Issue with PolyUtil::distanceToLine function

[gistrec]

Hi, i found the following test for PolyUtil::distanceToLine function in googlemaps/android-maps-utils library:

LatLng startLine = new LatLng(28.05359, -82.41632);
LatLng endLine = new LatLng(28.05310, -82.41634);
LatLng p = new LatLng(28.05342, -82.41594);

double distance = PolyUtil.distanceToLine(p, startLine, endLine);
assertEquals(37.947946, distance, 1e-6);

But for this data PolyUtil::isLocationOnEdge function returns incorrect value 42.989894449231
Code for test:

<?php

require_once("./MathUtil.php");
require_once("./SphericalUtil.php");
require_once("./PolyUtil.php");

$point = ['lat' => 28.05342, 'lng' =>  -82.41594];

$start = ['lat' => 28.05359, 'lng' => -82.41632];
$end   = ['lat' => 28.05310, 'lng' => -82.41634];

$response =  \GeometryLibrary\PolyUtil::distanceToLine($point, $start, $end);

var_dump($response);

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I think this is due to difference in source code between you're library and googlemaps/android-maps-utils library:

+$sa = array('lat' => $p['lat'] - $start['lat'], 'lng' => $p['lng'] - $start['lng']);
+$sb = array('lat' => ($u * ($end['lat'] - $start['lat'])), 'lng' => ($u * ($end['lng'] - $start['lng'])));
+return SphericalUtil::computeDistanceBetween($sa, $sb);
-LatLng su = new LatLng(start.latitude + u * (end.latitude - start.latitude), start.longitude + u * (end.longitude - start.longitude));
-return computeDistanceBetween(p, su);

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I will create PR to fix this issue