XForm Modifier

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Modify panel > Make a selection. > Modifier List > Object-Space Modifiers > XForm

Make a selection. > Modifiers menu > Parametric Deformers > XForm

Use the XForm (short for Transform) modifier to apply transformations (Move, Rotate, Scale) to objects. The XForm modifier's primary function is to transform an object at any point in the stack.

Using XForm

XForm provides a gizmo and center for any geometry it receives from the stack whether it's a sub-object selection or the whole object. XForm has no parameters. When you move the XForm modifier gizmo, the center moves with it, along with the geometry.

You can reposition the XForm center separately from the gizmo.

Offsetting XForm Center

At the XForm Center sub-object selection level, only the Move transform is available. This lets you reposition the center. When you return to the Gizmo level, you can rotate or scale the selection around the offset center.

Scaling with XForm

When you scale an object with a toolbar Scale tool, the software applies the effect to the object after all the modifiers in the stack. In some cases you might want to squash or stretch an object before applying geometric or edit modifiers. XForm makes this possible.

By applying XForm and scaling its gizmo, you can place the scaling operation anywhere in the stack.

Procedures

To use the XForm modifier:

Choose a location in an object's stack and apply the XForm modifier.

The Gizmo sub-object level is automatically activated. All transform buttons are available on the toolbar.
Transform the gizmo.

As you transform the gizmo, the selected geometry is transformed with it.

To use XForm as a scaling modifier:

Apply XForm to an object or a sub-object selection.
Scale the gizmo.

The rescaled geometry becomes "part of the stack" because the scale transform is carried with XForm, instead of being applied after the modifiers.

Interface

This modifier has no parameters, but you can transform the XForm gizmo and the XForm center. If you switch the selection level to the XForm center, only the Move transform is available. This lets you offset the center and transform the gizmo around it.