InI4

<?php
/**
 * An implementation of a modified Ramer-Douglas-Peucker algorithm for reducing
 * the number of points on a polyline (aka polygonal chain aka track).
 * https://en.wikipedia.org/wiki/Polygonal_chain
 *
 * For more information, see:
 * http://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm
 *
 * Main change is how to measure distance between a connection (aka line, reference)