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Start out with Friends and Junior Models - karen lauro - 2017-11-27

Hi, I just finished Lego Software Power Tools book. So it is time for me to get building. I am planning on building some Friends and Junior models we have the real blocks at home.

There will be parts that are not in the library, e.g. animals and awnings. Is there something that describes going from a set of multiview images to 3d model in the Ldraw tool environment?

Also is LEGO City Town Fun in the Park - 60134 anywhere in the pipeline?

[url=https://www.amazon.com/LEGO-City-Town-Fun-Park/dp/B01CU9WX08/ref=sr_1_1?ie=UTF8&qid=1511818105&sr=8-1&keywords=lego+fun+in+the+park+city+people][/url]


RE: Start out with Friends and Junior Models - Philippe Hurbain - 2017-11-30

Sorry for the late answer... and welcome aboard!
Quote:Is there something that describes going from a set of multiview images to 3d model in the Ldraw tool environment?
Unfortunately there is little or no descrition of LDraw parts creation, it's mostly "oral tradition"! Of course we are here to answer your questions...
The tools of choice to create LDraw parts are LDPartEditor and (to create patterns) LDPatternCreator, both programs written by Nils Schmidt.
As for "multiview images to LDraw", do you mean creation of a 3D model using a photogrammetry tool then conversion into a LDraw parts? If so, the conversion is the easy part, first get your 3D model into STL ASCII file format (most 3D programs support this format) then use stl2dat conversion program. But the photogrammetry part is tougher, I was not able to get usable results so far...


RE: Start out with Friends and Junior Models - Willy Tschager - 2017-11-30

(2017-11-30, 10:57)Philippe Hurbain Wrote: Sorry for the late answer... and welcome aboard!
Quote:Is there something that describes going from a set of multiview images to 3d model in the Ldraw tool environment?
Unfortunately there is little or no descrition of LDraw parts creation, it's mostly "oral tradition"!

A very basic tutorial can be found on my site:

http://www.holly-wood.it/ldraw/authoring-en.html

w.


RE: Start out with Friends and Junior Models - karen lauro - 2017-12-01

(2017-11-30, 10:57)Philippe Hurbain Wrote: Sorry for the late answer... and welcome aboard!
Quote:Is there something that describes going from a set of multiview images to 3d model in the Ldraw tool environment?
Unfortunately there is little or no descrition of LDraw parts creation, it's mostly "oral tradition"! Of course we are here to answer your questions...
The tools of choice to create LDraw parts are LDPartEditor and (to create patterns) LDPatternCreator, both programs written by Nils Schmidt.
As for "multiview images to LDraw", do you mean creation of a 3D model using a photogrammetry tool then conversion into a LDraw parts? If so, the conversion is the easy part, first get your 3D model into STL ASCII file format (most 3D programs support this format) then use stl2dat conversion program. But the photogrammetry part is tougher, I was not able to get usable results so far...
Thank you. I was thinking of structure from motion algorithm. I do robotics/AI/multi-sensor fusion apps. I'll give these a try.


RE: Start out with Friends and Junior Models - Philippe Hurbain - 2017-12-01

(2017-12-01, 14:47)karen lauro Wrote: Thank you. I was thinking of structure from motion algorithm. I do robotics/AI/multi-sensor fusion apps. I'll give these a try.
I'll be happy to follow your results!


RE: Start out with Friends and Junior Models - karen lauro - 2017-12-01

(2017-11-30, 11:25)Willy Tschager Wrote:
(2017-11-30, 10:57)Philippe Hurbain Wrote: Sorry for the late answer... and welcome aboard!
Unfortunately there is little or no descrition of LDraw parts creation, it's mostly "oral tradition"!

A very basic tutorial can be found on my site:

http://www.holly-wood.it/ldraw/authoring-en.html

w.

Thank you, your tutorial is great for geometrically regular parts. But it is less clear how I can use these tools for parts like 6023093 or 6033016. [Image: 6023093.jpg] or [Image: 6033016.jpg]


RE: Start out with Friends and Junior Models - Philippe Hurbain - 2017-12-01

The poodle, ref. 11575, is not available in LDraw library. But it is available in LDD, and thanks to a conversion tool is available from http://www.digital-bricks.de/en/file.php?part=11575 . This raw converted part is not completely up to LDraw standards and needs a bit of polishing, but it's a very good base!

The sign is in LDraw library, 13459.dat (adapted from LDD data too by yours truely!)


RE: Start out with Friends and Junior Models - karen lauro - 2017-12-01

(2017-12-01, 15:48)Philippe Hurbain Wrote: The poodle, ref. 11575, is not available in LDraw library. But it is available in LDD, and thanks to a conversion tool is available from http://www.digital-bricks.de/en/file.php?part=11575 . This raw converted part is not completely up to LDraw standards and needs a bit of polishing, but it's a very good base!

The sign is in LDraw library, 13459.dat (adapted from LDD data too by yours truely!)

Thank you. Looks like I will need to learn about LDD, too.


RE: Start out with Friends and Junior Models - karen lauro - 2017-12-02

[attachment=2963]
(2017-11-30, 10:57)Philippe Hurbain Wrote: Sorry for the late answer... and welcome aboard!
Quote:Is there something that describes going from a set of multiview images to 3d model in the Ldraw tool environment?
Unfortunately there is little or no descrition of LDraw parts creation, it's mostly "oral tradition"! Of course we are here to answer your questions...
The tools of choice to create LDraw parts are LDPartEditor and (to create patterns) LDPatternCreator, both programs written by Nils Schmidt.
As for "multiview images to LDraw", do you mean creation of a 3D model using a photogrammetry tool then conversion into a LDraw parts? If so, the conversion is the easy part, first get your 3D model into STL ASCII file format (most 3D programs support this format) then use stl2dat conversion program. But the photogrammetry part is tougher, I was not able to get usable results so far...

Here is the incomplete model so far. I am now running into missing parts. 60616 Glass Door For Frame 1X4X6

10314 Brick 1X4X1 1/3. These should exist. I just do not know how to find them.


RE: Start out with Friends and Junior Models - karen lauro - 2017-12-02

I was also running into problems knowing when the glass was properly inserted into frames. I was assuming they both should have the same origin, but that seems a bit off.