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grid2lonlat.php
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grid2lonlat.php
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<?php
################################################################
#
# Find Grid Corners
#
# To debug print-only version, use URLs of the form http://www.capgrids.com/grid2lonlat.php?id=SEATTLE&mygrid=139&myquadrant=B&dev=1#
#
################################################################
error_reporting(0);
include_once("includes/gridFunctions.php");
global $mapType;
$onload="";
if (isset($_GET['id'])) {$sectional=$_GET['id'];} else {$sectional="SEATTLE";}
if (isset($_GET['mygrid'])) {$selectedGrid=$_GET['mygrid'];} else {$selectedGrid=findDefaultGridNumber($sectional);}
if (isset($_GET['myquadrant'])) {$selectedQuadrant=strtoupper($_GET['myquadrant']);} else {$selectedQuadrant="E";}
if (isset($_GET['myformat'])) {$selectedFormat=$_GET['myformat'];} else {$selectedFormat="dmm";}
if (isset($_GET['dev'])) {$displayPrintVersion=1;} else {$displayPrintVersion=0;} # Use for development & debugging. Reverses sense of print/screen CSS
if ((isset($_GET['dev'])) AND (isset($_GET['delay']))) {$delay = $_GET['delay'];} else {$delay = 0;} # Used with 'dev' flag to introduce delays for CLI printing of PDFs
# Recommended delay = 8500
if (isset($_GET['id'])) {
$onload="onload=\"javascript:onloadHandler();\"";
}
$abbrev=$coordinates[$sectional]['Abbrev'];
?>
<!DOCTYPE html>
<html>
<head>
<title><?php echo "$abbrev $selectedGrid"; ?> </title>
<meta name="robots" content="noindex, nofollow">
<style type="text/css">
<!--
.coord {
font-family: Arial, Helvetica;
font-size: 10pt;
}
<?php
if ($displayPrintVersion) {echo "@media print {\n"; } # Used for debug/dev
else {echo "@media screen {\n"; } # Used for production
?>
div.printonly {
display: block;
visibility: hidden;
margin:0pt 18pt 0pt 18pt;
padding:0;
}
div.screenonly {
margin:0;
padding:0;
display: block;
visibility:visible;
}
}
<?php
if ($displayPrintVersion) {echo "@media screen {\n"; } # Used for debug/dev
else {echo "@media print {\n"; } # Used for production
?>
div.printonly {
margin:0;
padding:0;
display: block;
visibility: visible;
}
div.screenonly {
display: none;
}
}
#topmap, #bottommap {
position: absolute;
top: 0px;
left: 0px;
opacity: 0.5;
}
@media print {
body {
margin: 0cm;
}
}
@page {
margin: 0cm;
}
-->
</style>
<script language="JavaScript" type="text/javascript">
function reloadHandler() {
var sectionalCode = document.findCorners.sectionalCorners.options[document.findCorners.sectionalCorners.selectedIndex].value;
var gridCode = document.findCorners.selectGrid.options[document.findCorners.selectGrid.selectedIndex].value;
// var gridCode = document.findCorners.selectGrid.value;
var quadCode = document.findCorners.selectQuadrant.options[document.findCorners.selectQuadrant.selectedIndex].value;
var formatCode = document.findCorners.selectFormat.options[document.findCorners.selectFormat.selectedIndex].value;
window.location='grid2lonlat.php?id=' + sectionalCode + '&mygrid=' + gridCode + '&myquadrant=' + quadCode + '&myformat=' + formatCode;
}
function onloadHandler() {
<?php echo "parent.setGridWindow('" . $sectional . "', '" . $selectedGrid . "', '" . $selectedQuadrant . "');"; ?>
}
function pageReady(){
<?php
echo "setTimeout(function(){window.status=\"ready\"},$delay);\n";
?>
var op1 = parent.frames['resources'].document.getElementById('top').style.opacity;
var op2 = 1 - op1;
document.getElementById('topmap').style.opacity = op1;
