public function draw_getexy($a, $b, $d)
{
$d = deg2rad($d);
$arrayXY = array(round($a * Cos($d)), round($b * Sin($d)));
//var_dump($arrayXY);
return $arrayXY;
}
function toGps($x, $y, $h = 0)
{
global $kon;
$y = ($y - 500000) / 0.9999;
$x = (1 * $x + 5000000) / 0.9999;
// 1*x !!!!!!!!!!!
$ab = 1 * $kon['bessel_a'] + 1 * $kon['bessel_b'];
$fi0 = 2 * $x / $ab;
$dif = 1.0;
$p1 = $kon['bessel_a'] * (1 - $kon['bessel_e2']);
$n = 25;
while (abs($dif) > 0 && $n > 0) {
$L = $p1 * ($kon['A'] * $fi0 - $kon['B'] * sin(2 * $fi0) + $kon['C'] * sin(4 * $fi0) - $kon['D'] * sin(6 * $fi0) + $kon['E'] * sin(8 * $fi0));
$dif = 2 * ($x - $L) / $ab;
$fi0 = $fi0 + $dif;
$n--;
}
$N = $kon['bessel_a'] / sqrt(1 - $kon['bessel_e2'] * pow(sin($fi0), 2));
$t = tan($fi0);
$t2 = pow($t, 2);
$t4 = pow($t2, 2);
$cosFi = cos($fi0);
$ni2 = $kon['bessel_e2_'] * pow($cosFi, 2);
$lambda = 0.261799387799149 + $y / ($N * $cosFi) - (1 + 2 * $t2 + $ni2) * pow($y, 3) / (6 * pow($N, 3) * $cosFi) + (5 + 28 * $t2 + 24 * $t4) * pow($y, 5) / (120 * pow($N, 5) * $cosFi);
$fi = $fi0 - $t * (1 + $ni2) * pow($y, 2) / (2 * pow($N, 2)) + $t * (5 + 3 * $t2 + 6 * $ni2 - 6 * $ni2 * $t2) * pow($y, 4) / (24 * pow($N, 4)) - $t * (61 + 90 * $t2 + 45 * $t4) * pow($y, 6) / (720 * pow($N, 6));
$N = $kon['bessel_a'] / sqrt(1 - $kon['bessel_e2'] * pow(Sin($fi), 2));
$X = ($N + $h) * cos($fi) * cos($lambda);
$Y = ($N + $h) * cos($fi) * sin($lambda);
$Z = ($kon['bessel_b2'] / $kon['bessel_a2'] * $N + $h) * sin($fi);
$X -= $kon['dX'];
$Y -= $kon['dY'];
$Z -= $kon['dZ'];
$X /= 1 + $kon['dm'];
$Y /= 1 + $kon['dm'];
$Z /= 1 + $kon['dm'];
$X1 = $X - $kon['M0'][1] * $Y - $kon['M0'][2] * $Z;
$Y1 = -1 * $kon['M1'][0] * $X + $Y - $kon['M1'][2] * $Z;
$Z1 = -1 * $kon['M2'][0] * $X - $kon['M2'][1] * $Y + $Z;
$p = sqrt(pow($X1, 2) + pow($Y1, 2));
$O = atan2($Z1 * $kon['wgs84_a'], $p * $kon['wgs84_b']);
$SinO = sin($O);
$Sin3O = pow($SinO, 3);
$CosO = cos($O);
$Cos3O = pow($CosO, 3);
$fif = atan2($Z1 + $kon['wgs84_e2_'] * $kon['wgs84_b'] * $Sin3O, $p - $kon['wgs84_e2'] * $kon['wgs84_a'] * $Cos3O);
$lambdaf = atan2($Y1, $X1);
$N = $kon['wgs84_a'] / sqrt(1 - $kon['wgs84_e2'] * pow(sin($fif), 2));
$hf = $p / cos($fif) - $N;
$fif = $fif * 180 / pi();
$lambdaf = $lambdaf * 180 / pi();
$retVal = array($fif, $lambdaf, $hf);
return $retVal;
}
function getSunTimes($fh, $La, $Lo, $mois, $jour)
{
$returnArray = array("sunrise" => null, "sunset" => null);
if ($fh == "") {
$fh = date("H") - gmdate("H");
}
if ($La == "") {
$La = 48.833;
}
if ($Lo == "") {
$Lo = -2.333;
}
if ($mois == "") {
$mois = date("m");
}
if ($jour == "") {
$jour = date("d");
}
// Fuseau horaire et coordonnées géographiques
$k = 0.0172024;
$jm = 308.67;
$jl = 21.55;
$e = 0.0167;
$ob = 0.4091;
$PI = 3.1415926536;
//Hauteur du soleil au lever et au coucher
