int brushsize = 15;
float[] pigments;
Drip[] drips;
int num;
int affectrange = 15;
int maxaffect = 20;
int mx;
float lastRelease=-1;
boolean doClear=false;

void setup()
{
  size(600, 350);
  ellipseMode(CENTER);
  noStroke();
  smooth();
  background(255);
  fill(255, 102, 153, 204);
  framerate(60);
  //=================================
  drips = new Drip[width];
  pigments = new float[width];
  for(int i=0; i<width; i++)
    pigments[i] = 0.0;

  float step = height / maxaffect;
  float tmpstep = 0;

}

void draw()
{
  if(doClear) {
    background(255);
    doClear=false;
  }
  if(mousePressed) {
    //ellipse(mouseX, mouseY, 15, 15);
    if (mouseX <= maxaffect) mx = maxaffect+1;
    else if (mouseX >= width) mx = width-maxaffect-1;
    else mx = mouseX;
    store(mx, 25);
  }
}//draw

void mousePressed() {
  float time=millis();
  if(lastRelease!=-1 && (time-lastRelease)<200) {
    doClear=true;
    drips = new Drip[width];
    pigments = new float[width];
    for(int i=0; i<width; i++)
      pigments[i] = 0.0;
  }
  else lastRelease=time;
}

void store(int x, int y) {
  int xl, xr, range;

  if(pigments[x] != 0) {

    /*
    int tmp = 0;
    for (int i=-15; i<15; i++) {
      tmp += pigments[x+i];
    }
    tmp /= 30;
    affectrange = (int)(tmp - (  tmp / ((height) / 100)))/2;
    */
    affectrange = (int)(40 - (drips[x].mass / (height / 100)));
    if(affectrange <= 0) affectrange = (int)random(1, 5);

  }
  else affectrange = maxaffect;

  xl = x-affectrange;
  xr = x+affectrange;
  if(xl < 0) xl = 10;
  if(xr > width) xr = width-10;
  range = xr-xl;
  if(range == 0) range = 1;

  float sinoffset = 180 / range;
  float sinstep = 0;
  int tmpxl = xl;

  for (int i=0; i<range; i++) {
    x = tmpxl;

    sinstep += sinoffset;
    pigments[x] += (sin(radians(sinstep)));

    if (pigments[x] > -1) {
      if(drips[x] == null) {
        drips[x] = new Drip(x, y, pigments[x]);
        drips[x].init();
      }
      else {
        drips[x].update(pigments[x]);
      }
    }
    tmpxl++;
  }

  sinstep = 0;
  tmpxl = xl;

  for (int i=0; i<range; i++) {
    x = tmpxl;
    if ((pigments[x] < (pigments[x+1]+10) && pigments[x] < (pigments[x-1]+10)) || range == 2) {

      sinstep += sinoffset;
      pigments[x] += sin(radians(sinstep));
      //fill(255, 255, 0, 255);
      drips[x].update(pigments[x]);
      //fill(255, 102, 153, 204);
    }

    else {
      pigments[x] += sin(radians(sinstep));
      //fill(0, 0, 255, 255);
      drips[x].update(pigments[x]);
      //fill(255, 102, 153, 204);
    }
    tmpxl++;
  }

}//store