Confused.  I want to be able to determine the direction of these lil' objects through there rotation.  So i.e. whatever direction they're "facing" according to the rotate() function within a pushmatrix(), a +1 to the y coordinate will move in that direction, NOT just necessarily down on the screen's set coordinate plane...

I've been generally using Reas/Fry's book and the various examples as a guide, but yeah.  Anyway, thanks in advance.

Here's my code so far

Code:

int partCnt = 200;

offPart[]offP = new offPart[partCnt];
float[]x = new float[partCnt];
float[]y = new float[partCnt];
float[]ang = new float[partCnt];

void setup(){
 size(640,480,P2D);
 frameRate(24);
 noStroke();
 background(102);
 for(int i=0; i < partCnt; i++){  
  x[i] = random(20,width-20);
  y[i] = random(20,height-20);
  ang[i] = random(0,360);
  offP[i] = new offPart(width/2, height/2, 0, ang[i]); 
 }
}

void draw(){
  background(102);
  for(int i=0; i < partCnt; i++){
   x[i] = x[i];
   y[i] = y[i] + random(0,4);
   ang[i] = ang[i] + (PI/2);
   offP[i].move(x[i], y[i], ang[i]);
  }
}

class offPart {
 float x,y;
 int children; 
 float ang;
 float roAngle;
  
  //offPart(){
  // this(0,0,0,0);
  //}
  
  offPart(float x, float y, int children, float ang){
    this.x = x;
    this.y = y;
    this.children = children;
    ang = cos(ang + random(-0.1, 0.1));
    this.ang = ang;
  }
  
//  return detect(float x, float y){
  // for(int i=0; i < 10; i++){
    //  if((x-5)+i == x[l]
    
    
//  }
  
  void move(float x, float y, float angle) {
   angle = radians(angle);
   roAngle = sin(angle + random(-0.1, 0.1));
   pushMatrix();
     translate(x,y);
     rotate(roAngle);
     fill(200);
     ellipseMode(CENTER);
     ellipse(0,0,10,10);
     ellipse(0,10,5,5);
   popMatrix();

  }
  
  
}