$dr = $PI / 180;
$hr = $PI / 12;
$ht = -40 / 60;
$ht = $ht * $dr;
$La = $La * $dr;
$Lo = $Lo * $dr;
//Date
if ($mois < 3) {
$mois = $mois + 12;
}
//Heure TU du milieu de la journée
$h = 12 + $Lo / $hr;
//Nombre de jours écoulés depuis le 1 Mars O h TU
$J = floor(30.61 * ($mois + 1)) + $jour + $h / 24 - 123;
//Anomalie et longitude moyenne
$M = $k * ($J - $jm);
$L = $k * ($J - $jl);
//Longitude vraie
$S = $L + 2 * $e * Sin($M) + 1.25 * $e * $e * Sin(2 * $M);
//Coordonnées rectangulaires du soleil dans le repère équatorial
$X = Cos($S);
$Y = Cos($ob) * Sin($S);
$Z = Sin($ob) * Sin($S);
//Equation du temps et déclinaison
$R = $L;
$rx = Cos($R) * $X + Sin($R) * $Y;
$ry = -Sin($R) * $X + Cos($R) * $Y;
$X = $rx;
$Y = $ry;
$ET = atan($Y / $X);
$DC = atan($Z / Sqrt(1 - $Z * $Z));
//Angle horaire au lever et au coucher
$cs = (Sin($ht) - Sin($La) * Sin($DC)) / Cos($La) / Cos($DC);
$CalculSol = "";
if ($cs > 1) {
$CalculSol = "Ne se lève pas";
}
if ($cs < -1) {
$CalculSol = "Ne se couche pas";
}
if ($cs == 0) {
$ah = $PI / 2;
} else {
$ah = atan(Sqrt(1 - $cs * $cs) / $cs);
}
if ($cs < 0) {
$ah = $ah + $PI;
}
//Lever du soleil
$Pm = $h + $fh + ($ET - $ah) / $hr;
if ($Pm < 0) {
$Pm = $Pm + 24;
}
if ($Pm > 24) {
$Pm = $Pm - 24;
}
$hs = floor($Pm);
$Pm = floor(60 * ($Pm - $hs));
if (strlen($hs) < 2) {
$hs = "0" . $hs;
}
if (strlen($Pm) < 2) {
$Pm = "0" . $Pm;
}
if ($CalculSol == "") {
$lev = $hs . ":" . $Pm;
} else {
$lev = "00:00";
}
//Coucher du soleil
$Pm = $h + $fh + ($ET + $ah) / $hr;
if ($Pm > 24) {
$Pm = $Pm - 24;
}
if ($Pm < 0) {
$Pm = $Pm + 24;
}
$hs = floor($Pm);
$Pm = floor(60 * ($Pm - $hs));
if (strlen($hs) < 2) {
$hs = "0" . $hs;
}
if (strlen($Pm) < 2) {
$Pm = "0" . $Pm;
}
if ($CalculSol == "") {
$couch = $hs . ":" . $Pm;
} else {
$couch = "00:00";
}
$returnArray["sunrise"] = date("d/M/y G:i:s", strtotime($lev));
$returnArray["sunset"] = date("d/M/y G:i:s", strtotime($couch));
$returnArray["sunrise"] = DateTime::createFromFormat('H:i', $lev);
$returnArray["sunset"] = DateTime::createFromFormat('H:i', $couch);
return $returnArray;
}
/**
* 求角度$d对应的椭圆上的点坐标,$a为横轴长，$b为纵轴长。
* 先通过百分比得到弧度，再通过得到的弧度得出终点坐标。
* 最后将图形画上去。
* @param [type] $a [椭圆横轴长]
* @param [type] $b [椭圆纵轴长]
* @param [type] $d [要画的弧度]
* @return [type] [反回弧度终点的坐标]
*/
public function draw_getexy($a, $b, $d)
{
$d = deg2rad($d);
return array(round($a * Cos($d)), round($b * Sin($d)));
}
<?php
$obrazek = imagecreatetruecolor(600, 600);
$white = imagecolorallocate($obrazek, 255, 255, 255);
$black = imagecolorallocate($obrazek, 0, 0, 0);
$red = imagecolorallocate($obrazek, 255, 0, 0);
$green = imagecolorallocate($obrazek, 0, 255, 0);
$blue = imagecolorallocate($obrazek, 0, 0, 255);
imagefilledrectangle($obrazek, 0, 0, 600, 600, $white);
imageline($obrazek, 300, 0, 300, 600, $black);
