Subject:
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Re: Torus primitive discussion. was( Updated Primitive - 1-8t0102 1/8 torus)
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Newsgroups:
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lugnet.cad.dat.parts.primitives
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Date:
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Fri, 23 Feb 2001 19:03:47 GMT
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Viewed:
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4562 times
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In lugnet.cad.dat.parts.primitives, Paul Easter wrote:
> Ok, Let me see if I can make some sense of this... I have read it sevaral times.
>
> In lugnet.cad.dat.parts.primitives, Steve Bliss writes:
> >
> > How about using:
> >
> > TNNXFFFF.dat
> >
> > 2. Dedicating the one free filename digit/character to one of the numeric
> > parameters will also provide more filename consistency and sorting. And
> > giving this the major-circle denominator is more important than having a
> > fifth position in the tube:major-radius fraction.
>
> Sorry, can't seem to follow this statement.
OK, let me try to explain. Lars had suggested:
> Something like "NtiFFFF.dat" for
> "1/N Torus Tube Inner Major Radius 1 Tube Radius 0.FFFF"
Which uses 7 characters in the filename, out of the 8 allowed. I just
dedicated the 8th character to N, so we had NN instead.
This gives us a fixed-format for the filename, no matter what the value of
NN is. Fixed-formats sort better.
> > > Which values of N do you expect? 16? - since you only got 4 F's?
> >
> > I'd expect probably 04, 08, and 16. If we start getting hi-res versions of
> > torii, we might see higher values (smaller sweeps). With two decimal
> > digits, we can get down to a 3.6-degree sweep (that'd be 1/99).
>
> I agree, but not sure about the 3.6 degree version, that's a bit extreme.
Yeah 1/99 is extreme, that's kinda my point. We have more than enough
range in our possible numeric values.
About coding the t:m ratio in base-36, Paul reacted:
> oh no! too complex for the mainstream dat authors.
True. We'd have to publish a table of values.
But I think four base-10 decimal digits is probably good enough.
Steve
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Message has 1 Reply:
 | | Re: Torus primitive discussion.
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| (...) OK, Got it! Sounds good to me. So we are going to use; tNNxFFFF.dat t=Torus NN=sweep of torus, 01=1/1, 02=1/2, 04=1/4, 08=1/8, 16=1/16, 48=1/48? x=i:Inner or o:Outer FFFF=Tube Radius Ex. 1/3=3333 I have already changed my spreadsheets and (...) (24 years ago, 24-Feb-01, to lugnet.cad.dat.parts.primitives)
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