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 CAD / Development / 8082 (-40)
  Re: How do I write a header file for an updated part...
 
(...) Good idea. I'll do that before I send the parts in. (...) Hm, you think the 1x4 brick is common enough? Methinks the answer is yes- I'll separate the unfaced portion. I'm also submitting a BFC'd box4t because I used that for the brick's body. (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: question/problem with some flag parts
 
(...) I'm pretty sure there is not a 6 x 3 1/3 flag, and seeing as the original author titled it "6 x 4" I suspect this was just an error in authoring (and review !). I'll liaise with the author to arrange a fix. Chris (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: How do I write a header file for an updated part...
 
(...) I've not discussed with Steve, but I'd go for option 2 - write a new header but credit the previous author in a subsidiary comment. If the existing author is still active, it would be polite to let them know what you're doing. Please re-use (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  How do I write a header file for an updated part...
 
...when the new version is redone from scratch? In the past, I've done some minor reworking of files. In these cases, I simply added the date, my name, and a description of what I'd done to the file. But what about when I fire up Notepad and start (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: question/problem with some flag parts
 
You're right. The 43.dat isn't a 6 x 4 flag. But I can't tell you if there exists a real 6 x 3 1/3 one. The "Jolly Roger" one is named correct. Does anybody want to fix this? CU Bernd Jaco van der Molen <jmolen@globalxs.nl> schrieb im Newsbeitrag (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: question/problem with some flag parts
 
Hmm... The flag 6 x 4 (#43) is actually 6 x 3 1/3. Flag 6 x 4 (#43P01) is 6 x 4. Strange. I do not own any of these two parts, but I think part 43 is either mesured wrong or the description is wrong. Or part 43P01 is wrong... Jaco "Jonathan Wilson" (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  question/problem with some flag parts
 
Can someone explain why the "flag 6 x 4" and the "flat 6 x 4 with jolly roger pattern" are different sizes? Is this an error? (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: Why should parts not have vertices lying along edges?
 
(...) I wouldn't ignore it lightly as it can have many adverse effects. You get little holes from from the roundoff errors. You can also see it in lighting problems with more advanced renderers such as ldview and POV. Here's an old example of the (...) (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Re: Why should parts not have vertices lying along edges?
 
(...) My opinion is that this isn't a significant enough problem to worry about. Further more, I consider this is a renderer limitation and not a problem with the part itself. Therefore, feel free to ignore this if it suits your purposes. -Orion (22 years ago, 12-Dec-02, to lugnet.cad.dev)
 
  Why should parts not have vertices lying along edges?
 
For this discussion, I'm using the term "polygon" to refer to quads or triangles. When I say "primitive", I'm talking about more complex primitives such as discs and non-discs. And when I refer to "edges", I'm talking about line segments between a (...) (22 years ago, 11-Dec-02, to lugnet.cad.dev)
 
  Numbers Report - 5 Dec. 2002
 
Section Totals 028 certified files. 184 files need admin review. 193 files need more votes. 244 have uncertified subfiles. 136 held files. 785 files total. For comparison: 2002-12-05 - 028 / 184 / 193 / 244 / 136 (785) 2002-10-21 - 159 / 153 / 221 / (...) (22 years ago, 5-Dec-02, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw)
 
  Re: True Type fonts and LDraw files
 
Niels, I'm not sure what to do about arrows that are hidden because the view angle hides it. Do you have any ideas? It seems to me that it is just like any other part that is hidden from view. You can't see it. Do you have ideas how to work around (...) (22 years ago, 3-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
Thanks Jeroen, I guess there are multiple issues here. My original thoughts were primarily restricted to my LPub centric perspective, where we create step by step building instructions with a fixed view angle, and use rotation steps to virtually (...) (22 years ago, 3-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
Hmm, you could use the IFPOV and ENDPOV statements: 0 IFPOV 0 text { ttf "arial.ttf" // check your fonts directory for the proper names 0 "place your text here" // well, place your text there 0 1, // thickness of text (text will be 3D, dunno what (...) (22 years ago, 3-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
(...) MLCAD indeed has a BACKGROUND meta commmand that places an image as a background. This image always faces the "camera", indepedently of the view angle. It will not work in al instances (it might get obscured by the model), but it is the only (...) (22 years ago, 3-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
It is not only about adding text to a 3D world or a 2D render of it, but also about arrows. Arrows are (can be) used to point to a specific part or a group of parts. What about when this (these) part(s) are not visible in a different camera (...) (22 years ago, 3-Dec-02, to lugnet.cad.dev)
 
