extractCoordinates method
Implementation
List<Coordinate> extractCoordinates(List segs) {
List<Coordinate> pts = List.empty(growable: true);
LineSegment? seg = null;
for (int i = 0; i < segs.length; i++) {
seg = segs[i] as LineSegment;
pts.add(seg.p0);
}
// add last point
pts.add(seg!.p1);
return pts;
}