LDD LDraw export issues

[Renderbricks]

Can someone explain me why I get different and wrong results? Thanks a lot!

- I used the latest LDD and load the .lxf +++ result in picture 1

- I export to .ldr and load into LEOCad +++ result in picture 2: parts are missing, wrong placed and rotated

- I export to .ldr with the latest beta ldraw.xml and load into LEOCad +++ different result in picture 3 but looks more correct

- I set the custom parts library to the original LDRAW to get my modified studs with LEGO +++ result in picture 4: parts of the car wings and the rear mirrors will be replaced by small cubes

- I load the .ldr with LDRView or MLCad +++ result in picture 5: car wings parts complete but rear mirrors missing

Edited May 14, 2014 by virtualrepublic

[Darats]

Not a problem with Unofficial parts ?

[Renderbricks]

I just use a few unofficial parts for other models but I did not replace any official ones with them.

Edited May 14, 2014 by virtualrepublic

[Renderbricks]

It might be a problem with the latest LDD release (ldraw.xml)? Here's another export of an AT-AT. The Technic parts at the legs are wrong placed and rotated.

Edited May 14, 2014 by virtualrepublic

[Renderbricks]

I isolated the wrong parts and edited the ldraw.xml file. I need to find the right values.

+++ UPDATE +++

I can't work out the correct values. Here's the original data:

<!-- Technic Liftarm 1 x 3 with Rotation Socket 44224 21 -->

<Transformation ldraw="44224.dat" tx="0" ty="0" tz="0" ax="1" ay="0" az="0" angle="4.712389"/>

<!-- Technic Beam 3 with Rotation Pin 44225 21 -->

<Transformation ldraw="44225.dat" tx="0" ty="0" tz="0" ax="0" ay="0" az="1" angle="3.141593"/>

I tried to find a description what those angle values mean but failed. Moving the piece around is not a problem but rotating gives me a headache.

Edited May 15, 2014 by virtualrepublic

[Alcom1]

I isolated the wrong parts and edited the ldraw.xml file. I need to find the right values.

+++ UPDATE +++

I can't work out the correct values. Here's the original data:

<!-- Technic Liftarm 1 x 3 with Rotation Socket 44224 21 -->

<Transformation ldraw="44224.dat" tx="0" ty="0" tz="0" ax="1" ay="0" az="0" angle="4.712389"/>

<!-- Technic Beam 3 with Rotation Pin 44225 21 -->

<Transformation ldraw="44225.dat" tx="0" ty="0" tz="0" ax="0" ay="0" az="1" angle="3.141593"/>

I tried to find a description what those angle values mean but failed. Moving the piece around is not a problem but rotating gives me a headache.

I can't remember between tx or ax which is the translation and which is the normal for the rotation, but I can figure it out with a bit of experimentation. Angle appears to be in radians. I see you, Pi!

tx and the like are the translation directions, ax is the axis of rotation direction which doesn't have be a normal even though the .xml lists it as such.

Anyways I hacked out the rotation of both bricks thanks to my brilliant education in linear algebra and the internet. Ima go sleep. You can figure out the translations.

<!-- Technic Liftarm 1 x 3 with Rotation Socket 44224 21 -->

<Transformation ldraw="44224.dat" tx="0" ty="0" tz="0" ax="1" ay="-1" az="1" angle="2.094395"/>

<!-- Technic Beam 3 with Rotation Pin 44225 21 -->

<Transformation ldraw="44225.dat" tx="0" ty="0" tz="0" ax="-1" ay="-1" az="-1" angle="2.094395"/>

Edited May 15, 2014 by Alcom1

[___]

ax, ay, az...those should be angles on x, y and z axis, like if "ax=0 ay=-1 az=0.5 angle=2.500" it may simply mean that it rotates only on y axis CCW by whole value of "angle" (in radians as someone else before me correctly said) and 1/2 of that value on z axis in CW ;) +tx, ty, tz are translation (location) values as you may know...

That is my opinion, it is very easy to try change those values an see what it does in MLCAD/LeoCAD etc. ;) BTW I also corrected some bricks wrongly rotated by LDD export in ldraw.xml, absolutely no problem whatsoever

Edited May 25, 2014 by bublible