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  Topic: did you know these?
dysphras

Replies: 0
Views: 6898

PostForum: Stella Forum   Posted: Thu Jun 12, 2008 8:52 am   Subject: did you know these?
Slice (at 0.5) a 5-Hi (120-cell) with a hyperplane direction cell-1st. Do the same to a 6-Ex (600-cell), same depth but direction vertex-1st this time. Save the two slices (polyhedra) for comparing.
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  Topic: non-tetrahedrizable polyhedron
dysphras

Replies: 2
Views: 7801

PostForum: Stella Forum   Posted: Thu Jun 12, 2008 8:29 am   Subject: non-tetrahedrizable polyhedron
Cool, I didn't know there was such a thing. I believe it always works in 2D, that any non self-intersecting polygon can be divided into triangles just using the original vertices. I hadn't realised th ...
  Topic: Creating convex polychora from vertices
dysphras

Replies: 14
Views: 26711

PostForum: Stella Feature Requests   Posted: Wed Jun 11, 2008 11:08 am   Subject: polychora from OFF vertex coordinates and cell description

Stella4D is a great program - One feature I would like to see added is the ability to generate a convex polychoron, by using only the vertices - sort of a convex hull feature.
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M ...
  Topic: non-tetrahedrizable polyhedron
dysphras

Replies: 2
Views: 7801

PostForum: Stella Forum   Posted: Wed Jun 11, 2008 10:52 am   Subject: non-tetrahedrizable polyhedron
Hi everybody,

Here are the coordinates for the celebrated *Schonhardt's non- tetrahedrizable polyhedron*. Please copy the following in *txt* format, save with the extension *off* and open it with S ...
  Topic: Császár and Szilassi Polyhedra
dysphras

Replies: 8
Views: 23016

PostForum: Stella Forum   Posted: Tue Jun 10, 2008 8:55 am   Subject: Császár and Szilassi Polyhedra
Here is the OFF contents for Szilassi and Csaszar polyhedra:

Szilassi:

14 7 21
12.0 0.0 12.0
-12.0 0.0 12.0
0.0 12.6 -12.0
0.0 -12.6 -12.0
2.0 -5.0 -8.0
-2.0 5.0 -8.0
3.75 ...
 
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