Projecting External Curves

This task shows you how to project external curves to constrain them.

• Open the Sample28.CATAnalysis document from the samples directory.

• Enter the Surface Mesher workshop.
  For more details, refer to Entering the Surface Mesher Workshop.

1. Click Project External Curve in the Local Specifications toolbar.

   The External Curve Constraint dialog box appears: Support: lets you select the curves you want to project. Multi-selection of curves is available. Geometry Selector button : for more details, refer to Filtering Geometries. Tolerance: lets you specify the tolerance value.   The Tools Palette toolbar also appears.

2. Select one or several geometric curves as Support.

   In this particular example, select Geometrical Set.1 in the specification tree.

3. Enter a Tolerance value.

4. Click OK.

   A Projected Curve.1 object belonging to Geometry Specifications.1 appears in the specification tree under the Surface Mesh.1 mesh part. The selected curves are now yellow-highlighted and the points at the intersection of constrained curves are red-highlighted. They are constrained. If the projected curve encounters boundary edges (for example the edge of a hole), the projected curve is going through the boundary edges. In the following example, the red line is selected to be projected. The resulting projected curve is split into three curves:

5. Click Mesh the Part to launch the mesh execution.

6. Click OK in the Mesh the Part dialog box.