public class Line{
  //member
  int x, y, xEnd, yEnd;
  color sColor;
  int alpha;
  int sWeight;
  int counter;
  //constructor
  Line(int x, int y, int xEnd, int yEnd){
    this.x = x;
    this.y = y;
    this.xEnd = xEnd;
    this.yEnd = yEnd;
    sColor = #006699;
    alpha = 100;
    sWeight = 10;
  }
  //method
  void setAlpha(int alpha){
    this.alpha = alpha;
//    bdraw();
  }
  
  void setWeight(int sWeight){
    this.sWeight = sWeight;
//    bdraw();
  }
  
  void bdraw(){
    stroke(sColor, alpha);
    strokeWeight(sWeight);
    line(x, y, xEnd, yEnd);
  }
  void disappear(){
    x = y = xEnd = yEnd = 1000;
    bdraw();
  }
}