Mesh quality parameters

Quality defines the mesh density, which determines visual quality.

Asset Transformer Toolkit uses these processes:

  • If you import a CAD model (exact geometry), Asset Transformer Toolkit runs a tessellation.
  • If you import a Mesh model (tessellated geometry), Asset Transformer Toolkit runs a decimation.
  • Asset Transformer Toolkit runs other processes to optimize the quality of the imported model.
Note

See CAD vs Mesh to better understand the difference between CAD and Mesh models.

Set Quality to the quality level for the imported model. Select a predefined preset or choose custom parameters for the Maximum Sag, and the Sag ratio for CAD models.

For CAD models, Asset Transformer Toolkit multiplies the length of the diagonal of the bounding box by the Sag ratio. If the output value is above the max Sag, then the max Sag is used as the tessellation value. Otherwise, if the output value is below the max Sag, it is used as the tessellation value.

Quality preset CAD model Mesh Model
Maximum Delivers a very dense and precise mesh. Quality is prioritized over low density.
  • Maximum Sag: 0.01mm
  • Sag ratio: 0.0001
 Entirely preserves the imported model (no decimation).
High Delivers a superior quality mesh. This preset provides high-quality results for small objects.
  • Maximum Sag: 0.1mm
  • Sag ratio: 0.0002
 The imported mesh is slightly optimized through a light decimation, preserving smoothing (through surfacic and normal controls) and UVs.
  • Surfacic tolerance: 0.5mm
  • Lineic tolerance: 0.1mm
  • Normal tolerance: 1°
Medium Delivers a balanced mesh between quality and the polygon count.
  • Maximum Sag: 0.2mm
  • Sag ratio: 0.0003
 The imported mesh is optimized through controlled and efficient decimation, preserving smoothing and UVs. The resulting mesh might show smoothing irregularities.
  • Surfacic tolerance: 1mm
  • Normal tolerance: 8°
Low Delivers a low-density mesh. Select this option to process large objects while limiting the polygon count.
  • Maximum Sag: 1mm
  • Sag ratio: 0.001
 The imported mesh is optimized through controlled and efficient decimation. The resulting mesh might show smoothing and topological irregularities.
  • Surfacic tolerance: 3mm
  • Normal tolerance: 15°
Poor Delivers a very low-density mesh. Select this option to process large objects while strongly limiting the polygon count.
  • Maximum Sag: 3mm
  • Sag ratio: 0.01
 The imported mesh is optimized through strong decimation. The resulting mesh shows smoothing and topological irregularities, which may be suitable for LODs.
  • Surfacic tolerance: 10mm
  • Normal tolerance: 20°
Custom Choose the max Sag and the Sag ratio. From the Edit menu, choose Project Settings > Asset Transformer Toolkit and select a value. Not applicable.
This option is available only for tessellation of CAD models. If required, use the Toolbox to customize the decimation level after you have imported a model at maximum quality.

Additional resources