I like that Burr!

Being sarspreditious, as usual, fiddling with another way to get my heart stransplant working, the thought is of the potentials if MoI could produce a Polyhedron?
Brian

Burr

Thats not fair!
Now, the HOW in MoI!

Brian

@ Burr
> I'm getting very close! :o

lol That's a cracker abstract what do you call it ? :)

@ PaQ
> Love this kind of game, it only takes me 1 hour haha :P

Yeah, going through the forum lately, not enough modelling going on :-o, so I thought I'd throw this challenge in for a stir up, I'll see if I can post some more like this, or anyone else.
Done a quick render of Fredrik's challenge that you tackled, good one Fredrik !, the transitions look nice (attached)

@ Brian
> Being sarspreditious,......

sarspreditious ??? is this a Brian word, looked it up can't find it !





Cheers

Hi Brian,

> the thought is of the potentials if MoI could produce a Polyhedron?

Hi Brian, here is a method for that:




Start by drawing a central polygon with Draw curve / Polygon / Center, then draw the 2 connected ones by Draw curve / Polygon / Edge

Then you want to rotate that polygon up along its edge, which you can do by using Transform / Rotate / Rotate axis.

But you need to get a snap point for the proper angle, so to do that you set up 2 vertical circles that trace the path of rotation and you can find the angle as a snap point where they intersect.

Once you have rotated one up, delete the circles and the other flat polygon, and use Transform / Array / Circular with 5 items to produce the other sides. You can use Construct / Planar to make planar surfaces out of all the polygons.

That constructs have of it, you can then mirror and do a Transform/Rotate to make the second half into place.

EDIT: also attached Dodecahedron.3dm finished model file.

- Michael

Michael and all

Who could not love this forum!

Danny. "Sars---"--having used it I looked it up in the (many) dictionaries--could not find! It was a word my Mother, born 1890s, used regularly. It means "thats being a pain in the "neck" in an argument/discussion " (pita)

Another one, from my wife and her female cousins. "bonkerinka holders"---any thoughts?

Gotta laugh!

Brian

I was trying to figure out how to get that rotation!

Thanks.

Brian,
Thats from an old post of a Blender guy asking how to do a 4 sided rounded pyramid.

I'll find the link to the thread and post back.

It's not my original work! (It's mine but I was just following along here.)

Burr

>>lol That's a cracker abstract what do you call it ? :)

Thanks Danny, I call it "Cerebral overclocking!"

By the way, Your renders are enviable.

Very nice!

Hi Burr, I think this is the thread you are referring to:

http://moi3d.com/forum/index.php?webtag=MOI&msg=1782.1

- Michael

Yes thats the thread.

After it was all said and done I liked the way MG did it with "Larger Sweep Sheets" and trimmed together. Thats what created the model I just posted.

Thanks,
Burr

Michael,
Is there a name for the intersection or method you created with the two circles for the Dodecahedron? I will be studying this a bit and would like to go a little deeper with some googleing/wikipedia stuff.

Thanks,
Burr

Hi Brian,

>if MoI could produce a Polyhedron?


How about an icosahedron?



That is produced using 3 planes for construction




- Steve

Not as much fun as trying to build it yourself ... but for reference, check out

http://www.rhino3d.nl/pythposter/pyth3dm-eng.html

all .3dm files

cheers,
eric

Thanks Steve.

These are the times when one wishes the simple constructions of polyhedron options in the Carrara Vertex Room could be saved to bring into MoI!

Brian

Eric

What a great site! All saved into my MoI file saves recources! Thanks.

Brian

Hi Brian,

> These are the times when one wishes the simple constructions
> of polyhedron options in the Carrara Vertex Room could be
> saved to bring into MoI!

If you want to mess around with polyhedra, you can save off of Rinus Roelofs' model files from that link that Eric posted:
http://www.rhino3d.nl/pythposter/pyth3dm-eng.html

Then when you want to bring one into your current project use File / Import to load it into your current file.

- Michael

EDIT: Looks like you figured that out already! :)

Hi Burr,

> Is there a name for the intersection or method you created
> with the two circles for the Dodecahedron? I will be studying
> this a bit and would like to go a little deeper with some
> googleing/wikipedia stuff.

I'm not really aware of any special name for that method... I would call it a kind of "geometric" solution since it is setting up additional geometry to intersect to find the right point.

For more information you might try googling "platonic solids". You'll probably find some other methods that calculate what the various angles have to be for the pieces to meet exactly.

- Michael

Eric/Michael

For interest
Those polyhedron files do not Thumbnail--as do not MoI 3DM files!

Brian

Hi Brian,

> For interest
> Those polyhedron files do not Thumbnail--as do not MoI 3DM files!

They were possibly saved from Rhino using the "Save small" function which tries to reduce the amount of stuff stored in the file.

If you want to get Thumbnails, save them from Rhino without using Save small and that should make a thumbnail image inside the file.

- Michael