extract static method

List<Coordinate> extract(List<Coordinate> pts, int start, int end)

Extracts a subsequence of the input {@link Coordinate} array from indices start to end (inclusive). The input indices are clamped to the array size; If the end index is less than the start index, the extracted array will be empty.

@param pts the input array @param start the index of the start of the subsequence to extract @param end the index of the end of the subsequence to extract @return a subsequence of the input array

Implementation

static List<Coordinate> extract(List<Coordinate> pts, int start, int end) {
  start = MathUtils.clamp(start, 0, pts.length).toInt();
  end = MathUtils.clamp(end, -1, pts.length).toInt();

  int npts = end - start + 1;
  if (end < 0) npts = 0;
  if (start >= pts.length) npts = 0;
  if (end < start) npts = 0;

  List<Coordinate> extractPts = []; //..length = (npts);
  if (npts == 0) return extractPts;

  // int iPts = 0;
  for (int i = start; i <= end; i++) {
    extractPts.add(pts[i]);
    // extractPts[iPts++] = pts[i];
  }
  return extractPts;
}