document.getElementById('bottommap').style.opacity = op2;
}
function resizeIframe(obj) {
obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
}
</script>
</head>
<?php
if ($displayPrintVersion){
echo "<body onload=\"javascript:pageReady();\">\n";
} else {
echo "<body $onload>\n";
}
// Screen Display Below //
echo "<div class=\"screenonly\">
<form name=\"findCorners\">
<table width=\"400\" border=\"0\" align=\"center\" style=\"margin-top:0;\"><tr valign=\"top\"><td>
<select name=\"sectionalCorners\" onChange=\"javascript:document.findCorners.selectGrid.value=100;javascript:reloadHandler();\" style=\"border-color:black;border-width:1px;border-color:#303030;\" TITLE=\" Select Sectional \">\n";
drawSectionalOptions($sectional);
echo "</select>
</td><td>
<select name=\"selectGrid\" onChange=\"javascript:reloadHandler();\" style=\"border-color:black;border-width:1px;border-color:#303030;\" TITLE=\" Select Grid # \">\n";
drawGridOptions($sectional, $selectedGrid);
echo "</select></td><td>
<select name=\"selectQuadrant\" onChange=\"javascript:reloadHandler();\" style=\"border-color:black;border-width:1px;border-color:#303030;\" TITLE=\" Grid Quadrant \">\n";
$quadAry = array("E","A","B","C","D");
foreach ($quadAry as $item){
$selected="";
if ($item == $selectedQuadrant) $selected=" SELECTED ";
if ($item == "E") {
echo " <option value=\"E\" $selected>Entire Grid</option>\n";
} else {
echo " <option value=\"$item\" $selected>$item</option>\n";
}
}
echo "</select></td><td>
<select name=\"selectFormat\" onChange=\"javascript:reloadHandler();\" style=\"border-color:black;border-width:1px;border-color:#303030;\" TITLE=\" Display Format \" >\n";
echo " <option value=\"dmm\" ";
if ($selectedFormat == "dmm") echo "SELECTED ";
echo ">DD mm.mmm</option>";
echo " <option value=\"dms\" ";
if ($selectedFormat == "dms") echo "SELECTED ";
echo ">DD mm ss</option>";
echo "</select></td>
</tr>
</table></form>\n";
$displayQuadrant= " - " . $selectedQuadrant;
if ($selectedQuadrant == "E") $displayQuadrant="";
$cellWidth=100;
$result = grid2lonlat($sectional, $selectedGrid, $selectedQuadrant, $selectedFormat);
$resultRaw = grid2lonlat($sectional, $selectedGrid, $selectedQuadrant, "raw");
$SurroundingGrids = GetSurroundingGridIDs($sectional, $selectedGrid, $selectedQuadrant, $selectedFormat);
$avgLon=($resultRaw['NW']['lon'] + $result['NE']['lon'])/2;
$avgLat=($resultRaw['NW']['lat'] + $result['SW']['lat'])/2;
$variation = $variationSigned = magVariation($avgLat, $avgLon);
$varDir="W";
if ($variation < 0) {
$varDir="E";
$variation=abs($variation);
}
$northSteer = 360 + $variationSigned;
if ($northSteer >= 360) $northSteer -= 360;
$steer = array("North" => sprintf("%03d", floor($northSteer + 0.5)),
"East" => sprintf("%03d", floor(90 + $variationSigned + 0.5)),
"South" => floor(180 + $variationSigned + 0.5),
"West" => floor(270 + $variationSigned + 0.5)
);
$CTwilight = GetCivilTwilight($avgLat, $avgLon);
echo "<br><table border=\"1\" cellspacing=\"0\" cellpadding=\"10\" width=\"375\" align=\"center\" style=\"border-width:10px;border-style:solid;border-color:#c0c0c0;\"><tr><td><table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"100%\" align=\"center\">
<tr><td width=\"$cellWidth\" valign=\"bottom\" align=\"right\" class=\"coord\">" . $result['NW']['lat'] . "<br>" . $result['NW']['lon'] . "</td><td width=\"($cellWidth + 75)\"> </td><td valign=\"bottom\" align=\"left\" width=\"$cellWidth\" class=\"coord\">" . $result['NE']['lat'] . "<br>" . $result['NE']['lon'] . "</td></tr>
