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Updated forum!

Last post by robertw « Sun Nov 24, 2024 8:06 am
Replies: 3
by robertw » Sun Jun 17, 2018 1:53 pm

Welcome to the new-look forums!

After much difficulty, I finally managed to migrate this forum from phpBB2 to phpBB3. So what does this mean?

You...

3 Replies

71880 Views

Last post by robertw
Sun Nov 24, 2024 8:06 am
Stella 5.4 has been released!

Last post by robertw « Mon May 12, 2014 2:05 pm

by robertw » Mon May 12, 2014 2:05 pm

Stella 5.4 has been released!

It's a free upgrade for existing Stella 5 users (use Check for Software Updates Now in the Help menu if it doesn't...

0 Replies

74505 Views

Last post by robertw
Mon May 12, 2014 2:05 pm
Announcing MoStella! Mobile app full of polyhedra.

Last post by guy « Fri Nov 02, 2018 3:27 pm
Replies: 3
by robertw » Sat Aug 24, 2013 3:06 pm

Hi folks,

I've finally finished my polyhedral mobile app MoStella. It's Android-only at the moment.

MoStella can display polyhedra, their duals,...

3 Replies

61975 Views

Last post by guy
Fri Nov 02, 2018 3:27 pm
Welcome!

Last post by robertw « Fri Jan 11, 2008 4:37 am

by robertw » Fri Jan 11, 2008 4:37 am

Welcome to the Stella forum!

This is the place to talk about Stella. Ask how to perform certain tasks, present a new technique you've discovered...

0 Replies

61750 Views

Last post by robertw
Fri Jan 11, 2008 4:37 am

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New to Stella - is there a way to combine OFF files?

Last post by robertw « Wed Apr 16, 2025 2:14 pm
Replies: 1
by Bumpf » Tue Apr 15, 2025 4:37 pm

Exactly what it says on the tin :mrgreen: I created two polyhedra that I think look very nice, and would like to create a compound of them. Is there...

1 Replies

15529 Views

Last post by robertw
Wed Apr 16, 2025 2:14 pm
Update the 4D libraries to reorganize and add new uniform polychora, plus demonstrations on polychora symmetries

Last post by robertw « Thu Mar 13, 2025 6:37 am
Replies: 5
by Mulliganaceous » Thu Jan 02, 2025 10:25 pm

Dear Robert Webb,

I enjoyed using Stella4D, although unfortunately, selection of elements seemed to be glitchy compared to the demo version.
I am...

5 Replies

137004 Views

Last post by robertw
Thu Mar 13, 2025 6:37 am
Stella4D vs. Miratope for 4D element types

Last post by robertw « Sat Mar 01, 2025 4:40 am
Replies: 7
by H A M » Tue Feb 25, 2025 5:59 pm

Generally, Miratope tends to be more accurate in distinguishing element types than Stella4D for non-compounds. While spittid has 3 element types...

7 Replies

68056 Views

Last post by robertw
Sat Mar 01, 2025 4:40 am
Running on Wine

Last post by H A M « Tue Feb 25, 2025 5:43 am
Replies: 8
by H A M » Sun Feb 23, 2025 5:39 am

I tried to run it but gave an error message: ChoosePixelFormat failed
In the terminal:
01bc:err:wgl:init_opengl Failed to load libGL: libGL.so.1:...

8 Replies

28309 Views

Last post by H A M
Tue Feb 25, 2025 5:43 am
Synchronizing Rotations

Last post by TomF « Fri Feb 07, 2025 12:26 am
Replies: 2
by TomF » Thu Feb 06, 2025 5:25 pm

In constructing stellations with Great Stella, especially those with pieces joined only at their vertices, I sometimes find it convenient to compare...

2 Replies

36487 Views

Last post by TomF
Fri Feb 07, 2025 12:26 am
Dual polyhedron name

Last post by robertw « Tue Oct 08, 2024 2:03 am
Replies: 1
by zhiwang » Tue Oct 08, 2024 1:53 am

Hi，Robert，
I'm currently working on dual transformations of some polyhedral shapes, such as the Johnson solids below and a few other polyhedra....

1 Replies

18209 Views

Last post by robertw
Tue Oct 08, 2024 2:03 am
Faceting II

Last post by fiveD « Sun Oct 06, 2024 7:47 am
Replies: 2
by fiveD » Sun Oct 06, 2024 1:39 am

Hi Robert,

I'm using the CTRL-Right click method of selecting polygons to perform some faceting. In the screenshot example, how is it possible to...

