// create square sprites
// edited from shiffman's Thing

import noc.*;


class Squares {
  //*using private now to encapsulate data*//
  private Vector3D loc;
  private Vector3D vel;
  private Vector3D acc;
  private float maxvel; float r; float g; float b; float x;
  

  //The Constructor (called when the object is first created)
  Squares(Vector3D a, Vector3D v, Vector3D l) {
    acc = a;
    vel = v;
    loc = l;
    maxvel = 8;
  }

  /*Add functions to our thing object to access the location, velocity and acceleration from outside the class*/
  Vector3D getVel() {
    return vel.copy();
  }

  Vector3D getAcc() {
    return acc.copy();
  }

  Vector3D getLoc() {
    return loc.copy();
  }

  void setLoc(Vector3D v) {
    loc = v.copy();
  }

  void setVel(Vector3D v) {
    vel = v.copy();
  }

  void setAcc(Vector3D v) {
    acc = v.copy();
  }

 //main function to operate object)
  void go() {
    update();
    borders();
    render();
  }

  //function to update location
  void update() {
    vel.add(acc);
    loc.add(vel);
    //limit speed to max
    if (vel.magnitude() > maxvel) {
      vel.normalize();
      vel.mult(maxvel);
    }
  }

  void borders() {
    if ((loc.y > height) || (loc.y < 0))  {
      vel.y *= -1;
    }
    if ((loc.x < 0) || (loc.x > width)) {
      vel.x *= -1;
    }
  }

  //function to display
  void render() {
    rectMode(CENTER);
   
   /* //random
    r = random(255);
    g = random(255);
    b = random(255);
    */
    
    //gaussian
    //get gaussian random
      Random generator = new Random();
      
      //following code adapted from DanShiffman's RandomGenerator code
      //get 3 gaussian random numbers w/ mean of 0 and standard deviation of 1.0
      float r = (float) generator.nextGaussian();
      float g = (float) generator.nextGaussian();
      float b = (float) generator.nextGaussian();

      //define standard deviation and mean
      float sd =100; float mean = 100;
      //scale by standard deviation and mean
      //also constrain to between (0,255) since we are dealing with color
      r = constrain((r * sd) + mean,0,255);

      //repeat for g & b
      sd = 100; mean = 200;
      g = constrain((g * sd) + mean,0,255);
      sd = 100; mean = 150;
      b = constrain((b * sd) + mean,0,255);
 
    
    stroke(r, g, b);
    strokeWeight(3);   
    x = random(15);
    rect(loc.x,loc.y,x,x);
   
  }


}