//Read-write utilities for polyloops
// by Jarek Rossignac

void writePts() { for (int i=0; i<vn; i++) {P[i].write();};};
void writeNewPts() { println(); println(svn+" points:"); for (int i=0; i<svn; i++) {C[i].write();};};


void savePts() {
  println("xvn="+xvn);
  String [] inppts = new String [xvn+1];
  int s=0;
  inppts[s++]=str(xvn);
  if (saveNew) { for (int i=0; i<xvn; i++) {inppts[s++]=str(C[i].x)+","+str(C[i].y);};}
  else { for (int i=0; i<xvn; i++) {inppts[s++]=str(P[i].x)+","+str(P[i].y);};}
  saveStrings("points.pts",inppts);
  };

void loadPts() {
  String [] ss = loadStrings("points.pts");
  String subpts;
  int s=0;
  int comma;
  vn = int(ss[s]);
  for(int i=0;i<vn; i++) {
      comma=ss[++s].indexOf(',');
      P[i]=new pt (float(ss[s].substring(0, comma)), float(ss[s].substring(comma+1, ss[s].length())));
    };
  };