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 CAD / Development / 4416
  Voting Open for LCAD Parts Update 2000-01
 
[FUT lugnet.cad.dev] I've (finally) posted the page for voting on the next parts update. Before you run off to check things out, I've got a couple of items of business: First off, I want to extend apologies for taking so long on this thing. The last (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)  
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I have a few comments: 2717.dat - Technic Seat Should we call this part "Technic Seat 3 x 2 Base" for clarity? I'm aware that theere is only one technic seat at the moment, but this might change, plus a more descriptive name may be in place. (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) It's probably a good idea to add the sizing information. (...) There's also a fix in this update to rename the old 'Technic Connector Locking' to 'Technic Toggle Joint Locking'. (...) There is precedence on using the part name to differentiate (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Great work Steve. But has anyone managed to download the "all the DAT files" zip file. I get "Couldn't find the resource" for (URL) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Well, this kinda changes the situation! ;-) (...) : : (...) It depends on whatever the "4273.DAT Technic Connector Locking" gets named, but the important thing is that they are kept in the same sub-category, IMO. If the 4273 is renamed to fit (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Comments on parts up for vote- Pt 1
 
I made it half way through the parts when MSOE crashed and lost my comments, so I'll do this one in rounds. 6199.dat - Belville Swing: missing edgelines where the uprights meet the crossbar. Since the bars are equal diameter, this can easily be (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) This part, like other "decorated" parts, has a subfile (for whenever I feel confident enough to tackle a *printed* 6x4 flag, like the Jolly Roger). If the DAT file is *just* the DAT file (for the undecorated/basic form), and not a MPD file (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Yep. I'd change the rename of the 'Technic Connector Locking' to 'Technic Connector Toggle Locking'. (...) I know what you mean about the angled connectors. I suppose they should be "Technic Connector Angled". I'll think on that some more (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Comments on parts up for vote- Pt 2  [DAT]
 
30156.dat - Panel 4 x 6 x 6 Sloped: Needs two little edgelines: 2 24 60 72 0 56 72 0 2 24 -60 72 0 -56 72 0 4728.dat - Plant Flower 2 x 2: should have type 5 lines for the inside/underside surfaces--but it's probably not worth the work :) 2951.dat - (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I must have been hallucinating. I'll fix it, and let y'all know. Steve (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
Franklin W. Cain <fwcain@yahoo.com> wrote in message news:FsvF0L.F2I@lugnet.com... (...) No, I mean empty as in no lines of text in the file. This is downloading the individual .dat from the voting page. I can't get the zip file to download, (...) (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) Erk. QA failure. Should be an MPD with the file and the subfile, but it appears to be an empty DAT. I'll fix this up tonight. Steve (25 years ago, 11-Apr-00, to lugnet.cad.dev)
 
  comments on parts up for vote- part jg1  [DAT]
 
I found some minor problems with some parts up for vote (okay, just a few little ones which John Vanzwieten missed :) ) these problems revolve around the classic space logo's leftmost edge --973p90 there are two partially overlapping triangles, one (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: comments on parts up for vote- part jg1
 
(...) There is also a 1 x 6 & a 1 x 4 slope with space logo, a flag with space logo & there is probobly more. (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) OK, the zip file is there. It contains all parts, primitives, and subparts. Find it at: (URL) Steve (25 years ago, 12-Apr-00, to lugnet.cad.dev)  
 
  Re: Comments on parts up for vote- Pt 1
 
(...) OK, this is fixed now. Steve (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
WOW the millenium update? could it be? LOL good job steve! Tburger (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I think I disagree with you. I've found the Bezier curves to be a good model for how the flexible axles bend in real life. But it is important to have a correct model for the flexible part in the first place. While the notched end parts are (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 2
 
(...) Thanks, I'll look into this. I also noticed one flaw myself. The cross axle hole does not have a bottom; you can see the internals of the part when looking down the axle hole. Adding a 1/2 disc at the end of the cross axle hole should fix (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: comments on parts up for vote- part jg1
 
(...) I don't know about those 2 parts but I have a 3x6 slope with the classic space logo here. Leonardo (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: comments on parts up for vote- part jg1
 
