Blending colors in Inkscape?

Post questions on how to use or achieve an effect in Inkscape.
AlexAndAHalf
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Blending colors in Inkscape?

Postby AlexAndAHalf » Sat Jun 04, 2016 9:17 am

Is there some sort of blending tool in Inkscape? Something similar to like a blending stump in conventional graphite drawing?

sphere.JPG
sphere.JPG (11.73 KiB) Viewed 2842 times


For example, how could I make the transition from dark to light a bit more gradual rather than having a stark contrast?

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Espermaschine
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Re: Blending colors in Inkscape?

Postby Espermaschine » Sat Jun 04, 2016 9:19 am

Interpolation or gradients come to mind.

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brynn
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Re: Blending colors in Inkscape?

Postby brynn » Sat Jun 04, 2016 9:38 am

And blurring could work as well. Simple blur can be done in Fill and Stroke dialog. And more complicated blurs are available as filters (Filters menu).

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Espermaschine
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Re: Blending colors in Inkscape?

Postby Espermaschine » Sat Jun 04, 2016 9:58 am

Ive also seen this kind of effect a lot in vector illustration (quick mockup):

EDIT:
added a slightly better version (i suck at 3D)
.
Attachments
Shading.png
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rect4438.png
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Last edited by Espermaschine on Sat Jun 04, 2016 10:34 am, edited 2 times in total.

Lazur
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Re: Blending colors in Inkscape?

Postby Lazur » Sat Jun 04, 2016 10:28 am

Depends on your needs.
But there is not such a smudge tool in inkscape as in gimp.

Either use somekind of halftone effect or gradients drawn manually -more or less from scratch if you start from an image as in your example- or
use somekind of filtering, like blurring or turbulence/displacement map, as mentioned above.
The latter transforms to raster images if you save as pdf -in that case (intention is for printing) probably adding the effect in a raster editor may be easier on an exported png.

Polygon
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Re: Blending colors in Inkscape?

Postby Polygon » Sat Jun 04, 2016 9:35 pm

Why not a gradient mesh?
GradientMesh.png
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Cheers
P.

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brynn
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Re: Blending colors in Inkscape?

Postby brynn » Sun Jun 05, 2016 8:52 am

Note that gradient mesh is still experimental, and not part of a stable release.

Polygon
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Re: Blending colors in Inkscape?

Postby Polygon » Sun Jun 05, 2016 9:37 pm

Then take a "damn" radial gradient:
:mrgreen:
3Kugeln Kopie.jpg
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Cheers
P.

Lazur
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Re: Blending colors in Inkscape?

Postby Lazur » Sun Jun 05, 2016 9:52 pm

Molumen wrote:Here's the Inkscape version 0.45 splash screen
Image


http://www.inkscapeforum.com/viewtopic.php?f=8&t=29&p=93#p93

Polygon
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Re: Blending colors in Inkscape?

Postby Polygon » Sun Jun 05, 2016 10:39 pm

OMG. I use Inkscape since 2005 since then member of https://www.inkscape-forum.de and moderator as well.
I remember this - but what is it telling me? Does it use just one gradient for the balls like me above?
Funny aside: my Intaglio.app replica was done in January 2007

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P.
inkscape045Splash.jpg
inkscape045Splash.jpg (100.13 KiB) Viewed 2626 times

Lazur
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Re: Blending colors in Inkscape?

Postby Lazur » Sun Jun 05, 2016 11:10 pm

Just remembered it was looking similar.

(Used 0.46 first myself, and got into it around 2010.)

Gradient meshes are a hidden part of the current stabile already, yet they are buggy -duplicating, cloning etc.

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Espermaschine
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Re: Blending colors in Inkscape?

Postby Espermaschine » Mon Jun 06, 2016 12:07 am

and where is the OP ?

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Lazur URH
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Re: Blending colors in Inkscape?

Postby Lazur URH » Mon Jun 06, 2016 12:20 am

Somewhere in Florida probably.

s parxz
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Re: Blending colors in Inkscape?

Postby s parxz » Fri Mar 17, 2017 1:08 am

Fairly new to Inkscape. Was there a tutorial on impressive gradients like this ?

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brynn
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Re: Blending colors in Inkscape?

Postby brynn » Fri Mar 17, 2017 5:35 am

You could use a simple radial gradient to make the ball or marble, like in this msg viewtopic.php?p=97134#p88871. We do have the new Gradient Mesh tool now, but I haven't seen any tutorials yet.


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