compare static method

int compare(Object o1, Object o2, int dimensionLimit)

Compares two {@link CoordinateSequence}s for relative order.

@param o1 a {@link CoordinateSequence} @param o2 a {@link CoordinateSequence} @return -1, 0, or 1 depending on whether o1 is less than, equal to, or greater than o2

Implementation

static int compare(Object o1, Object o2, int dimensionLimit) {
  CoordinateSequence s1 = o1 as CoordinateSequence;
  CoordinateSequence s2 = o2 as CoordinateSequence;

  int size1 = s1.size();
  int size2 = s2.size();

  int dim1 = s1.getDimension();
  int dim2 = s2.getDimension();

  int minDim = dim1;
  if (dim2 < minDim) minDim = dim2;
  bool dimLimited = false;
  if (dimensionLimit <= minDim) {
    minDim = dimensionLimit;
    dimLimited = true;
  }

  // lower dimension is less than higher
  if (!dimLimited) {
    if (dim1 < dim2) return -1;
    if (dim1 > dim2) return 1;
  }

  // lexicographic ordering of point sequences
  int i = 0;
  while (i < size1 && i < size2) {
    int ptComp = compareCoordinate(s1, s2, i, minDim);
    if (ptComp != 0) return ptComp;
    i++;
  }
  if (i < size1) return 1;
  if (i < size2) return -1;

  return 0;
}