Subject:
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Re: LPub 4 Callouts (and other questions)
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Newsgroups:
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lugnet.cad
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Date:
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Mon, 7 Dec 2009 18:08:22 GMT
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Viewed:
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22515 times
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In lugnet.cad, Don Heyse wrote:
> In lugnet.cad, Kevin L. Clague wrote:
> > In lugnet.cad, Eric Albrecht wrote:
> > > In lugnet.cad, Jaco van der Molen wrote:
> > > > OK, here goes.
> > > > When an assembly is too large to fit on the page, LPub crops the image.
> > > > When one drags the assembly image to another position LPub does not redraw
> > > > the image.
> > > > See:
> > > > http://www.binarybricks.nl/test/redraw.html
> > >
> > > Thanks, that's exactly what I meant. I do instructions for multi thousand
> > > part models, so it is quite common for the assembly not to fit on the page.
> > > The workaround I have used so far is to make my own custom assembly images
> > > from LView and them manually put them in the final PDF file. That's what I
> > > did <http://www.brickshelf.com/cgi-bin/gallery.cgi?f=381742 here>.
> >
> > In the case of L3P and POV-Ray, there was the ability for look at coordinates
> > so that you could control what is the center of the viewed image.
>
> I'm not sure what you mean by this. Both LDView and ldglite have ways
> to share the coordinates used for a particular viewpoint. Something like
> this:
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> http://ldglite.sourceforge.net/ldglitepov.html
>
> Or do you just want a way to set the "look at" point on the command line.
> I believe that's also available in both programs.
>
> > If such a mechanism were to exist in LDView and LDGLite, LPub could support
> > that. This combined with the renderers cropping the image to a known size,
> > would meet your needs.
> >
> > I certainly understand the need. Imagine trying to do building instructions
> > for 25 foot buildings. Adam Tucker asked me about this issue years ago at
> > the event that became Brickworld.
> >
> > Kevin
LPub knows what parts are added at each step. LPub could find the min/max
locations of all parts added and have the look at coordinate be (min_x+max_x)/2,
(min_y+max_y)/2, (min_z+max_z)/2. This would give a general idea of where to
look.
One question is, though can I do this all the time, or should I do it as a
special case? LPub always find the min/max (for all dimensions) for the parts
in the model, and then centers the model on (min_x+max_x)/2, (min_y+max_y)/2,
(min_z+max_z)/2. Maybe now I center it on the "center" of the added parts.
I'll have to play with it and see what I can come up with. I've been away from
LPub for a while and it is hard to ramp back up, but that portion of the code is
pretty straightforward.
Kevin
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Message has 1 Reply:
 | | Re: LPub 4 Callouts (and other questions)
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| In lugnet.cad, Kevin L. Clague wrote: <snip> (...) Pardon me replying to my own post..... The above may help with LPub showing the right portion of a large mode, but it doesn't help with cropping the image size to contain what has changed, which I (...) (17 years ago, 7-Dec-09, to lugnet.cad)
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Message is in Reply To:
| | Re: LPub 4 Callouts (and other questions)
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| (...) I'm not sure what you mean by this. Both LDView and ldglite have ways to share the coordinates used for a particular viewpoint. Something like this: (URL) do you just want a way to set the "look at" point on the command line. I believe that's (...) (17 years ago, 6-Dec-09, to lugnet.cad)
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