There's a video on youtube of somebody doing it but I don't recommend pushing it this far i.e. changing as you actually make a stroke. That can get a bit glitchy. Also, a keyboard isn't ideal. You want something like that Korg. Before the Korg NanoKontrol, there wasn't anything as ideal but that machine is cheap, small and perfect for the job.
http://www.youtube.com/watch?v=Llu3WGbJpzc On 13 September 2012 11:25, Ryan Stark <efflux...@googlemail.com> wrote: > Hi. > > I've not been on my Linux system with Gimp for a bit so Ideally I need > to work through exactly how I set that up and how I'm using it. The > aconnectgui is how to see and make the connections but in actual fact > it's best to do that from command. The connection isn't remembered so > rather than set it up via aconnectgui I just run a command every time > I start Gimp. > > As for the colour adjustments. You turn knobs to change colours but > you see that colour changing on the colour wheel and can still select > there anyway, if you want. It can be used to make small colour changes > as you paint or values, opacity, whatever you want. Brush size is an > obvious one. You can literally change stuff as you paint a stroke but > that can end up a bit glitchy. One problem with Gimp 2.8 is that the > top size of the brush is far too big. If you compile from scratch you > can change that. This needs to be mentioned in the Gimp developer > list. It's also possible to have UI to set that largest size of brush > so it's not too big. I've seen the code that needs added to do that. > This all needs to be better sorted out to make Gimp more ideal for > painting.These are simple changes that need to be in Gimp. Changing it > and compiling is too much trouble. > > All the functions that can be mapped to keyboard can be mapped to MIDI > except the MIDI has continuous controller meaning instead of one key > command ton say make a brush bigger you have values from 0-127. > Obviously this is better. I mentioned that with colour I think you > need to set the controller to not go to value 0. I'll have to confirm > that but I think value 0 for a colour causes it to turn all colours to > 0 or something similar. There is some kind of problem with that. I > think it needs to be 1-127. > > Maybe some other people can have a go with this. Any piece of modern > music gear tends to have MIDI so if you've got any keyboard or > whatever you can test this or use software that can send MIDI to test > it. An example would be ZynAddSubFX. That should show up at ALSA and > it should have some MIDI out function (I Think). This would obviously > be useless but can used used just as a test. Until I get back into > Gimp for painting again, I can't explain everything. > > On 12 September 2012 18:49, yahvuu <yah...@gmail.com> wrote: >> Hello Ryan, >> >> Am 12.09.2012 15:25, schrieb Ryan Stark: >>> >>> [..] Gimp can be hooked up to a MIDI controller for >>> controlling brush sizes or anything else. This is a superb feature. >>> You can buy a little MIDI controller with lots of knobs and sliders. >>> VASTLY superior to sliders on graphics tablets. >> >> >> >> Und Am 12.09.2012 18:31, schrieb Ryan Stark: >>>> >>>> "Now that's a really neat idea. What (affordable) MIDI controller do you >>>> like?" >>> >>> >>> I use a Korg NanoKontrol. The one here with the sliders and knobs: >>> >>> http://www.korg.co.uk/products/software_controllers/nano2/sc_nano2.php >>> >>> I'm not sure how much it is but it's cheap compared to what there used >>> to be. It's very small and portable so ideal for Gimp. It communicates >>> with alsa (via USB). You have a small GUI app called aconnectgui where >>> you can see the Korg output and Gimp input. You just connect them up. >>> I actually do it from command but that's because I couldn't find >>> aconnectgui in the Arch repo. Here's some info from the Ubuntu site: >>> >>> https://apps.ubuntu.com/cat/applications/precise/aconnectgui/ >>> >>> One problem is that you need the Korg editor (Windows or OSX) to >>> change MIDI functions on the NanoKontrol. That should work via wine >>> but I didn't try that. The reason you have to change some things is >>> that by default some of the switches are momentary or maybe that >>> wasn't the problem. I can't remember exactly but I had to edit a few >>> things. I'm not on Linux at the moment to look at it exactly but >>> you'll find MIDI under Input controllers in Gimp. You have a vast >>> choice of Gimp parameters and you set them by choosing the one you >>> want then moving the appropriate knob on the controller to set it to >>> the parameter. There is stacks you can do. I like to set it to change >>> colours i.e. one knob will increase red etc. Selecting colours, values >>> etc in the colour wheel suddenly starts to become obsolete. Actually, >>> thinking about that particular function, I think that was why I had to >>> edit the Korg via its OSX(or Windows) editor. I think you need that >>> particular value to not go to zero value. Probably I should document >>> all this somewhere properly. The huge advantage over a graphics >>> tablet slider is that MIDI has continuous controllers. This means you >>> move the knobs and sliders up and down to exact values. You are not >>> sending a keyboard command. It's really quite ingenious whoever >>> thought of adding that to Gimp and I bet hardly anyone uses it. >> >> >> even more so since this really interesting piece of information got buried >> in one of >> those threads i really cannot justify spending my time to wade through such >> slurry :) >> >> >> I'm really curious about the following passage: >>> >>> [..] I like to set it to change >>> colours i.e. one knob will increase red etc. Selecting colours, values >>> etc in the colour wheel suddenly starts to become obsolete. >> >> >> How is your setup working here? >> Can you still you use the colour wheel (via mouse/tablet) in parallel? >> How do you keep the slider/knob position in sync with the current color >> then? >> >> Is there a kind of adjustment that the controller offers the most advantage >> for you? >> I'm thinking here of relative vs. absolute adjustments, that is >> - a "bit more of blue", or a little darker vs, >> - all RGB sliders down: instantly gives black; all three sliders at 50%: >> perfect mid gray. >> >> I mean, one compelling advantage of using the color wheel is that you can >> see all available colors in >> advance, before choosing one of them. >> >> >> best regards, >> peter _______________________________________________ gimp-user-list mailing list firstname.lastname@example.org https://mail.gnome.org/mailman/listinfo/gimp-user-list