The tessellation step is the entry point to the polygonal representation which permits to display the model when coming from a CAD file.

This step is very important for the final quality of the model.

Here are some examples and advices on the use of tessellation parameters:

• Reduce the « max Sag » value make the mesh less rough and more realistic.

• Adjust the « max Angle » parameter keep enough polygons in high curvature areas whose radius is lower than the « max Sag » value : fillets and chamfers for example.

In the above example, the « max Angle » parameter has improved fillets precision by adding a row of elements without increasing polygons number of the yellow piece contour.

• For a rendering usage, we don’t advice to use the « max Lengh » parameter. This parameter inscreases the polygons count without improving the visual aspect.