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Stickers with identical d...
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Ideas 2025
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Possible duplicate faces ...
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Step rotation on Z issue
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Missing Parts
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  Thin Wires
Posted by: Brian Williams - 2021-01-27, 22:37 - Forum: Part Requests - Replies (3)

I'm using Bricklink Studio to render instructions containing 3rd party LED lighting components.  Philo was kind enough to generate some draft Brickstuff elements, and I have created others in Part Designer.  But I've hit a wall rendering the thin LED wires.  Studio supports flex hoses (painfully) but the PartDesigner doesn't support flex properties.  

Would anyone able to create a 10 stud long section of .25mm hose will connections and flex properties in tact?  I suspect twisted wires is complicated so I'd be happy with a single strand.

- Brian Williams

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  Incorrect LEGO ID colour in LDConfig.ldr
Posted by: Denis - 2021-01-27, 9:17 - Forum: Official File Specifications/Standards - Replies (7)

Hi there,

Just wanted to let you know that I spotted a possible colour ID mismatch in the LDConfig.ldr file.

In that file, the LEGO colour ID 147 has two different LDraw colour code matches: 62 and 178. In the former case the LEGO colour is named "Metallic Dark Green", which is incorrect. I'm pretty certain that the LEGO ID should be 186 in that case.

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  Vintage LEGO papercraft
Posted by: Fernando Fiorenzano - 2021-01-26, 14:45 - Forum: Off-Topic - Replies (14)

I made some LEGO papercraft...

621-2: Shell Tanker Truck
648-1: Service Station
345-1: House with Mini Wheel Car (only the Car)

I hope you like these models. Big Grin 

   

UPDATE 21/02/2021

The complete diorama, now I stop because I have no more space for models ...
345-1 - House with Mini Wheel Car (the House)
410-1 - Payloader
648-1 - Service Station
601-2 - Tow Truck
608-1 - Kiosk
621-2 - Shell Tanker Truck
656-1 - Car and Caravan
344-1 - Bungalow
345-1 - House with Mini Wheel Car (the Car)

   

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  MLCad.ini 2020-03 update now available
Posted by: Willy Tschager - 2021-01-26, 14:21 - Forum: LDraw.org Announcements - No Replies

Hi folks,

I just updated the MLCad.ini file accordingly to the latest LDraw.org parts update 2020-03. The .ini file defines (among other things) the parts available in MLCad's, LEOCad's and Bricksmith's minifigure generator.

Download the file from my website: http://www.holly-wood.it/mlcad/mlcad_ini-en.html

Bye, w.

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  Ring approximation calculation
Posted by: Philippe Hurbain - 2021-01-25, 18:09 - Forum: Parts Authoring - Replies (1)

Following review of this part, Magnus asked for my method to calculate ring approximations... as it maybe helpful for many people, I answer here...

Original pattern used a lot of thing rings to get "precise" dimensions, though this is mostly useless since measurements on prints (and prints themselves!) are pretty approximative.

Code:
1 0 0 12.25 -10 .5 0 0 0 0 .5 0 1 0 4-4rin14.dat
1 0 0 12.25 -10 .25 0 0 0 0 .25 0 1 0 4-4rin30.dat
1 4 0 12.25 -10 .125 0 0 0 0 .125 0 1 0 4-4ring62.dat
1 4 0 12.25 -10 1.125 0 0 0 0 1.125 0 1 0 4-4ring7.dat
1 4 0 12.25 -10 .25 0 0 0 0 .25 0 1 0 4-4rin36.dat
1 0 0 12.25 -10 .125 0 0 0 0 .125 0 1 0 4-4ring74.dat
1 0 0 12.25 -10 .625 0 0 0 0 .625 0 1 0 4-4rin15.dat
1 0 0 12.25 -10 .25 0 0 0 0 .25 0 1 0 4-4rin40.dat
1 16 0 12.25 -10 10.25 0 0 0 0 10.25 0 1 0 4-4ndis.dat
I propose to simplify this code with an approximation:
Code:
1 0 0 12.25 -10 .77778 0 0 0 0 .77778 0 1 0 4-4ring9.dat
1 4 0 12.25 -10 1.55556 0 0 0 0 1.55556 0 1 0 4-4ring5.dat
1 0 0 12.25 -10 1.03704 0 0 0 0 1.03704 0 1 0 4-4ring9.dat
1 16 0 12.25 -10 10.37037 0 0 0 0 10.37037 0 1 0 4-4ndis.dat
The method to get it is simple, and works well if the ring thickness is relatively low compared to its radius. I'll start from inner ring and progress to outer (here I don't want to need changes to the inner delicate pattern!), but you can do it also in the other order.
  • First ring: inner diameter is 7 (14/2), desired thickness is 0.75.  7/0.75=9.3333. Round to nearest integer, we get a ring9. To fit inner diameter, thickness must be 7/9=0.777777777. Close enough to the 0.75 target.
  • Second ring: Inner diameter is 7.77777777 (0.777777777*(9+1)). Previous pattern outer diameter is 37*.25=9.25. Desired thickness is thus 9.25-7.77777777=1.47222222. Second ring will be obtained as int(7.77777777777/1.47222222222) -> ring5. To fit inner diameter, thickness must be 7.77777777/5=1.5555555. A bit further than the 1.47 target, but good enough...
  • And third ring: needed thickness is 0.91666666, we get int(9.3333333333/0.9166666666)=10, with a thickness of 0.93333333333
Don't ask me why I proposed a ring9 for outer ring, ring10 is better!

