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Need help making drawings into single line art 4 whiteboard

Posted: Sat Nov 15, 2014 6:41 am
by danblast
Hi I need to make traced bitmaps with various parts into a single line drawing. For example I bitmap trace some simple black and white clip art and it results in a black silhouette with many white parts laid over.

I would like to make this into a single continuous line instead.

Reason being I am using some whiteboard sketch software and the multipart traces draw strangely verse naturally.

Thanks

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 7:26 am
by tylerdurden
Might be possible to boolean them into one object.

PathExclusion.jpg
PathExclusion.jpg (84.59 KiB) Viewed 3959 times

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 11:30 am
by danblast
Thanks, but do you think that would work with a cartoon person? Sounds more like a cookie cutter for basic shapes. I was hoping there was some kind of single line trace or a way to merge them all.

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 12:25 pm
by tylerdurden
That operation was performed with one click. You could try it and see what happens...

Hard for us to tell what might happen on your image, unless you upload an example.

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 1:21 pm
by danblast
Image
The one on the left is the grouped objects the one on the right is what I would like the final product to look like.

Thanks

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 1:49 pm
by tylerdurden
You might try trace with the Stacked option unchecked.
Created a single path here:
TraceNotStacked.jpg
TraceNotStacked.jpg (145.85 KiB) Viewed 3917 times


SVG Image

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 1:59 pm
by danblast
Tyler, tried what you suggested and it still comes out as multiple objects verse a single line. I found this out by selecting the 'edit paths nodes' and you could clearly see it is outlined verse a single line.

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 9:41 pm
by rich2005
danblast wrote:Tyler, tried what you suggested and it still comes out as multiple objects verse a single line. I found this out by selecting the 'edit paths nodes' and you could clearly see it is outlined verse a single line.


It is because Inkscape does not do a centerline trace.
You need to run a bitmap (preferably with thinner lines) through some other tracing application or use an on line convertor such as
http://www.roitsystems.com/cgi-bin/autotrace/tracer.pl with centerline trace enabled and maybe the corner threshold upped a bit, say 150. Then into Inkscape for some improvement.

out.svg
(9.21 KiB) Downloaded 220 times

Re: Need help making drawings into single line art 4 whitebo

Posted: Sat Nov 15, 2014 10:08 pm
by danblast
Rich thanks so much that program did the trick and was exactly what I needed.

Awesome!