class MyPoint {

  float x, y;  // members of class
  boolean isSelected = false;     // is this point selected?

  //********** Constructor
  MyPoint(float xin, float yin){

    x = xin;
    y = yin;
  }


  //********** Move
  void move(float xoff, float yoff){
    x += xoff;
    y += yoff;
  }


  //********** Rotate
  void rotate (float angle, MyPoint ref) {
    float cosa, sina;
    cosa = cos(PI/180*angle);
    sina = sin(PI/180*angle);
    float newx =  (x-ref.x) * cosa - (y-ref.y) * sina + ref.x;
    float newy =  (y-ref.y) * cosa + (x-ref.x) * sina + ref.y;
    x = newx;
    y = newy;
  }


  //********** Scale
  void scale(float xs, float ys, MyPoint ref){
    x = (x-ref.x)*xs + ref.x;
    y = (y-ref.y)*ys + ref.y;
  }

  //************* Select
  boolean select(float xpick, float ypick, float tolerance){

    if(abs(x - xpick) < tolerance  && 
      abs(y - ypick) < tolerance ) {
      isSelected = true;
      return true;
    }
    else {
      isSelected = false;
    }
    return false;

  }

}