(...) OOps. My list should have read 3 x 6 & 3 x 4 not 1 x 6 & 1 x 4. (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I haven't tried any of this but wouldn't Hermite curves work better ? Bezier curves don't need to go through the control points (except for the endpoints) and Hermite curves also have the advantage of letting you specify the tangent vector for (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I have been able to test only a few parts iet, but here are my findings: - [flowers.dat] This file shows superimposed polys (tris and quads) in the petals of the flower, this is a problem in the flower itself (3742.dat), not in the flowers.dat (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)  
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Another file - [3471.dat] This file has a lot of work on it, but still has some problems, specifically almost all the quads from the base are bowties. See the following image: (URL) there are a few (maybe many, but few as far as our yes can see) (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Rui Martins <Rui.Martins@link.pt> wrote in message news:Pine.GSU.4.10.1...0@is-sv... (...) Superimposed polys are allowed, AFAIK. Maybe not the most elegant solution, but they render fine. (...) petals, (...) better (...) aprxomiation (...) I've (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) I'll fix the singular matrices - this was authored before L3Lab was publicly available. It was also done in the expectation that the matching door-frame would be sent in for the voting (don't remember who by). Maybe I'll put that on my work (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: comments on parts up for vote- part jg1
 
(...) [ detail snippped ] (...) Thanks a lot for tracking these down - I guess its clear how I generated all these from one master pattern (with the error)! I'll fix them all and send updates to Steve. The one remaining part is the 3x6 shallow slope (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) My comments (that have not already been mentioned) ... 2494p01.dat Does this exist as a printed part, or is this really a sticker? 2552.dat The edge lines on the underside do not seem to line up with the boundaries of the quads. 30044.dat (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Hmm. That sounds workable. (...) Portable Java would be best... (...) I agree, I just don't see how flexible parts can be coded in LDraw. If you've got some ideas in this direction, I'd love to see them. The lack of flex in LDraw parts is a (...) (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: comments on parts up for vote- part jg1
 
(...) Wrong, chris. There are at least 3 parts left to do. (25 years ago, 12-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) [snip] Hey. why not add a new linetype or two to the ldraw format? this would solve both problems simultaneously: platform, and detail. (e.g. now it's the renderer's problem, not ours!) can't you just add: 6 c x y z a b c d e f g h i x' y' z' (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) The problem with this approach is that there are many ways to draw a curve from one point to another, even given the angles at the end points. The user may have some preferences, for example that there should be a clip connected to the hose at (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) If you are interested to see how I did it, you can view the DAT file for the model at: (URL) for the keyword "Bezier" to find the first occurence of the bent flexible axle. I used the following names for the various parts of the axle: (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 2
 
(...) I've fixed these two points now. The updated dat file can be found at (URL) also sent the update to Steve Bliss. Fredrik (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Rui Martins <Rui.Martins@link.pt> wrote in message news:Pine.GSU.4.10.1...0@is-sv... (...) Sorry, but I am unable to find the location where you pointed the missing quads. If the arrow intends to point to the conic surface between the handle and (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
First I would like to point out, that some of the renderings I supplied specifically represent quads in GREY and tris in WHITE, and some have all the polys edge lines (the intrinsic edges) drawn, to be able to see the tesselation applyed. (...) Yes, (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) You are welcome, no need to thank me for it, we do this for the fun of it! (...) Well, I have used my program to find it, but the actual image is from ldglite or l3glite, I'm NOT sure which. I used this image, because you can clearlly (maybe (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) on (...) In fact is is worse than just singular matrices - there is an error in these lines which means the intersects between the bars are not be drawn as lines. Fixed and sent to Steve. Chris (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Rui Martins <Rui.Martins@link.pt> wrote in message news:Pine.GSU.4.10.1...0@is-sv... (...) solution, (...) which (...) their (...) No argument here. (...) are (...) But the amount of superpositioning is generally small compared to the overall size (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) No hassle felt on my end--I feel stupid that I went to all the work of figuring out the angles, and then didn't document them. (...) Good point. We should definitely try harder to document part-usage. (...) Now that you mention the complete (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01  [DAT]
 
