Code That Creates: Workflow


Week 8! This week, I have explored some Java code for the assignment and I found some ways to extract data from my selected source using Processing. So, I am able to recognized my workflow. My workflow start from Buffer Size data from song > Generate imagery in Processing > Export PDF from Processing > Print PDF > Display printed PDF as poster.

I used an example from Processing file to get an idea on how I will extract data for my input and to export whole frames of sketch in one PDF. So, following are the exampls that i used.

i) DrawWaveforAndLevel

* This sketch demonstrates how to use the AudioBuffer objects of an AudioPlayer
* to draw the waveform and level of the sound as it is playing. These same
* AudioBuffer objects are available on AudioInput, AudioOuput, and AudioSample,
* so they same drawing code will work in those cases.
*/import ddf.minim.*;Minim minim;
AudioPlayer groove;void setup()
size(1024, 200);minim = new Minim(this);
groove = minim.loadFile(“groove.mp3”, 1024);
}void draw()

stroke( 255 );

// draw the waveforms
// the values returned by left.get() and right.get() will be between -1 and 1,
// so we need to scale them up to see the waveform
// note that if the file is MONO, left.get() and right.get() will return the same value
for(int i = 0; i < groove.bufferSize() – 1; i++)
float x1 = map( i, 0, groove.bufferSize(), 0, width );
float x2 = map( i+1, 0, groove.bufferSize(), 0, width );
line( x1, 50 + groove.left.get(i)*50, x2, 50 + groove.left.get(i+1)*50 );
line( x1, 150 + groove.right.get(i)*50, x2, 150 + groove.right.get(i+1)*50 );

fill( 255, 128 );

// the value returned by the level method is the RMS (root-mean-square)
// value of the current buffer of audio.
// see:
rect( 0, 0, groove.left.level()*width, 100 );
rect( 0, 100, groove.right.level()*width, 100 );

ii) Many Frames Into One File

import processing.pdf.*;

void setup() {
size(400, 400);
beginRecord(PDF, “everything.pdf”);

void draw() {
// Be sure not to call background, otherwise your file
// will just accumulate lots of mess, only to become invisible

// Draw something good here
line(mouseX, mouseY, width/2, height/2);

void keyPressed() {
if (key == ‘q’) {



Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s