Tessellating an Object

• Multi-selection of input elements is available.
• Elements can be selected in the specification tree or in the 3D viewer.
• In a Part context, you can select:
  • A Geometrical Set: All visible surfaces are selected.
  • An Ordered Geometrical Set: All visible surfaces are selected.
  • A Body or a Partbody: The solid associated is selected, if it is visible.
  • A hybrid body: All visible surfaces are selected, as well as the associated solid, if it is visible.
  • The part itself, according to the rules above.
• In a Product context, you can select the product, according to the rules above. Note that:
  • Transformations may be applied to create the mesh in the coordinate system of the active part.
  • Surface Tessellation is not compatible with the cache system.
  • Surface Tessellation applies only to loaded referenced documents.
• You can specify the maximum size of the triangles and the maximum distance (sag) between the geometry and the triangles.
• You can choose to create Distinct or Grouped tessellations.
• Note that selecting an element and selecting the components of the element lead to different results. For example, 
  • If you select a join made of 5 surfaces, you will create one mono-cell tessellation, with both the Distinct and the Grouped option.
  • If you select the 5 surfaces of the join, you will create 5 tessellations with the Distinct option, and one 5-cell tessellation with the Grouped option.
• The free edges of the tessellation are those of the surfaces or solids.
• To avoid free edges between the tessellations of several contiguous faces.
• You can join them with the Join action of Quick Surface Reconstruction or Generative Shape Design.
  They will then be processed as a single surface.

For a better understanding, we show you the output tessellations in Triangles mode.

1. Click Tessellation . The Tessellation dialog box is displayed.
   

2. Select the surfaces. Click Apply.
   

3. You can modify the Sag value,
   that is the maximum distance between the geometry and the triangles:
   
   it has been increased to 1

4. You can also select the Step check box to control the length of triangles:
   

5. Select an output option:

   • Distinct will create separate tessellations, i.e. one tessellation for each input element. The names of the tessellations contain the names of the input elements.

   • Grouped will create one multi-cell tessellation, named Tesselation.x. The number of cells corresponds to the number of input elements.

6. Click OK to validate and exit the dialog box.