To LUGNET HomepageTo LUGNET News HomepageTo LUGNET Guide Homepage
 Help on Searching
 
Post new message to lugnet.cadOpen lugnet.cad in your NNTP NewsreaderTo LUGNET News Traffic PageSign In (Members)
 CAD / 10402
10401  |  10403
Subject: 
Re: LPub question: how to change angle of view for instructions
Newsgroups: 
lugnet.cad, lugnet.inst
Date: 
Sat, 2 Aug 2003 11:17:13 GMT
Viewed: 
3225 times
  
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.



Message has 1 Reply:
  Re: LPub question: how to change angle of view for instructions
 
In lugnet.cad, Allan Bedford wrote: <snip> (...) 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, (...) (21 years ago, 2-Aug-03, to lugnet.cad, lugnet.inst)

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

4 Messages in This Thread:

Entire Thread on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact

This Message and its Replies on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact
    

Custom Search

©2005 LUGNET. All rights reserved. - hosted by steinbruch.info GbR