  Re: 24-tooth Technic gear confusion - Part(s) 3648, 3648a, x187
 
Thanks all. For now, I guess I will use just 3648 and indicate the appropriate version in the notes column. Hmm...maybe I need to add "learn how to create LDraw parts" to my ever-growing LEGO ToDo List (although I somehow suspect that 3648 might not (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev, lugnet.db.inv)
 
  Re: True Type fonts and LDraw files
 
I was assuming that the user knows the view angle as well as any MLCad rotation steps that are in place when laying out the building instructions, but maybe this is too much work. If I do it as a post processing step, then the user is going to have (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
(...) Not necessarily. I don't always use the default viewpoint when rendering. (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
(...) As far as I know, you can't do that, but I suppose you could do it with a new META statement. (...) I think there might be some LDRAW programs out there with a notion of a floor or background image. Those are 2D objects that may or may not (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
Quoting Don Heyse <dheyse@hotmail.spam...away.com>: (...) couldn't you say the text "box" is anchored in a point in space, and ALWAYS faces the camera? Or is there a situation where there's more than one camera at the same time? (I don't know much (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  Re: True Type fonts and LDraw files
 
(...) The one thing to watch out for here is that floating text will only look right when viewed from a particular angle. Don't forget that LDraw files contain 3D data which can be viewed from all directions. Text annotation seems to me more like a (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  True Type fonts and LDraw files
 
Hi, I've been doing a lot of work on automating the creation of building instructions lately, and have been studying various LEGO Constructopedias. There are places where LEGO uses text to anotate things in their step images (like 180 degree (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev)
 
  Re: 24-tooth Technic gear confusion - Part(s) 3648, 3648a, x187
 
Hi, Two comments: 1. Checking Technica might help (URL) Also, maybe cross-posting to technic and robotics might have been a good idea ... people there tend to know a great deal about Technic parts - specially when earlier, more fragile ones have (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev, lugnet.db.inv)
 
  Re: Callin' all numbers
 
16 - Adam Howard User since: 1997 Author since: 1998 Parts made: 4, +2 modifications Programs I use: Rhinoceros- 3D modeling dxf2dat LDAO Wordpad Notepad Excel L3P L3Lab LDView LDLite MLCad LEDIT (22 years ago, 2-Dec-02, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw, lugnet.cad)
 
  Re: 24-tooth Technic gear confusion - Part(s) 3648, 3648a, x187
 
(...) In general, I do what Steve tells me to do :) I do agree that everything should be the "generic" number unless it's specifically known to be a certain revision. I believe that's how things are on peeron now - the only thing that has x187 is (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev, lugnet.db.inv)
 
  Re: 24-tooth Technic gear confusion - Part(s) 3648, 3648a, x187
 
In lugnet.cad.dev, Lance Hopenwasser writes: [snipped description of the situation] (...) *Eventually*, I'd expect there to be a 3648a and a 3648b. That is, if the other version is ever rendered for LDraw (assuming it hasn't already). In LDraw, when (...) (22 years ago, 2-Dec-02, to lugnet.cad.dev, lugnet.db.brictionary, lugnet.db.inv)
 
  Re: Glass... to BFC or not to BFC?
 
(...) Yes it does. (...) Right. Steve (22 years ago, 30-Nov-02, to lugnet.cad.dev)
 
  LDraw.org Parts Update 2002-05 Now Available
 
This fifth update for 2002 contains 199 files, including 116 new parts. As always, along with the new parts, there are various fixes, new primitives, and name changes. The Parts Tracker is now up and running again, but the 2002-05 parts preview (...) (22 years ago, 30-Nov-02, to lugnet.announce, lugnet.cad, lugnet.cad.dev) ! 
 
