Adjusting Tessellation Precision

Through trial and error, we've determined a default tessellation precision we apply as we process CAD in the  CAD CLNR. However, it might not be right for you. If you notice that models take too long to process in the CAD CLNR or too long to load on Zea, consider adjusting the tessellation precision of your models when you process them.

The tessellation precision value represents the largest deviation from the parametric model (the 3D CAD file). So a large tessellation value represents a large deviation or a very simplified model. A small value will create a much more detailed model. More detailed models have more triangles that make up their visualization mesh. There is a trade-off between visual quality and performance.

Find and process one of the smallest 3D models in your dataset, like a screw, and adjust the precision to get the quality you're looking for. We recommend testing with the smallest model because tessellation will be most noticeable on the smallest CAD files. You should target the highest acceptable precision (tessellation value) possible.

  1. Open the CAD CLNR settings
  2. Select the Advanced menu
  3. Begin adjusting tessellation precision based on the following guidelines and fine-tune based on your experience:
  • Big models: above 4 meters along the longest axis (width, length, or height)
    • Example: Mining equipment
    • Recommended tessellation precision: 2
  • Medium-sized model: 2 to 4 meters along the longest axis
    • Example: Trailer
    • Recommended tessellation precision: 0.2
  • Small: half a meter to 2 meters along the longest axis
    • Example: Lawnmower
    • Recommended tessellation precision: 0.05
  • Tiny: under half a meter
    • Example: Toaster
    • Recommended tessellation precision: 0.02

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