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In lugnet.cad.dat.parts, Don Heyse wrote:
> In lugnet.cad.dat.parts, Don Heyse wrote:
> > In lugnet.cad.dat.parts, Willy Tschager wrote:
> > >
> > > here are the rules. because the level of our pow-how will start
> > > right from the top you have to show qualification. I definitely
> > > won't waist my time with unprepared people which have no clue about
> > > the basics. now, I'll post my qualification below and when you think
> > > you are fit enough post yours and join me.
> > >
> > > the first topic to be discussed will be: bmp2dated patterns are crap!
> >
> > That's true. Bmp2dat needs some real edge tracking algorithms instead
> > of just runlength encoding. Something like this.
> >
> > http://www.ipf.tuwien.ac.at/fr/buildings/diss/node94.html
> >
> > It also needs an autorotate function. Just look for the longest
> > straight line near 90 or 0 degrees and rotate it to exactly 90 or 0
> > for starters.
> >
> > But what about patterns made with quad2dat.exe? It's a more manual
> > procedure, but doesn't that make it better?
>
> Or you could search the net for vectorizer programs like this one.
>
> http://www.algolab.com/Samp_Cnv/Pvf.htm
>
> Here's a free vectorizer with source code.
>
> http://xmailserver.org/davide.html
>
> I wonder how hard it would be to modify it to handle color and
> output ldraw format.
I'm gonna have to look into this again. Vectorizers are cool.
Here's some more opensource code
http://delineate.sourceforge.net/
http://potrace.sourceforge.net/
http://autotrace.sourceforge.net/
Here's a really nifty description of how to use the potrace vectorizer
to generate edges, and the netlib triangulator to create the triangles.
http://cscott.net/Projects/Mallard/
Here's the triangulator by itself.
http://www-2.cs.cmu.edu/~quake/triangle.html
We just need to create a GUI front end to this stuff and a .LDR
output translator. Should be easy right?
Don
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Message has 1 Reply:
 | | Patterns, simplified
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| (...) I'm inferring that you are talking about converting a scanned image into a pattered subfile for a part? Then, optimally, the process requires the following discrete phases: 1) Someone[1] scans a patterned part at high resolution into an agreed (...) (20 years ago, 5-May-04, to lugnet.cad.dat.parts, lugnet.cad.dev)
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Message is in Reply To:
| | Re: Patterns suck!
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| (...) Or you could search the net for vectorizer programs like this one. (URL) a free vectorizer with source code. (URL) wonder how hard it would be to modify it to handle color and output ldraw format. Enjoy, Don (20 years ago, 5-May-04, to lugnet.cad.dat.parts, lugnet.cad.dev)
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