Surfacing > Scan Tools > Surface and Curve Manipulation > Modifying Curves > To Define the Poly Motion Region for a Curve
To Define the Poly Motion Region for a Curve
Defining the Poly Motion Region for a curve lets you specify the following:
The rule for modifying the curve
Boundaries of the region where the curve can move
To define the Poly Motion Region:
1. Click Edit > Modify in Scan Tools.
2. Select a curve. The Modify Curve dialog box opens.
3. Click Region on the Modify Curve dialog box. The Region section opens in the Modify Curve dialog box.
4. Select one of the following from the list:
Local—Moves the selected point only.
Smooth Region—Applies the movement of the point to all points in the specified region by a cubic law.
Linear Region—Applies the movement of the point to all points in the specified region by a linear law.
Constant Region—Moves all the points included in the specified region by the same distance.
5. For Smooth Region, Linear Region, or Constant Region, you can optionally select the boundaries of the region. Click the Region check box and select two points on the curve.
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The default region is Smooth and is applied to the whole curve.