// ITU Experimental Interaction, spring 2011. Mandatory Assignment #07. Jakob Fischer Jørgensen. Mail: jfis@itu.dk.
// Area: Networks and Noises.
// Theme: Poetry.
// Requirements: Sketch must implement a server and a client set-up and/or use sound as a form of interaction.

// Import all the minim stuff 
import ddf.minim.*;
import ddf.minim.signals.*;
import ddf.minim.analysis.*;
import ddf.minim.effects.*;
// import processing.opengl.*;  
// Declare variables and sound variables including FFT objects and time
// FFT Manual: http://code.compartmental.net/tools/minim/manual-fft/
Minim minim;
AudioPlayer music;
FFT fft;
FFT fftLog;
int iNumAverages = 32;
float m = millis();

void setup () {
  // The usual setup stuff: cursor, FPS, size, OPENGL
  cursor (CROSS);
  frameRate(60);
  size (800,450); 
  // Start the sound engine
  minim = new Minim (this);
  music = minim.loadFile("atf.mp3"); 
  // Make our FFT object ready to process buffer size and sample rate
  fft = new FFT(music.bufferSize(), music.sampleRate());
  // Set number of averages used when computing the spectrum 
  // and spaces the averages in a linear manner
  fft.linAverages(iNumAverages);
  // Make our FFT object ready to process buffer size and sample rate
  fftLog = new FFT(music.bufferSize(), music.sampleRate());
  // Sets the number of averages used when computing
  // the spectrum based on the minimum bandwidth for an octave           
  // and the number of bands per octave
  fftLog.logAverages(22, 3);
  // Loop the mp3 file
  music.loop();
}


void draw () {
  // All the usual draw stuff
  colorMode(RGB,255);
  background (0); 
  noFill();
  stroke(1);
  strokeWeight(1);

  // perform a forward FFT on the samples in the mix buffer
  fft.forward(music.mix);
  // Call update, arms, twist and length from 
  // FftVar Class, for our 'R' key visualisation
  fftTotalScale.Update();
  fftArms.Update();
  fftTwist.Update();
  fftLength.Update();

  // Different visualisations for each key in the following

  // The P2D, P3D, and OPENGL renderer settings allow stroke() and fill() 
  // settings to be altered per-vertex, however the default JAVA2D renderer does not 
  // Settings such as strokeWeight(), strokeCap(), and strokeJoin() cannot be changed 
  // while inside a beginShape()/endShape() block with any renderer

  if(key=='w') {
    // Funny lines visualisation, endpoint can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(200),random(200));
    for (int i = 1; i<music.bufferSize();i++) {
      float value = music.mix.get(i);
      rect (i+mouseX,mouseY+(value * 30)+i,i,i);
    }
    endShape();
  }
  if(key=='a') {
    // Bouncing line (which is actually a number of ellipses) 
    // horisontal visualisation, endpoint can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(200),random(200));
    for (int i = mouseX; i < music.bufferSize();i++) {
      float value = music.mix.get(i);
      ellipse (i,(value*200) + mouseY,i/32,i/32);
    }
    endShape();
  }
  if(key=='s') {
    // Bouncing line (which is actually a number of ellipses) 
    // vertical visualisation, endpoint can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(200),random(200));
    for (int i=mouseY; i < music.bufferSize(); i++) {
      float value = music.mix.get(i);
      ellipse ((value*500) + mouseX, i,i/32,i/32);
    }
    endShape();
  }

  if (key=='d') {
    // Bouncing line (which is actually a number of ellipses) horisontal
    // and vertical visualisation combined, end/mid-point can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(200),random(200));
    for (int i = mouseX; i < music.bufferSize();i++) {
      float value = music.mix.get(i);
      ellipse (i,(value*200) + mouseY,i/32,i/32);
    }
    endShape();

    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(200),random(200));
    for (int i=mouseY; i < music.bufferSize(); i++) {
      float value = music.mix.get(i);
      ellipse ((value*200) + mouseX, i,i/32,i/32);
    }
    endShape();
  }

  if (key=='e') {
    // Bouncing recangle visualisation, 
    // midpoint can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(40,220),random(1,190),random(1,190));
    for (int i = mouseX; i < music.bufferSize();i++) {
      float value = music.mix.get(i);
      rect (mouseX + (value*400), mouseY+(value*200), 100, 100);
    }
    endShape();
  }

  if (key=='q') {
    // Bouncing ellipse visualisation, 
    // midpoint can be moved with mouse
    colorMode(RGB,255);
    beginShape ();
    fill(random(200),random(10,220),random(100,250),255);
    for (int i = mouseX; i < music.bufferSize();i++) {
      float value = music.mix.get(i);
      ellipse (mouseX,mouseY, value*500, value*500);
    }
    endShape();
  }

  if (key=='r') {
    // Frostmark visualisation, cannot be moved
    // Inspired by Paul Grenfell's Music Visualisation
    // http://www.openprocessing.org/visuals/?visualID=25137
    colorMode(RGB,255);
    noStroke();
    fill(random(200),random(200),random(200));
    rectMode(CENTER);
    float fTotalScale = constrain(fftTotalScale.GetValue() * 0.75, 0.01, 2);
    int iNumArms = (int)constrain(fftArms.GetValue() * 3, 3, 10);
    for (float fTwistDir = -1; fTwistDir <= +1; fTwistDir += 2) {
      for (int i = 0; i < iNumArms; i++) {
        pushMatrix();
        translate(width/2, height/2);
        scale(fTotalScale);
        rotateZ((float)i * PI*2.0/(float)iNumArms - PI/2);
        int iLength = (int)constrain(fftLength.GetValue() * 50, 3, 20);
        for (int j = 0; j < iLength; j++) {
          float fRGBAlpha = (float)j / (float)iLength;
          translate((iLength-j+5)*3,0,0);
          rotateZ(fftTwist.GetValue() * 0.5 * fTwistDir);
          rect(0, 0, (iLength-j)*2, (iLength-j)*2);
        }
        popMatrix();
      }
    }
  }

  if (key=='f') {
    // Standard mediaplayer visualisation
    // HSB colored. Cannot be moved
    rectMode(CORNERS);
    colorMode(HSB, 100);
    fftLog.forward(music.mix);
    int w = int(width/fftLog.avgSize());
    for(int i = 0; i < fftLog.avgSize(); i++) {
      float amp = sqrt(sqrt(fftLog.getAvg(i)))*150;
      float h = i * 100/fftLog.avgSize();
      h -= 10;
      h = 100 - h;
      float s = 70;
      float b = amp/3 * 100;
      float a = 100;
      fill(color(h,s,b,a));
      rect(i*w+1, 20 + height-5, i*w + w, height-5-fftLog.getAvg(i)*1.5);
    }
  }


  // Visual description on top of video showing the available keys
  colorMode(RGB,255);
  stroke(0);
  fill(10,200,10);
  alpha (255);
  textSize(18);
  text("Keys: Q, W, E, A, S, D, F, R", 10, 20);
}

void stop() {
  music.close();
  minim.stop();
  super.stop();
}