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+<?php
+/**
+ *
+ * EGMapCoord Class
+ * Modified by Antonio Ramirez Cobos
+ * to be integrated to Yii as an extension
+ * @link http://www.ramirezcobos.com
+ * @since 2010-12-22
+ *
+ * GoogleMap Coords
+ * @author Fabrice Bernhard
+ *
+ * @copyright
+ * info as this library is a modified version of Fabrice Bernhard
+ *
+ * Copyright (c) 2008 Fabrice Bernhard
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ * The above copyright notice and this permission notice shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+ * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+class EGMapCoord
+{
+ const EARTH_RADIUS = 6380;
+ /**
+ * Latitude
+ *
+ * @var float
+ */
+ protected $latitude;
+ /**
+ * Longitude
+ *
+ * @var float
+ */
+ protected $longitude;
+
+ public function __construct($latitude = null, $longitude = null)
+ {
+ $this->latitude = floatval($latitude);
+ $this->longitude = floatval($longitude);
+ }
+
+
+ /**
+ * @return float
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function getLatitude()
+ {
+
+ return (float) $this->latitude;
+ }
+
+ /**
+ * @return float
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function getLongitude()
+ {
+
+ return (float) $this->longitude;
+ }
+
+ /**
+ *
+ * @param float $latitude
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function setLatitude($latitude)
+ {
+ $this->latitude = floatval($latitude);
+ }
+
+ /**
+ *
+ * @param float $latitude
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function setLongitude($longitude)
+ {
+ $this->longitude = floatval($longitude);
+ }
+
+ /**
+ *
+ * @param $string
+ * @return EGMapCoord
+ * @author fabriceb
+ */
+ public static function createFromString($string)
+ {
+ $coord_array = explode(',',$string);
+ if (count($coord_array)==2)
+ {
+ $latitude = floatval(trim($coord_array[0]));
+ $longitude = floatval(trim($coord_array[1]));
+
+ return new EGMapCoord($latitude,$longitude);
+ }
+
+ return null;
+ }
+
+ /**
+ *
+ * @return string
+ */
+ public function toJs( )
+ {
+ return 'new google.maps.LatLng('.$this->__toString().')';
+ }
+
+ /**
+ * Lng to Pix
+ * cf. a World's map according to Google http://mt0.google.com/mt/v=ap.92&hl=en&x=0&y=0&z=0&s=
+ *
+ * @param float $lng
+ * @param integer $zoom
+ * @return integer
+ * @author fabriceb
+ * @since Feb 18, 2009 fabriceb
+ */
+ public static function fromLngToPix($lng,$zoom)
+ {
+ $lngrad = deg2rad($lng);
+ $mercx = $lngrad;
+ $cartx = $mercx + pi();
+ $pixelx = $cartx * 256/(2*pi());
+ $pixelx_zoom = $pixelx * pow(2,$zoom);
+
+ return $pixelx_zoom;
+ }
+
+ /**
+ * Lat to Pix
+ * cf. a World's map according to Google http://mt0.google.com/mt/v=ap.92&hl=en&x=0&y=0&z=0&s=
+ *
+ * @param float $lat
+ * @param integer $zoom
+ * @return integer
+ * @author fabriceb
+ * @since Feb 18, 2009 fabriceb
+ */
+ public static function fromLatToPix($lat,$zoom)
+ {
+ if ($lat == 90)
+ {
+ $pixely = 0;
+ }
+ else if ($lat == -90)
+ {
+ $pixely = 256;
+ }
+ else
+ {
+ $latrad = deg2rad($lat);
+ $mercy = log(tan(pi()/4+$latrad/2));
+ $carty = pi() - $mercy;
+ $pixely = $carty * 256 / 2 / pi();
+ $pixely = max(0, $pixely); // correct rounding errors near north and south poles
+ $pixely = min(256, $pixely); // correct rounding errors near north and south poles
+ }
+ $pixely_zoom = $pixely * pow(2,$zoom);
+
+ return $pixely_zoom;
+ }
+
+ /**
+ * Pix to Lng
+ * cf. a World's map according to Google http://mt0.google.com/mt/v=ap.92&hl=en&x=0&y=0&z=0&s=
+ *
+ * @param integer $pix
+ * @param integer $zoom
+ * @return float
+ * @author fabriceb
+ * @since Feb 18, 2009 fabriceb
+ */
+ public static function fromPixToLng($pixelx_zoom,$zoom)
+ {
+ $pixelx = $pixelx_zoom / pow(2,$zoom);
+ $cartx = $pixelx / 256 * 2 * pi();
+ $mercx = $cartx - pi();
+ $lngrad = $mercx;
+ $lng = rad2deg($lngrad);
+
+ return $lng;
+ }
+
+ /**
+ * Pix to Lat
+ * cf. a World's map according to Google http://mt0.google.com/mt/v=ap.92&hl=en&x=0&y=0&z=0&s=
+ *
+ * @param integer $pix
+ * @param integer $zoom
+ * @return float
+ * @author fabriceb
+ * @since Feb 18, 2009 fabriceb
+ */
+ public static function fromPixToLat($pixely_zoom,$zoom)
+ {
+ $pixely = $pixely_zoom / pow(2,$zoom);
+ if ($pixely == 0)
+ {
+ $lat = 90;
+ }
+ else if ($pixely == 256)
+ {
+ $lat = -90;
+ }
+ else
+ {
+ $carty = $pixely / 256 * 2 * pi();
+ $mercy = pi() - $carty;
+ $latrad = 2 * atan(exp($mercy))-pi()/2;
