|
1
|
|
|
<?php |
|
2
|
|
|
class Weather { |
|
3
|
|
|
|
|
4
|
|
|
/* function buildcloud($coord = array(),$c) { |
|
5
|
|
|
$minlong = filter_var($coord[0],FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION); |
|
6
|
|
|
$minlat = filter_var($coord[1],FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION); |
|
7
|
|
|
$maxlong = filter_var($coord[2],FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION); |
|
8
|
|
|
$maxlat = filter_var($coord[3],FILTER_SANITIZE_NUMBER_FLOAT,FILTER_FLAG_ALLOW_FRACTION); |
|
9
|
|
|
*/ |
|
10
|
|
|
function buildcloud($lat,$long,$height,$c) { |
|
|
|
|
|
|
11
|
|
|
|
|
12
|
|
|
$w = 1000.0; |
|
13
|
|
|
$h = 1000.0; |
|
14
|
|
|
$hdist = 1; |
|
15
|
|
|
$vdist = 1; |
|
16
|
|
|
|
|
17
|
|
|
$c = 5; |
|
18
|
|
|
$count = ($c + (mt_rand()-0.5)-$c); |
|
19
|
|
|
for ($j = 0;$j < $count; $j++) { |
|
20
|
|
|
$x = 0.0; |
|
21
|
|
|
$y = 0.0; |
|
22
|
|
|
$z = 0.0; |
|
23
|
|
|
for ($k = 0; $k < $hdist; $k++) { |
|
24
|
|
|
$x += (mt_rand()/$hdist); |
|
25
|
|
|
$y += (mt_rand()/$hdist); |
|
26
|
|
|
} |
|
27
|
|
|
for ($k = 0; $k < $vdist; $k++) { |
|
28
|
|
|
$z += (mt_rand()/$vdist); |
|
29
|
|
|
} |
|
30
|
|
|
$x = $w * ($x - 0.5) + $lat; // N/S |
|
31
|
|
|
$y = $w * ($y - 0.5) + $long; // E/W |
|
32
|
|
|
$z = $h * $z + $height; // Up/Down. pos[2] is the cloudbase |
|
33
|
|
|
// addcloud |
|
34
|
|
|
echo 'x: '.$x.'/y: '.$y.'/z: '.$z."\n"; |
|
35
|
|
|
} |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
function buildcloudlayer($metar) { |
|
|
|
|
|
|
39
|
|
|
//print_r($metar); |
|
40
|
|
|
$result = array(); |
|
41
|
|
|
foreach($metar['cloud'] as $key => $data) { |
|
42
|
|
|
$alt_m = $metar['cloud'][$key]['level']; |
|
43
|
|
|
$alt_ft = $alt_m*3.28084; |
|
44
|
|
|
$pressure = $metar['QNH']; |
|
45
|
|
|
$cumulus_base = 122.0 * ($metar['temperature'] - $metar['dew']); |
|
46
|
|
|
$stratus_base = 100.0 * (100.0 * $metar['rh'])*0.3048; |
|
47
|
|
|
$coverage_norm = 0.0; |
|
48
|
|
|
if ($metar['cloud'][$key]['type'] == 'Few') { |
|
49
|
|
|
$coverage_norm = 2.0/8.0; |
|
50
|
|
|
} elseif ($metar['cloud'][$key]['type'] == 'Scattered') { |
|
51
|
|
|
$coverage_norm = 4.0/8.0; |
|
52
|
|
|
} elseif ($metar['cloud'][$key]['type'] == 'Broken') { |
|
53
|
|
|
$coverage_norm = 6.0/8.0; |
|
54
|
|
|
} elseif ($metar['cloud'][$key]['type'] == 'Overcast/Full cloud coverage') { |
|
55
|
|
|
$coverage_norm = 8.0/8.0; |
|
56
|
|
|
} |
|
57
|
|
|
$layer_type = 'nn'; |
|
|
|
|
|
|
58
|
|
|
if ($metar['cloud'][$key]['significant'] == 'cirrus') { |
|
59
|
|
|
$layer_type = 'ci'; |
|
60
|
|
|
} elseif ($alt_ft > 16500) { |
|
61
|
|
|
$layer_type = 'ci'; |
|
62
|
