Subject:
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Re: Need LDD 2.0 Help from the Experts on Making Instructions
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Newsgroups:
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lugnet.cad.ldd
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Date:
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Wed, 4 Apr 2007 01:02:47 GMT
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Viewed:
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29229 times
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In lugnet.cad.ldd, Christopher Masi wrote:
> 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
I suspect it's a camera angle. Whether or not it's actually implemented at the
moment is a different matter.
Tim
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