imageline($obrazek, 0, 300, 600, 300, $black);
for ($i = 0; $i <= 600; $i = $i + 20) {
imageline($obrazek, $i, 297, $i, 303, $black);
imageline($obrazek, 297, $i, 303, $i, $black);
}
for ($i = -600; $i < 600; $i += 0.01) {
$y = Sin($i * (M_PI / 180)) * 50;
imagesetpixel($obrazek, 300 + $i, 300 - $y, $black);
}
header("Content-type:image/jpeg");
imagejpeg($obrazek);
imagedestroy($obrazek);
function getArcCords($cords, $start, $end, $dir, $prev_lat = 0, $prev_lon = 0)
{
$start = modulo($start, 360);
$end = modulo($end, 360);
$out = "";
$out2 = "";
$angularDistance = $cords[2] / 6371000;
$count = 0;
if ($dir < 0) {
$total_angle = -($end - $start);
} else {
$total_angle = $end - $start;
}
$total_angle = modulo($total_angle, 360);
if ($total_angle == 0) {
$total_angle = 360;
}
for ($i = $start; $count <= 48; $i += $dir * $total_angle / 48) {
//$out.= "$i";
$bearing = deg2rad($i);
$lat = Asin(Sin($cords[0]) * Cos($angularDistance) + Cos($cords[0]) * Sin($angularDistance) * Cos($bearing));
$dlon = Atan2(Sin($bearing) * Sin($angularDistance) * Cos($cords[0]), Cos($angularDistance) - Sin($cords[0]) * Sin($lat));
$lon = fmod($cords[1] + $dlon + M_PI, 2 * M_PI) - M_PI;
$latOut = rad2deg($lat);
$lonOut = rad2deg($lon);
$out .= encode($latOut - $prev_lat) . encode($lonOut - $prev_lon);
$out2 .= "{$lonOut},{$latOut},0 ";
$prev_lat = $latOut;
$prev_lon = $lonOut;
$count++;
}
return array($out, $out2);
}
/**
* @param $coord
* @return string
*/
public function get_circle_cords($coord)
{
$out = "";
$angularDistance = $coord->radius / 6378137;
$center_lat = deg2rad($coord->lat);
$center_lon = deg2rad($coord->lon);
for ($i = 0; $i <= 360; $i++) {
$bearing = deg2rad($i);
$lat = Asin(Sin($center_lat) * Cos($angularDistance) + Cos($center_lat) * Sin($angularDistance) * Cos($bearing));
$dlon = Atan2(Sin($bearing) * Sin($angularDistance) * Cos($center_lat), Cos($angularDistance) - Sin($center_lat) * Sin($lat));
$lon = fmod($center_lon + $dlon + M_PI, 2 * M_PI) - M_PI;
$latOut = rad2deg($lat);
$lonOut = rad2deg($lon);
$out .= $lonOut . ',' . $latOut . ',' . 0 . ' ';
}
return $out;
}
function _effect_distort($image, $factor = 40, $grad = 1, $method = 0)
{
// from http://www.codeproject.com/aspnet/CaptchaNET_2.asp Farshid Hosseini
$width = imagesx($image);
$height = imagesy($image);
$fact = $factor / 25;
$disx = rand(4, 10) * (rand(0, 1) ? 1 : -1) * $fact;
$disy = rand(4, 12) * (rand(0, 1) ? 1 : -1) * $fact;
$yf = rand(30, 45) * $fact;
$xf = rand(80, 95) * $fact;
// from http://www.captcha.ru/captchas/multiwave/
// KCAPTCHA randomize
// periods
$rand1 = mt_rand(750000, 1200000) / 10000000;
$rand2 = mt_rand(750000, 1200000) / 10000000;
$rand3 = mt_rand(750000, 1200000) / 10000000;
$rand4 = mt_rand(750000, 1200000) / 10000000;
// phases
