Re: Plug for CSG

Chris Marrin ([email protected])
Fri, 16 Jun 1995 11:56:26 -0700

> If I needed to describe how to make a set of gears to someone (or to a
> program), I would say:
>
> o create a sphere the diameter of the
> o cut away everything except a slice in the center (difserence with a
box
> offset to the right, difs with a box offset to the left)
> o cut out the teeth
> o move the remaining slice into place

To see a gear produced with the GeneralizedCylinder node, check out:

http://reality.sgi.com/employees/cmarrin_engr/vrml/

This is just an extruded shape with a bevel.

This is both a plug for GeneralizedCylinder and a statement that there are
many ways to generate shapes. We need to distinguish between nice ways to
generate objects and desirable ways to represent them in VRML.
GeneralizedCylinder is a compact way to represent many interesting shapes
that is easy to render (since there will be source code).

-- 
chris marrin      Silicon      http://www.sgi.com/Products/WebFORCE/WebSpace
(415) 390-5367    Graphics     http://reality.sgi.com/employees/cmarrin/
[email protected]   Inc.         
         "As a general rule, don't solve puzzles that open portals to Hell."