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 Post subject: stroke selection/stroke path
PostPosted: Sun Oct 27, 2019 2:13 am  (#1) 
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Location: France
GIMP Version: 2.10.13
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:wvy
I used to "stroke the path" and never "stroke the selection" and I just noticed that "draw a selection" and "draw a path" give different results:

Image
Image

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Les parfums, les couleurs et les sons se répondent.Baudelaire (Les fleurs du mal)
2.10.36/(Samj) Gimp 2.10.38 OS Windows 10 Home 64 bits


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 Post subject: Re: stroke selection/stroke path
PostPosted: Sun Oct 27, 2019 3:32 am  (#2) 
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Script Coder
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Joined: Oct 25, 2010
Posts: 4812
When you stroke the path you have to remove the selection otherwise the stroke is cut in half (only the part insides is kept). For the rest, "Stroke a selection" generates a path on-the-fly with parameters that are different from the the ones used in the "Select--to-path" to this path is not as smooth.

In the image below, the red is "stroke selection" (selection obtained by "Alpha to selection") and the blue is "select to path, stroke path", and the red is visibly more wiggly.

Attachment:
StrokeSelection-vs-StrokePath.png
StrokeSelection-vs-StrokePath.png [ 58.09 KiB | Viewed 6015 times ]


However if you compare the path from Select-To-Path to the path obtained with Text-to-path, you find that the recomputed path is a bit too smooth (very visible in the bottom right corner):

Attachment:
StrokeSelection-vs-StrokePath-TextAndSelPaths.png
StrokeSelection-vs-StrokePath-TextAndSelPaths.png [ 5.64 KiB | Viewed 6015 times ]

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 Post subject: Re: stroke selection/stroke path
PostPosted: Sun Oct 27, 2019 1:42 pm  (#3) 
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GimpChat Member

Joined: Apr 09, 2018
Posts: 1888
Location: France
ofnuts :wvy
:tyspin for your explanations :)

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Les parfums, les couleurs et les sons se répondent.Baudelaire (Les fleurs du mal)
2.10.36/(Samj) Gimp 2.10.38 OS Windows 10 Home 64 bits


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