Primitive naming - Printable Version

Primitive naming - Printable Version

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Primitive naming - Ronald Vallenduuk - 2013-11-16

If I want to do a prism primitive similar to tri3a1, but with one right-angle side and the diagonal side, what should that be called?
In general, what is the naming scheme for primitives? Looking at all the various cube-based primitives I haven't found the logic yet...

Re: Primitive naming - Michael Heidemann - 2013-11-17

There is no rule for all possibilities. If the name you choose extensible for other similar primitives, I am pretty sure we will use it.

Re: Primitive naming - Chris Dee - 2013-11-17

There is a logic to thebox primitives:

Code:
box

   n    = number of faces [i]present[/i]

    x   = used to differentiate the different configurations of faces (- = the "default" adjacent, o = 4-face ring, u = 3-face "U"-section)

     e  = number of faces [i]absent[/i]

      p = used to differentiate different configurations of the missing edges (a=adjacent, p=parallel)

You don't say which edges you plan to include, but from what you describe, your new primitive should be tri2.dat or tri2-n, if one or more of the 9 edges are omitted.

Re: Primitive naming - Ronald Vallenduuk - 2013-11-18

It should be a tri3 as it'll have the base triangle as well as two sides. Here's what I mean:

tri3 by Duq, on Flickr

Re: Primitive naming - Max Martin Richter - 2013-11-18

In my eyes this prim is not needed, because you can get the result by simply deform tri3a1 in it's rotation matrix.
If you need help with deforming feel free to ask.

/Max

Re: Primitive naming - Ronald Vallenduuk - 2013-11-18

If you could point me to a tutorial about deformation matrices that would be great, thanks.

Re: Primitive naming - Philippe Hurbain - 2013-11-18

I agree with Max, this new primitive is not needed.
There's a detailed page here about this kind of transformation. It's in French, but hopefully Google translate is your friend Wink

Re: Primitive naming - Ronald Vallenduuk - 2013-11-18

Thanks for the link. I'll first have a go with dusting off my school-French. If that fails I'll ask Google to help out ;-)