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  A 3/4-stud or not?
Posted by: Magnus Forsberg - 2014-07-15, 12:01 - Forum: Parts Authoring - Replies (6)

Hi,

On many window and door frames there is a rather odd stud.

   
We usually make them without using a stud primitive, or need to make a very uniqe, specially designed stud.

I had to make eight files for 4209, in normal and low resolution. They all have to be different since there is a logo on top of each stud.

   
Due to the fact that we still need to fool MLCad, and have a lo-res version, (including a Moved to-primitive), to every new stud, the number of uniqe files have to be twelve for every new part with a small hole in the stud. A uniqe set of of primitives that hardly will be reused.

I would like to introduce a 3/4-stud instead.

   
A single set of primitives that could be reused in many of the parts above.
They will help connection seeking software and will place the logo in a correct position.
The small hole is to be added as a single, reusable, non-rotationally sensitive subfile (or primitive).

I've tried this set-up in LDView and MLCad. It works fine.
How will it work in LDCad, SR3D Builder or Bricksmith? Or in any other software with stud substitution ability?

How should I do with studs that have a hole that isn't fully placed in one of the quarters, but in between?

Do all the frames have a logo on top of the stud with a small hole?
I don't have all the frames, but I know that 4209 do have small holes and a logo, and that the two parts with square holes (60594 and 60598) doesn't.

If we ignore the logo, it is possible to use a single file and rotate the gap to were it needs to be.

So, three questions.
Should we continue in making new studs for each part?
Or should we replace them with this 3/4-stud?
Or could we ignore the logo, and simplify it to a single stud?

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  98102 - Cockpit 8X6X2 M.Ø3.2 Shaft
Posted by: Nicola - 2014-07-14, 9:13 - Forum: Part Requests - Replies (3)

Hi there, i'm searching for this part..
Can't find with the ID, is there a similar part under different id? Or is someone working on it?

Thanks

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  Matrix "split"
Posted by: Santeri Piippo - 2014-07-13, 12:41 - Forum: Parts Authoring - Replies (3)

On the topic of matrix calculations, I believe it should be possible to split any given transformation matrix into two composing matrices where one would represent the rotation and the other would represent the scale. Essentially a matrix version of a "vector = unit_vector * scalar" equation, like a "matrix = rotation_matrix * scale_matrix" where rotation_matrix would contain the rotation of the matrix with no scaling and scale_matrix would be otherwise an identity matrix but with the scaling of the main matrix. Is this kind of split possible? If so, how to do it?

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  LDView POV output colors
Posted by: Michael Horvath - 2014-07-12, 0:45 - Forum: LDraw File Processing and Conversion - Replies (3)

The default colors of LDView's POV-Ray output are too light and washed out looking when rendered using POV-Ray 3.7 as opposed to POV-Ray 3.6. This is due to the way POV-Ray 3.7 handles gamma output differently than before. So I created the attached hotfix for lg_color.inc that repairs this issue. This fix was suggested to me at the POV-Ray newsgroup. It may not be perfect, but as you can see in the attached images the "saturated" version looks much closer to reality than the "unsaturated" version.

Update: changing each color statement to use the srgb keyword instead of rgb should do the trick just as well.



Attached Files Thumbnail(s)
       

.inc   lg_color_saturated.inc (Size: 12.23 KB / Downloads: 2)
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  Request for 98138pb010
Posted by: Stephen - 2014-07-11, 18:33 - Forum: Part Requests - Replies (4)

Flat Silver Tile, Round 1 x 1 with Gauge with Red Pointer Pattern

Would be great if someone could do this part.

Bricklink seems to suggest a part number of 98138pb010.
http://www.bricklink.com/search.asp?q=fl...le%20gauge

   

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  Tutorial: Adding unofficial LDraw parts to MLCad
Posted by: Willy Tschager - 2014-07-10, 13:52 - Forum: General LDraw.org Discussion - Replies (26)

Guys,

attached you'll find the first draft of my new tutorial: Adding unofficial LDraw parts to MLCad.

I would appreciate some feedback. Also your tips and tricks when working with unofficials are welcome.

w.



Attached Files
.pdf   Adding_unofficial_LDraw_parts_to_MLCad.pdf (Size: 472.46 KB / Downloads: 32)
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  parts beginning with "u"
Posted by: Michael Horvath - 2014-07-09, 23:21 - Forum: Part Requests - Replies (3)

Is there any way to rename the parts starting with the letter "u"? They make it frustrating to select a sub-model in MLCad's Add Part dialog when sorting the list by name, because you have to sort through all the "u"s. Thanks.

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  Turntable 2855 accuracy
Posted by: Stephen - 2014-07-09, 16:29 - Forum: Parts Authoring - Replies (3)

Is the 2855 "Technic Turntable Type 1 Top" known to be inaccurate at all?

I originally abandoned my attempt to position a gear to drive this turntable because it looked like what I was attempting was illegal, but now I think my desired position is fine and it's just an inaccurately defined 2855 part.

The enclosed MLCad screenshot shows the simplest example of the problem. All parts are correctly stud-aligned. But I've raised the red gears to highlight the problem. As you can see, the red gears actually cut into the body of the yellow turntable. I've included close-ups of how much the overlap occurs. I also added the grey gears just to show that no such problem exists between the grey and red gears. The problem is only with the turntable.

Can I safely assume that 8 and 24 tooth gears *can* be positioned as shown?

   



Attached Files
.ldr   2855test.ldr (Size: 780 bytes / Downloads: 0)
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  L3P 1.4 beta 20080930 - transparent parts not transparent enough?
Posted by: Michael Horvath - 2014-07-09, 3:14 - Forum: LDraw File Processing and Conversion - Replies (17)

I rendered the attached file using POV-Ray 3.7 and L3P 1.4 beta. Does anyone else also think the transparent glass is not transparent enough? Has anyone noticed this and made alterations to L3P's materials?



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  Request for 98397 (new handlebars)
Posted by: Ross Crawford - 2014-07-09, 2:58 - Forum: Part Requests - Replies (4)

I need this for a set of instructions I'm doing. I can do an approximate version that'll be OK, but if someone's already working on them, that'd be hoopy. I don't have the actual part.

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