class street {
  float w=80;                                      // street width
  pt B=new pt(700,100), F=new pt(600,700);         // front and back end-points
  boolean pickedB=false, pickedF=false, picked=false;
  street (float bx, float by, float fx, float fy, float pw) {B.x=bx; B.y=by; F.x=fx; F.y=fy; w=pw;};
  void paint()
  {
    fill(200,200,100);
    noStroke(); 
    vec N=B.vecTo(F).left();
    N.unit();
    N.mul(w);
    beginShape();
      B.movedBy(N).vert(); 
      F.movedBy(N).vert();
      N.back();
      F.movedBy(N).vert();
      B.movedBy(N).vert(); 
    endShape();
  };
  void paintLine()
  {
    B.showLineTo(F);
  };
  boolean selected() {
    pickedF = F.vecTo(mouse()).norm()<30; 
    pickedB = B.vecTo(mouse()).norm()<30; 
    picked=pickedF||pickedB; return(picked); }
  void track() {pt M=mouse(); if(pickedF) {F.setTo(M);} if(pickedB) {B.setTo(M);} }
  void paintDots() {if (!pickedB) {fill(yellow); B.show(20);};  if (!pickedF) {fill(yellow); F.show(20); }; };
  void snap() {
    if (pickedB) {if(abs(B.x-F.x)<5) {B.x=F.x;}; if(abs(B.y-F.y)<5) {B.y=F.y;}; }; 
    if (pickedF) {if(abs(F.x-B.x)<5) {F.x=B.x;}; if(abs(F.y-B.y)<5) {F.y=B.y;}; }; 
    }
  String toString() {
    String list = str(B.x) + " " + str(B.y) + " " + str(F.x) + " " + str(F.y) + " " + str(w);
    return list;
  } 
}