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Surface Edit > Global Deformation

Deforms multiple NURBS surfaces while maintaining surface continuity.

Previous: Surface Edit > Claymate

From

The center of the deformation region before the deformation takes place.

To

The center of the deformation region after the deformation takes place.

Offset

The distance between the From point and the To point.

Vol Size

The size of the deformation region. The maximum deformation will occur at the center of the deformation region. No deformation will occur at the edges of the deformation region.

For example, the deformation of the following plane is very different when the deformation region is scaled horizontally beyond the edges of the plane.

Rotation

The rotation of the deformation region.

Shade Vol

Displays the deformation region as a shaded cube.

Undo Depth

The number of subsequent global deformations you can undo by choosing Edit > Undo. You may want to adjust this value based on the amount of memory your computer has (for example, set it to 2 if your computer has very little memory, or set it to 25 if your computer has a large amount of memory.) The default value is 10.

To globally deform surfaces

1  Select the surfaces you want to consider in the deformation. That is, select the surfaces you want to deform and any nearby surfaces that you want to remain continuous after the deformation.



Note

Only surfaces within the deformation region will actually be deformed (see step 5 below).

2  Choose the Global Deformation icon from the Surface Edit palette (or choose Global Deformation from the Surface Edit palette menu).



3  Click a point in space or on the surface to set the center of the deformation region before the deformation takes place. This is referred to as the From point.

A yellow cube appears, indicating the deformation region.



You can adjust the position of the From point by dragging it.

4  Click a point in space or on the surface to set the center of the deformation region after the deformation takes place. This is referred to as the To point.

A yellow line appears, connecting the From point and the To point.



You can adjust the position of the To point by dragging it.

5  To adjust the size and shape of the deformation region, click the Volume button and use the manipulator to scale the deformation region.



All surfaces that you want to deform should be within the deformation region.

Note

The maximum deformation will occur at the center of the deformation region. No deformation will occur at the edges of the deformation region.

6  To adjust the position of the From point, click the From button and drag in the window.

To adjust the position of the To point, click the To button and drag in the window.

7  To select or deselect the surfaces that you want to consider in the deformation, hold down the Shift key and click them.

8  Click Go to deform the surface(s).



• If you do not like the deformation, with the tool still active select Edit > Undo and then adjust the From point, To point, and deformation region.
  
  If you select another tool, you will not be able to undo the deformation.
• If you continue to adjust the From point, To point, and deformation region (and click Go), subsequent deformations will be added onto the original deformation.

Tips and notes

• Using the Global deformation tool is an iterative process. You will likely need to perform several test deformations before you achieve the desired results.
• To precisely position the From and To points and scale and size the deformation region, open the Global Deformation Options box and set the appropriate values.
• The Global deformation tool is best for making very small deformations.
• When using the Global deformation tool, hold down the Shift key and click a surface to select or deselect it.

Next: Surface Edit > Fit scan

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