2 Replies

19111 Views

Last post by fiveD
Sun Oct 06, 2024 7:47 am
4OFF debug information

Last post by robertw « Tue Oct 01, 2024 3:06 pm
Replies: 5
by tmo35 » Thu Sep 12, 2024 5:13 pm

Hello,

I have generated what should be a valid 4OFF file, however trying to open it within stella gives a popup with the text; 'CreateCells failed:...

5 Replies

28463 Views

Last post by robertw
Tue Oct 01, 2024 3:06 pm
Nets of large polyhedra

Last post by robertw « Tue Oct 01, 2024 2:15 pm
Replies: 1
by Gokusa22 » Tue Oct 01, 2024 12:27 pm

Hello!
I love making large convex paper polyhedra models. So far i made the Archimedian and Catalan solids and also models for stI, gtI, ttI, etI,...

1 Replies

15935 Views

Last post by robertw
Tue Oct 01, 2024 2:15 pm
i need help

Last post by robertw « Fri Aug 30, 2024 6:47 am
Replies: 1
by Rico Liu » Thu Aug 29, 2024 9:12 am

I'm currently trying to create a truncated triakis tetrahedron. After applying the truncation function, the left side correctly displays the...

1 Replies

16712 Views

Last post by robertw
Fri Aug 30, 2024 6:47 am
Faceting Help

Last post by robertw « Fri Aug 09, 2024 1:01 pm
Replies: 11
by fiveD » Sun Jun 23, 2024 1:24 am

Hello, I'm new to Stella4D and learning how to use it.

I'm struggling with how to perform faceting and hoping someone can share some screenshots or...

11 Replies

52943 Views

Last post by robertw
Fri Aug 09, 2024 1:01 pm
Selecting Issue

Last post by robertw « Thu Aug 08, 2024 7:14 am
Replies: 7
by ndl » Fri Jul 26, 2024 4:54 pm

Hi Robert,

I'm really having a challenge with Stella4d where I click on an item and the program selects a different item instead. I believe I posted...

7 Replies

36429 Views

Last post by robertw
Thu Aug 08, 2024 7:14 am
how can I align the added polys on faces the central poly?

Last post by robertw « Tue Jun 18, 2024 3:38 pm
Replies: 5
by yihanzhu » Mon Jun 10, 2024 6:44 am

Untitled.jpg How can I align the hexagon-to-hexagon attachment of these polys? Is there any general procedures for more types of polys in this...

5 Replies

30332 Views

Last post by robertw
Tue Jun 18, 2024 3:38 pm
Are 5 tetrahedra connected by vertices possible in Stella 3d?

Last post by platonic « Fri Mar 08, 2024 6:07 pm
Replies: 2
by platonic » Thu Mar 07, 2024 9:52 pm

Hi there.

Is there a way to create in Stella 3d a model of a tetrahedron every vertex of which is a vertex of another tetrahedron?

In other words,...

2 Replies

32694 Views

Last post by platonic
Fri Mar 08, 2024 6:07 pm
Edge calculations not working.

Last post by robertw « Sat Feb 10, 2024 3:02 pm
Replies: 3
by stav242 » Wed Feb 07, 2024 6:09 pm

Hi,

im performing the following..
create new `PLantonic / Icosahedron`
adjust `dual radius` to 5
change `poly / create geodesic sphere` - frequency...

3 Replies

32420 Views

Last post by robertw
Sat Feb 10, 2024 3:02 pm
Small Stella back faces?

Last post by robertw « Thu Oct 26, 2023 2:46 am
Replies: 3
by SailorMike » Mon Oct 23, 2023 8:28 pm

I've just started using the program with a view to creating wooden models. What I'm trying to figure out at present is how to see the back faces . I...

3 Replies

49042 Views

Last post by robertw
Thu Oct 26, 2023 2:46 am
Problem with OFF files

Last post by tmo35 « Mon Sep 25, 2023 11:31 pm
Replies: 7
by tmo35 » Thu Sep 07, 2023 12:56 am

Hello,

I apologize if there is something here I missed, but I really cannot figure out what is wrong with my OFF files.

Attempting to open them...

