/****************************************************************/
/* cs4496/7496: Computer Animation, Instructor: Jarek Rossignac */
/* Project P4: Morph                                            */
/*                                                              */
/* Solution by                                                  */
/*             Florian Hecht                                    */
/*                                                              */
/* November 2006                                                */
/****************************************************************/

/* functions to load and store the twists and translations that define a morph */

void saveTwists(String filename) {
  int c = twists.size();
  String[] ss = new String[c*6];
  
  for (int i = 0; i < c; i++) {
    Twist tw = (Twist)twists.get(i);
    
    ss[6*i + 0] = tw.A.toString2D();
    ss[6*i + 1] = tw.B.toString2D();
    ss[6*i + 2] = tw.aDir.toString2D();
    ss[6*i + 3] = tw.bDir.toString2D();
    ss[6*i + 4] = tw.sigmaVec.toString2D();
    ss[6*i + 5] = Boolean.toString(tw.simpleTrans);
  }
  
  saveStrings(filename, ss);
}

void loadTwists(String filename) {
  String[] ss = loadStrings(filename);
  int c = ss.length / 6;
  pt A = new pt(0, 0, 0), B = new pt(0, 0, 0);
  vec aDir = new vec(0, 0, 0), bDir = new vec(0, 0, 0);
  vec sigma = new vec(0, 0, 0);
  
  twists.clear();
  
  for (int i = 0; i < c; i++) {
    
    A.fromString2D(ss[6*i + 0]);
    B.fromString2D(ss[6*i + 1]);
    aDir.fromString2D(ss[6*i + 2]);
    bDir.fromString2D(ss[6*i + 3]);
    sigma.fromString2D(ss[6*i + 4]);
    boolean simple = boolean(ss[6*i + 5]);
    
    Twist tw = new Twist();
    tw.createTwist(A, aDir, B, bDir);
    tw.sigmaVec = sigma.make();
    tw.simpleTrans = simple;
    
    twists.add(tw);
  }
}