import krister.Ess.*; 

Channel myChannel; 
float laenge = 0.6;
float schwellwert = 1.5;

int spektrum_min = 25;
int spektrum_max = 180;

frequenz  [] frequenzArray = new frequenz[spektrum_max+1]; // Array der Frequenzen

int x_mitte = 150;
int y_mitte = 600; 

float rotation = PI-0.5;

boolean abspielen = true;

// Farben
PImage farb_bild;
color[] farbe = new color[31]; 
;

void setup() { 
  framerate(30);
  size (900, 700); 
  smooth();

  noFill();
  background(0);

  // start up Ess 
  Ess.start(this); 

  // load "hello.aiff" into a new Channel 
  myChannel=new Channel("beethoven-5th.wav"); 
  myChannel.setupFFT(512); 
  myChannel.play(); 
  Ess.masterVolume(2);

  for (int i=spektrum_min; i<spektrum_max; i++) { 
    frequenzArray[i] = new frequenz();
  }
} 

void draw() { 

  if (abspielen) {
    // load our spectrum 
    myChannel.loadSpectrum(); 
    // draw our frequency bars 
    for (int i=spektrum_min; i<spektrum_max; i++) { 
      float temp=min(50, max(0, (myChannel.spectrum[i]*4000))); 
      frequenzArray[i].zeichnen(temp, i);
    }
  }
} 

class frequenz {
  float x;
  float y;
  float x2;
  float y2;

  frequenz() {
    x = x_mitte;
    y = y_mitte;
  }

  void zeichnen (float wert, int faecher) {
    y2 = laenge * sin(radians((wert)*100)+(PI/spektrum_max * faecher)+rotation);
    x2 = laenge * cos(radians((wert)*100)+(PI/spektrum_max * faecher)+rotation); 
    if (wert > schwellwert) { 
      strokeWeight(1);
//      float farbwert = 0.3 * wert-10;
//      stroke(farbe[round(farbwert)]);               
      stroke(255,183,0, 50);               
      line (x, y, x+x2, y+y2); 
    } 
    else {
      strokeWeight(0.5); 
      stroke(255, 255, 255, 40);         
      line (x, y, x+x2, y+y2); 
    }            
    x = x+x2;
    y = y+y2;      
  }
}

void channelDone(Channel ch) { 
  abspielen = false;
  print("Fertig");
} 

public void stop() { 
  Ess.stop(); 
  super.stop(); 

}