本文整理汇总了PHP中pi函数的典型用法代码示例。如果您正苦于以下问题：PHP pi函数的具体用法？PHP pi怎么用？PHP pi使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了pi函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
示例1: __construct
function __construct($NAME = NULL, $DESCRIPTION = NULL, $LONG = NULL, $LAT = NULL, $ALT = NULL, $HEAD = NULL, $TILT = NULL, $RANGE = NULL)
{
$this->NAME = is_null($NAME) ? "Building and Wall" : $NAME;
$this->DESCRIPTION = is_null($DESCRIPTION) ? "Building and Wall share textures" : $DESCRIPTION;
$this->LONG = is_null($LONG) ? "-79.37380981445312" : $LONG;
$this->LAT = is_null($LAT) ? "43.656211853027344" : $LAT;
$this->ALT = is_null($ALT) ? "311" : $ALT;
$this->HEAD = is_null($HEAD) ? "-40.34248730008207" : $HEAD;
$this->TILT = is_null($TILT) ? "34.9531454664821" : $TILT;
$this->RANGE = is_null($RANGE) ? "50.90180128676323" : $RANGE;
$this->RADIAN = 180 / pi();
//create the xml document
$this->xmlDoc = new DOMDocument('1.0', 'UTF-8');
$kml = $this->xmlDoc->appendChild($this->xmlDoc->createElementNS('http://www.opengis.net/kml/2.2', 'kml'));
//create the root element
$this->folTag = $kml->appendChild($this->xmlDoc->createElement("Folder"));
$this->folTag->appendChild($this->xmlDoc->createElement("name", $this->NAME));
$this->folTag->appendChild($this->xmlDoc->createElement("description", $this->DESCRIPTION));
$lokTag = $this->folTag->appendChild($this->xmlDoc->createElement("Camera"));
$lokTag->appendChild($this->xmlDoc->createElement("longitude", $this->LONG));
$lokTag->appendChild($this->xmlDoc->createElement("latitude", $this->LAT));
$lokTag->appendChild($this->xmlDoc->createElement("altitude", $this->ALT));
$lokTag->appendChild($this->xmlDoc->createElement("heading", $this->HEAD));
$lokTag->appendChild($this->xmlDoc->createElement("tilt", $this->TILT));
$lokTag->appendChild($this->xmlDoc->createElement("range", $this->RANGE));
}示例2: toLatLng
/**
* Convert this UTM reference to a latitude and longitude
*
* @return the converted latitude and longitude
*/
function toLatLng()
{
$wgs84 = new ReferenceEllipsoid(ReferenceEllipsoid::WGS84_MAJ, ReferenceEllipsoid::WGS84_MIN);
$UTM_F0 = 0.9996;
$a = $wgs84->maj;
$eSquared = $wgs84->ecc;
$ePrimeSquared = $eSquared / (1.0 - $eSquared);
$e1 = (1 - sqrt(1 - $eSquared)) / (1 + sqrt(1 - $eSquared));
$x = $this->easting - 500000.0;
$y = $this->northing;
$zoneNumber = $this->lngZone;
$zoneLetter = $this->latZone;
$longitudeOrigin = ($zoneNumber - 1.0) * 6.0 - 180.0 + 3.0;
// Correct y for southern hemisphere
if (ord($zoneLetter) - ord("N") < 0) {
$y -= 10000000.0;
}
$m = $y / $UTM_F0;
$mu = $m / ($a * (1.0 - $eSquared / 4.0 - 3.0 * $eSquared * $eSquared / 64.0 - 5.0 * pow($eSquared, 3.0) / 256.0));
$phi1Rad = $mu + (3.0 * $e1 / 2.0 - 27.0 * pow($e1, 3.0) / 32.0) * sin(2.0 * $mu) + (21.0 * $e1 * $e1 / 16.0 - 55.0 * pow($e1, 4.0) / 32.0) * sin(4.0 * $mu) + 151.0 * pow($e1, 3.0) / 96.0 * sin(6.0 * $mu);