Of course if you calculate from outside to inside, you must compensate for the "+1" between inner and outer radii of LDraw rings...
Formula is int(inner diameter / desired thickness) in the first case, int(outer diameter / desired thickness)-1 for the second.

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  Color Space
Posted by: Leonardo Zide - 2021-01-24, 19:57 - Forum: Official File Specifications/Standards - No Replies

I couldn't find this on the spec so I thought I'd ask here and maybe it could be updated to make it clear.

Are the colors listed in LDConfig.ldr in linear or sRGB color space? What about alpha?

Does the same apply to the PNGs in the TEXMAP extension?

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Exclamation Website bug/vulnerability
Posted by: Mou - 2021-01-22, 15:39 - Forum: Website Suggestions/Requests/Discussion - Replies (1)

Hi, it's my first post 
i am actually try to contact webmaster//LDraw developper to talk about website critical vulnerability that i found during my project search.

Thx to contact me or at least give me username of appropriate user

BTW is there any discord/slack/chat server that ldraw community used to keep in touch?

PS: send email on webmaster[at]ldraw[dot]org, yesterday

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  Curved Patterned Part/Sticker Question
Posted by: Greg Takacs - 2021-01-20, 23:35 - Forum: Parts Authoring - Replies (4)

My question pertains to patterned parts/stickers. Once you add pattern to the curved part, even if the original curvature of the sticker could have been represented with a primitive the new, color specific elements simply cannot.

At what angular resolution should the resulting sticker/part be exported at using nothing but a poly-mesh of triangles?

Also, for curved stickers/patterns is the preferred method to create ldraw mesh for them or is it better to use the PNG map instead?

Next question: what should be the smallest triangle face length on a patterned part or is there a general guideline as to the number of vertexes a part should have?

Last question:
How do you handle a part with sides that are curved primitives (semi circles) but the patterned curved side being defined using only triangles? 22.5 degree seems rather low for the curved part but leaving the sides as primitives is more ideal, however the rendered curved patterned part (see the Sian brake calipers) must match up to it and if it's done at a higher resolution things look weird in LDCad bit if it's rendered at only 22.5 degree faces it looks poor when rendered in Stud.io.

I have created a few patterned pieces already but I want to make sure they're matching guideline standards before I even make an attempt at submitting them.

   

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  i need someone to help me make this robot arm work
Posted by: Mcdichael - 2021-01-18, 20:23 - Forum: Help - Replies (3)

there's this robot arm made by Magnus Forsberg that refuses to import correctly into stud.io's part designer program correctly, whenever I import it, it says "Parts Not Found: s/62691s01.dat", and it only loads the front and the little arm connector piece, I tried fixing it myself but it's so frustrating, so i decided to give in and ask the Ldraw forums for help, also make sure to tell me if this happened to anyone else and if it happens on any other Lego building program, I want to make a cyborg army but it's not the same without the robot arm that has, like, a weapon or stud or something connected on it.
also here's the link to the part I'm having trouble with: https://www.ldraw.org/parts/official-par...rtid=62691
oh and btw, i got the version of the arm off these torsos, https://www.ldraw.org/cgi-bin/ptdetail.c.../63208.dat and https://www.ldraw.org/cgi-bin/ptdetail.c...208p01.dat, but it ended up unable to be colored, as only the stud connector could be colored, and i have no idea how to make the whole thing able to be colored in Stud.io.

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Thumbs Up Parts 72490c01, 72490a, & 72490b
Posted by: Matthew - 2021-01-18, 19:39 - Forum: Part Requests - Replies (8)

Hello, I was just trying to build a Lego Blimp/Zeppelin for Lego Ideas in Stud.io, but sadly none of the parts for the actual envelope of the blimp/zeppelin seem to exist.  I did get the gondola completed as I intended, but sadly without the actual balloon, (or envelope as it's know to those who know airships), I can't make the upload.  I tried asking the folks at Bricklink to help with making the envelope, but sadly they couldn't seem to find a 3d model of said balloon.  So, anybody here think they can help with that?  Please?  It'd be really appreciated if somebody here could, especially if you could make all three parts, the blimp container assembly (72490c01), the blimp container body (72490a), and the blimp container tail (72490b) both with and without their stickers, (especially since I plan on using a plain blimp container body with the tail fin stickers on the blimp container tail on my Lego Ideas project, so having the two ends separate and the complete assembly with and without stickers would be very helpful).  So, yeah, just thought I'd ask.  Rockatoa, Brickticks out!

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