Varying line/brushstroke opacity (with background grayscale)

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videohead
Posts: 2
Joined: Wed Nov 10, 2010 1:26 am

Varying line/brushstroke opacity (with background grayscale)

Postby videohead » Wed Nov 10, 2010 1:49 am

Hi,

New to the forum. 'Love the new inkscape. I would like to draw a path or brush stroke whose opacity depends on the depth of a background grayscale image. Can this be done in inkscape?

Thanks.
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prkos
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Location: Croatia

Re: Varying line/brushstroke opacity (with background grayscale)

Postby prkos » Wed Nov 10, 2010 3:22 am

Calligraphy tool has a Trace setting although it doesn't influence the stroke opacity, and you can influence Tiled clones according to the background.
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druban
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Re: Varying line/brushstroke opacity (with background grayscale)

Postby druban » Wed Nov 10, 2010 5:34 pm

But you can draw your stroke or several strokes first and then use that grayscale image as a mask, and then your strokes will have the opacity of the grayscale level of the image! Ta-da! (Perhaps, if that's what you want...)
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videohead
Posts: 2
Joined: Wed Nov 10, 2010 1:26 am

Re: Varying line/brushstroke opacity (with background grayscale)

Postby videohead » Wed Nov 10, 2010 10:46 pm

druban wrote:But you can draw your stroke or several strokes first and then use that grayscale image as a mask, and then your strokes will have the opacity of the grayscale level of the image!

That's so crazy, it just might work. Thanks :D
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