10 Feb
2006
10 Feb
'06
8:29 p.m.
Does anyone know a good way to write code that renders synth knobs/potis/controllers?
I was looking around to rotate an image which only worked in opengl...
Creating a circle took too much time in sdl.
Thanks for your help.
grtz Scar
--
It is now quite lawful for a Catholic woman to avoid pregnancy by a resort to
mathematics, though she is still forbidden to resort to physics and chemistry.
-- H.L. Mencken
10 Feb
10 Feb
8:34 p.m.
On Sat, 2006-02-11 at 02:29 +0100, krampenschiesser(a)freenet.de wrote:
Does anyone know a good way to write code that renders
synth knobs/potis/controllers?
I was looking around to rotate an image which only worked in opengl...
Creating a circle took too much time in sdl.
the gimp has/had an animation tool that worked well for this (a few
years ago), although it takes a little playing with it to understand how
to use it.
11:10 p.m.
krampenschiesser(a)freenet.de writes:
Does anyone know a good way to write code that renders
synth
knobs/potis/controllers?
http://cairographics.org
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11 Feb
11 Feb
4:03 a.m.
2006/2/11, krampenschiesser(a)freenet.de <krampenschiesser(a)freenet.de>de>:
Does anyone know a good way to write code that renders
synth knobs/potis/controllers?
I was looking around to rotate an image which only worked in opengl...
Creating a circle took too much time in sdl.
Thanks for your help.
grtz Scar
This is a fancy Knob Widget for FLTK, I'm sure it's drawing code can
be adapted to other toolkits.
http://www-timc.imag.fr/Yves.Usson/personnel/Widgets/knob.html
-Richard
6:23 a.m.
Thank you for your fast response.
I'll look into it :D
--
After a number of decimal places, nobody gives a damn.
10:25 p.m.
On Sat, 2006-02-11 at 02:29 +0100, krampenschiesser(a)freenet.de wrote:
Does anyone know a good way to write code that renders
synth knobs/potis/controllers?
I was looking around to rotate an image which only worked in opengl...
Assuming for a moment that you don't have strict memory requirements,
you might want to consider loading an animation and swapping the frames
when the controller is moved. There are a few implementations in qt and
gtk that use this method and i've created some animations in blender
(http://www.blender.org/cms/Home.2.0.html) for one based on this
widget (from galan):
http://cvs.sourceforge.net/viewcvs.py/galan/galan/src/gtkknob.c?rev=1.8&…
The benefits:
easy eye candy (pretty and complex prerendered knobs) with little or no
custom drawing code (depends on the toolkit your using)
easy to change the appearence by changing the animation
fairly easy on the cpu
The downsides:
static images == a finite step resolution
memory usage (probably >100K at least for a smoothly animated knob)
learning to use or finding someone to use a 3d modeller or animation
tool.
For example, this shot shows a work in progress interface for a DSSI
synth plugin. I rendered the knobs in blender with an alpha channel to
get translucent shadows. The widget uses generic gtk functions to
render each frame over the background as the knob is turned.
It looks pretty nice in action, even if it's an eye candy overdose
for some tastes.
(if you dispense with the alpha and transparency, it's naturally faster)
http://www.zenadsl6252.zen.co.uk/purgatory.png
If you're holding out for an algorithmic solution of some kind..
..i just wasted your time ;)
Cheers,
Pete.
--
======================
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======================
10:30 p.m.
On Sun, Feb 12, 2006 at 03:24:57AM +0000, peter wrote:
For example, this shot shows a work in progress
interface for a DSSI
synth plugin. I rendered the knobs in blender with an alpha channel to
get translucent shadows. The widget uses generic gtk functions to
render each frame over the background as the knob is turned.
It looks pretty nice in action, even if it's an eye candy overdose
for some tastes.
(if you dispense with the alpha and transparency, it's naturally faster)
http://www.zenadsl6252.zen.co.uk/purgatory.png
This is not really as overkill as you'd think - it's kind of the defacto
way things look on Windows/Mac plugins. Shadows and all.
10:35 p.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs?
On 2/12/06, peter <zenadsl6252(a)zen.co.uk> wrote:
On Sat, 2006-02-11 at 02:29 +0100,
krampenschiesser(a)freenet.de wrote:
Please, pretty please get rid of the keyboard. If you want a sexy
keyboard, skin vkeybd don't include a keyboard in your dssi. Apart
from that i actually quite like it.
Loki
Does anyone know a good way to write code that
renders synth
knobs/potis/controllers?
I was looking around to rotate an image which
only worked in opengl...
