Blending colors in Inkscape?

Post questions on how to use or achieve an effect in Inkscape.
Forum rules
Post Reply
AlexAndAHalf
Posts: 15
Joined: Sat Mar 07, 2015 5:33 am

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 5886 times


For example, how could I make the transition from dark to light a bit more gradual rather than having a stark contrast?
Top
User avatar
Espermaschine
Posts: 892
Joined: Thu Jun 05, 2014 9:10 pm

Re: Blending colors in Inkscape?

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

Interpolation or gradients come to mind.
Top
User avatar
brynn
Posts: 10309
Joined: Wed Sep 26, 2007 4:34 pm
Location: western USA
Contact:
Contact brynn

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).
Top
User avatar
Espermaschine
Posts: 892
Joined: Thu Jun 05, 2014 9:10 pm

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
Shading.png (19.49 KiB) Viewed 5844 times
rect4438.png
rect4438.png (39.65 KiB) Viewed 5844 times
Last edited by Espermaschine on Sat Jun 04, 2016 10:34 am, edited 2 times in total.
Top
Lazur
Posts: 4717
Joined: Tue Jun 14, 2016 10:38 am

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.
Top
Polygon
Posts: 393
Joined: Thu Dec 19, 2013 3:27 am

Re: Blending colors in Inkscape?

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

Why not a gradient mesh?
GradientMesh.png
GradientMesh.png (54.1 KiB) Viewed 5792 times


Cheers
P.
Top
User avatar
brynn
Posts: 10309
Joined: Wed Sep 26, 2007 4:34 pm
Location: western USA
Contact:
Contact brynn

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.
Top
Polygon
Posts: 393
Joined: Thu Dec 19, 2013 3:27 am

Re: Blending colors in Inkscape?

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

Then take a "damn" radial gradient:
:mrgreen:
3Kugeln Kopie.jpg
3Kugeln Kopie.jpg (25 KiB) Viewed 5687 times


Cheers
P.
Top
Lazur
Posts: 4717
Joined: Tue Jun 14, 2016 10:38 am

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
Top
Polygon
Posts: 393
Joined: Thu Dec 19, 2013 3:27 am

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

Cheers
P.
inkscape045Splash.jpg
inkscape045Splash.jpg (100.13 KiB) Viewed 5670 times
Top
Lazur
Posts: 4717
Joined: Tue Jun 14, 2016 10:38 am

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.
Top
User avatar
Espermaschine
Posts: 892
Joined: Thu Jun 05, 2014 9:10 pm

Re: Blending colors in Inkscape?

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

and where is the OP ?
Top
User avatar
Lazur URH
Posts: 129
Joined: Sun Feb 10, 2013 10:50 pm

Re: Blending colors in Inkscape?

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

Somewhere in Florida probably.
Top
s parxz
Posts: 1
Joined: Fri Mar 17, 2017 1:01 am

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 ?
Top
User avatar
brynn
Posts: 10309
Joined: Wed Sep 26, 2007 4:34 pm
Location: western USA
Contact:
Contact brynn

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.
Top
Post Reply

Return to “Help with using Inkscape”