7 Replies

57646 Views

Last post by tmo35
Mon Sep 25, 2023 11:31 pm
Truncation animation

Last post by robertw « Mon Aug 21, 2023 2:57 am
Replies: 5
by gphillips » Sat Aug 19, 2023 11:13 pm

Can anyone step me through how to show a morphing animation of the truncation of a polyhedron. e.g. The truncation of an icosidodecahedron to from a...

5 Replies

47569 Views

Last post by robertw
Mon Aug 21, 2023 2:57 am
Stella Course?

Last post by robertw « Tue May 30, 2023 3:18 am
Replies: 1
by Polytopos » Mon May 29, 2023 11:03 pm

My recent question and Robert's answer to it led me to realize that there is such tremendous power and creative potential in Stella. I love polyhedra...

1 Replies

30752 Views

Last post by robertw
Tue May 30, 2023 3:18 am
Is there a way to flip a convex group of faces to concave?

Last post by robertw « Tue May 30, 2023 3:08 am
Replies: 3
by Polytopos » Sun May 28, 2023 6:02 pm

I'm trying to make a shape in Stell4D that I call the concave triakis octahedron. It has the same face dimensions as the triakis octrahedron but...

3 Replies

35595 Views

Last post by robertw
Tue May 30, 2023 3:08 am
Opening tour, Stella closes

Last post by robertw « Mon May 01, 2023 2:51 am
Replies: 6
by melograno » Thu Apr 13, 2023 6:44 pm

Hi there,

When I click to open my previously saved tour, Stella closes. NO matter if I try to open it from the tour folder or directly from Stella,...

6 Replies

45304 Views

Last post by robertw
Mon May 01, 2023 2:51 am
Is there a way to label elements with math/laex symbols?

Last post by robertw « Mon Mar 27, 2023 10:29 am
Replies: 3
by platonic » Sun Mar 26, 2023 3:22 pm

Thank you Robert, I'm thoroughly enjoying this software for almost a year. Would love to someday share my work here.

My main question is the one on...

3 Replies

36216 Views

Last post by robertw
Mon Mar 27, 2023 10:29 am
BUG: excavating a cuboctahedron with an octahedron locks up the net algorithm

Last post by Ulrich « Sat Feb 25, 2023 7:12 am
Replies: 3
by H A M » Mon Feb 20, 2023 8:54 pm

should work but it doesn't

3 Replies

39818 Views

Last post by Ulrich
Sat Feb 25, 2023 7:12 am
Can you export a net as a .dxf file?

Last post by danielcastor « Tue Feb 14, 2023 6:52 pm
Replies: 4
by danielcastor » Wed Dec 01, 2021 9:59 pm

I work primarily in AutoCAD and am able to export .dxf models from Stella for use. This is fine for simple polyhedra, but the more complex shapes...

4 Replies

40647 Views

Last post by danielcastor
Tue Feb 14, 2023 6:52 pm
Printing tiled poster

Last post by Anselm « Wed Feb 08, 2023 4:43 am
Replies: 3
by Anselm » Tue Feb 07, 2023 4:16 am

I am using a printer and driver that is capable of tiling to make posters. Using Great Stella I use the Print Setup option to configure a multi-page...

3 Replies

35302 Views

Last post by Anselm
Wed Feb 08, 2023 4:43 am
Extra parts for the compound of five squares

Last post by robertw « Wed Jan 18, 2023 12:12 pm
Replies: 4
by TomF » Sun Jan 15, 2023 5:44 am

I have the feeling the I'm asking a stupid question, but here goes.
I'm making a compound of five squares and am following the suggestions in the...

4 Replies

40500 Views

Last post by robertw
Wed Jan 18, 2023 12:12 pm
why stella4d doesn't show the convexity of a polychoron in the info bar?

Last post by robertw « Tue Jan 17, 2023 5:54 am
Replies: 1
by H A M » Mon Jan 16, 2023 6:01 pm

so inconsistent

1 Replies

30665 Views

Last post by robertw
Tue Jan 17, 2023 5:54 am
[BUG] clicking on polyhedra face selects wrong face

Last post by robertw « Mon Jan 09, 2023 3:48 am
Replies: 4
by Mulliganaceous » Sun Jan 01, 2023 11:06 pm

Since downloading the full version of Stella 4D, I noticed whenever I click on a face of a polyhedra (not a cell on a polychora), the program selects...