Assuming for a moment that you don't have strict memory requirements,
you might want to consider loading an animation and swapping the frames
when the controller is moved. There are a few implementations in qt and
gtk that use this method and i've created some animations in blender
(http://www.blender.org/cms/Home.2.0.html) for one based on this
widget (from galan):
http://cvs.sourceforge.net/viewcvs.py/galan/galan/src/gtkknob.c?rev=1.8&…
The benefits:
easy eye candy (pretty and complex prerendered knobs) with little or no
custom drawing code (depends on the toolkit your using)
easy to change the appearence by changing the animation
fairly easy on the cpu
The downsides:
static images == a finite step resolution
memory usage (probably >100K at least for a smoothly animated knob)
learning to use or finding someone to use a 3d modeller or animation
tool.
For example, this shot shows a work in progress interface for a DSSI
synth plugin. I rendered the knobs in blender with an alpha channel to
get translucent shadows. The widget uses generic gtk functions to
render each frame over the background as the knob is turned.
It looks pretty nice in action, even if it's an eye candy overdose
for some tastes.
(if you dispense with the alpha and transparency, it's naturally faster)
http://www.zenadsl6252.zen.co.uk/purgatory.png
If you're holding out for an algorithmic solution of some kind..
..i just wasted your time ;)
Cheers,
Pete.
--
======================
paugh on irc.freenode.org in #sweep, #lad
kickback(a)users.sourceforge.net
======================
11:28 p.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs? [OT] UI issues
On Sun, 2006-02-12 at 14:35 +1100, Loki Davison wrote:
Please, pretty please get rid of the keyboard. If you
want a sexy
keyboard, skin vkeybd don't include a keyboard in your dssi. Apart
from that i actually quite like it.
assuming i ever finish it and it gets used (2 big ifs), it will be used
in the standalone version too and the keyboard was requested.
i always intended it to be optional/hideable anyway (and hidden by
default, it's large enough already even without the keyboard).
do you still object to it's presence even if you don't use or look at
it?
(i prefer to offer the choice myself. pleases most people at the expense
of minor bloat).
ultimately, i'd like the widget itself to be native or skinable, the
same for the knob and to put that and any other useful widgets into a
lib (or merge it with an exiting one) so that other audio apps could use
them.
but i also wanted to have finished it last year so you can take that
with a pinch of salt.
Pete.
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12 Feb
12 Feb
12:16 a.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs? [OT] UI issues
On 2/12/06, peter <zenadsl6252(a)zen.co.uk> wrote:
On Sun, 2006-02-12 at 14:35 +1100, Loki Davison
wrote:
Yeah, i probably still object to it's presence. What is the point of a
standalone version? What is wrong with just using jack-dssi-host? If
you want a standalone version, you can just have a script,
jack-dssi-host myplugin called myplugin for people to run. Though the
other idea sounds nice. Easy to skin widgets with lots of
functionality are great. Maybe you can merge them into libphat? It's
specifically for that purpose, though i don't know Pete's plans for
it.
Loki
Please, pretty please get rid of the keyboard. If
you want a sexy
keyboard, skin vkeybd don't include a keyboard in your dssi. Apart
from that i actually quite like it.
assuming i ever finish it and it gets used (2 big ifs), it will be used
in the standalone version too and the keyboard was requested.
i always intended it to be optional/hideable anyway (and hidden by
default, it's large enough already even without the keyboard).
do you still object to it's presence even if you don't use or look at
it?
(i prefer to offer the choice myself. pleases most people at the expense
of minor bloat).
ultimately, i'd like the widget itself to be native or skinable, the
same for the knob and to put that and any other useful widgets into a
lib (or merge it with an exiting one) so that other audio apps could use
them.
but i also wanted to have finished it last year so you can take that
with a pinch of salt.
Pete.
======================
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kickback(a)users.sourceforge.net
======================
12:34 a.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs? [OT] UI issues
On Sun, 2006-02-12 at 16:16 +1100, Loki Davison wrote:
Okies. Can't say i understand you objecting to something you don't
have to use but there you go.
why a standalone version, because it's standalone.
no need for jack, jack-dssi-host, an easy to use jack capture program,
or a fully fledged DSSI host sequencer.
just the app, alsa and a keyboard. it lowers the bar for entry into
the world of linux audio.
not everyone is a dyed in the wool, kernel patching, source compling,
terminal using linux wizard.
don't need it?, don't use it ;)
Cheers
Pete.
NB: i'm only working on an interface. i'm not the author of the
standalone app or the (unreleased) DSSI plugin.
do you still
object to it's presence even if you don't use or look at
it?
