You can do anything. That's why it's so great. MIDI has continuous controllers and notes. Notes can be mapped as well. Continuous controllers can be set to any value or a button sends that value so say you want a collection of brush sizes, you set a button to send a value anywhere from 0-127 that can be used to set any brush size at the click of a button.
On 13 September 2012 11:46, Ryan Stark <[email protected]> wrote: > Yes, you could connect through Jack but Hardware will show up at ALSA > so I don't think Jack would actually be a benefit for Gimp use but > maybe you'd need this to test with software? ZynaddSubFX can connect > via ALSA or Jack (or use Yoshimi) but can you then connect to GIMP > somehow maybe via the Jack connection UI where ALSA and Jack MIDI show > up? I'll have to leave this for others to test. I'm not on my Linux > graphics machine at the moment. I'm on OSX. > > On 13 September 2012 11:36, Ryan Stark <[email protected]> wrote: >> 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 <[email protected]> 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 <[email protected]> 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 [email protected] https://mail.gnome.org/mailman/listinfo/gimp-user-list