$n = $a / sqrt(1.0 - $eSquared * sin($phi1Rad) * sin($phi1Rad));
$t = tan($phi1Rad) * tan($phi1Rad);
$c = $ePrimeSquared * cos($phi1Rad) * cos($phi1Rad);
$r = $a * (1.0 - $eSquared) / pow(1.0 - $eSquared * sin($phi1Rad) * sin($phi1Rad), 1.5);
$d = $x / ($n * $UTM_F0);
$latitude = ($phi1Rad - $n * tan($phi1Rad) / $r * ($d * $d / 2.0 - (5.0 + 3.0 * $t + 10.0 * $c - 4.0 * $c * $c - 9.0 * $ePrimeSquared) * pow($d, 4.0) / 24.0 + (61.0 + 90.0 * $t + 298.0 * $c + 45.0 * $t * $t - 252.0 * $ePrimeSquared - 3.0 * $c * $c) * pow($d, 6.0) / 720.0)) * (180.0 / pi());
$longitude = $longitudeOrigin + ($d - (1.0 + 2.0 * $t + $c) * pow($d, 3.0) / 6.0 + (5.0 - 2.0 * $c + 28.0 * $t - 3.0 * $c * $c + 8.0 * $ePrimeSquared + 24.0 * $t * $t) * pow($d, 5.0) / 120.0) / cos($phi1Rad) * (180.0 / pi());
return new LatLng($latitude, $longitude);
}示例3: metersToLatLon
static function metersToLatLon($mx, $my)
{
$lng = $mx / self::originShift() * 180.0;
$lat = $my / self::originShift() * 180.0;
$lat = 180 / pi() * (2 * atan(exp($lat * pi() / 180.0)) - pi() / 2.0);
return new GoogleMapPoint($lat, $lng);
}示例4: TrueSolarTime
function TrueSolarTime($Hours, $ET, $SITE, $TIME)
{
//Calculations
if ($TIME['LocalTime'] == 1) {
//True solar time, radian
for ($i = 0; $i < $TIME['Ndays']; $i++) {
for ($j = 0; $j < $TIME['Nsteps']; $j++) {
$w[$i][$j] = ($Hours[$i][$j] - 12) * 15 * pi() / 180;
}
}
} elseif ($TIME['LocalTime'] == 2) {
//Daily loop
for ($d = 0; $d < $TIME['Ndays']; $d++) {
//Daylight Saving Time, DST
if ($d < $TIME['DOCS'] || $d >= $TIME['DOCW']) {
$DST[$d] = $TIME['DSTW'][$d];
} else {
$DST[$d] = $TIME['DSTS'][$d];
}
//Hourly loop
for ($h = 0; $h < $TIME['Nsteps']; $h++) {
//True solar time, radian
$w[$d][$h] = ($Hours[$d][$h] - (12 + $DST[$d][$h])) * 15 * pi / 180 + ($SITE['Longitude'] - $SITE['StandardLongitude']) * pi / 180 + $ET[$d];
}
}
//end foreach
}
//end elseif
return $w;
}示例5: timeout
function timeout()
{
global $da, $background, $back_width, $back_height, $frame, $images, $frame_num;
$background->copy_area(0, 0, $back_width, $back_height, $frame, 0, 0);
$f = $frame_num % CYCLE_LEN / CYCLE_LEN;
$xmid = $back_width / 2.0;
$ymid = $back_height / 2.0;
$radius = min($xmid, $ymid) / 2.0;
for ($i = 0; $i < N_IMAGES; $i++) {
$ang = 2.0 * pi() * $i / N_IMAGES - $f * 2.0 * pi();
$iw = $images[$i]->get_width();
$ih = $images[$i]->get_height();
$r = $radius + $radius / 3.0 * sin($f * 2.0 * pi());
$xpos = floor($xmid + $r * cos($ang) - $iw / 2.0 + 0.5);
$ypos = floor($ymid + $r * sin($ang) - $ih / 2.0 + 0.5);
$k = $i & 1 ? sin($f * 2.0 * pi()) : cos($f * 2.0 * pi());
$k = 2.0 * $k * $k;
$k = max(0.25, $k);
$r1 = new GdkRectangle($xpos, $ypos, $iw * $k, $ih * $k);
$r2 = new GdkRectangle(0, 0, $back_width, $back_height);
$dest = $r1->intersect($r2);
