Loop Subdivision
Subdivide triangular meshes
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API function: algo.loopSubdivMesh. Considering a surfacic mesh solely composed of triangles (ie, no quadrilaterals), this function applies the one-step Loop Subdivision algorithm in which each triangle is subdivided into four smaller ones. Vertices are positioned to create a smooth subdivision surface. This function is applied recursively D times, where D is the subdivision depth (see parameters).
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| A low-poly mesh | Loop Subdivision (depth D=1) | Loop Subdivision (depth D=2) |
Important
If the mesh has non-triangular surfacic elements (i.e., quadrilaterals), the function will not do anything. See algo.triangularize.
Sharp edges
The subdivision preserves edge sharpness along the surface border: after topological subdivision, vertices are placed so as to preserve edge sharpness (following section 2.1 of this paper). |  |  |
| Sharp border edges | D=1 | D=2 |