<tr><td> </td><td align=\"center\" valign=\"middle\" style=\"border-width:2px;border-style:solid;width:" . $cellWidth . "px;height:80px;background-color:#f0f0f0;\">" . $coordinates[$sectional]['Abbrev'] . "<br>$selectedGrid $displayQuadrant<br><img src=\"/images/spacer.gif\" style=\"width:" . $cellWidth . "px;height:1px;\"></td><td width=\"$cellWidth\"> </td></tr>
<tr><td valign=\"top\" align=\"right\" class=\"coord\">" . $result['SW']['lat'] . "<br>" . $result['SW']['lon'] . "</td><td align=\"center\" valign=\"top\" class=\"coord\"><nobr><small><i>Mag Variation:</i></small></nobr><br><nobr><i>$variation° $varDir</i></nobr></td><td valign=\"top\" align=\"left\" class=\"coord\">" . $result['SE']['lat'] . "<br>" . $result['SE']['lon'] . "</td></tr>
</table></td></tr></table></div>\n";
// End of Screen Display
// Beginning of Print Display
?>
<div class="printonly">
<table border="0" cellspacing="0" cellpadding="5" width="650" align="center">
<tr valign="bottom"><td valign="middle" align="center" rowspan="4">
←<br><?php echo $coordinates[$SurroundingGrids['West']['sectional']]['Abbrev'] . " <nobr>" . $SurroundingGrids['West']['grid'] . $SurroundingGrids['West']['quadrant']; ?></nobr> <br>←</td><td align="center" colspan="3"><b><?php echo $coordinates[$sectional]['Abbrev'] . " " . $selectedGrid . $displayQuadrant; ?></b></td>
<td valign="middle" align="center" rowspan="4">
→<br><?php echo $coordinates[$SurroundingGrids['East']['sectional']]['Abbrev'] . " <nobr>" . $SurroundingGrids['East']['grid'] . $SurroundingGrids['East']['quadrant']; ?></nobr> <br>→</td></tr>
<tr valign="bottom"><td align="left" class="coord" width="162"><?php echo $result['NW']['lat'] . "<br>" . $result['NW']['lon']; ?></td><td align="center" width="50%">↑
<?php echo $coordinates[$SurroundingGrids['North']['sectional']]['Abbrev'] . " " . $SurroundingGrids['North']['grid'] . $SurroundingGrids['North']['quadrant']; ?> ↑</td><td align="right" class="coord" width="162"><?php echo $result['NE']['lat'] . "<br>" . $result['NE']['lon']; ?></td></tr>
<tr valign="top"><td align="center" colspan="3"><div style="position: relative;"><img src="images/spacer.gif" width="645" height="690"><?php
$kmlURL = "https://" . $_SERVER['SERVER_NAME'] . preg_replace("/(.*\/).*/", "$1", $_SERVER['PHP_SELF']) . "kml.php?id=" . $sectional . "&mygrid=" . $selectedGrid . "&myquadrant=" . $selectedQuadrant . "&embed=1";
$kmlURLencoded = rawurlencode($kmlURL);
$zoom=12;
if ($selectedQuadrant=="E") $zoom=11;
//$TerrainMapiframeBase= "//maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=" . $kmlURLencoded . "%26embed%3D1&ie=UTF8&t=" . $mapType['terrain'] . "&output=embed&";
//$TerrainMapiframeSrc = $TerrainMapiframeBase . "&z=" . $zoom;
$TerrainMapiframeSrc = "https://" . $_SERVER['SERVER_NAME'] . preg_replace("/(.*\/).*/", "$1", $_SERVER['PHP_SELF']) . "kmlLoader.php?id=" . $sectional . "&mygrid=" . $selectedGrid . "&myquadrant=" . $selectedQuadrant . "&MapTypeId=TERRAIN&embed=1";
$SatMapiframeBase= "https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=" . $kmlURLencoded . "%26embed%3D1&ie=UTF8&t=" . $mapType['satellite'] . "&output=embed&";
$SatMapiframeSrc = $SatMapiframeBase . "&z=" . $zoom;
$SatMapiframeSrc = "https://" . $_SERVER['SERVER_NAME'] . preg_replace("/(.*\/).*/", "$1", $_SERVER['PHP_SELF']) . "kmlLoader.php?id=" . $sectional . "&mygrid=" . $selectedGrid . "&myquadrant=" . $selectedQuadrant . "&MapTypeId=HYBRID&embed=1";
#$iframeSrc = "//maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=" . $kmlURLencoded . "&ie=UTF8&t=p&z=" . $zoom . "&output=embed";