$rand5 = mt_rand(0, 31415926) / 10000000;
$rand6 = mt_rand(0, 31415926) / 10000000;
$rand7 = mt_rand(0, 31415926) / 10000000;
$rand8 = mt_rand(0, 31415926) / 10000000;
// amplitudes
$rand9 = mt_rand(330, 420) / 110;
$rand10 = mt_rand(330, 450) / 110;
// make new canvas img
$canvas = imagecreate($width, $height);
$bgcolor = imagecolorsforindex($image, 0);
$new = imagecolorallocate($canvas, $bgcolor['red'], $bgcolor['green'], $bgcolor['blue']);
$fgcolor = imagecolorsforindex($image, 1);
$new = imagecolorallocate($canvas, $fgcolor['red'], $fgcolor['green'], $fgcolor['blue']);
imagepalettecopy($canvas, $image);
for ($y = 0; $y < $height; $y++) {
for ($x = 0; $x < $width; $x++) {
if (empty($method)) {
// Adds a simple wave
$newX = $x + $disx * Sin(3.141592 * $y / $xf);
$t = ($x - $width / 2) / $yf * 2.4;
$t = $t * $t;
$newY = $y + $disy * exp(-$t) * sin(3.141592 * $x / $yf);
} else {
// KCAPTCHA method
$newX = $x + (sin($x * $rand1 + $rand5) + sin($y * $rand3 + $rand6)) * $rand9;
$newY = $y + (sin($x * $rand2 + $rand7) + sin($y * $rand4 + $rand8)) * $rand10;
}
if ($grad) {
# with gradient effect based on above functions
if ($newY > $height or $newY < 0) {
$newY = 0;
}
if ($newX < 0) {
$newX = 0;
} else {
if ($newX > $width) {
$newX = $width;
}
}
$newcolor = _antialias_color($image, $x, $y, $newX, $newY);
if ($newcolor === false) {
// this is background color
$newcolor = $bgcolor;
}
$r = $newcolor['red'];
$g = $newcolor['green'];
$b = $newcolor['blue'];
$gratio = 120;
$bratio = 100;
$pratio = 125;
$red = (int) $r;
$green = (int) ($newX / $width * $gratio + $g / 255 * $pratio);
$blue = (int) ($newY / $height * $bgatio + $b / 255 * $pratio);
$new = imagecolorallocate($canvas, $red, $green, $blue);
$new = imagecolorclosest($canvas, $red, $green, $blue);
imageSetPixel($canvas, $x, $y, $new);
} else {
if ($newX < 0 || $newY < 0 || $newX >= $width - 1 || $newY >= $height - 1) {
continue;
}
$newcolor = _antialias_color($image, $x, $y, $newX, $newY);
// ignore background
if ($newcolor === false) {
continue;
}
$red = $newcolor['red'];
$green = $newcolor['green'];
$blue = $newcolor['blue'];
$new = imagecolorallocate($canvas, $red, $green, $blue);
$new = imagecolorclosest($canvas, $red, $green, $blue);
imageSetPixel($canvas, $x, $y, $new);
}
}
}
imageCopy($image, $canvas, 0, 0, 0, 0, $width, $height);
}
function E_N_to_Long($East, $North, $a, $b, $e0, $n0, $f0, $PHI0, $LAM0)
{
#Un-project Transverse Mercator eastings and northings back to longitude.
#Input: - _
#eastings (East) and northings (North) in meters; _
#ellipsoid axis dimensions (a & b) in meters; _
#eastings (e0) and northings (n0) of false origin in meters; _
#central meridian scale factor (f0) and _
#latitude (PHI0) and longitude (LAM0) of false origin in decimal degrees.
