Polytope Discord + Wiki + Miratope + OFFbuilder

[Wagyx Xygaw]

Hello everyone,

There exists a discord server for polytopes enthusiasts, I suggest you take a look.
https://discord.gg/zMRu7T4
They have put up a geometry wiki:
https://polytope.miraheze.org

Of course, they had to make their own piece of software both in javascript and rust.
https://github.com/vihdzp/miratope
https://github.com/vihdzp/miratope-rs
The executable is here.
https://github.com/vihdzp/miratope-rs/releases/tag/v0.0.3

Funny thing is they have found out about Antiprism in February 2021 and it started a conversation about porting their code from JS to C++ for speed reasons, ultimately it seems that they dropped JS for Rust. I have not finished reading the whole conversation yet.

An online tool :

https://vihdzp.github.io/offbuilder-v2/
no idea how it works though.

Have a good week-end.

[Vortex Swirling]

Thanks. I will look at these sites when I get back to my desktop 

Roger

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[Roger Kaufman]

Interesting. I've never been able to tackle higher dimensional geometry. I wonder if the people who do this are self taught or did was this a specialty in higher education. It has a professional language all its own.

I saw someone in the discord say of antiview, "3D, of course" lol! I guess we are just mundane!

I think of Antiprism as a sort of continuation of the Geometry Center of the University of Minnesota that closed in 1998. They were the developers of Geomview (off file format).

https://en.wikipedia.org/wiki/Geometry_Center


Of the many things we've done, we started a Conway Notation program which continued after the original George Hart's online program to a c++ program.

http://georgehart.com/virtual-polyhedra/conway_notation.html

The program took off into a wide array of operators on 3d models. Conway Notation is now often seen in various forms around the web. The Andrew Marsh page you posted in an earlier thread is one.

https://drajmarsh.bitbucket.io/poly3d.html

Here is another one

https://levskaya.github.io/polyhedronisme

Here is a rendition of a model he produces there as 'qqJ37'

conway qq J37 -p x | off_color_radial | antiview -v 0.03

There have been several iterations of the Wiki page on it.

https://en.wikipedia.org/wiki/Conway_polyhedron_notation

Tom Ruen had done quite a bit of work on the page only to have much of it removed

https://en.wikipedia.org/w/index.php?title=Conway_polyhedron_notation&oldid=796937557

I developed a way to color radially to resemble some of the models Tom had on the page

conway wcD | off_color_radial | antiview -v 0.02

At one point we thought we'd be able to be the definition of it but it "got out" as it were.

Roger

[Roger Kaufman]

On 4/20/2023 10:20 AM, Roger Kaufman wrote:
>
> https://levskaya.github.io/polyhedronisme
>
> Here is a rendition of a model he produces there as 'qqJ37'
>
> conway qq J37 -p x | off_color_radial | antiview -v 0.03

Here is a better estimate of the model but it is using U10 instead of
J37 so that there will be symmetry axes to radiate from.

conway qq u10 -p x | off_color_radial -m
map_xaaaaaa:xffffff:xff0000:xaa3333:xfff0e5:x889999:xdddddd:xff7777% -a
3 -a 1 -a 2 | antiview -v 0.01

I'm not exactly sure how he is coloring from centers with no axes
considering there are many coplanar faces on each side.

Roger