  Re: Glass... to BFC or not to BFC?
 
Doesn't the BFC "spec" mention transparency? The renderer can easily tell when something is transparent, and do BFC processing (or lack thereof) appropriately. This is necessary for correct handling of standard parts that are sometimes transparent, (...) (22 years ago, 30-Nov-02, to lugnet.cad.dev)
 
  [Parts Tracker] Working on Update 2002-05
 
I'm going to be working on Update 2002-05 this weekend. During this time, the Parts Tracker will be shutdown for file submissions and review posting. Thank you for your patience. Chris (22 years ago, 29-Nov-02, to lugnet.cad.dev)
 
  Re: Capitalization of filenames
 
(...) Basically, the LDraw filenames should be considered case-insensitive. The only time I'd want to have uppercase .DAT extensions is to references to STUD*.DAT that should always be drawn, regardless of stud-drawing mode. This is an old (...) (22 years ago, 29-Nov-02, to lugnet.cad.dev)
 
  Re: Glass... to BFC or not to BFC?
 
(...) Right. For some renderers. Basically, in standard LDraw renderers, the backside surfaces can still be culled, because multiple layers of transparent surfaces look the same as a single layer. In renderers that produce darker/more opaque areas (...) (22 years ago, 29-Nov-02, to lugnet.cad.dev)
 
  Re: Capitalization of filenames
 
(...) If you want to stay on friendly terms with people using case-sensitive file systems, you stick to lower-case file names. Play well, Jacob (who uses case-sensitive file systems ;-) (22 years ago, 28-Nov-02, to lugnet.cad.dev)
 
  24-tooth Technic gear confusion - Part(s) 3648, 3648a, x187
 
I am really confused about the variations on the 24-tooth Technic gear which appear in quite a number of the sets I am attempting to inventory/verify. First of all there seem to be two major variations: the earlier one has three axle holes, and the (...) (22 years ago, 27-Nov-02, to lugnet.cad.dev, lugnet.db.brictionary, lugnet.db.inv)
 
  Re: Callin' all numbers
 
Bernd Broich (uploading parts as bbroich) * user since April 2001 * author since 2001 * parts made so far: official: 22 tracker: 25 thereof prim.: ~5 fixed parts: ~10 in progress/not released: 7 * programs: parts authoring: textpad: line (...) (22 years ago, 26-Nov-02, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw, lugnet.cad)
 
  Re: Callin' all numbers
 
14 - Jaco van der Molen User since: 1995 Parts Author since: 1997 Parts made: 14 parts Programs I use (to LDraw and make parts) -LEdit -Editpad -MLCad -L3Lab -LDView -POV-Ray 3.5 -Excel -Emacs -L3P(AO) -LDLite -JavaScript -LDDesignPad -More (...) (22 years ago, 26-Nov-02, to lugnet.cad.dev, lugnet.cad.dev.org.ldraw, lugnet.cad)
 
  Re: Capitalization of filenames
 
I think the reason for the capital .DAT extension is because LDraw was original DOS. If you install the original package under windows, all directories and files will be capitals as well. Furthermore I do not experience any problems with lower or (...) (22 years ago, 26-Nov-02, to lugnet.cad.dev)
 
  Capitalization of filenames
 
It seems like a while back, parts were supposed to have the extension ".DAT". But I'm seeing that all the links on ldraw.org seem to point to files with ".dat" at the end. What's the scoop- are lower-case filenames considered ideal now? Which ldraw (...) (22 years ago, 25-Nov-02, to lugnet.cad.dev)
 
  Re: Glass... to BFC or not to BFC?
 
(...) They require a different approach to optimization - visibility culling, not backface culling. You're right in thinking they should not be BFC. The exception I think might be a full box - which gets composited twice in a polygon system like (...) (22 years ago, 25-Nov-02, to lugnet.cad.dev)


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