Yeah, i probably still object to it's presence. What is the point of a
standalone version? What is wrong with just using jack-dssi-host? If
you want a standalone version, you can just have a script,
jack-dssi-host myplugin called myplugin for people to run. Though the
other idea sounds nice. Easy to skin widgets with lots of
functionality are great. Maybe you can merge them into libphat? It's
specifically for that purpose, though i don't know Pete's plans for
it.
1:10 a.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs? [OT] UI issues
On 2/12/06, Lee Revell <rlrevell(a)joe-job.com> wrote:
On Sun, 2006-02-12 at 05:34 +0000, peter wrote:
LOL! ;-) Right quote at the right time!
Okies.
We don't smoke marijuana in Muskogee, we don't take our trips on LSD...
1:14 a.m.
New subject: [linux-audio-dev] Re: Programming Synth Knobs? [OT] UI issues
On Sun, 2006-02-12 at 17:10 +1100, Loki Davison wrote:
On 2/12/06, Lee Revell <rlrevell(a)joe-job.com>
wrote:
Thanks I'm glad someone got it.
I found this really great article:
http://www.anti.com/press.php?id=14&pid=345
It has some choice quotes:
"Prior to September 11, the U.S. was the last place without M-16s in the
street, and now we'll join the rest."
Lee
On Sun, 2006-02-12 at 05:34 +0000, peter wrote:
LOL! ;-) Right quote at the right time!
Okies.
We don't smoke marijuana in Muskogee, we don't take our trips on LSD...
8:26 a.m.
Am Sonntag, 12. Februar 2006 04:24 schrieb peter:
For example, this shot shows a work in progress
interface for a DSSI
synth plugin. I rendered the knobs in blender with an alpha channel to
get translucent shadows. The widget uses generic gtk functions to
render each frame over the background as the knob is turned.
It looks pretty nice in action, even if it's an eye candy overdose
for some tastes.
(if you dispense with the alpha and transparency, it's naturally faster)
http://www.zenadsl6252.zen.co.uk/purgatory.png
Ok, so the knobs where rendered with Blender. Whatabout the rest?
It's been a while since the last time I used Blender. I was a bit disappointed
that I had to find workarounds for so many things which were not (directly)
supported, like rendering glass material for example.
Since then I "emulated" 3D pix with a vector graphic drawing tool like
Inkscape. Which sometimes brings you faster to get what you want and
sometimes not. But hey, doesn't Qt4 finally support .svg rendering? Aliasing
free scaling of skins / themes, isn't that cool?
CU
Christian
6:56 p.m.
On Sun, 2006-02-12 at 14:21 +0100, Christian Schoenebeck wrote:
Ok, so the knobs where rendered with Blender.
Whatabout the rest?
i've been using blender, inkscape and the gimp. (BIG? =)
the knobs and a basic button in blender, everything else in the gimp and
inkscape (mainly the gimp)
It's been a while since the last time I used
Blender. I was a bit disappointed
that I had to find workarounds for so many things which were not (directly)
supported, like rendering glass material for example.
This could still be the case but I'm largely ignorant of blender outside
of basic
modelling and animation.
Since then I "emulated" 3D pix with a vector
graphic drawing tool like
Inkscape. Which sometimes brings you faster to get what you want and
sometimes not.
yeah, i hear that. true 3D work often looks a bit.. _dead_ somehow too.
i wanted a tactile knob for this UI though, and blender did the job well
enough.
(i don't think you could create a comparable knob with a vector or 2d
tool)
but for the rest, vector and 2d pixel work is easier and perhaps even
the better
option.
But hey, doesn't Qt4 finally support .svg
rendering? Aliasing
free scaling of skins / themes, isn't that cool?
sure is. although svg doesn't work well for low res detail for the same
reason that blender
doesn't. which is why i used the gimp's sharpen tool on the knobs and
touched up the
keyboard. If you need HQ scalability then svg is the way to go but i'd
expect anything based on svg to be less detailed and more expensive.
neither are necessarily bad and
creative application can help a lot but it's suitability depends on your
requirements.
the fact that i'm crap at vector GFX meant that i didn't really consider
using it much either ;)
so.. i
Cheers,
Pete.
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linux-audio-dev@lists.linuxaudio.org
16 comments
10 participants
participants (10)
-
Christian Schoenebeck -
Esben Stien -
krampenschiesser＠freenet.de -
Lee Revell -
Loki Davison -
Luis Garrido -
Paul Davis -
peter -
Richard Spindler -
thockin＠hockin.org