monoChain* directedLineLoopToMonoChainLoop ( directedLine * loop )

Definition at line 233 of file monoChain.cc.

Referenced by directedLineLoopListToMonoChainLoopList().

{
  directedLine *temp;
  monoChain *ret=NULL;

  //find the first cusp
  directedLine *prevCusp=NULL;
  directedLine *firstCusp;

  if(isCusp(loop))
    prevCusp = loop;
  else
    {
      for(temp = loop->getNext(); temp != loop; temp = temp->getNext())
    if(isCusp(temp))
      break;
      prevCusp = temp;
    }
  firstCusp = prevCusp;
//printf("first cusp is (%f,%f), (%f,%f), (%f,%f)\n", prevCusp->getPrev()->head()[0], prevCusp->getPrev()->head()[1], prevCusp->head()[0], prevCusp->head()[1], prevCusp->tail()[0], prevCusp->tail()[1]);

  for(temp = prevCusp->getNext(); temp != loop; temp = temp->getNext())
    {
      if(isCusp(temp))
    {
//printf("the cusp is (%f,%f), (%f,%f), (%f,%f)\n", temp->getPrev()->head()[0], temp->getPrev()->head()[1], temp->head()[0], temp->head()[1], temp->tail()[0], temp->tail()[1]);
      if(ret == NULL)
        {
          ret = new monoChain(prevCusp, temp);
        }
      else
        ret->insert(new monoChain(prevCusp, temp));
      prevCusp = temp;    
    }
    }
  ret->insert(new monoChain(prevCusp, firstCusp));

  return ret;
}

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