[HN Gopher] Polyhedra Viewer: Visualize relationships between co...
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       Polyhedra Viewer: Visualize relationships between convex regular-
       faced polyhedra
        
       Author : lioeters
       Score  : 109 points
       Date   : 2021-10-24 12:23 UTC (10 hours ago)
        
 (HTM) web link (polyhedra.tessera.li)
 (TXT) w3m dump (polyhedra.tessera.li)
        
       | ChrisMarshallNY wrote:
       | Very nice!
       | 
       | Thanks so much for sharing it.
        
       | Waterluvian wrote:
       | I love this website. Wow. I think it accumulates a bit too much
       | browser history but not a big deal.
       | 
       | As a complete novice to geometry and topology, I find the
       | classification of all kinds of types of polygons to be equal
       | parts maddening and beautiful. It's wild to me that we can
       | classify what we do to any kind of geometry to get these subsets.
        
       | yesenadam wrote:
       | So awesome. Nice work!
       | 
       | Aw I thought this was very familiar! - I loved Nat Alison's 10
       | minute !!Con 2019 talk, about its creation:
       | 
       | !!Con 2019 - _We Love Polyhedra! (And So Should You!)_
       | 
       | https://www.youtube.com/watch?v=XjvyELtrPF4
       | 
       | ...It 's been on HN before a few times, the only time it got any
       | interest was as a 2018 ShowHN
       | https://news.ycombinator.com/item?id=17685232 (30 comments)
       | 
       | Blog posts about its creation: _Making the Polyhedra Viewer_
       | https://blog.tessera.li/polyhedra
        
       | aj7 wrote:
       | Unless someone can show me how to generate a corner cube prism
       | (one of the most technologically important prisms, and quite
       | simple), this is coloring. I tried for a while.
        
         | knolan wrote:
         | That isn't a convex polyhedron, A retroreflective surface would
         | actually be the interface between tessellated cubes.
        
         | gilleain wrote:
         | Is that a regular faced polyhedra? From a google search it
         | seems like this is a class of shape that combines flat faces
         | and curved ones.
        
       | uwagar wrote:
       | lovely!
        
       | unclesaamm wrote:
       | I love this! Relatedly, here is a plug of an interactive
       | unfolding of 4d polytopes into their 3d faces that I made
       | recently: https://sam.zhang.fyi/html/unfolding/index.html
        
       | mkl wrote:
       | This is great! I think it really needs an undo button in the
       | operations mode.
        
         | fjfaase wrote:
         | Looks like you can use the back button of the browser for this.
         | And a redo can be done by using the forward button of the
         | browser.
        
         | lifthrasiir wrote:
         | Also shapes can be made arbitrary smaller. For example,
         | tetrahedron -> rectify -> rectify -> contract will result in a
         | smaller tetrahedron.
        
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       (page generated 2021-10-24 23:01 UTC)