Controls the basic properties of a polygon mesh.
To display: Click the Polygon Mesh node (at the top of the operator stack) in any explorer.
Subdivision
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The mathematical method for calculating the subdivisions.
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produces rounded shapes. The generated polygons are all quadrilateral. The higher the Subdivision Depth, the more this method
approximates a bicubic standard B-spline surface. At regular vertices (exactly four edges), the surface has C2 (curvature)
continuity; in other areas, the surface has C1 (tangential or parametric) continuity. The geometry produced is compatible
with the method described in "Recursively generated B-spline surfaces on arbitrary topological surfaces" by E. Catmull and
J. Clark (Computer-Aided Design 10(6):350-355, November 1978).
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produces shapes with the same silhouettes as traditional Doo-Sabin but with different tessellation. One advantage over traditional
Doo-Sabin is that XSI-Doo-Sabin correctly propagates clusters and cluster properties (including discontinuities) such as texture
UVs, vertex colors, and weight maps. Another advantage is that XSI-Doo-Sabin handles creases and hard edges better.
Like traditional Doo-Sabin, XSI-Doo-Sabin produces shapes that follow the original mesh more closely than Catmull-Clark. If
the original mesh has N polynodes, then each level L of subdivision has (4^L)N quad polygons. The higher the subdivision level,
the more this method approximates a biquadratic uniform B-spline surface. At regular vertices, the surface has C1 (tangential
or parametric) continuity; in other areas, the surface has G1 continuity (i.e., the tangents have the same direction but not
necessarily the same length).
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subdivides the mesh without smoothing it. This is useful when you want an object to deform well but do not want to change
its basic shape.
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Subdivides triangles into smaller triangles, giving better results than quad-based methods. The Loop method avoids bulges
and other artifacts when subdividing triangles. Catmull-Clark or linear is still used for non-triangles, and there is a smooth
transition at boundaries between Catmull-Clark and Loop. Not available with XSI-Doo-Sabin.
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