Forum: Carrara


Subject: Creating Geometric Shapes in Carrara

pc_artist opened this issue on Jan 12, 2003 ยท 26 posts


pc_artist posted Sun, 12 January 2003 at 6:29 PM

I know 1 can do a Cube and Isohederon ( whatever the name is ) An Basic Prism shape is easy But how would one do shapes for example like a Pentagon based object with 5 faces and 5 sides in Carrara 2?

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" The Only Limit is your imagination "

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twillis posted Sun, 12 January 2003 at 6:45 PM

Attached Link: http://www.uwrf.edu/~ll63/M247/geom/duals.htm

Well, I'd use the vertex modeller. You can make a pentagon by creating a oval with 5 sides. A Pentagon shaped prism would be just a matter of extruding the 5-side oval. Or, you could use 20 pentagons to make a regular solid. I've included a link that shows the 5 regular solids.

pc_artist posted Sun, 12 January 2003 at 6:50 PM

well 1 simple Extruding is 1 thing.. a complex way is another..

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" The Only Limit is your imagination "

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hartcons posted Sun, 12 January 2003 at 8:59 PM

Attached Link: http://market.renderosity.com/softgood.ez?ViewSoftgood=5891

might find something helpful in this collection

pc_artist posted Sun, 12 January 2003 at 9:15 PM

thanks Hart my aim was to try and make stuff like this myself, though.

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" The Only Limit is your imagination "

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Nicholas86 posted Sun, 12 January 2003 at 11:54 PM

Not sure what your difficulty is, twillis explained exactly what to do...have you solved your problem yet, I know you are looking for platonic solids, which are relatively simple to create...at least I think you are? Perhaps if you explained your dilemma more? Brian


pc_artist posted Mon, 13 January 2003 at 12:05 AM

Yes.. am wanting to create Plantonic Solids and simular suject.

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" The Only Limit is your imagination "

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twillis posted Mon, 13 January 2003 at 7:58 AM

I think making something like a dodecahedron will take some math figuring. Creating 20 pentagons is easy, but figuring out where they go is a bit more difficult, eh? Let me chew on it a bit... I have an idea for an approach that might work, but haven't had a chance to figure out the details and test it.


pc_artist posted Mon, 13 January 2003 at 9:10 AM

ok - Twillis

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" The Only Limit is your imagination "

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twillis posted Mon, 13 January 2003 at 9:38 AM

Attached Link: http://www.renderosity.com/messages.ez?Form.ShowMessage=662183

Meanwhile, you might check the above link for a discussion we had about making shapes using formulas.

pc_artist posted Mon, 13 January 2003 at 9:54 AM

just saw that but I am not good a formulaes and complex mathamatic... Looks like this idea of mine to make geometric shapes is going to be more involved that I hoped for.

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" The Only Limit is your imagination "

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twillis posted Mon, 13 January 2003 at 10:08 AM

No! Prithee, don't be faint of heart! We will NOT be defeated. We WILL tame this BEAST. I do so vow, upon my honor and upon the Divine Cheddar which dost sustain me. We shall PREVAIL, and thus join the Sacred Order of the Dodecahedron. The glory will be OURS. No, really, I'm working on it. It's gonna be doable, I promise.


keithw posted Mon, 13 January 2003 at 10:36 AM

Have you tried using the vertex modeler? Use "insert sphere" under the "Insert" menu. Changing the number of polygons to 10, 12, etc. and see what shapes it creates. I think 12 will give you an object of 12 pentagons Keith


Pefo posted Mon, 13 January 2003 at 12:52 PM

Attached Link: Polyhedrons

See : http://gianf.free.fr/polyhedrons.zip (polyhedrons format .dxf) Jean P.

twillis posted Mon, 13 January 2003 at 1:36 PM

Attached Link: http://www.toshen.com/shoji-lamps.asp

Here's another link that may seem a bit off-topic (it's about lamps), but click on "Side topics" and then "dodecahedron". Actually, all of the discussion of this guy's construction approach looks like it could be adapted for "virtual" construction.

Pefo posted Mon, 13 January 2003 at 2:03 PM

Attached Link: http://gianpf.free.fr

For creating geometric shapes , you can : 1 - Create the geometric shape with a soft like Mathematica or maple 2 - Export in DXF format 3 - Texture with Carrara Studio Jean P.

twillis posted Mon, 13 January 2003 at 9:16 PM

OK. Well, here's a recipe for a dodecahedron. I'll post a quick step-by-step for now, later I can go into more of the why-for if anyone is interested. 1. In the vertex modeller, insert an oval U size 2, V size 2, 5 sides, perpendicular to the Z axis. This will create a pentagon. 2. Select the pentagon. Copy it, paste. Then, Select--> Move, and move it in the X direction 0.81. This will align one side of the pentagon with the Y-axis. 3. Rotate the selection -116.56 on the Y axis, then move it back in the X direction -0.81. Copy. 4. Paste. Rotate 72 degrees on the Z axis. 5. Paste. Rotate 144 degrees on the Z axis. 6. Paste. Rotate -72 degrees on the Z axis. 7. Paste. Rotate -144 degrees on the Z axis. 8. Select all. Then Selection --> Weld, using a custom tolerance of 0.01. This will reduce the vertices to 15, and complete the bottom half of the shape. 9. Copy, then rotate on the X axis 180 degrees. 10. Then rotate on the Z axis 36 degrees. 11. Then move in the Z direction 2.62 inches. 12. Select all, the Weld, using a custom tolerance of 0.01. 13. Then Selection --> Crease edges --> All 14. Amazing your friends and families with your mighty dodeaohedron modelling powers. 9.

pc_artist posted Mon, 13 January 2003 at 9:27 PM

AWW twill.. you didn't have to go to all that effort.. tHank you anyway

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" The Only Limit is your imagination "

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twillis posted Mon, 13 January 2003 at 9:41 PM

It was a matter of HONOR, man! Not only did I owe it to the Sacred Cheddar, but I had to defend my position of Baroness of the Vertices. Actually, it's occured to me that each half could make an intresting hand for a robot, so then of course I had to try and make one.


twillis posted Mon, 13 January 2003 at 9:42 PM

OK, I admit, no one really calls me Baroness of the Vertices. Except my boyfriend, and that's only when we $%##)(NO CARRIER


pc_artist posted Mon, 13 January 2003 at 9:48 PM

To Twill : You are very kind to help.. thnak you..

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" The Only Limit is your imagination "

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Nicholas86 posted Tue, 14 January 2003 at 7:40 AM

I think he/she thinks you are odd twillis;)


twillis posted Tue, 14 January 2003 at 8:30 AM

Who, me?


pc_artist posted Tue, 14 January 2003 at 9:55 AM

I do not think Twillis is odd.. Just nice...

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" The Only Limit is your imagination "

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bluetone posted Tue, 14 January 2003 at 9:26 PM

Well, the rest of us think she's odd... but our kind of odd ;> And nice! AND, the Baroness of the Vertices. (But don't tell her boyfriend!)


pc_artist posted Tue, 14 January 2003 at 11:10 PM

Ok - lol

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" The Only Limit is your imagination "

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