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Subdivide and Smooth Examples

Introduction

Users who are not experienced in subdivision modelling may have some initial difficulty in understanding the relationship between the proxy and the subdivided model (subsurf). This section aims to give some examples and tips on how to predict what output you will achieve by subdividing different types of geometry.

Definitions:

Proxy: (meaning 'substitute') This is the model that you actually create or draw in SketchUp, on which the Subdivide and Smooth tool will be applied. It is a rough low-poly approximation of the model you are actually trying to achieve, basically a cubic construction with no curves.

Subsurf: (subdivided surface) This is the resultant high poly organic model you obtain when the Subdivide and Smooth tool is applied.

Example 1 - Edges and Curvature

Notice how the number and location of edges in the proxy affect the curvature in the subsurf.

Example 2 - Inner Faces

When you see unexpected 'pinching' in the subsurface, you may want to check for a hidden inner face.

Example 3 - Using the Crease Tool

Creasing edges and vertices allows them to be locked in place. In the figure above, the green vertices and edges have been creased.

Example 4 - The Effect of Adding Edges

Example 5 - Holes in the Proxy

Example 6 - Subsurf Primitives

Example 7 - Cubes

Example 8 - Cones

Example 9 - Torus