+ $lat = rad2deg($latrad);
+ }
+
+ return $lat;
+ }
+
+ /**
+ * Calculates the center of an array of coordiantes
+ *
+ * @param EGMapCoord[] $coords
+ * @return EGMapCoord
+ * @author fabriceb
+ * @since 2009-05-02
+ */
+ public static function getMassCenterCoord($coords)
+ {
+ if (count($coords)==0)
+ {
+
+ return null;
+ }
+ $center_lat = 0;
+ $center_lng = 0;
+ foreach($coords as $coord)
+ {
+ /* @var $coord EGMapCoord */
+ $center_lat += $coord->getLatitude();
+ $center_lng += $coord->getLongitude();
+ }
+
+ return new EGMapCoord($center_lat/count($coords),$center_lng/count($coords));
+ }
+
+ /**
+ * Calculates the center of an array of coordiantes
+ *
+ * @param EGMapCoord[] $coords
+ * @return EGMapCoord
+ * @author fabriceb
+ * @since 2009-05-02
+ */
+ public static function getCenterCoord($coords)
+ {
+ $bounds = EGMapBounds::getBoundsContainingCoords($coords);
+
+ return $bounds->getCenterCoord();
+ }
+
+ /**
+ * toString method
+ *
+ * @return string
+ *
+ * @author fabriceb
+ * @since 2009-05-02
+ * @since 2010-04-21 added (float) to force . instead of , as separator. If still not working use number_format($this->getLongitude(), 10, '.', '');
+ */
+ public function __toString()
+ {
+
+ return ((float) $this->getLatitude()).', '.((float) $this->getLongitude());
+ }
+
+ /**
+ * very approximate calculation of the distance in kilometers between two coordinates
+ *
+ * @param EGMapCoord $coord2
+ * @return float
+ *
+ * @author fabriceb
+ * @since 2009-05-03
+ */
+ public function distanceFrom($coord2)
+ {
+ $lat_dist = abs($this->getLatitude()-$coord2->getLatitude());
+ $lng_dist = abs($this->getLongitude()-$coord2->getLongitude());
+
+ $rad_dist = deg2rad(sqrt(pow($lat_dist,2)+pow($lng_dist,2)));
+
+ return $rad_dist * self::EARTH_RADIUS;
+ }
+
+ /**
+ * exact distance with spherical law of cosines
+ *
+ * @param EGMapCoord $coord2
+ * @return float
+ * @see http://www.zipcodeworld.com/samples/distance.php.html
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function exactDistanceSLCFrom($coord2)
+ {
+ $lat1 = $this->getLatitude();
+ $lat2 = $coord2->getLatitude();
+ $lon1 = $this->getLongitude();
+ $lon2 = $coord2->getLongitude();
+
+ $theta = $lon1 - $lon2;
+ $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
+ $dist = acos($dist);
+ $dist = rad2deg($dist);
+ $miles = $dist * 60 * 1.1515;
+
+ return $miles * 1.609344;
+ }
+
+ /**
+ * exact distance with Haversine formula
+ *
+ * @param EGMapCoord $coord2
+ * @return float
+ * @see http://www.movable-type.co.uk/scripts/latlong.html
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public function exactDistanceFrom($coord2)
+ {
+ $lat1 = deg2rad($this->getLatitude());
+ $lat2 = deg2rad($coord2->getLatitude());
+ $lon1 = deg2rad($this->getLongitude());
+ $lon2 = deg2rad($coord2->getLongitude());
+
+ $dLatHalf = ($lat2 - $lat1) / 2;
+ $dLonHalf = ($lon2 - $lon1) / 2;
+
+ $a = pow(sin($dLatHalf), 2) + cos($lat1) * cos($lat2) * pow(sin($dLonHalf), 2);
+ $c = 2 * atan2(sqrt($a), sqrt(1 - $a));
+
+ return $c * self::EARTH_RADIUS;
+ }
+
+ /**
+ * very approximate calculation of the distance in kilometers between two coordinates
+ *
+ * @param EGMapCoord $coord1
+ * @param EGMapCoord $coord2
+ * @return float
+ *
+ * @author fabriceb
+ * @since 2009-05-03
+ */
+ public static function distance($coord1, $coord2)
+ {
+
+ return $coord1->distanceFrom($coord2);
+ }
+
+ /**
+ * exact distance with spherical law of cosines
+ *
+ * @param EGMapCoord $coord1
+ * @param EGMapCoord $coord2
+ * @return float
+ * @see exactDistanceSLCFrom
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public static function exactDistanceSLC($coord1, $coord2)
+ {
+
+ return $coord1->exactDistanceSLCFrom($coord2);
+ }
+
+ /**
+ * exact distance with Haversine formula
+ *
+ * @param EGMapCoord $coord1
+ * @param EGMapCoord $coord2
+ * @return float
+ * @see exactDistanceFrom
+ *
+ * @author fabriceb
+ * @since Apr 21, 2010
+ */
+ public static function exactDistance($coord1, $coord2)
+ {
+
+ return $coord1->exactDistanceFrom($coord2);
+ }
+
+ /**
+ *
+ * @param EGMapBounds $gmap_bounds
+ * @return boolean $is_inside
+ *
+ * @author fabriceb
+ * @since Jun 2, 2009 fabriceb
+ */
+ public function isInsideBounds(EGMapBounds $gmap_bounds)
+ {
+
+ return $gmap_bounds->containsGMapCoord($this);
+ }
+} \ No newline at end of file
generated by cgit v1.0-28-g1787 at 2026-01-09 22:29:37 +0000