Subject:
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Re: A discovery? and part 3475
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sun, 2 Apr 2000 14:23:28 GMT
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Viewed:
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1554 times
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"Fredrik Glöckner" wrote:
> Tore Eriksson <tore.eriksson@mbox325.swipnet.se> writes:
>
> Your function takes two (or more) 4-4edge primitives and connects them
> with quads, to create a "pipe" like object.
Not just 4-4edge - it takes all between 1/16 through 16/16 and 1/48 through 48/48.
>
>
> My function takes two arbitrary connected curves made up of type-2
> lines and fills in the space between the vertex pairs on the two
> curves. The type-2 curves may very well be inlined 4-4edge
> primitives, in which case our programs do the same thing, or they may
> be something else. I've had the use for a program like this many
> times (e.g. when making the 2854.DAT Technic Crankshaft Centre) to do
> the tedious work of simply filling in quads between two lines.
I see (I think...) If the two arbitrary connected curves run parallelly, I use LDS' EXTRUDE function, if not, I have to
make arrangements like this in LDS:
(curve 1 = P1 through P15; curve 2 = P21 through P35)
FOR I=1 TO 14
2 24 P(i) P(i+1)
2 24 P(i+20) P(i+21)
4 16 P(i) P(i+20) P(i+21) P(i+1)
NEXT i
FOR I=2 TO 14
5 24 P(i) P(i+20) P(i-1) P(i+1)
NEXT i
This is what I have to do for example now as I struggle with the horse's tail. Maybe your program will speed up that
procedure, but that calls to the need of removing the edge lines.
The advantage with PIPE is that hopefully programs like L3P will translate directly to conical POV primitives instead of
facetted surfaces from the pure LDraw code. I understand that this is impossible with arbitrary connected curves.
Oh, what a mesh this turned out to be...!
/Tore
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Message has 1 Reply:
 | | Re: A discovery? and part 3475
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| (...) Oops, sorry 'bout that. (...) Wow, you're working with the horse? You have my deepest respect! I think that using one tool or another is mostly a matter of taste. I haven't written LDraw-mode to compete with anybody else's tool, but because I (...) (25 years ago, 2-Apr-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: A discovery? and part 3475
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| (...) related. Quite a coincident! Your function takes two (or more) 4-4edge primitives and connects them with quads, to create a "pipe" like object. My function takes two arbitrary connected curves made up of type-2 lines and fills in the space (...) (25 years ago, 2-Apr-00, to lugnet.cad.dev)
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