 | | Re: Type 5 lines at the edge of primitives [DAT]
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(...) lines (...) And then there is matching a sphere with a torus Which is demonstrated with this file. 0 1 16 0 0 0 78 0 0 0 -78 0 0 0 78 1-8sphe.dat 1 16 0 0 0 90 0 0 0 90 0 0 0 90 t04i1333.dat 0 (22 years ago, 7-May-02, to lugnet.cad.dev)
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| | Re: The Ldraw future (was: Idea, using functions for some primitives.)
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I completly agree with Tim, with one exception. The Lego parts coming out now are especially complex and involve patterns and colors that extend beyond the original LDraw colors set forth in James's program. I think a relaxation of the hard coded (...) (22 years ago, 7-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives [DAT]
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(...) Here is a model that demonstrates some of the problems with placing type 5 lines at the edge of the cylinder primitive. 0 1 16 0 0 0 10 0 0 0 10 0 0 0 10 1-4cyli.dat 1 16 0 0 20 10 0 0 0 10 0 0 0 0 -10 1-4cyli.dat 1 16 -20 0 20 10 0 0 0 10 0 0 (...) (22 years ago, 7-May-02, to lugnet.cad.dev)
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| | Re: Idea, using functions for some primitives.
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(...) By all means, a good discussion :-) (...) Here's how I see it. As a community we need to answer this question and act accordingly. What is the role of 'LDraw?' I see 'LDraw' as the file format and parts library, and its role is as a foundation (...) (22 years ago, 7-May-02, to lugnet.cad.dev)
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| | Re: Idea, using functions for some primitives.
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Time to throw fuel on the fire. Why are we still latching ourselves on to the original dos LDRAW program. Isn't it time the LDraw community graduated to Windows/Mac based programs and let the DOS program fade away from usage. Much like other (...) (22 years ago, 7-May-02, to lugnet.cad.dev)
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| | Re: bug report: "cert." list on tracker
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(...) See below. (...) I only found six: (URL) far as "number of files impacted"... 1-4disc.dat has 50 "related files" 2-4disc.dat has 58 "related files" 3-4disc.dat has only three "related files" 4-4disc.dat has 97 "related files" peghole.dat has (...) (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: Idea, using functions for some primitives.
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(...) Hi Mark, My two questions are: 1. How would behave the original LDraw program regarding this proposed extension? 2. How would you ensure meaningful polygon decomposition? In particular how would you ensure correct assembling of primitives and (...) (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: bug report: "cert." list on tracker
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Franklin, In your estimatation, how many files are waiting for fixed primitives to be certified? Right now, of the 77 primitives on the system, I count 7 as being fixes. Here's another viewpoint: Any primitive files in the PT system *should* have a (...) (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: Idea, using functions for some primitives.
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(...) For a linetype to include a 'function' in it's definition, we'd need to figure out what 'language' the functions would be written in. It's a fairly wide-open proposal. More likely, we'll add specific curved-surface primitives[1] at some point. (...) (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) Wow! This is so cool! These cooperating type 5 control points give us both first order continuity between the cylinder and the tangent plane, AND 2nd order continuity between adjacent cylinder parts. All with just a few small changes to a (...) (22 years ago, 6-May-02, to lugnet.cad.dev, lugnet.cad.dat.parts)
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| | Re: Type 5 lines at the edge of primitives
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(...) Yeah; I actually posted a response to that thread suggesting just this. (...) Well, it's only a problem if you don't add another type 5 line to the edge. And I agree that it's probably rare. --Travis Cobbs (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) Cool! Glad I could help! And after looking at the discussion Don linked to, I'm wondering if a similar thing could be done for type 5s on cylinder edges - make the second test point on the plane where a rectangle would be if it was butted up (...) (22 years ago, 6-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) Well, I did as you suggested, and it solved the problem without introducing any new ones. I was also able to then visualize why it worked on a continuing sphere once I had it working. --Travis Cobbs (tcobbs@REMOVE.halibut.com) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | bug report: "cert." list on tracker
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Steve, There is a "bug" with the certification list on the tracker. It is considering any primitive listed in the tracker to be a "subfile", regardless of whether or not that primitive already exists in the field (i.e., has already been included in (...) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) There was a discussion on this very issue in cad.dat.parts about 2 months ago. This one includes a link to a picture. (URL) don't think it was completely resolved though, as fixing it probably requires changing quite a few primitives and/or (...) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) Hmm... Good point; I hadn't thought of that. But I'll have to check to be sure (it's hard to visualize). The way I currently have my sphere, the joins between the segments are always drawn either twice or not at all. If this does work, though, (...) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | Idea, using functions for some primitives.
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I was thinking over this the other day, and thought maybe could be some sort of line type p that would work the same as the type 1 lines, but istead take a function instead of a piece. This would be for primitves that the drawing program replaces (...) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | Re: Type 5 lines at the edge of primitives
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(...) I'm not sure if I understand this properly - if the second "test" point is down the line where the cylinder joint (between two rects) would be if it was attached to a cylinder, won't that work? It'll mean the same line may occasionally be (...) (22 years ago, 5-May-02, to lugnet.cad.dev)
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| | Type 5 lines at the edge of primitives
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I'm not sure if this has been discussed before, but I discovered a problem with the use of type 5 lines at the edge of primitives. The basic problem is that there is no way for the primitive to know which direction any attached polygons are going to (...) (22 years ago, 4-May-02, to lugnet.cad.dev)
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| | numbers report
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(URL) certified files. 28 files need admin review. 189 files need more votes. 287 have uncertified subfiles. 99 held files. (Total: 623) (22 years ago, 4-May-02, to lugnet.cad.dev)
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