Subject:
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Re: LPub question: how to change angle of view for instructions
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Newsgroups:
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lugnet.cad, lugnet.inst
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Date:
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Sat, 2 Aug 2003 11:17:13 GMT
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Viewed:
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1917 times
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In lugnet.cad, Kevin L. Clague wrote:
> In lugnet.cad, Allan Bedford wrote:
> > For the first couple of instruction sets I did, LPub seemed to point the camera
> > in almost exactly the direction I wanted, when producing instruction images.
> > Example:
> >
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=445276
> >
> > Lately though, it seems to have flipped around and is looking at the models from
> > the other side. Example:
> >
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=461317
> >
> > I prefer the first angle, since that's the direction the model generally faces
> > as I'm building it in LeoCAD. It's also the angle I presume, in cases where
> > brick locations might be ambiguous or confusing... I put them toward the 'back'
> > of the model first, so that they're not hidden by something closer to the front.
> > Then I put the nearer brick in the model in the next step.
> >
> > Anyway, I've tried playing with the camera angles on both the L3P > Camera tab
> > and also on the Building Instructions > Parts Images tab. Neither seems to
> > affect how the instruction images turn out. The first seems to have an effect
> > on creating the complete assembly, but the second seems to affect nothing.
> >
> > Is there something I'm missing? Or doing wrong? Have I changed a config by
> > accident? Is there some way to fix this? :)
>
> Hi Allen,
>
> MLCAD rotation steps are what define the camera angle for building
> instructions. That way you can reorient the camera at *any* time. I prefer
> relative rotation steps, but absolutes work as well.
Hi Kevin,
I'm not very familiar with MLCAD, I use LeoCAD as my main modelling tool. Is
the term 'rotation step' something specific to MLCAD?
Regardless, I decided to work on this problem again the other night. I opened
the original file for the model shown in the first URL above. I then turned on
the option to show the axis icon. I noted the general direction of the three
planes.
Then I opened the model shown in the second URL. And there was the answer.
Although the model appeared oriented in the direction I wanted, the position of
the axis icon showed it had somehow rotated 180 degrees. Or, it's probably more
accurate to say that by happy accident I had rotated the first couple models I
did, then without knowing started to use the 2nd position (which I believe is in
fact the LeoCAD default for a new model).
LPub uses a hard-coded view/angle when creating instruction images, is that
correct? That would explain the difference I see between the two models noted
in the URL's above.
So... my ham-fisted workaround was to use one of my two early models as a
positional template. In other words, I just opened the .dat file and chopped
out everything except the first couple of steps. So when I opened that file in
LeoCAD again, I had a base upon which to create my next model. (one that was
positioned the way I want) Probably not the most elegant approach, but I can't
figure out a better way right now. There is a 'rotate pieces' command in
LeoCAD, but it doesn't seem to work. There is the ability to rotate the view,
but this only changes the camera, not the model's actual position in space.
Anyway... I think it all worked out. :)
Thanks!
Allan B.
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