4 Replies

42167 Views

Last post by robertw
Mon Jan 09, 2023 3:48 am
cross-sectioning a tetrahemihexacron

Last post by robertw « Fri Jan 06, 2023 2:25 pm
Replies: 1
by H A M » Fri Jan 06, 2023 4:02 am

apperently cross-sections aren't designed for infinite polyhedra

1 Replies

30925 Views

Last post by robertw
Fri Jan 06, 2023 2:25 pm
why for some reason faceting preview doesn't feature real-time color blending

Last post by robertw « Thu Dec 29, 2022 4:02 am
Replies: 1
by H A M » Wed Dec 28, 2022 9:42 pm

wy

1 Replies

30286 Views

Last post by robertw
Thu Dec 29, 2022 4:02 am
[BUG] can't rectify dual of rectified tesseract

Last post by robertw « Mon Dec 26, 2022 4:53 am
Replies: 1
by H A M » Sun Dec 25, 2022 9:34 pm

rectified dual of rectified tesseract is in here:

1 Replies

30930 Views

Last post by robertw
Mon Dec 26, 2022 4:53 am
Display single cell

Last post by AngusB « Mon Dec 05, 2022 3:30 pm
Replies: 2
by AngusB » Sun Dec 04, 2022 6:01 pm

Is it possible to display just a single copy of a stellation cell? I wish to 3D print individual cells and build up stellations, sometimes using...

2 Replies

32805 Views

Last post by AngusB
Mon Dec 05, 2022 3:30 pm
why for some reason stella4d rescales 4d off files

Last post by robertw « Mon Dec 05, 2022 2:49 pm
Replies: 2
by H A M » Wed Nov 23, 2022 7:59 pm

just why

2 Replies

34236 Views

Last post by robertw
Mon Dec 05, 2022 2:49 pm
Registration/settings not saved

Last post by robertw « Mon Dec 05, 2022 3:34 am
Replies: 1
by alexh » Sun Dec 04, 2022 11:25 pm

Hi,

A rather mundane question - I upgraded to Win 10 finally and now when I start Great Stella its asks for registration info every time. I tried to...

1 Replies

30046 Views

Last post by robertw
Mon Dec 05, 2022 3:34 am
Exporting 3D models with images on the faces

Last post by robertw « Sat Dec 03, 2022 3:48 am
Replies: 1
by Polytopos » Fri Dec 02, 2022 3:55 pm

Hi,

Stella4d noob here. I've made a model with custom images and text on the faces. However, when I export the 3D model (using OBJ format) the...

1 Replies

30493 Views

Last post by robertw
Sat Dec 03, 2022 3:48 am
4D

Last post by robertw « Sat Dec 03, 2022 3:37 am
Replies: 3
by robertw » Fri Nov 12, 2021 4:51 am

Someone asked me to explain 4D, so I thought it would be better to do it here in a post for all to see.

We only have 3 spatial dimensions in our...

3 Replies

38385 Views

Last post by robertw
Sat Dec 03, 2022 3:37 am
Net for cuboctahedron from tetrahedra+octagons? and Torus

Last post by ccrom1123 « Thu Nov 10, 2022 5:48 am
Replies: 2
by ccrom1123 » Sat Nov 05, 2022 5:03 pm

Hello,
(I'm a re-new user, only made basic stuff years ago)
I'd like to construct a cuboctahedra with a skeletal-looking net; made from 6 tetrahedra...

2 Replies

32906 Views

Last post by ccrom1123
Thu Nov 10, 2022 5:48 am
Program Crashes Scaling Inradius

Last post by H A M « Thu Sep 08, 2022 10:31 pm
Replies: 5
by wpthomps » Fri Sep 02, 2022 11:35 pm

Whenever I try to scale Archimedean solids by the inradius, Stella crashes.

I tried reinstalling Stella, but the problem remained.

My operating...

5 Replies

44076 Views

Last post by H A M
Thu Sep 08, 2022 10:31 pm
How many people bought Small Stella, Great Stella, and Stella4D?

Last post by robertw « Tue Sep 06, 2022 4:33 am
Replies: 1
by H A M » Mon Sep 05, 2022 7:49 pm

i just want to see how many people bought Stella4D vs Great Stella and Small Stella?