$images[$i]->composite($frame, $dest->x, $dest->y, $dest->width, $dest->height, $xpos, $ypos, $k, $k, Gdk::INTERP_NEAREST, $i & 1 ? max(127, abs(255 * sin($f * 2.0 * pi()))) : max(127, abs(255 * cos($f * 2.0 * pi()))));
}
$da->queue_draw();
$frame_num++;
return true;
}示例6: approximate
public function approximate()
{
$correlation = $this->getCorrelation();
$step = $this->getStep();
$this->_tau = 0;
for ($i = 0; $i < count($correlation); $i++) {
if ($correlation[$i] < 0) {
$p1 = new Model_Coordinate($step * ($i - 1), $correlation[$i - 1]);
$p2 = new Model_Coordinate($step * $i, $correlation[$i]);
$k = ($p2->getY() - $p1->getY()) / ($p2->getX() - $p1->getX());
$b = $p2->getY() - $k * $p2->getX();
$this->_tau = -$b / $k;
break;
}
}
$this->_beta = pi() / (2 * $this->_tau);
$s1 = 0;
$s2 = 0;
for ($i = 0; $i * $step < $this->_tau; $i++) {
$tau = $i * $step;
$ro_tau = $correlation[$i];
$s1 += abs($tau * log($ro_tau / cos($this->_beta * $tau)));
$s2 += $tau * $tau;
}
if ($this->_tau < $step) {
$this->_alpha = 1;
} else {
$this->_alpha = $s1 / $s2;
}
}示例7: testGetTheVolumeOfSphere
public function testGetTheVolumeOfSphere()
{
$radius = 4;
$result = 4 / 3 * pi() * sqrt($radius) * $radius;
$volume_sphere = new Shape() / Sphere($radius);
$this->assertEquals($result, $volume_sphere);
}示例8: direction
function direction($u, $v, $good)
{
$stringNum = array("N" => 0, "NNE" => 2, "NE" => 4, "ENE" => 6, "E" => 8, "ESE" => 10, "SE" => 12, "SSE" => 14, "S" => 16, "SSO" => 18, "SO" => 20, "OSO" => 22, "O" => 24, "ONO" => 26, "NO" => 28, "NNO" => 30);
$dirString = array(0 => "N", 1 => "NNE", 2 => "NNE", 3 => "NE", 4 => "NE", 5 => "ENE", 6 => "ENE", 7 => "E", 8 => "E", 9 => "ESE", 10 => "ESE", 11 => "SE", 12 => "SE", 13 => "SSE", 14 => "SSE", 15 => "S", 16 => "S", 17 => "SSO", 18 => "SSO", 19 => "SO", 20 => "SO", 21 => "OSO", 22 => "OSO", 23 => "O", 24 => "O", 25 => "ONO", 26 => "ONO", 27 => "NO", 28 => "NO", 29 => "NNO", 30 => "NNO", 31 => "N", 32 => "N");
$dir = (atan2($u, $v) / pi() + 1) * 180;
$dirSecteur = round($dir / 11.25);
$goods = str_getcsv($good);
//var_dump($goods);
$col = "white";
foreach ($goods as $good) {
//echo $good . '?';
if ($good != '') {
$num = $stringNum[$good];
// echo 'ref='.$num.' et wind='.$dirSecteur . '! ';
//je n'arrive pas Ó bien formuler l'intervalle sur mes numÚros de secteur
if ($num + 3 >= $dirSecteur and $num - 3 <= $dirSecteur) {
$col = "lightgreen";
}
if ($num == 0) {
if ($dirSecteur == 31 or $dirSecteur == 30 or $dirSecteur == 29) {
$col = "lightgreen";
}
}
if ($num == 1) {
if ($dirSecteur == 31) {
$col = "lightgreen";
}
}
}
}
print "<td bgcolor='" . $col . "'>" . $dirString[$dirSecteur] . "</td>";
}示例9: getClubs
public static function getClubs($userLongitude, $userLatitude, $range = 10)
{
$searchRange = 180 / pi() * ($range / 6372.797);
$lngR = abs($searchRange / cos($userLatitude * pi() / 180.0));
