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  Topic: Compounds of 10 regular polychora
Dinogeorge

Replies: 12
Views: 31637

PostForum: Stella Forum   Posted: Wed Mar 19, 2008 11:28 pm   Subject: Another view
Here's a view of the compound of ten grand 600-cells 0.555 3D cross section a bit off center, so that it looks like a surrealistic planetoid with tall peaks and deep valleys that you're passing over i ...
  Topic: Uniform compounds of icositetrachora
Dinogeorge

Replies: 3
Views: 11965

PostForum: Stella Forum   Posted: Fri Mar 14, 2008 7:05 pm   Subject: “Lesser” compounds of icositetrachora
Coxeter’s list of “regular” icositetrachoric compounds in Regular Polytopes altogether includes seven: the (incompletely) self-dual compound of five, two mutually dual compounds of 25 (“scrunched” and ...
  Topic: Dual colors
Dinogeorge

Replies: 3
Views: 11255

PostForum: Stella Feature Requests   Posted: Mon Mar 10, 2008 4:41 am   Subject: Dual colors
What do you use to change the colour of a part in the compound? If you just hit "c" (same as "Color->Replace Cell Color Throughout") it will only change colours in the base mod ...
  Topic: Dual colors
Dinogeorge

Replies: 3
Views: 11255

PostForum: Stella Feature Requests   Posted: Sat Mar 08, 2008 8:33 pm   Subject: Dual colors
I could use a "color dual compound same" option in Stella4D for coloring dual compounds: color the components of the dual compound the same colors as the corresponding components of the orig ...
  Topic: Uniform compounds of icositetrachora
Dinogeorge

Replies: 3
Views: 11965

PostForum: Stella Forum   Posted: Sat Mar 08, 2008 12:08 am   Subject: Compound of 450 icositetrachora
This is the compound of the “scrunched” and “strewn” compounds of 225 icositetrachora each, in dual position. As such, it has the 600 corners of the “scrunched” compound, where nine icositetrachoric v ...
  Topic: Funny pointer
Dinogeorge

Replies: 3
Views: 12036

PostForum: Stella Feature Requests   Posted: Sun Mar 02, 2008 4:52 pm   Subject: Re: Funny pointer
I didn't think to use the Space bar. So I tried it out and it does bring up the crossed-arrow cursor in a way I can control. Next time the cursor is stuck in that mode, I'l try hitting the Space bar a ...
  Topic: Uniform compounds of icositetrachora
Dinogeorge

Replies: 3
Views: 11965

PostForum: Stella Forum   Posted: Sun Mar 02, 2008 1:05 am   Subject: “Strewn” compound of 225 icositetrachora
The dual of the “scrunched” compound of 225 icositetrachora is the “strewn” compound. The 225 “scrunched” icositetrachora dualize into 225 like polychora that are distributed differently to make up th ...
  Topic: Uniform compounds of icositetrachora
Dinogeorge

Replies: 3
Views: 11965

PostForum: Stella Forum   Posted: Fri Feb 29, 2008 6:51 am   Subject: Uniform compounds of icositetrachora
There are lots of symmetric compounds of icositetrachora (including at least one infinite set, discovered, if I remember correctly, by Jonathan Bowers), many, but by no means all, of which are vertex- ...
  Topic: Funny pointer
Dinogeorge

Replies: 3
Views: 12036

PostForum: Stella Feature Requests   Posted: Thu Feb 28, 2008 5:09 pm   Subject: Re: Funny pointer
My guess would be that hitting the Space bar will get you out of that mode again though. Let me know next time it happens.

I didn't think to use the Space bar. So I tried it out and it does bring ...
  Topic: Funny pointer
Dinogeorge

Replies: 3
Views: 12036

PostForum: Stella Feature Requests   Posted: Thu Feb 28, 2008 8:28 am   Subject: Funny pointer
Hey, Rob--

Every so often when I start up Stella4D I find the cursor in this really annoying mode where it looks like a pair of crossed double arrows. I can't get the polyhedron on display to tumbl ...
  Topic: Books about Polyhedra
Dinogeorge

Replies: 10
Views: 29327

PostForum: Polyhedra   Posted: Thu Feb 28, 2008 3:11 am   Subject: Re: Cundy & Rollett
I don't have Mathematical Models, but have photocopies of a few relevant pages. I don't think they describe constructing the 5 cube model in this way. They seem to just describe nets for the externa ...
  Topic: Compounds of 10 regular polychora
Dinogeorge

Replies: 12
Views: 31637

PostForum: Stella Forum   Posted: Tue Feb 26, 2008 12:33 am   Subject: Ten grand hexacosichora
The compound of ten great icosahedral hecatonicosachora in a hecatonicosachoron is one of the first I built with Stella4D once I discovered it was making compounds it had failed to create before. I po ...
  Topic: Books about Polyhedra
Dinogeorge

Replies: 10
Views: 29327

PostForum: Polyhedra   Posted: Mon Feb 25, 2008 8:07 pm   Subject: Cundy & Rollett
There was one book, the title of which I've forgotten, which included nets for the compound of 5 cubes. They suggested a very sturdy construction, first building a single cube, then covering each fac ...
  Topic: Compounds of 10 regular polychora
Dinogeorge

Replies: 12
Views: 31637

PostForum: Stella Forum   Posted: Mon Feb 25, 2008 7:55 pm   Subject: Ten great icosahedral hecatonicosachora
Personally, I like the cross-sections of the http://i225.photobucket.com/albums/dd237/RobertCWebb/GreatIcosa-Slice0310.gif

Rob.

Very nice Exclamation Speaking of the great icosahedron, the present ten- ...
  Topic: Compounds of 10 regular polychora
Dinogeorge

Replies: 12
Views: 31637

PostForum: Stella Forum   Posted: Mon Feb 25, 2008 7:58 am   Subject: Ten grand stellated hecatonicosachora
This, as far as I know, is “humanity’s first look” at the compound of ten grand stellated hecatonicosachora in a hecatonicosachoron. As with the preceding compound, I painted it with just two colors ( ...
 
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