#REQUIRES THE "Marc" AND "InitialLat" FUNCTIONS
#Convert angle measures to radians
$Pi = 3.14159265358979;
$RadPHI0 = $PHI0 * ($Pi / 180);
$RadLAM0 = $LAM0 * ($Pi / 180);
#Compute af0, bf0, e squared (e2), n and Et
$af0 = $a * $f0;
$bf0 = $b * $f0;
$e2 = (pow($af0, 2) - pow($bf0, 2)) / pow($af0, 2);
$n = ($af0 - $bf0) / ($af0 + $bf0);
$Et = $East - $e0;
#Compute initial value for latitude (PHI) in radians
$PHId = $this->InitialLat($North, $n0, $af0, $RadPHI0, $n, $bf0);
#Compute nu, rho and eta2 using value for PHId
$nu = $af0 / sqrt(1 - $e2 * pow(sin($PHId), 2));
$rho = $nu * (1 - $e2) / (1 - $e2 * pow(Sin($PHId), 2));
$eta2 = $nu / $rho - 1;
#Compute Longitude
$X = pow(cos($PHId), -1) / $nu;
$XI = pow(cos($PHId), -1) / (6 * pow($nu, 3)) * ($nu / $rho + 2 * pow(tan($PHId), 2));
$XII = pow(cos($PHId), -1) / (120 * pow($nu, 5)) * (5 + 28 * pow(tan($PHId), 2) + 24 * pow(tan($PHId), 4));
$XIIA = pow(Cos($PHId), -1) / (5040 * pow($nu, 7)) * (61 + 662 * pow(tan($PHId), 2) + 1320 * pow(Tan($PHId), 4) + 720 * pow(tan($PHId), 6));
$E_N_to_Long = 180 / $Pi * ($RadLAM0 + $Et * $X - pow($Et, 3) * $XI + pow($Et, 5) * $XII - pow($Et, 7) * $XIIA);
return $E_N_to_Long;
}
/** Function for computing the meridional arc - used internally
* @access public
* @param $bFo
* @param $n
* @param $P1
* @param $P2
*/
private function _marc($bFo, $n, $P1, $P2)
{
$n2 = $n * $n;
$n3 = $n * $n * $n;
$Marc = $bFo * ((1 + $n + 5 / 4 * $n2 + 5 / 4 * $n3) * ($P2 - $P1) - (3 * $n + 3 * $n2 + 21 / 8 * $n3) * Sin($P2 - $P1) * Cos($P2 + $P1) + (15 / 8 * $n2 + 15 / 8 * $n3) * Sin(2 * ($P2 - $P1)) * Cos(2 * ($P2 + $P1)) - 35 / 24 * $n3 * Sin(3 * ($P2 - $P1)) * Cos(3 * ($P2 + $P1)));
return $Marc;
}
/** Un-project Transverse Mercator eastings and northings back to longitude.
* @uses marc
* @uses InitialLat
* @param string $East easting in metres
* @param string $North northing in metres
* @param string $a ellipsoid axis in metres
* @param string $b ellipsoid axis in metres
* @param string $e0 eastings false origin
* @param string $n0 northings false origin
* @param integer $f0 central meridian scale factor
* @param double $PHI0 latitude of false origin in dec degrees
* @param double $LAM0 longitude of false origin in dec degrees
*/
private function _eNtoLong($East, $North, $a, $b, $e0, $n0, $f0, $PHI0, $LAM0)
{
//Convert angle measures to radians
$RadPHI0 = $PHI0 * (self::PI / 180);
$RadLAM0 = $LAM0 * (self::PI / 180);
//Compute af0, bf0, e squared (e2), n and Et
$af0 = $a * $f0;
$bf0 = $b * $f0;
$e2 = (pow($af0, 2) - pow($bf0, 2)) / pow($af0, 2);
$n = ($af0 - $bf0) / ($af0 + $bf0);
$Et = $East - $e0;
//Compute initial value for latitude (PHI) in radians
$PHId = $this->_initialLat($North, $n0, $af0, $RadPHI0, $n, $bf0);
//Compute nu, rho and eta2 using value for PHId
$nu = $af0 / sqrt(1 - $e2 * pow(sin($PHId), 2));
$rho = $nu * (1 - $e2) / (1 - $e2 * pow(Sin($PHId), 2));
$eta2 = $nu / $rho - 1;
//Compute Longitude
$X = pow(cos($PHId), -1) / $nu;
$XI = pow(cos($PHId), -1) / (6 * pow($nu, 3)) * ($nu / $rho + 2 * pow(tan($PHId), 2));
$XII = pow(cos($PHId), -1) / (120 * pow($nu, 5)) * (5 + 28 * pow(tan($PHId), 2) + 24 * pow(tan($PHId), 4));
$XIIA = pow(Cos($PHId), -1) / (5040 * pow($nu, 7)) * (61 + 662 * pow(tan($PHId), 2) + 1320 * pow(Tan($PHId), 4) + 720 * pow(tan($PHId), 6));
