Projecting Curves

You can project a curve onto a surface.

Before you begin: Open an existing 3D shape.
  1. Select a curve.
  2. From the Creation section of the action bar, click Project Curve .
  3. Select the projection orientation.
  4. Ctrl+ select the surface or set of surfaces onto which you want to project the curve.
    • Projection according to the Robot orientation.

    • Projection normal to the surface.

    The projected curves are Splines lying on the surface. The converter wizard is automatically used to process the resulting curve. It generates either a 2D NUPBS (Non Uniform Polynomial B-Spline) curve identified by the Exact text, or a 3D NUPBS curve (identified by Cv text).

    If you want to further control the projected curve, right-click the displayed text and choose the Edit context menu. The converter wizard is then explicitly launched.

    For example, in the case of a 2D curve, you may want to generate a single segment curve. Select both Segmentation and Single in the Converter Wizard, then click OK.

  5. Click OK to create the projected curve.
    Notes:
    • When you project a curve on two surfaces, there may be no tangency continuity.
    • Click Furtive Display in the App Options panel to see the control points of the projected curve.

    • Select Display Information in the Converter Wizard dialog box to view the order and number of segments of the projected curve.
    • The element's topology (for example a relimited curve or surface) is taken into account for the projection.
    • Multiselection of curves is allowed.
    • Multicell curves can be selected: the resulting projected curve is also a multi-cell curve.