Adding/Removing Constraints (Modifications)

This task shows how to apply manual topological modifications on existing constraints. There are two types of constraints.

a constraint applied to a vertex: as a result, a node will be created on this vertex.
a constraint applied to a curve: as a result, all the element edges will be aligned on this curve.

You can add or remove constraints using the following contextual menus:

Open the sample05.CATAnalysis document from the samples directory.

Enter the Advanced Surface Mesher workshop.
For more details, refer to Entering the Advanced Surface Mesher Workshop.
Launch the geometrical simplification.
For more details, refer to Simplifying the Geometry.

Click Edit Simplification in the Edition Tools toolbar.

The Edit Simplification dialog box appears with one option for re-meshing automatically as you modify the geometrical simplification.

The Undo command is not available.

Right-click the elements required for modifying edges, vertices or still for performing split, collapse or merge operations.

Select the desired options from the available contextual menu.

For edges:
For vertices:

The desired option (contextual menu), once selected, remains active. You then simply need to select the elements to be modified.

Click OK.

Swap constrained state

If you right-click on this part:

You get this constrained state edge:

Split a domain

If you right-click on two existing vertices:

You get this split domain:

You can chain the orthogonal split while the contextual menu is selected and the Edit Simplification dialog box is displayed.

Orthogonal Split on Domain

If you right-click on an edge and click an other edge:

You get this orthogonal split domain:

Orthogonal split allows you to create a split domain using an orthogonal projection of a vertex on an edge.
You can chain the orthogonal split while the contextual menu is selected and the Edit Simplification dialog box is displayed.