Processing 2. Креативное программирование
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size( 1024, 480 ); smooth();
strokeWeight( 2 );
minim = new Minim( this );
out = minim.getLineOut( Minim.STEREO );
sine = new SineWave( 130.816, 0.5, out.sampleRate() ); out.addSignal( sine );
saw = new SawWave( 65.4064, 1.0, out.sampleRate() ); out.addSignal( saw );
}
, draw(). ,.
void draw()
{
background( 255 );
translate( 0, height/2 );
for ( int i = 0; i < out.bufferSize(); i++ ) { float y1 = out.left.get( i ) * 100;
float y2 = out.right.get( i ) * 100; stroke( 0 );
point( i, y1 ); stroke( 255, 0, 0 ); point( i, y2 );
}
}
mouseMoved() . mouseX0, , - . , .
void mouseMoved()
{
float pan = map( mouseX, 0, width, -1, 1 ); sine.setPan( pan );
saw.setPan( -pan );
}
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keyPressed() .AZERTY, , .
void keyPressed()
{
if ( key == 'q' ) { sine.setFreq( 130.813 ); // C3 saw.setFreq( 65.4064 ); // C2
}
if ( key == 's' ) { sine.setFreq( 146.832 ); // D3 saw.setFreq( 73.4162 ); // D2
}
if ( key == 'd' ) { sine.setFreq( 164.814 ); // E3 saw.setFreq( 82.4069 ); // E2
}
if ( key == 'f' ) { sine.setFreq( 174.614 ); // F3 saw.setFreq( 87.3071 ); // F2
}
if ( key == 'g' ) { sine.setFreq( 195.998 ); // G3 saw.setFreq( 97.9989 ); // G2
}
if ( key == 'h' ) { sine.setFreq( 220 ); // A3 saw.setFreq( 110 ); // A2
}
if ( key == 'j' ) { sine.setFreq( 246.942 ); // B3 saw.setFreq( 123.471 ); // B2
}
}
void stop()
{
out.close();
minim.stop();
super.stop();
}
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, , .
, - AudioOutput.:
out = minim.getLineOut( Minim.STEREO );
Minim .. .- , - , - ., AudioOutput., .
sine = new SineWave( 130.816, 0.5, out.sampleRate() ); out.addSignal( sine );
saw = new SawWave( 65.4064, 1.0, out.sampleRate() ); out.addSignal( saw );
keyPressed() . -wave.setFreq(). ., 130.813 . (C3)( 2) ., , C3 C2 x 2. C4 C3.. : http://en.wikipedia.org/wiki/Piano_key_frequencies.
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..
.. - AudioPlayer.
import ddf.minim.*;
import ddf.minim.signals.*; import ddf.minim.analysis.*; import ddf.minim.effects.*;
Minim minim;
AudioPlayer player;
LowPassSP lowpass;
HighPassSP highpass;
void setup()
{
size( 640, 480 );
minim = new Minim( this );
player = minim.loadFile("song.mp3"); player.play();
lowpass = new LowPassSP( 440, 44100 ); player.addEffect( lowpass );
highpass = new HighPassSP( 440, 44100 ); player.addEffect( highpass );
}
void draw()
{
background( 255 );
}
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void stop()
{
player.close();
minim.stop();
super.stop();
}
, .player. addEffect() ,.
setup(). lowpass ( ) highpass ( ). Minim, bandpass (-) notch (- - ) . : http:// code.compartmental.net/minim/javadoc/. ., ,. , player. addEffect().
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ၞၢၠၣၰၲၦၙၤၡၢၙ
:
fOpenCV
fOpenCV
fOpenCV
fOpenCV
fOpenCV
- ... , , . .
, - . Processing . .
. video, Processing. Sketch | Import Library | video.Capture..
import processing.video.*;
Capture webcam;
setup() Capture . draw() .
void setup()
{
size( 640, 480 ); smooth();
println( Capture.list() );
webcam = new Capture( this, width, height, 30 ); webcam.start();
}
void draw()
{
background( 255 ); image( webcam, 0, 0 );
}
, captureEvent()., .
void captureEvent( Capture webcam )
{
webcam.read();
}
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, :
, - Capture.:
webcam = new Capture( this, width, height, 30 );
Capture() .this. . , , .- .
, ,. Capture.list(). :
webcam = new Capture( this, width, height, "Logitech Camera", 30 );
, - start()., . draw()image().
captureEvent() ,. webcam.read() -.
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ၞၢၠၣၰၲၦၙၤၡၯၠ. ... ,- . ,.
video.. CapturenumPixels threshold.
import processing.video.*;
Capture webcam;
int numPixels; int threshold;
setup(). numPixels. ,draw(). threshold 127.
void setup()
{
size( 640, 480 ); smooth();
webcam = new Capture( this, width, height, 30); webcam.start();
numPixels = webcam.width * webcam.height; threshold = 127;
}
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draw() webcam.available(). loadPixels() updatePixels() ., .
void draw()
{
if ( webcam.available() ) { webcam.read();
image( webcam, 0, 0 );
loadPixels();
for ( int i = 0; i < numPixels; i++ ) { float b = brightness( webcam.pixels[i] ); if ( b > threshold ) {
pixels[i] = color( 255 ); } else {
pixels[i] = color( 0 );
}
}
updatePixels();
}
fill( 255, 0, 0 ); noStroke();
rect( 10, 10, 110, 20 ); fill( 255 );
text( "Threshold: " + threshold, 14, 24 );
}
keyPressed(). - , - .
void keyPressed()
{
if ( key == CODED ) {
if ( keyCode == UP ) { threshold++;
}
if ( keyCode == DOWN ) { threshold--;
}
}
}
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