|
|
} elseif ($alt_ft > 6500) { |
|
63
|
|
|
$layer_type = 'ac'; |
|
64
|
|
|
if ($pressure < 1005.0 && $coverage_norm >= 0.5) { |
|
65
|
|
|
$layer_type = 'ns'; |
|
66
|
|
|
} |
|
67
|
|
|
} else { |
|
68
|
|
|
if ($cumulus_base * 0.80 < $alt_m && $cumulus_base * 1.20 > $alt_m) { |
|
69
|
|
|
$layer_type = 'cu'; |
|
70
|
|
|
} elseif ($stratus_base * 0.80 < $alt_m && $stratus_base * 1.40 > $alt_m) { |
|
71
|
|
|
$layer_type = 'st'; |
|
72
|
|
|
} else { |
|
73
|
|
|
if ($alt_ft < 2000) { |
|
74
|
|
|
$layer_type = 'st'; |
|
75
|
|
|
} elseif ($alt_ft < 4500) { |
|
76
|
|
|
$layer_type = 'cu'; |
|
77
|
|
|
} else { |
|
78
|
|
|
$layer_type = 'sc'; |
|
79
|
|
|
} |
|
80
|
|
|
} |
|
81
|
|
|
} |
|
82
|
|
|
//echo 'coverage norm : '.$coverage_norm.' - layer_type: '.$layer_type."\n"; |
|
83
|
|
|
$result[] = array('cov' => $coverage_norm, 'type' => $layer_type,'alt' => $alt_m,'rh' => $metar['rh']); |
|
84
|
|
|
} |
|
85
|
|
|
if (count($result) < 2 && $metar['rh'] > 60) { |
|
86
|
|
|
$result[] = array('cov' => 0.75, 'type' => 'cu','alt' => 4000,'rh' => $metar['rh']); |
|
87
|
|
|
} |
|
88
|
|
|
return $result; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
function generateRandomPoint ($latitude,$longitude, $radius) { |
|
|
|
|
|
|
92
|
|
|
$x0 = $longitude; |
|
93
|
|
|
$y0 = $latitude; |
|
94
|
|
|
|
|
95
|
|
|
// Convert Radius from meters to degrees. |
|
96
|
|
|
$rd = $radius / 111300; |
|
97
|
|
|
$u = (float)rand()/(float)getrandmax(); |
|
98
|
|
|
$v = (float)rand()/(float)getrandmax(); |
|
99
|
|
|
$w = $rd * sqrt($u); |
|
100
|
|
|
$t = 2 * pi() * $v; |
|
101
|
|
|
$x = $w * cos($t); |
|
102
|
|
|
$y = $w * sin($t); |
|
103
|
|
|
$xp = $x / cos($y0); |
|
104
|
|
|
return array('latitude' => $y + $y0,'longitude' => $xp + $x0); |
|
105
|
|
|
} |
|
106
|
|
|
} |
|
107
|
|
|
/* |
|
108
|
|
|
require_once('class.METAR.php'); |
|
109
|
|
|
$METAR = new METAR(); |
|
110
|
|
|
*/ |
|
111
|
|
|
/* |
|
112
|
|
|
$themetar = $METAR->getMETAR('LFLL'); |
|
113
|
|
|
print_r($themetar); |
|
114
|
|
|
$result = $METAR->parse($themetar[0]['metar']); |
|
115
|
|
|
*/ |
|
116
|
|
|
/* |
|
117
|
|
|
$result = $METAR->parse('LFLL 081330Z 01006KT 340V050 9999 FEW020 BKN080 07/01 Q1018 NOSIG'); |
|
118
|
|
|
print_r($result); |
|
119
|
|
|
$Weather = new Weather(); |
|
120
|
|
|
//print_r($Weather->buildcloudlayer($result)); |
|
121
|
|
|
//print_r($Weather->buildcloud('46.3870','5.2941','2000','0.25')); |
|
122
|
|
|
print_r($Weather->generateRandomPoint('46.3870','5.2941','2000')); |
|
123
|
|
|
*/ |
|
124
|
|
|
?> |
Ysurac /
FlightAirMap
Loading history...
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.