void loadSettings(int i) {
  try {
    lastMCx=settings[i][0];
    lastMCy=settings[i][1];
    vt=settings[i][2];
    color_start=settings[i][3];
    color_range=settings[i][4];
    ringsize=settings[i][5];
  }
  catch(ArrayIndexOutOfBoundsException e) {
  }
}

void mousewheelstart(){
  addMouseWheelListener(new java.awt.event.MouseWheelListener() { 
    public void mouseWheelMoved(java.awt.event.MouseWheelEvent evt) { 
      mouseWheel(evt.getWheelRotation());
    }
  }
  ); 
}

void mouseWheel(int delta) {
  if(delta>0){
    vt++;
  }else{
    vt--;
  }
  if(vt<=1){
    vt=1;
  }
  
}

import ddf.minim.analysis.*;
import ddf.minim.*;

Minim minim;
AudioPlayer player;
FFT fft;

int lastMCx=350;
int lastMCy=718;

int vt;
float pfftBand[];

int color_start=30;
int color_range=255;

int ringsize=400;

int settings[][]= {
  {
    483, 628, 15, 30, 255, 300
  }
  , {
    350, 717, 135, 30, 255, 400
  }
  , {
    244, 700, 50, 30, 255, 300
  }
};


public void init() {
  mousewheelstart();
  super.init();
}


void setup()
{
  size(800, 800, P2D);
  //smooth();
  textFont(createFont("ArialMT", 20));



  colorMode(HSB);
  minim = new Minim(this);

  player = minim.loadFile("Faith  Touhou Unplugged_Classic 115_track1.mp3", 2048);
  player.loop();
  fft = new FFT(player.bufferSize(), player.sampleRate());



  pfftBand=new float[fft.specSize()];
  for (int i = 0; i < fft.specSize(); i++)
  {
    pfftBand[i]=0;
  }
  vt=135;
  frameRate(60);
  loadSettings(0);
}


void fadescr(int r, int g, int b, int sp) { 
  int red, green, blue;
  loadPixels();
  for (int i = 0; i < pixels.length; i++) {
    red = (pixels[i] >> 16) & 0x000000ff; 
    green = (pixels[i] >> 8) & 0x000000ff; 
    blue = pixels[i] & 0x000000ff; 
    pixels[i] = (((red+((r-red)>>sp)) << 16) | ((green+((g-green)>>sp)) << 8) | (blue+((b-blue)>>sp)));
  } 
  updatePixels();
}

void draw()
{
  println(frameRate);
  fadescr(0, 0, 0, 4);


  //lastMCx=mouseX;
  //lastMCy=mouseY;

  //translate(mouseX-width/2, mouseY-height/2);
  fft.forward(player.mix);

  pushMatrix();
  translate(width/2, height/2);
  rotate(-HALF_PI);
  for (int i=0; i<2; i++) {
    scale(1, -1);
    strokeWeight(2);
    noFill();
    beginShape();
    float sca=map(height-lastMCy, 0, height, 0, 1000);
    int vertexes=min(fft.specSize()-1, (vt)*6+1);
    for (int j=0; j<vertexes; j++) {
      float val=0;
      try {
        val=sqrt(pfftBand[j], 2)*sca;
      }
      catch(ArrayIndexOutOfBoundsException e) {
      }
      stroke(((color_range/float(vertexes)*j)+color_start)%255, 255, 255, 80);
      vertex(cos((TWO_PI/float(vt))*j)*(ringsize-val), sin((TWO_PI/float(vt))*j)*(ringsize-val));
    }
    endShape();
  }
  popMatrix();


  if (mousePressed) {
    fill(255);
    text(vt, 20, 20);
  }
  for (int i = 0; i < fft.specSize(); i++)
  {
    pfftBand[i]+=(fft.getBand(i)-pfftBand[i])/map(lastMCx, 0, width, 5, 50);
  }
  //println("delay: "+map(mouseX, 0, width, 5, 50));
}


float sqrt(float val, float root) {
  for (int i=0; i<root; i++) {
    val=sqrt(val);
  }
  return(val);
}

void keyPressed() {
  if (key>='1' && key<='9') {
    loadSettings(key-'1');
  }
  else if (key!=27) {
    player.pause();
    setup();
  }
}

void stop()
{
  player.close();
  minim.stop();

  super.stop();
}

void mouseClicked() {
  lastMCx=mouseX;
  lastMCy=mouseY;
  println(mouseX+" "+mouseY);
}