The path-inset steps can be adjusted smaller/larger in the preferences, if that is helpful. but the effect on nested compound paths may be unpredictable. The bitmap>centerline trace is as close as we might get. I totally agree that a magic button that converts a closed path to a stroked path would be awesome. I was skimming over the use of an app to sketch/trace, not using a tablet as an input device. (Not to be confused with Wacom's Inkspace which is their application to capture pen drawings made on their tablets, and whose SVG exports are the cause of my troubles!!). I just noticed that Inkscape has an Inkspace, is that the place to upload examples to link to in forum posts? If I wasn't so busy fixing these lines I would draw an example but how to upload an image? I don't see an image upload icon in this forum text editor?. Hence my quest for a single-line centre-line rendering of a 'filled path'. One solution to reduce the Filled Path to a single line would be to manually delete the inner or outer loop (all my imported lines have constant 0.265mm width), but I would need to do that semi-automatically for a large selection (my drawings have hundreds of lines). Add in the behaviour where moving a node tends to unpredictably explode its curve into a big loop which needs fixing, and you will see that it is a tough job. Now when you try to modify all your now-dualled straight-line Beziers, say to follow the rabbit image better, you will have at least double the work, as there are two unconnected lines to adjust where you used to have just one. The rabbit outline is now a dual-line Filled Path (as I'll call it) and that is the line-form that all the shapes in my imported drawings have. Imagine that you highlight your whole initial straight-line rabbit outline shape and do Path/Shape to Path. Let me try to explain what I am trying to find a fix for. You then modify the bezier curves and line thickness, OK. You draw a series of single-line straight-line segments, finally closing the loop behind the rabbit's ear. There is definitely a communication problem here, I know I didn't quite understand Inkscape's use of the terms Path and Stroke, but let's use your demo example. (Your demo is great - is there a note somewhere on howto make/post such demos?). Hi Tyler Yes I know about the N node tool drag etc you show there. If I could press one button and have all these paths thin to a single line following the original line's centrelines, I would be very happy and could more quickly tweak and clean up the drawing finally pressing Path/Stroke to Path to get adjustable-width lines where I needed them (not many). Summary: As I stated at the top of this thread, I draw line drawings on a Wacom Intuos Pad, and the exported SVG output is all filled paths. But with Paths, I have to alter the nodes on both sides of the curve individually, to keep the filled width constant, which is of course twice the work (or more). With single-line curves like the B and P tools produce, it is easy to alter the line to e.g. My problem comes when I need to bend or drag a part of a curve. Those are both useful and powerful, of course, and I do a lot of that in my tweaking and cleanup editing. with the N command I can drag individual nodes and also alter the Bezier lines between nodes. Either I drag one as a whole, using the S command, or. for example) and there doesn't seem to be an easy way to manipulate a part of those Path objects. In my work I need to alter drawings which contain mostly constant-width Paths (like curved C tool pen-strokes. Then importing that into Inkscape and doing centreline trace - it did seem to give improved results, perhaps because the lines were closer together to begin with. I also tried opening the image in GIMP, enlarging it to 5000px + width, selecting by colour then shrinking the selection until the smallest lines in the image ( the lines in the eyes ) still had an unbroken selection. It was slightly better I think, but it produced a lot of random tabs that poked out. I also ran it through a free program called F-Engrave which runs a v-bit ( cone shaped tool ) between the two lines, a cone should vary in depth but always give centre. This worked in Ubuntu Inkscape 1.0.1, but crashed Windows Inkscape 1.0.1 I found that creating the bitmap (alt+b) from a 3000px wide version of the SVG did improve things. I had a few attempts at centreline tracing the fox yesterday.
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