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Subject: 
Re: Need LDD 2.0 Help from the Experts on Making Instructions
Newsgroups: 
lugnet.cad.ldd
Date: 
Wed, 4 Apr 2007 00:43:03 GMT
Reply-To: 
cjmasi@*nogarbageplease*verizon#NoMoreSpam#.net
Viewed: 
27798 times
  
Tim Gould wrote:
--snip--

Nice reverse engineering.

exploded="true" angle="0" ax="0" ay="1" az="0" tx="0"
ty="9.9999990463256836" tz="0"

I know this one :)

Well some of it anyway... tx, ty and tz are the translation from the origin, ax,
ay, az define a unit vector and angle defines a rotation angle (in radians
IIRC). (tx,ty,tz) and angle define a rotation matrix

R=[t tx^2  + c     t tx ty - s tz  t tx tz + s ty
   t tx ty + s tz  t ty^2 + c      t ty tz - s tx
   t tx tz - s ty  t ty tz + s tx  t tz^2 + c     ]

c=cos(angle)
s=sin(angle)
t=1-c

--snip--
Chris

Tim

OK, but why would those things be specified in the directions area? The
directions refer to a part ID, and the part ID is defined in the model
group. Where the part ID is defined is also where the location of the
brick is defined.

Just thinking out loud,
Chris

--
http://mysite.verizon.net/cjmasi/lego/

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Message has 1 Reply:
  Re: Need LDD 2.0 Help from the Experts on Making Instructions
 
(...) I suspect it's a camera angle. Whether or not it's actually implemented at the moment is a different matter. Tim (17 years ago, 4-Apr-07, to lugnet.cad.ldd)

Message is in Reply To:
  Re: Need LDD 2.0 Help from the Experts on Making Instructions
 
--snip-- Nice reverse engineering. (...) I know this one :) Well some of it anyway... tx, ty and tz are the translation from the origin, ax, ay, az define a unit vector and angle defines a rotation angle (in radians IIRC). (tx,ty,tz) and angle (...) (17 years ago, 3-Apr-07, to lugnet.cad.ldd)

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