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Asset Transformer SDK

Retopologize meshes

Generates a simplified mesh from selected occurrences. Commonly used in retopology workflows to create clean, optimized geometry for further processing such as baking materials or generating LODs.
Read time 1 minuteLast updated 4 months ago
API function: algo.retopologize Use this feature to create a lightweight representation of a complex mesh by reducing the polygon count. This feature is suitable for colliders, levels of detail (LODs), and devices with limited graphics power.

The algorithm

This algorithm is based on Instant Field-Aligned Meshes. It will produce a new mesh, containing either only quadrangles (if pureQuad is checked) or triangles and quadrangles. The target triangle count is indicative and will not create exactly the input number.
Tip
If the resulting mesh has lots of holes or missing parts, try running the algorithm again with a higher target triangle count. It can be reduced afterwards using the decimation.
One major advantage of this approach is that the final mesh will automatically align to the structure of the 3D model.

Precision

The precision parameter will increase the fidelity of the output mesh, at the expense of some more polygons and more processing time.
Tip
Decreasing the precision will require more RAM to process, so keep track of your RAM usage when using this parameter.

Limitation

This algorithm does not handle surfacic meshes correctly. For surfacic meshes, consider using the proxy mesh with the surfacic parameter checked, or the dual contouring that will automatically handle the surfacic parts.