform Scale

A uniform scale of the UV coordinates.

Scale

A non-uniform scale of the UV coordinates.

Randomize

Each pixel can get its own randomized transform. This allows a group of islands created with UV Map by ID to be individually transformed.

Offset

The transform is offset by a random amount in plus or minus this value.

Rotation

The transform is rotated by a random number of degrees in plus or minus this value.

Uniform Scaling

The random scale computed will be uniform in both axes.

Uniform Scale Min

The randomly generated scale will be this scale or higher.

Uniform Scale Max

The randomly generated scale will be this scale or lower.

Scale Min

The randomly generated scale will be this scale or higher.

Scale Max

The randomly generated scale will be this scale or lower.

Seed

Additional random number seed mixed in with the provided seed layer.

Inputs

uv

UV layer containing image or texture coordinates to transform. The pixels are not moved, just the values they represent.

uvscale

A Mono layer storing the filter scale of the original layer. This will then be concatenated with these transforms, allowing eventual use of UV Sample to use the proper filter width.

seed

An ID layer storing a random seed to use for the randomization. Using the same ID for an island ensures that all of the island uses the same random transform.

Outputs

uv

The UV layer transformed in place.

uvscale

The cumulative scaling applied by the transform, allowing UV Sample to properly filter original images.

See also

Copernicus nodes