Reading a Diagram with Multiple Radii

[jimhami42]

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SketchUp Is [not] A Surface Modeler

I have heard it said many times that SketchUp is a surface modeler. This is technically correct, but it is limited to only one type of surface: a plane. When it comes to non-planar surfaces, these must be approximated by a sufficient number of flat faces. Mathematically speaking, there are a number of other types of surfaces that are native to most surface modeling software … for example, a ruled surface: [image] Most people think of it as two rails connected with straight lines (or rules) pro…