constructor(hour,minutes,seconds){

    this.seeds = [];

    this.x = random(100,500);

    this.y = random(100,500);

    this.center = createVector(this.x, this.y);

    //length of stem

    this.stem = minutes;

    //number of seeds

    this.seedtot = 60;

    //which seed to fall

    this.nseed = seconds%60;

    //length of feather

    this.l = 20;

    //number of feather

    this.n = 10;

    for (var i=0; i<this.seedtot; i++){

      this.seeds.push(new Seed(this.x,this.y,this.l,this.n,this.nseed));

    }

    this.gen = false;

  }

  update(minutes,seconds){

    this.s = minutes;

    this.nseed = seconds%60;

    for (var i=0; i<this.seeds.length; i++){

      //which seeds to move

      if (this.seeds.length>0 && i<= this.nseed){

        this.seeds[i].move = true;

      }

    }

    //refresh every minute

    if (this.nseed == 59){

      this.gen = true;

    }

    if (this.nseed == 0&&this.gen==true){

      this.seeds=[];

      for (var j=0; j<this.seedtot; j++){

        this.seeds.push(new Seed(this.x,this.y,this.l,this.n,this.nseed));

      }

      this.gen = false;

    }

  }

  show(){

    //draw stem

    stroke(225);

    noFill();

    arc(this.center.x, this.center.y+this.s/2,10,this.s,-PI/2,PI/2);

    //draw seed

    for (let seed of this.seeds){

      seed.show();

    }

    //draw center

    for (var k=this.l*1.5; k>0; k--){

      noStroke();

      fill(255,255,255,80*(this.l*1.5-k)/this.l*1.5);

      circle(this.center.x,this.center.y,k);

    }

  } 

}

​

​

class Seed {

  constructor(x,y,l,n,sec){

    this.x = x;

    this.y = y;

    this.pos = createVector(x, y);

    this.v = p5.Vector.random2D();

    print(this.v);

    this.v.setMag(random(0.8,1.2));

    this.angle = 0;

    //length of feather

    this.l = l;

    //number of feather

    this.n = n;

    //not cluster in the cetner

    for (var i=0; i<this.l; i++){

      this.pos.add(this.v);

    }

    this.move = false;

    this.sec = sec;

  }

  show(){

    //draw each seed

    for (var i=0; i<this.n; i++){

      push();

      translate(this.pos.x,this.pos.y);

      rotate(this.v.heading());

      strokeWeight(1);

      stroke(225,225,225,125*sin(PI*(i/this.n)));

      line(0,0,this.l*sin(this.angle+i*PI/15),this.l*cos(this.angle+i*PI/15));

      pop();

    }

    //draw seed stem

    push();

    translate(this.pos.x,this.pos.y);

    rotate(-(this.v.heading()));

    strokeWeight(1);

    stroke(225);

    //line(0,0,this.l*sin(this.angle+i*PI/15),this.l*cos(this.angle+i*PI/15));

    pop();

    if (this.move == true){

      this.pos.add(this.v);

    }

  }

}

​

​