$E_N_to_Long = 180 / self::PI * ($RadLAM0 + $Et * $X - pow($Et, 3) * $XI + pow($Et, 5) * $XII - pow($Et, 7) * $XIIA);
return $E_N_to_Long;
}
private static function solarsystem($tjd, $body, $origin, &$pos, &$vel)
{
$ierr = 0;
$pos2 = array();
$p = array();
//3x3
if (SolarTerm::$tlast == 0.0) {
$oblr = 0.40909280420293637;
SolarTerm::$sine = sin($oblr);
SolarTerm::$cose = cos($oblr);
SolarTerm::$tmass = 1.0;
for ($i = 0; $i < 4; $i += 1) {
SolarTerm::$tmass += 1.0 / SolarTerm::$pm[(int) $i];
}
SolarTerm::$tlast = 1.0;
}
$pos = array();
$vel = array();
if ($body == 0 || $body == 1 || $body == 10) {
for ($i = 0; $i < 3; $i += 1) {
$pos[(int) $i] = $vel[(int) $i] = 0.0;
}
} else {
if ($body != 2 && $body != 3) {
return 2;
}
for ($i = 0; $i < 3; $i += 1) {
$qjd = $tjd + doubleval($i - 1) * 0.1;
$ras = 0;
$decs = 0;
$diss = 0;
SolarTerm::sun_eph($qjd, $ras, $decs, $diss);
Novas::radec2vector($ras, $decs, $diss, $pos2);
Novas::precession($qjd, $pos2, 2451545.0, $pos);
$p[$i][0] = -$pos[0];
$p[$i][1] = -$pos[1];
$p[$i][2] = -$pos[2];
}
for ($i = 0; $i < 3; $i += 1) {
$pos[(int) $i] = $p[1][(int) $i];
$vel[(int) $i] = ($p[2][(int) $i] - $p[0][(int) $i]) / 0.2;
}
}
if ($origin == 0) {
if (abs($tjd - SolarTerm::$tlast) >= 1.0E-6) {
for ($i = 0; $i < 3; $i += 1) {
SolarTerm::$pbary[(int) $i] = SolarTerm::$vbary[(int) $i] = 0.0;
}
for ($i = 0; $i < 4; $i += 1) {
$dlon = SolarTerm::$pl[(int) $i] + SolarTerm::$pn[(int) $i] * ($tjd - 2451545.0);
$dlon %= 6.283185307179586;
$sinl = Sin($dlon);
$cosl = Cos($dlon);
$x = SolarTerm::$pa[(int) $i] * $cosl;
$y = SolarTerm::$pa[(int) $i] * $sinl * SolarTerm::$cose;
$z = SolarTerm::$pa[(int) $i] * $sinl * SolarTerm::$sine;
$xdot = -SolarTerm::$pa[(int) $i] * SolarTerm::$pn[(int) $i] * $sinl;
$ydot = SolarTerm::$pa[(int) $i] * SolarTerm::$pn[(int) $i] * $cosl * SolarTerm::$cose;
$zdot = SolarTerm::$pa[(int) $i] * SolarTerm::$pn[(int) $i] * $cosl * SolarTerm::$sine;
$f = 1.0 / (SolarTerm::$pm[(int) $i] * SolarTerm::$tmass);
SolarTerm::$pbary[0] += $x * $f;
SolarTerm::$pbary[1] += $y * $f;
SolarTerm::$pbary[2] += $z * $f;
SolarTerm::$vbary[0] += $xdot * $f;
SolarTerm::$vbary[1] += $ydot * $f;
SolarTerm::$vbary[2] += $zdot * $f;
}
SolarTerm::$tlast = $tjd;
}
for ($i = 0; $i < 3; $i += 1) {
$pos[(int) $i] -= SolarTerm::$pbary[(int) $i];
$vel[(int) $i] -= SolarTerm::$vbary[(int) $i];
}
}
return $ierr;
}
function getArcCords($cords, $start, $end, $dir, $prev_lat = 0, $prev_lon = 0)
{
$out = "";
$out2 = array();
$angularDistance = $cords[2] / geometry::EARTH_RADIUS;
$count = 0;
if ($dir < 0) {
$totat_angle = $end - $start;
} else {
if ($start > $end) {
$end += 360;
$totat_angle = -($start - $end);
} else {
$totat_angle = -($start - $end) - 360;
}
}
for ($i = $start; $count <= 48; $i += $totat_angle / 48) {
//$out.= "$i";
$bearing = deg2rad($i);
$lat = Asin(Sin($cords[0]) * Cos($angularDistance) + Cos($cords[0]) * Sin($angularDistance) * Cos($bearing));
$dlon = Atan2(Sin($bearing) * Sin($angularDistance) * Cos($cords[0]), Cos($angularDistance) - Sin($cords[0]) * Sin($lat));
$lon = fmod($cords[1] + $dlon + M_PI, 2 * M_PI) - M_PI;
$latOut = rad2deg($lat);
$lonOut = rad2deg($lon);
$out .= encode($latOut - $prev_lat) . encode($lonOut - $prev_lon);
$out2[] = array($lonOut, $latOut);
$prev_lat = $latOut;
$prev_lon = $lonOut;
$count++;
}
return array($out, $out2);
}