Search found 496 matches

by robertw
Tue Dec 03, 2019 1:30 am
Forum: Stella Forum
Topic: 4D stellations
Replies: 8
Views: 1072

Re: 4D stellations

Roiger wrote:
Mon Dec 02, 2019 3:46 pm
Most base models should have mirror symmetry already though, right?
Yes many do, and many don't. Models like the snub cube, or compound of five tetrahedra have lots of rotational symmetry, but no mirror symmetry.
by robertw
Sun Nov 10, 2019 10:56 am
Forum: Polyhedron Models
Topic: A few pics
Replies: 20
Views: 2422

Re: A few pics

Hi Robin, I don't know where you saw the "mu" variable. You can find "Symmetry Group" in the glossary here: https://www.software3d.com/Glossary.php#symgroup It's just the collection of symmetries that an object has, eg reflection in a plane, or rotation around an axis. All I meant was to start with ...
by robertw
Sat Nov 09, 2019 5:56 am
Forum: Polyhedron Models
Topic: A few pics
Replies: 20
Views: 2422

Re: A few pics

You want to combine compounds that already have the same symmetry group, then they should be aligned.

Before putting them into a memory slot, make sure they're all the same scale by setting "Scale->Base Polyhedron Radius" to the same value for each.
by robertw
Sun Nov 03, 2019 8:45 am
Forum: Polyhedron Models
Topic: Built Models of Compound Polyhedra
Replies: 6
Views: 470

Re: Built Models of Compound Polyhedra

I think I just called them A and B at random. They may have more formal names.
by robertw
Fri Nov 01, 2019 3:47 am
Forum: Polyhedron Models
Topic: A few pics
Replies: 20
Views: 2422

Re: A few pics

14 cubes? They couldn't all fit into the symmetry group the same way.

Stella has compounds of 6 and 8 cubes in its library. You can blend these together (make sure the scales match!) to make a compound of 14 cubes:

Image
by robertw
Sat Oct 12, 2019 1:01 pm
Forum: Polyhedron Models
Topic: Built Models of Compound Polyhedra
Replies: 6
Views: 470

Re: Built Models of Compound Polyhedra

Looks to be very well made. Well done!

Yes you can find this in Stella at "Stella Library->Compounds->Cubes 10 B"


Image
by robertw
Wed Oct 02, 2019 7:18 am
Forum: Polyhedra
Topic: Constructing models with transparent faces?
Replies: 8
Views: 1852

Re: Constructing models with transparent faces?

Looks great! And a great example for using such a method.
by robertw
Tue Sep 24, 2019 12:14 pm
Forum: Polyhedra
Topic: Constructing models with transparent faces?
Replies: 8
Views: 1852

Re: Constructing models with transparent faces?

Late reply, but I haven't been active on this forum so much (forgat checking actively) Anyway.. The answer is: yes, I did. I made some models of polychora. I use plastic overhead sheets, on which I printed a little bit of colour. One result is here: https://i.postimg.cc/TLq2QptS/Rect5-Cell.jpg Here...
by robertw
Tue Sep 24, 2019 12:07 pm
Forum: Polyhedron Models
Topic: What's the most complex model you've ever made?
Replies: 29
Views: 100861

Re: What's the most complex model you've ever made?

Fantastic model Marcel!
by robertw
Tue Sep 24, 2019 12:06 pm
Forum: Polyhedron Models
Topic: On display in Finland
Replies: 3
Views: 6242

Re: On display in Finland

I wasn't there and haven't visited the Bridges Conference for quite some years. Not even the one in Sweden (where I live). During that time I was hiking in the Swedish mountains up in the North. Next year's Bridges is in Finland again, and I hope I can be there. Nice to see your models, Robert! Sor...
by robertw
Tue Sep 24, 2019 12:04 pm
Forum: Polyhedron Models
Topic: New Rubik's Cube-style puzzle made from paper
Replies: 4
Views: 15201

Re: New Rubik's Cube-style puzzle made from paper

marcelteun wrote:
Tue Sep 24, 2019 8:07 am
Never seen this one. That is an awesome model, Robert! Is it still in one piece?
Pieces pop out easily if you try to operate it, but it's easy enough to put them back in (hopefully the right way around!)
by robertw
Tue Sep 24, 2019 11:59 am
Forum: Polyhedron Models
Topic: Genus-41 Stewart toroid
Replies: 8
Views: 1355

Re: Genus-41 Stewart toroid

Thanks Marcel.

The link still works for me. Try it again maybe? Does it work for others?
by robertw
Fri Aug 30, 2019 2:58 pm
Forum: General
Topic: Music!
Replies: 1
Views: 1460

Re: Music!

Decided to give myself the musician name Disconnectica! I've updated the links in my post above. I have 7 tracks up now... Treat (vocal production described as Cookie Monster meets serial killer) https://soundcloud.com/disconnectica/treat-new The Shape of Pears (vocal production) https://soundcloud....
by robertw
Thu Aug 29, 2019 3:41 am
Forum: Stella Forum
Topic: 4D stellations
Replies: 8
Views: 1072

Re: 4D stellations

Use "Poly->Create Mirror Image". Only available when the base model doesn't have mirror symmetry already.
by robertw
Thu Aug 22, 2019 2:35 pm
Forum: Stella Forum
Topic: 4D stellations
Replies: 8
Views: 1072

Re: 4D stellations

When I was working on the 600-cell, after adding a bunch of these cores by using the blend from memory I ran into an error: "Couldn't find exit edge" What does that mean? It means something went wrong when adding lines to the stellation diagram. Could you send me a .stel file of the first model tha...