$maxLat = $userLatitude + $searchRange;
$minLat = $userLatitude - $searchRange;
$maxLng = $userLongitude + $lngR;
$minLng = $userLongitude - $lngR;
$con = DBUtil::connectDB();
$sql = "SELECT * FROM club where ((latitude BETWEEN {$minLat} AND {$maxLat}) AND (longitude BETWEEN {$minLng} AND {$maxLng}))";
$result = mysql_query($sql, $con);
$clubs = [];
while ($row = mysql_fetch_array($result)) {
$r = [];
$r['id'] = $row['id'];
$r['name'] = $row['name'];
$r['longitude'] = $row['longitude'];
$r['latitude'] = $row['latitude'];
$r['images'] = json_decode($row['images']);
$r['address'] = $row['address'];
$r['meta'] = json_decode($row['meta']);
$clubs[] = $r;
}
mysql_close();
return $clubs;
}示例10: distance
public static function distance($lat1, $long1, $lat2, $long2)
{
//радиус Земли
$R = 6372795;
//перевод коордитат в радианы
$lat1 *= pi() / 180;
$lat2 *= pi() / 180;
$long1 *= pi() / 180;
$long2 *= pi() / 180;
//вычисление косинусов и синусов широт и разницы долгот
$cl1 = cos($lat1);
$cl2 = cos($lat2);
$sl1 = sin($lat1);
$sl2 = sin($lat2);
$delta = $long2 - $long1;
$cdelta = cos($delta);
$sdelta = sin($delta);
//вычисления длины большого круга
$y = sqrt(pow($cl2 * $sdelta, 2) + pow($cl1 * $sl2 - $sl1 * $cl2 * $cdelta, 2));
$x = $sl1 * $sl2 + $cl1 * $cl2 * $cdelta;
$ad = atan2($y, $x);
$dist = $ad * $R;
$dist = round($dist);
return $dist;
}示例11: distanceBetween
public function distanceBetween(Geopoint $pointA, Geopoint $pointB, $algorithm = 'flat', $unit = null) {
if (!$unit) $unit = $this->defaultUnit;
switch ($algorithm) {
case 'haversine':
$theta = ($pointA->longitude - $pointB->longitude);
$dist = sin(deg2rad($pointA->latitude)) * sin(deg2rad($pointB->latitude)) + cos(deg2rad($pointA->latitude)) * cos(deg2rad($pointB->latitude)) * cos(deg2rad($theta));
$dist = acos($dist);
$distance = rad2deg($dist);
break;
case 'flat':
default:
$distanceEW = ($pointB->longitude - $pointA->longitude) * cos($pointA->latitude);
$distanceNS = $pointB->latitude - $pointA->latitude;
$distance = sqrt( ($distanceEW * $distanceEW) + ($distanceNS * $distanceNS));
break;
}
$distance *= 2 * pi() * $this->earthRadius[$unit] / 360.0;
return $distance;
}示例12: distanceBetween
public static function distanceBetween(Geopoint $pointA, Geopoint $pointB, $algorithm, $units)
{
switch ($algorithm) {
case 'haversine':
$theta = $pointA->getLongitude() - $pointB->getLongitude();
$dist = sin(deg2rad($pointA->getLatitude())) * sin(deg2rad($pointB->getLatitude())) + cos(deg2rad($pointA->getLatitude())) * cos(deg2rad($pointB->getLatitude())) * cos(deg2rad($theta));
$dist = acos($dist);
$distance = rad2deg($dist);
break;
case 'flat':
default:
$distanceEW = ($pointB->getLongitude() - $pointA->getLongitude()) * cos($pointA->getLatitude());
$distanceNS = $pointB->getLatitude() - $pointA->getLatitude();