(...) I could redo the part, slicing it into sections that are 4LDU long. To properly package, this, each distinct/unique section should be made into a subpart file, and the main part files would be a list of these subparts. Taking this approach, (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) here's one solution: linetype 6 can be used multiple times in a row, with the x, y, and z set to where the curve must pass through, and the orientation to what the tube must look like in that position. hey, it *MIGHT* work. another, MUCH (...) (25 years ago, 13-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) It would probably be good enough to keep the "tip" in one, non-bendable part. Sure, I can think of situations where one would put only the outer part of the tip into something, causing the other part to bend. But that would probably be quite (...) (25 years ago, 14-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
Chris Dee <chris_w_dee@hotmail.com> wrote in message news:Fsx353.67B@lugnet.com... (...) This same criticism applies to: 4478p01.dat - Baseplate 32 x 32 With Driveway and Grey Pattern -John Van (25 years ago, 14-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
I posted an updated TFA11 to (URL). Geez, I wish I could follow hyperlinks within my newsreader. There are some mistakes in the part, but the posting was mostly to look at how the main file was constructed, not the subfile details. (...) OK, I made (...) (25 years ago, 14-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 2
 
(...) Oops, I ment to enquire how to do them, but forgot:) As my system is in a total mess at the time, I'm not able to make the corrections, if anyone else want to, it's fine by me, otherwise it'll have to wait until I get something running here. (...) (25 years ago, 15-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I think there are a few mistakes in that file. I posted a corrected version which looks good on my system. (...) Yeah, that's a good point. You'll do whatever you want on the issue of splitting the central part of the hose or not, I don't care (...) (25 years ago, 15-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Dear Authors, Some comments on the parts: ---...--- 2717.dat Technic Seat 1. The vertical stud on the back raises backward beyond the plane of the box. Left or right view can clearly reveal it. 2. Holes are missing from bottom of the seat. My part (...) (25 years ago, 17-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Sorry, that's my fault -- I had started out adding the 'Official...' comment to some files, but then I figured I should probably wait until *after* the voting to add/change the tag. But 3461.dat is an old part, that accidently got overwritten (...) (25 years ago, 17-Apr-00, to lugnet.cad.dev)
 
  2000-01 Voting Closing Soon
 
The votes have been trickling in. If you want to make your opinion known, please vote soon! I will probably be taking the vote-page down tomorrow night. That's Tuesday, April 18th. If you have fixes for any of your parts that you want included in (...) (25 years ago, 17-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)  
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Some more comments on parts ! Maybe I will repeat some other notes, I don't know, I haven't checked all the other mails to compare, so here goes nothing. - [2466p07.dat] This part as 2 bowtie quads in the front panel See the following image: (URL) (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) This depends only on the actual part, the point of view and in which order the overlapping polys are given (also depends on view). (...) Not exactly, see what I mean in the following example image: (URL) points are marked in RED 1 - Quad and a (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) complete half disc: It would obviously be better to use a half disc in the first place. What John meant above was, if I understood him correctly, a disc with a diameter larger than the quad's height. That way, the problem is non-trivial, and (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Maybe he meant something like: (URL) or (URL) And as you can see, not more polygons, but actually less. as a rule of tumb, "less points implies less polys". NOTE: both examples could be even more simplified (less points) if we removed the disc (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Which submitted parts have been put on hold ?
 
Steve, in lugnet.cad.dev, you wrote: [snip] (...) [snip] I'm one of the unlucky victims who's parts didn't make it into this vote. Although I'm not happy with it, I respect your motivations. I'm sure putting up this voting round was complicated (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Thanks Steve for your great work. Beside the 476 bow-ties, the next L3P version would like to comment: WARNING "X44.DAT" Line 127: Identical to line 40: 5 24 0 -7 -6 0 -9 -7 2.68 -6.47 -6 -2.68 -6.47 -6 WARNING "X44.DAT" Line 142: Identical to line (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
Chris Dee wrote... (...) "L3P -check" has always been able to spot singular matrices, simply because POV cannot handle them. L3Lab uses the same file parser as L3P (which BTW is public available in ldglite). However, L3Lab could easily render edge (...) (25 years ago, 18-Apr-00, to lugnet.cad.dev)
 
