Subject:
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Re: pictures at tracker
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 4 Jun 2002 17:25:23 GMT
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Viewed:
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848 times
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In lugnet.cad, Steve Bliss writes:
> In lugnet.cad, Don Heyse wrote:
> > If you want to do some testing I just built a preliminary version of
> > ldglite 0.9.6 on ldraw.org that supports -MSfilepath to change where
> > the picture file goes. I figured since -MS (case sensitive) says to
> > produce pics using the offscreen rendering, I might as well get more
> > mileage out of it by following it with an optional filename. Hmmm,
> > I'm starting to warm up to that = sign though... Maybe with the =
> > sign it'll go to a specific filename, without it filepath will just
> > be a directory. I'll have to think some more on that one.
>
> As some may have noticed (did I mention it already? I don't remember
> now), there are now images for some files on the tracker. An example
> is at <http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/30387.dat>.
>
> I'm having a problem -- ldglite sometimes saves the image, and
> sometimes it doesn't. And it's not giving me any reason why not.
> Below is part of the output from my 'build.all.images' script. Notice
> that there's no "Write PNG..." message for the first file, but there
> is for the second.
>
> Any thoughts on why this is happening?
>
> ======================================================================
> Generating file 48: parts/s/973ps7a.dat...
> command: /home/dheyse/ldglite.0.9.6/ldglite/ldglite -s.85 -l3 -Q -i1 -MS/home/httpd/www.ldraw.org/files/library/unofficial/images/parts/s/973ps7a.png parts/s/973ps7a.dat
Hmmm, it seems to skip the "Write PNG" message if I pass it an empty DAT
file. Checking the source, it appears to silently fail if it doesn't
find any pixels to save a picture of. It'll report "bmpsize = something"
before writing (or skipping) the png file if you turn on debugging with
the -g command line switch.
I think I know the problem. Ldglite calculates the extents of the image
based only on the edges and the conditional lines (for speed?). I'll
have to patch it up to also use quads and triangles in that calculation.
By the way, what sort of weirdness is going on with the LDRAWDIR path
that you need to specifically include the parts directory as part of
the path to the dat file?
Don
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Message has 2 Replies:
 | | Re: pictures at tracker
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| (...) Ah. I think that makes sense - the missing files I'm sure of are all subpart files, that are unlikely to have edges. (...) Heh. *That* library isn't actually the LDRAWDIR. Well, it is and it isn't. In order to render correctly, I've (...) (22 years ago, 4-Jun-02, to lugnet.cad)
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Message is in Reply To:
| | Re: pictures at tracker
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| (...) As some may have noticed (did I mention it already? I don't remember now), there are now images for some files on the tracker. An example is at (URL). I'm having a problem -- ldglite sometimes saves the image, and sometimes it doesn't. And (...) (22 years ago, 4-Jun-02, to lugnet.cad)
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