class StormDraw extends Sprite
{
  //draw value
  float r[] = new float[256];
  float g[] = new float[256];
  float b[] = new float[256];
  float a[] = new float[256];
  int value = 0;

  StormDraw(SoundInfo sinfo){
    super(sinfo);
    refresh();
  }

  void refresh(){
    for(int i=0; i<256; i++){
      r[i] = random(255);
      g[i] = random(255);
      b[i] = random(255);
      a[i] = random(100);
    }

    for(int i=0; i<unitNum; ++i){
      unitsize[i]=random(5);
    }

    ellipseMode(CENTER);
    rectMode(CENTER);
  }



  void render(boolean isCut){

    super.render(isCut);
    storm();
  }

  void none(){
  }

 
  /////////////////////
  //d. drawing storm
  float G = 1/1.618033989;
  float GA = 360 - 360 * G;
  float rgrowth = 1.005;
  float cur = 10.0;
  float rad, rot, vs, xx, yy;
  int unitNum = 800;
  float unitX[] = new float[800];
  float unitY[] = new float[800];
  float tX[] = new float[800];
  float tY[] = new float[800];
  float unitsize[] = new float[800];

  void storm(){
    rad = level * 10;
    rot = 0;
    vs =0;

    if (cur<0) {
      for (int i=0; i<unitNum; ++i) {
        unitsize[i] = min(15, max(1, i * level * 0.02));
        rot += GA + level;
        rot -= int(rot/360)*360;
        rad *= rgrowth;
        vs = vs + 2;
        vs = (vs > 360)? vs : 0;
        xx = cos(rot * PI/180 + vs * PI/180) * rad + width / 2;
        yy = sin(rot * PI/180 + vs * PI/180) * rad + height/ 2;
        tX[i] = xx;
        tY[i] = yy;
        r[0]=min(150, level * 256);
        g[0]= min(200, level * 256);
        b[0] = min(255, level * 128);
        fill(r[0],g[0],b[0],max(80, level * 255));
        rect(xx,yy,unitsize[i],unitsize[i]);
      }
      cur = 5;
    }
    cur--;
    //cur = unitNum;
    for (int i=0; i<unitNum; ++i) {
      unitX[i] += (tX[i]-unitX[i])*0.15;
      unitY[i] += (tY[i]-unitY[i])*0.15;

      if (level < 0.5) {
        r[0] = random(255);
        g[0] = min(200, (level * 200));
        b[0] = min(255, (level * 128 + 100));
      } 
      else {
        r[0] = min(255,(level * 255));
        g[0] =  min(255,(level * 200));
        b[0] = min(255,(level * 128 + 100));
      }
      fill(r[0],g[0],b[0],min(255,level * 255));
      rect(unitX[i], unitY[i], unitsize[i], unitsize[i]);
    }
  }
}