login screen background
Posted by Nikolaus Gradwohl
i just cleand up my harddisk a bit and found a background image i made a while ago for the login screen on my laptop
Nagios-Frontend in SL-viewer
Posted by Nikolaus Gradwohl
i wanted to test the region modules in OpenSimulator - a opensource server implementing the SecondLife protocol.
Because I didn't want to write another "hello world"-region module, i took my nagios-server as a datasource for my module.
now i can see the status of all the services my nagios is monitoring using a SL-Viewer :-)
the code is based on the demo-region from the opensim team and can be downloaded here.
qr-code midlet installer
Posted by Nikolaus Gradwohl
to simplify the installation of my mobileprocessing-sketch i have generated a qrcode-tag that downloads the jad file and installs the midlet on the mobile phone.
simply point a qrcode reader like the one from zxing to the image and click on download
Random numbers with MobileProcessing
Posted by Nikolaus Gradwohl
I wrote my first sketch in MobileProcessing. MobileProcessing is a processing dialect, that can be used to write apps for java-capable mobile phones.
The application can be used to generate random numbers. every key-event shows a new random number.
/**
a random number generator by
<a href="http://www.local-guru.net/blog">Guru</a>
*/
PFont font;
int rnd = 0;
void setup() {
font = loadFont( FACE_PROPORTIONAL, STYLE_PLAIN, SIZE_LARGE );
textFont( font );
textAlign( CENTER );
fill(0);
rnd = random(0,100000);
noLoop();
}
void draw() {
background(255);
text( "\n\n\n"+rnd, 0, 0, width, height );
}
void keyPressed() {
rnd = random(0,100000);
redraw();
}
the first snowdrop
Posted by Nikolaus Gradwohl
today i made a picture of the first snowdrop this year. the picture was shot with my new mobile phone (K550i - has a realy nice 2 megapixel cam with autofocus)
switching java-versions in ubuntu
Posted by Nikolaus Gradwohl
to switch between 2 installed versions of the jdk in ubuntu 2 commands are needed:
sudo update-alternatives --config java
is used to choose the java version
sudo update-alternatives --config javac
is used to change the javac version
osc sequencer in ruby
Posted by Nikolaus Gradwohl
I wrote a simple osc sequencer in ruby using rosc. The script triggers the drum-kit and the bass i implemented last week.
the pattern may also be of different length. This allows very interesting polyrythmic loops.
require 'osc'
Host = 'localhost'
Port = 3334
c = OSC::UDPSocket.new
hh = OSC::Message.new('/drum', 's', "hh" )
bd = OSC::Message.new('/drum', 's', "bd" )
sn = OSC::Message.new('/drum', 's', "sn" )
ba = OSC::Message.new('/bass', 'i', 64 )
#c.send sn, 0, Host, Port
bpm = 120
step = 1.0/8;
s = bpm * step / 60.0 ;
snd = [ bd, sn, hh ]
pattern = [
[1, 0, 0, 1, 0, 1, 0, 0 ],
[0, 0, 1, 0, 0, 0, 1, 1 ],
[1, 1, 1, 1, 1, 1, 1, 1 ]
]
bass = [
40, 40, 0, 40, 40, 0, 43, 0,
40, 40, 0, 40, 40, 0, 38, 0 ]
count = 0;
while(true)
(0..2).each { |i|
c.send(snd[i], 0, Host, Port) if pattern[i][count % pattern[i].length] == 1
}
ba.args = [bass[ count % bass.length]]
c.send( ba, 0, Host, Port ) if bass[ count % bass.length ] != 0
sleep s
count+=1
end
Processing sketch on fire
Posted by Nikolaus Gradwohl
I just made another little demo in processing. in fact i rewrote a little demo i did 15 years ago in pascal on a dos-box
modularizing chuck files
Posted by Nikolaus Gradwohl
I wrote a simple chuck script that generates a drum loop and a bass-sequence. later i wanted to reuse the sounds and started to search how to modularize the code.
so i started to convert my instrument declarations in classes. The instrument classes don't get connected to 'dac' directly. They have a "connect"-method that can be used by the main script.
to run the loop all the scripts must be given on the commandline
chuck Bass.ck DrumSet.ck loop.ck
The main script (loop.ck) instanciates a DrumSet and a Bass class and connects them to "dac". Than it generates a walking bass and a simple electronic drum loop.
DrumSet drm;
drm.connect( dac );
Bass bass;
bass.connect( dac );
[ 41, 41, 44, 46] @=> int bline[];
0 => int pos;
0 => int count;
while ( true ) {
drm.hh();
if ( count % 2 == 0 ) { drm.bd(); }
if ( count % 4 == 2 ) { drm.sn(); }
if ( count % 2 == 0 ) { spork ~ bass.bass( bline[ pos % 4 ]); }
if ( count % 2 == 1 ) { spork ~ bass.bass( 12 + bline[ pos % 4 ]); }
1 + count => count;
if ( count % 4 == 0 ) { 1 + pos => pos; }
250::ms => now;
}
flying with python3.0
Posted by Nikolaus Gradwohl
I recently installed python3. While scanning through the module directory a package named "antigravity" catched my eye.
when i typed "import antigravity" python opend a browser-window with this link
i really like python - and xkcd :-)
