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- Path: ts5-08.tor.istar.ca!user
- From: scrutnzr@inforamp.net (Jim May)
- Newsgroups: comp.sys.amiga.graphics,comp.graphics.apps.lightwave,alt.3d,comp.sys.sgi.graphics,alt.design.graphics
- Subject: Re: The Old Golfball
- Date: 29 Mar 1996 09:18:19 GMT
- Organization: M.O.R.E. Men Of Reason -- Everywhere!
- Message-ID: <scrutnzr-2903960424330001@ts5-08.tor.istar.ca>
- References: <4jblud$kps@news1.io.org> <4jec1g$fcm@apollo.ekfido.kodak.com> <wturber.45.1B1E2B23@primenet.com>
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-
- > >In a previous article, gmead@io.org (Glen Mead) said:
- > >>elements are consistent on a real golf ball. How does one model a truly
- > >>realistic looking golf ball? If anybody could give me some pointers on how
- >
- > >Well, one thing that I'm sure would make a huge difference is to
- remember that
- > >the dimples on a golf ball are on a hexagonal grid, not a square one.
- >
- >
- > >--
- > >Paul Tomblin, Contract Programmer.
- >
- > I noticed that a tesselated sphere will generate a very golfball like
- array of
- > polygons when metaformed. Something to look at if you want to spend a few
- > hours fiddling in modeler. I never got a good golfball this way since I
- > couldn't get the dimples to smooth as much as I wanted. But someone else may
- > be more patient.
- >
- >
- > Walter (Jay) Turberville |wturber@primenet.com wturber@aol.com
-
- You are definitely on the right track, W.T., except that I would say that
- it's the _points_ that make that pattern. Most of the modern golf balls
- have a pattern where each dimple is surrounded by six others, _except_ at
- certain main points, which have _five_. The main points are at the center
- of five rows of dimples that go from main point to main point, defining
- what looks like spherized triangles from a 20 sided regular solid
- (somethingahedron).
-
- If there was a way to do a point-clone, with each clone "aimed" at center,
- one could use the tesselated sphere's own points to turn them into
- Booleaned dimples, using simple "cups" instead of complete spheres, with
- the exact same "cut" for all.
-
- I'm sure that a suitable ARexx or BML script could do this. If there is
- one, someone please email me... if you write it, same!
-
- It sounds dirty, but that looks like what the Viewpoint guys did, in their
- catalog.
-
- Jim May
- http://www.inforamp.net/~scrutnzr
- Phaethon Interplanetary Developments, LightWave Gallery
-
-
-