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Subject: 
Re: LPub question: how to change angle of view for instructions
Newsgroups: 
lugnet.cad, lugnet.inst
Date: 
Sat, 2 Aug 2003 12:12:36 GMT
Viewed: 
1939 times
  
In lugnet.cad, Allan Bedford wrote:
<snip>
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?

Yes, and LPub obviously.  A rotation step is like a step, but it also rotates
the model about the origin, which has the same effect as changing the camera
view angle.  Rotation steps are wonderful, because you can have the view change
from step to step if need be.  If you need to flip the model over, or around to
make the addition of a part visible, you just use a rotation step. When you end
rotation, everything goes back to the default view.


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.

Yes, and no.  It expects you to use rotation steps to rotate the model so you
get the effect you want.  Relative to the rotation specified, LPub's angle is
hard coded.


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.

Alas,  I don't use LeoCAD.  The nice part about using rotation steps is that the
view angle controls are *in the DAT* file.


Anyway... I think it all worked out.  :)

Thanks!
Allan B.

Kevin



Message is in Reply To:
  Re: LPub question: how to change angle of view for instructions
 
(...) 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 (...) (21 years ago, 2-Aug-03, to lugnet.cad, lugnet.inst)

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