source: trunk/inc/RadiusAssistant.inc.php

<?php

class RadiusAssistant {

        var $maxLat;
        var $minLat;
        var $maxLong;
        var $minLong;

        function RadiusAssistant($Latitude, $Longitude, $Miles) {
                //global $maxLat, $minLat, $maxLong, $minLong;
                $EQUATOR_LAT_MILE = 69.172;
                $this->maxLat = $Latitude + $Miles / $EQUATOR_LAT_MILE;
                $this->minLat = $Latitude - ($this->maxLat - $Latitude);
                $this->maxLong = $Longitude + $Miles / (cos($minLat * M_PI / 180) * $EQUATOR_LAT_MILE);
                $this->minLong = $Longitude - ($this->maxLong - $Longitude);
        }

        function MaxLatitude() {
                //return $GLOBALS["maxLat"];
                return $this->maxLat;
        }
        function MinLatitude() {
                //return $GLOBALS["minLat"];
                return $this->minLat;
        }
        function MaxLongitude() {
                //return $GLOBALS["maxLong"];
                return $this->maxLong;
        }
        function MinLongitude() {
                //return $GLOBALS["minLong"];
                return $this->minLong;
        }

}

?>