$iframeHref = "https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=" . $kmlURLencoded . "&ie=UTF8&t=p&z=10";
echo "<iframe id=\"topmap\" width=\"645\" height=\"680\" style=\"opacity:0.5;\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" src=\"" . $TerrainMapiframeSrc . "\"></iframe>";
echo "<iframe id=\"bottommap\" width=\"645\" height=\"680\" style=\"opacity:0.5;\" frameborder=\"0\" scrolling=\"no\" marginheight=\"0\" marginwidth=\"0\" src=\"" . $SatMapiframeSrc . "\"></iframe>";
$nearestURL = "https://" . $_SERVER['SERVER_NAME'] . preg_replace("/(.*\/).*/", "$1", $_SERVER['PHP_SELF']) . "nearestAirports.php?id=" . $sectional . "&mygrid=" . $selectedGrid . "&myquadrant=" . $selectedQuadrant . "&embed=1";
$nearestURLencoded = rawurlencode($nearestURL);
?>
</div>
</td></tr>
<tr valign="top"><td align="left" class="coord" width="162"><?php echo $result['SW']['lat'] . "<br>" . $result['SW']['lon']; ?></td>
<td align="center">↓ <?php echo $coordinates[$SurroundingGrids['South']['sectional']]['Abbrev'] . " " . $SurroundingGrids['South']['grid'] . $SurroundingGrids['South']['quadrant']; ?> ↓</td>
<td align="right" class="coord" width="162"><?php echo $result['SE']['lat'] . "<br>" . $result['SE']['lon']; ?></td></tr>
<tr><td rowspan="2" style="background-color:#fffff;"> </td><td colspan="3" style="vertical-align:top;"><hr>
<div style="font-size:9.0pt;font-family:arial;margin-left:0;margin-top:0;display:inline-table;">
<table style="width:224px;margin-left:0;margin-top:2em;display:inline-table;border-style:solid;position:relative;" border="1" cellpadding="4" cellspacing="0">
<caption style="caption-side:bottom;margin-top:0.4em;"><i>Avg Mag Variation: <?php echo "$variation° $varDir"; ?></i></caption>
<tr><td><b>For:</b></td><td>North</td><td>East</td><td>South</td><td>West</td></tr>
<tr><td><b>Steer:</b></td><td align="center"><?php echo $steer['North']; ?></td><td align="center"><?php echo $steer['East']; ?></td><td align="center"><?php echo $steer['South']; ?></td><td align="center"><?php echo $steer['West']; ?></td></tr>
</table>
<table border="0" style="margin-top:2em;width:224px;" cellspacing="0" cellpadding="2"><tr><td><p style="padding:0;margin:0;">Start of AM Civil Twilight:</p></td><td><?php echo "<p style=\"padding:0;margin:0;white-space:nowrap\">" . $CTwilight['sunrise_Local'] . " " . $CTwilight['timeZoneAbbrev'];?></p></td></tr>
<tr><td><p style="padding:0;margin:0;">End of PM Civil Twilight:</p></td><td><?php echo "<p style=\"white-space:nowrap;padding:0;margin:0;\">" . $CTwilight['sunset_Local'] . " " . $CTwilight['timeZoneAbbrev'];?></p></td></tr></table>
</div>
<table style="float:right;display:inline-table;width:400px;margin:0;" border="0"><tr><td style="width:100%;"><iframe style="width:100%;" id="nearest" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" onload="resizeIframe(this)" src="<?php echo $nearestURL;?>"</iframe></td></tr></table>
<hr>
</td><td rowspan="2"> </td></tr>
</td></tr>
</table>
</div>
<?php
// End of Print Display
?>
</body>
</html>
<?php
# ===================================================================================================
# Find the starting grid number (not always 1)
#
function findDefaultGridNumber($sectional) {
global $coordinates;
$startingGrid=1;
if (isset($coordinates[$sectional]['nullgrid'])) {
$idx = 0;
do {$idx++;}
while (in_array($idx, $coordinates[$sectional]['nullgrid']));
$startingGrid = $idx;
}
return ($startingGrid);
}
# ===================================================================================================