Hello,

I've got the following code:

RainDrop [] RainDrops = new RainDrop[100];  //Create an array of 100 drops

void setup(){
  size(640, 480);
  noFill();
  stroke(0, 100);
  strokeWeight(2);
  smooth();
  for(int i = 0; i< RainDrops.length; i++){
    RainDrops[i] = new RainDrop();
}
}

void draw(){
  background(0);
  for(int i = 0; i< RainDrops.length; i++){
  RainDrops[i].display();
  }
}

class RainDrop {
  float xPos; //x position of expanding raindrop
  float yPos; //y position of expanding raindrop
  int ralph; //alpha variable for stroke
 
  RainDrop(){
    xPos = random(width);
    yPos = random(height);
    ralph = 100;
    //noFill();
    //stroke(0, 100);
    //strokeWeight(2);
  }
 
  void display(){
    stroke(255, ralph);
    ellipse(xPos, yPos, 1000/ralph, 1000/ralph);
    if(ralph > 1){
      ralph--;
    } else{
      ralph = 100;
    }
  }
}

Basically, I want to make it "rain" but I'm stuck as to how I should offset the display of the objects to make the patterning more natural.  Any help is greatly appreciated!