1 Replies

30618 Views

Last post by robertw
Tue Sep 06, 2022 4:33 am
APNG

Last post by H A M « Sat Sep 03, 2022 3:17 pm

by H A M » Sat Sep 03, 2022 3:17 pm

APNGs are just animated PNGs without the tradeoffs of GIF, right? Also I want Stella4D to export an APNG directly.

0 Replies

51743 Views

Last post by H A M
Sat Sep 03, 2022 3:17 pm
why does 4d view (not cross sections) don't have color blending on faces

Last post by robertw « Sat Sep 03, 2022 12:30 pm
Replies: 1
by H A M » Fri Sep 02, 2022 9:56 pm

happens on every compound polychoron with compound cells that have compound faces

step 1: see 75 tes compound in 4d library, switch to orthogonal...

1 Replies

30450 Views

Last post by robertw
Sat Sep 03, 2022 12:30 pm
typo in https://www.software3d.com/Support.php

Last post by robertw « Sat Sep 03, 2022 11:37 am
Replies: 1
by H A M » Fri Sep 02, 2022 11:29 pm

in the Before You Buy section, it reads Want to know more about Stella4D, Great Stellaand(sic)... , that's a typo.

1 Replies

30227 Views

Last post by robertw
Sat Sep 03, 2022 11:37 am
Stepping through stellations

Last post by robertw « Wed Aug 24, 2022 4:29 am
Replies: 1
by TomF » Tue Aug 23, 2022 10:12 pm

It's easy enough to step through the stellations of a base figure one at a time in Great Stella, but is it possible to move through them more...

1 Replies

30443 Views

Last post by robertw
Wed Aug 24, 2022 4:29 am
Coincident edges

Last post by Gordon « Mon Aug 22, 2022 11:07 am
Replies: 2
by Gordon » Mon Aug 22, 2022 8:59 am

Does Great Stella coalesce vertices and edges that coincide? I have some OFF models for which it says there are more than two faces meeting at some...

2 Replies

33572 Views

Last post by Gordon
Mon Aug 22, 2022 11:07 am
Selecting issue

Last post by SamHb « Mon Aug 22, 2022 6:02 am
Replies: 11
by ndl » Thu Apr 01, 2021 7:54 pm

Hi,

I just got a new computer and installed Stella 4d with the same installer that I had before, but I'm having a new issue that when I try to...

11 Replies

76493 Views

Last post by SamHb
Mon Aug 22, 2022 6:02 am
Strange rendering anomaly in Great Stella

Last post by Anselm « Sun Aug 07, 2022 6:45 am
Replies: 2
by Anselm » Sun Aug 07, 2022 3:47 am

If I load the Heptagrammic Cuploid in polyhedron view I see a bowl with seven sides, each side with 5 faces, and a regular heptagon as its base.

If...

2 Replies

33630 Views

Last post by Anselm
Sun Aug 07, 2022 6:45 am
How do I transfer the license to a new computer?

Last post by MathCookie « Sat Jul 23, 2022 1:17 pm
Replies: 2
by MathCookie » Fri Jul 22, 2022 9:04 pm

I purchased Great Stella years ago, but I just recently got a new computer. I transferred the Great Stella files over to the new computer (but not...

2 Replies

33340 Views

Last post by MathCookie
Sat Jul 23, 2022 1:17 pm
why stella4d can't autocolor 4d OFFs without color information, as opposed to 3d

Last post by robertw « Thu Jul 21, 2022 3:59 pm
Replies: 1
by H A M » Thu Jul 21, 2022 12:08 am

wy

1 Replies

30262 Views

Last post by robertw
Thu Jul 21, 2022 3:59 pm
why morph duals by expansion in 3d doesn't show spheres and cylinders while in 4d it shows

Last post by robertw « Sat Jul 16, 2022 3:46 am
Replies: 1
by H A M » Fri Jul 15, 2022 8:40 pm

that doesn't make any sense

1 Replies

30785 Views

Last post by robertw
Sat Jul 16, 2022 3:46 am
truncated sphere

Last post by robertw « Wed Jun 29, 2022 4:31 am
Replies: 1
by stav242 » Tue Jun 28, 2022 3:29 pm

Is there an option to truncate/chop off part of an object ?

ie, i only want half a sphere in the output file.

1 Replies

30519 Views

Last post by robertw
Wed Jun 29, 2022 4:31 am

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