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vZome
87 followers -
software for virtual Zome models and other geometry
software for virtual Zome models and other geometry

87 followers
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vZome 6.0 build 17 is available, with new selection tools!

http://vzome.com/home/index/vzome-60/

David Hall, my collaborator, has introduced some slick new selection capabilities, including the ability to select or deselect by clicking on a row in the parts panel.

We also have several important bug fixes in this release. Now you can create a custom scaling tool, and the tool factory buttons are enabled and disabled correctly during undo/redo.
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9/4/17
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A short video explaining the new toolbars in vZome 6.0.

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I've been learning React, a Javascript framework for interactive HTML5 components. My first project is a simple HP-style calculator for numbers in the heptagon field.

I'm also learning CSS, and the page could use some improvement, but it should lay out like a calculator keypad if your browser is grid-aware.

There's another CodePen for a Golden field calculator, if you poke around my profile.

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My short talk about Rhombofoam, from Gathering for Gardner 12, last March.

https://youtu.be/6YUHr-lvqXw

I don't love that key-frame, though!

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I made a PVC trellis in the shape of a partial Zome-ball, and now I've written up a description for anyone that might enjoy a similar project.

http://vzome.com/home/zomeballtrellis/

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vZome now supports heptagons!

vZome 6.0 build 13 is now available. We've opened up access to the "heptagon" field, which has been waiting in the wings for years. It is still a bit rough around the edges, but it is good enough to share with you.

You cannot combine heptagons and normal Zome structures, of course... they live in different fields (actually vector spaces over those fields), and each model uses just one field throughout. You'll find all the supported fields in the "New Model..." submenu of the File menu.

You can get build 13 for Mac or Windows using the links on this page:

http://vzome.com/home/index/vzome-60/

For Linux, send an inquiry, and we'll prepare a distribution.
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Must see! Use Chrome or any app that can render photospheres.
Hyperbolic Honeycomb Photospheres

Encouraged by +Tom Ruen again, I fired up the honeycomb rendering code this week. The result is approximately 70 new honeycomb images for Wikipedia and the album below with spherical images of some of my favorites. Have a look around!

This batch focused on uniform paracompact honeycombs. Uniform means they are vertex-transitive and paracompact means some cells have ideal vertices or centers. See if you can pick out some of the cell types.

There are many more paracompact honeycombs to render, but this was a nice chunk, covering all those with Coxeter diagrams that are linear graphs.

Relevant Links

Uniform Paracompact Honeycombs
The new Wikipedia images can be found here:
https://en.wikipedia.org/wiki/Paracompact_uniform_honeycombs

Visualizing Hyperbolic Honeycombs
This paper by +Henry Segerman and myself gives an introduction to exotic honeycombs like these. We focus on regular honeycombs, but much of the content is relevant.
https://arxiv.org/abs/1511.02851

Honeycomb Rendering Code
https://github.com/roice3/Honeycombs

POV-Ray
http://www.povray.org

Gory Implementation Details

I made some changes that improved this batch of images from the last and thought I'd share.

First, Tom noted that the recursion cutoff was jarringly visible for ideal cells. Increasing the number of edges, even by an order-of-magnitude, would not avoid this. However, fading out the edge color near the limit of recursion turned out to be quite effective!

I also made a level-of-detail change that allowed rendering <dr_evil> two meeellion </dr_evil> edges in each of the images, almost double than before.

Finally, I played with color a little. The darker colors feel more effective because of increased contrast with the edges.

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A short video demonstrating the basics of vZome 6.0, which features a much improved collection of tools and toolbars...

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Newly modeled orange, lavender, maroon, and olive struts arrived today from Shapeways. The orange struts were dyed at Shapeways; the rest I did myself, with Rit. I cut one of the sprues off each set, first.

I deem this a successful approach to mitigating the printing costs, without sacrificing print success rate or aesthetics of the resulting struts.

These are the first short maroon struts to exist in the real world, by the way!
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I have updated my Shapeways shop, with a more friendly organization and presentation, and several new and improved models:

https://www.shapeways.com/shops/vzome

Most strut models are now a single part, with a few struts connected by sprues, to reduce the cost of printing.

Note, I do not profit from selling the parts. The entire cost goes to Shapeways. If you'd like to print any model somewhere else, just ask and I'll share both the vZome model and the STL file.
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