$distance = sqrt($distanceEW * $distanceEW + $distanceNS * $distanceNS);
break;
}
switch ($units) {
case self::GEO_UNIT_KM:
$radius = self::EARTH_RADIUS_KM;
break;
case self::GEO_UNIT_MILES:
$radius = self::EARTH_RADIUS_MILES;
break;
}
$distance *= 2 * pi() * $radius / 360.0;
return $distance;
}示例13: get_condition
private function get_condition()
{
if ($this->input['jd'] || $this->input['wd']) {
//gps坐标转百度坐标
$baidu_zuobiao = GpsToBaidu($this->input['jd'], $this->input['wd']);
$this->input['baidu_longitude'] = $baidu_zuobiao['x'];
$this->input['baidu_latitude'] = $baidu_zuobiao['y'];
}
$distance = $this->input['distance'];
if ($this->input['baidu_longitude'] && $this->input['baidu_latitude'] && $distance) {
$baidu_longitude = $this->input['baidu_longitude'];
$baidu_latitude = $this->input['baidu_latitude'];
$range = 180 / pi() * $distance / 6372.797;
//里面的 $distance 就代表搜索 $distance 之内，单位km
$lngR = $range / cos($baidu_latitude * pi() / 180);
//echo $range;exit()
$maxLat = $baidu_latitude + $range;
//最大纬度
$minLat = $baidu_latitude - $range;
//最小纬度
$maxLng = $baidu_longitude + $lngR;
//最大经度
$minLng = $baidu_longitude - $lngR;
//最小经度
$condition .= ' AND t1.baidu_longitude >=' . $minLng . ' AND t1.baidu_longitude <=' . $maxLng . ' AND t1.baidu_latitude >=' . $minLat . ' AND t1.baidu_latitude <= ' . $maxLat . ' AND t1.baidu_latitude != "" AND t1.baidu_longitude != ""';
}
return $condition;
}示例14: MetersToLatLon
public function MetersToLatLon($mx, $my)
{
$lon = $mx / $this->originShift * 180.0;
$lat = $my / $this->originShift * 180.0;
$lat = 180 / pi() * (2 * atan(exp($lat * pi() / 180.0)) - pi() / 2.0);
return array($lat, $lon);
}示例15: explodeTestData
protected function explodeTestData($locale, $currencyCode)
{
// valid values for all currencies
$validDomainValues = [(double) -10, (double) 0, (double) 10];
// invalid values for all currencies
$invalidDomainValues = [-1, 0, 1, null, false, true, "", "123", "foo", [], ['foo' => 'bar'], new \stdClass(), NAN, INF, -INF];
$tmpValid = $validDomainValues;
$tmpInvalid = $invalidDomainValues;
// Build fraction digits test data
$formatter = new \NumberFormatter($locale, \NumberFormatter::CURRENCY);
$formatter->setTextAttribute($formatter::CURRENCY_CODE, $currencyCode);
$fractionDigits = $formatter->getAttribute(\NumberFormatter::FRACTION_DIGITS);
$tmpValid[] = (double) (1 + pow(10, -$fractionDigits));
$tmpInvalid[] = (double) (1 + pow(10, -($fractionDigits + 1)));
$pi = pi();
$tmpValid[] = round($pi, $fractionDigits);
if ($fractionDigits > 2) {
$tmpValid[] = round($pi, $fractionDigits - 1);
$tmpValid[] = (double) (1 + pow(10, -($fractionDigits - 1)));
}
$tmpInvalid[] = round($pi, $fractionDigits + 1);
$return = [];
foreach ($tmpValid as $value) {
$return[] = [$value, true];
}
foreach ($tmpInvalid as $value) {
$return[] = [$value, false];
}
return $return;
}