Soft Transform

The SoftTransform command changes moving behavior of mesh and SubD vertices based on different radial falloff shapes.

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Soft transform works with SubD/mesh vertices, edges, faces, and control points.

Mouse dragging, Gumball, and transform commands (Move, Scale, Rotate...) work with soft transform.

Locked SubD vertices, edges, and faces will stay still.

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Command-line options

Enable (Yes/No)

Turns on/off soft transform for SubD and mesh vertices.

Radius

Defines the falloff range.

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Pre-select SubD/mesh sub-objects to define the falloff range with a visual indicator.

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Shape (Smooth /Linear/ Round/ Sharp)

Changes the radial falloff style.

Linear	Smooth
Sharp	Round

For more information, please refer to the Rhino documentation.