Extending Surfaces

You can make a surface bigger or smaller by extending its boundaries.

Two extension modes are available: Extension according to the existing parameters of the surface and extension taking the curvature continuity into account and adding segments to the initial surface.

Before you begin: Open an existing 3D shape containing surfaces.
  1. Select a surface boundary.
  2. From the Modify section of the action bar click Extend .
  3. Use the handles to extend the surface on both sides.
    • Keep segmentation selected: The surface is extended according to its initial parameterization.

    • Keep segmentation cleared: The surface is extended taking the curvature continuity into account. This means that segments are added to the initial surface.

      Note: When Keep segmentation is cleared, the surface can only be extended and not shortened.

    The surface is updated when you release the mouse.





  4. Click OK.
  5. Right-click a handle and select Edit to define an extension step value.
  6. Shift+click the handle.
    The surface is extended by the set step value.