Search found 514 matches

by robertw
Fri Feb 21, 2020 12:00 pm
Forum: Stella Forum
Topic: Printing nets without edges?
Replies: 1
Views: 23

Re: Printing nets without edges?

Hi, I'm afraid you can't stop the edges being printed. Would be difficult I think to figure out which dots connected to which without the lines. I should add an option to alter the colour of shade of the lines though so you can make them lighter. For now all you can do is make sure the Line Widths -...
by robertw
Fri Feb 21, 2020 7:05 am
Forum: Polyhedron Models
Topic: A few pics
Replies: 25
Views: 3483

Re: A few pics

Very nice. Those Bruckner models are mostly painful to make!
by robertw
Fri Jan 17, 2020 2:43 pm
Forum: Stella Forum
Topic: Put a polyhedron inside another
Replies: 7
Views: 231

Re: Put a polyhedron inside another

The spheres that appear with "Display->Show Midsphere..." and "Display->Show Intersections with Spheres" are just intended as indicators, and no there's no way to alter their appearance. You might want to try "Display->Show Reflection Planes" which also looks like a sphere, but made up of great circ...
by robertw
Fri Jan 17, 2020 10:36 am
Forum: Stella Forum
Topic: Put a polyhedron inside another
Replies: 7
Views: 231

Re: Put a polyhedron inside another

Bit confused by the common sphere thing. A circumsphere is one that passes through all the vertices, so if they shared a circumsphere, the polyhedra would not be inside each other, they would intersect with all their vertices on the same sphere. Maybe you mean a common centre, but equal edge lengths...
by robertw
Thu Jan 16, 2020 10:35 am
Forum: Stella Forum
Topic: Put a polyhedron inside another
Replies: 7
Views: 231

Re: Put a polyhedron inside another

No you can't easily move or rotate one part relative to the other. They've one model at this point. By default they are added with aligned symmetries. Try it with other combinations of polyhedra and you'll see that it usually has the orientation you'd want. You can't really align vertices between an...
by robertw
Wed Jan 15, 2020 2:31 am
Forum: Stella Forum
Topic: Put a polyhedron inside another
Replies: 7
Views: 231

Re: Put a polyhedron inside another

Here is the general way to put one polyhedron inside another. Start with one of the models Decide how big you want it using one of the items on the Scale menu https://i.postimg.cc/HrvWWnh6/image.png Put it into a memory slot (keyboard shortcut: m1) https://i.postimg.cc/KRJxQ4xm/image.png Load the se...
by robertw
Mon Jan 06, 2020 2:08 pm
Forum: Stella Feature Requests
Topic: Truncation Rotation
Replies: 7
Views: 21064

Re: Truncation Rotation

It's funny, because you bumped it, I started reading the original post thinking it was new. I was even thinking my reply would start with "Believe it or not, I've had something like this on my to-do list for ages" and then I see that I already replied something like that 12 years ago! Everything fee...
by robertw
Mon Jan 06, 2020 1:53 pm
Forum: Polyhedron Models
Topic: Cricut paper cutting machine
Replies: 5
Views: 14521

Re: Cricut paper cutting machine

Hmm, the scoring wheel must be new since last I looked. I have a scoring tool that's more just a point. Either way I doubt the alignment is the same. Swapping out the tools may just add another opportunity for the alignment to go out, but who knows. I haven't tried using the scoring tool in the same...
by robertw
Sun Jan 05, 2020 6:40 am
Forum: Polyhedron Models
Topic: Cricut paper cutting machine
Replies: 5
Views: 14521

Re: Cricut paper cutting machine

Wow, this thread is over 10 years old now! Since then I did buy a Cricut cutting machine. It would be tricky to use with the current version of Stella, but I'm working on some features to add support for it (and hopefully other cutting machines like Silhouette). I found quite a few issues with Cricu...
by robertw
Thu Dec 26, 2019 1:58 pm
Forum: Polyhedra
Topic: How hard would it be to compute true filling?
Replies: 5
Views: 490

Re: How hard would it be to compute true filling?

My understanding is that for orientable polytopes, the density of a region will stay the same however the shape is transformed provided no facets pass over the region. For non-orientables, there is only odd and even density (1 or 0), but still regions will remain odd or even unless a facet passes ov...
by robertw
Wed Dec 25, 2019 8:08 am
Forum: Polyhedra
Topic: How hard would it be to compute true filling?
Replies: 5
Views: 490

Re: How hard would it be to compute true filling?

Do you mean something like this, with arms that cross over each other? https://i.postimg.cc/15HT439b/image.png And then pull the arms apart so there's no more overlap? https://i.postimg.cc/fT2K6tWW/image.png I guess the region of space that was once density 2 is now density 1, but you could simply m...
by robertw
Tue Dec 24, 2019 6:09 am
Forum: Polyhedra
Topic: How hard would it be to compute true filling?
Replies: 5
Views: 490

Re: How hard would it be to compute true filling?

Wouldn't that mean they are already odd density? Can an even-density region ever be transformed to an odd density?

Did you already find "Display->Polygon Filling Options" from the menu? What you want is similar to the Modulo-2 method.
by robertw
Sun Dec 22, 2019 2:08 pm
Forum: Stella Feature Requests
Topic: Ability to facet vertex figures/edge facet
Replies: 3
Views: 229

Re: Ability to facet vertex figures/edge facet

Not quite the same necessarily. Faceting a vertex figure could allow you to cut across the vertex figure, eg to make the pentagram face of a small stellated dodecahedron from the pentagonal vertex figure of an icosahedron. I imagine clicking on a vertex in the vertex figure would add a vertex to the...
by robertw
Sun Dec 22, 2019 2:02 pm
Forum: Stella Feature Requests
Topic: More faceting criteria
Replies: 4
Views: 265

Re: More faceting criteria

But why the term "tame"? I presume not being tame causes problems somehow? Yep I thought about vertex transitive faces after I posted last time. I realised it must be about reflective symmetry, not just rotational. If it was just rotational the faces would be regular, but with reflective symmetry as...
by robertw
Sun Dec 22, 2019 7:27 am
Forum: Stella Feature Requests
Topic: Ability to change default autocolor scheme
Replies: 1
Views: 151

Re: Ability to change default autocolor scheme

This is one thing that will be better in the next major release, though it may be a while before I can pull it all back together.