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POVray algorithm to map 2D images onto adjacent triangles of a geode   Message List  
Reply | Forward Message #1562 of 1619 |
Re: POVray algorithm to map 2D images onto adjacent triangles of a geodesic surface

I don't think this answers your question, but it sounded like something close enough for me to show off my icosahedral creation:

http://tech.ph.groups.yahoo.com/group/Polytopia/photos/view/4133?b=1 

Does that give you any ideas? My idea involves stitches on canvas. Each "equilateral" triangle  is made up of  five stitches (2-4-6-4-2). The resulting needlework piece is then constructed into its icosahedron and given a string to hang by.

A slightly heavy Christmas ornament.

OR, do whatever you want with the template. Make little ceramic tiles and create a large sculpture out of it.

I have other models with different surface patterns. I'll find them and post them to the album I just made if anyone is interested.

Mitch

--- In Polytopia@yahoogroups.com, "bruce1618r" <bruce@...> wrote:
>
> Hi all:
>
> I'm interested in figuring out a general algorithm for mapping
> 2D images onto adjacent triangles of geodesic surface (for different
> frequency geodesics); rather than reinvent that wheel, is there an
> algorithm (or better yet POV-Ray code) and/or a pre-processor to map a
> 2D image onto a portion of a geodesic surface? I'm guessing that the
> general approach is to use a good 2D to spherical map with minimum
> distortion, and then apply sphere to geodesic triangle mapping... Any
> help with part or all of this would be appreciated! Ideally, I'd like
> to be able to define the orientation, and scaling for a 2D
> (rectangular) bitmap (e.g. jpg) file and then apply it to a geodesic
> surface (specifying the frequency (using spherical subdivision of an
> icosahedron) and render with POVray.
>
> Thanks in advance! :-)
>


Mon Oct 13, 2008 6:23 pm

mitchpowell2
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Message #1562 of 1619 |
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Hi all: I'm interested in figuring out a general algorithm for mapping 2D images onto adjacent triangles of geodesic surface (for different frequency...
bruce1618r
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Oct 13, 2008
5:28 pm

I don't think this answers your question, but it sounded like something close enough for me to show off my icosahedral creation: ...
Mitch Powell
mitchpowell2
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Oct 13, 2008
6:23 pm
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