  (canceled)
 
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Auch, another error? Thank you, Lars, I'll fix it and send it to Steve Bliss, hopefully making it to the next update. Fredrik (25 years ago, 19-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) LDraw code? With a circular shape having 16 segments, not eight as in your diagrams. If you think that is simpler for the parts authors (or that it requires a "tiny extra effort") as compared to superimposing a quad and a disc (two lines of (...) (25 years ago, 19-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I only used eight, to simplify the drawing, which was made by hand. (...) All I say is that the benefits from it overweight the extra effort. (...) Correct, Can't argue with that ! But this problem surfaces, due to the intrinsic polygonized (...) (25 years ago, 19-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I meant to say "no point _for_me_ to discuss anymore". Sorry for sounding harsh. (...) I still don't agree. But as I said (or rather meant to say, English isn't my primary language, so I sometimes goof) we probably don't need to discuss this (...) (25 years ago, 19-Apr-00, to lugnet.cad.dev)
 
  Re: Comments on parts up for vote- Pt 1
 
(...) No, it's a good thing to have a program to identify these things. Even though edges-only primitives can't be BFC'ed, I'm guessing there could be other advantages to avoiding singular matrices, and few disadvantages. Steve (25 years ago, 19-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Hmm. There's a couple of problems with your examples. In overdraw2.png, you are having the quad intersect the circle exactly at two vertices. If the quad was a bit narrower, you would need to split the two original triangles, retaining the (...) (25 years ago, 19-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I believe that's why I have drawn "overdraw3.png" ! ;) (...) Damn, I missed that one, but just need to split the pentagon into a quad and a triangle. (...) As I said, the disc as only 8 slices to simplify, with the regular 16 you would save (...) (25 years ago, 20-Apr-00, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) How about the following name-changes: 6041.DAT Propeller 3 Blade 1.5 Diameter 4617.DAT Propeller 3 Blade 5.5 Diameter The only other information morphological information would be connection-type, but I don't see a strong need for that. Here's (...) (25 years ago, 24-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Sounds good to me! (...) I think they should be combined. We don't have that many propellers/rotors anyway. Besides, it is probably better to put them in the same category, as the user will spend less time searching for individual parts. (...) (25 years ago, 24-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Cool. I'll look at the other propellors (note LDraw-spelling) and rotors to see if their names can be adjusted to match. (...) True, but what category? The differences between propellors and rotors are small (for our purposes), but the (...) (25 years ago, 24-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) While there is a strong difference in the real world, the difference if fairly small in the LEGO world. Take 6041.dat, for example, which is, like you said, a boat propellor. But you will find this one on many "aircraft" like official (...) (25 years ago, 24-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) On second thoughts, perhaps we should add even more info? How about adding "angled blade" or some info about the number of studs on the blades, if that applies? And another thing: The 6041 has a larger diameter than 1.5, right? It must be the (...) (25 years ago, 25-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) Here are the current parts from the Propellor and Rotor categories: 4745.DAT Propellor 2 Blade 6040.DAT Propellor Housing 3480.DAT Rotor 2 Blade Helicopter Tail 2421.DAT Rotor 3 Blade 2479.DAT Rotor 4 Blade 5 Diameter And the next update is (...) (25 years ago, 25-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
Steve Bliss <blisses@worldnet.att.net> wrote in message news:3dcbgs44ugldbko...4ax.com... (...) You probably didn't intend to have identical names here. (...) Wouldn't that be "Brick 2 x 2 x 2/3 w/ Propellor Housing"? The Propellor category works (...) (25 years ago, 25-Apr-00, to lugnet.cad.dev)
 
  Re: Voting Open for LCAD Parts Update 2000-01
 
(...) I didn't intend not to. I don't have a particular aversion to duplicate names, although I realize that other people do. (...) I suppose. Either way, I don't really like it. :( (...) <grin> Might as well just leave it as Propellor Housing. Now, (...) (25 years ago, 25-Apr-00, to lugnet.cad.dev)

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