[php]
/*
Plugin Name: Distance
Plugin URI: http://bokeconsulting.com/programming/plugins/distance/
Description: Calculates distance between two map coordinates.
Version: 0.1
Author: Bruce Duggan
Author URI: http://bokeconsulting.com
Copyright: Bruce Duggan 2014
Acknowledgement:
The code used in this plugin is based on Martin Stoeckli's code
found at http://stackoverflow.com/users/575765/martinstoeckli,
who in turn based his code on the Vincenty formula.
License: GPL
This program is free software: you can redistribute it and/or modify
it under the terms of the latest version of the GNU General Public License
as published by the Free Software Foundation. It is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
add_shortcode('distance','distance_func');
function distance_func($atts){
extract( shortcode_atts(array(
'vals' => '0',
), $atts ) );
$coordinates = explode(',', $vals);
$latitudeFrom = $coordinates[0];
$latitudeTo = $coordinates[1];
$longitudeFrom = $coordinates[2];
$longitudeTo = $coordinates[3];
$earthRadius = 6371;
$latFrom = deg2rad($latitudeFrom);
$lonFrom = deg2rad($longitudeFrom);
$latTo = deg2rad($latitudeTo);
$lonTo = deg2rad($longitudeTo);
$lonDelta = $lonTo - $lonFrom;
$a = pow(cos($latTo) * sin($lonDelta), 2) + pow(cos($latFrom) * sin($latTo) - sin($latFrom) * cos($latTo) * cos($lonDelta), 2);
$b = sin($latFrom) * sin($latTo) + cos($latFrom) * cos($latTo) * cos($lonDelta);
$angle = atan2(sqrt($a), $b);
$distance = $angle * $earthRadius;
$rounded = round($distance,-1);
$roundedMore = round($distance,-2);
$roundedMost = round($distance,-3);
$roundedLess = round($distance);
if ( is_user_logged_in() ) {
if ($distance > 1900) {
return number_format($roundedMost);
} elseif ($distance > 190) {
return number_format($roundedMore);
} elseif ($distance > 19) {
return number_format($rounded);
} else {
return number_format($roundedLess);
}
}
}
/*End Of File*/
[/php]
[text-blocks id="table-section-line"]
|
product |
amount |
|
form |
location |
distance |
price |
buy |
| ▲ |
wheat straw pellets for fuel |
10,000 |
tonnes |
pellets |
Lithuania |
[distance vals="55.24076,,22.29928,"] |
Euro€84 |
/ tonne |
 |
|
| Details |
|
source material: |
wheat straw |
|
|
|
primary uses: |
fuel for heat, fuel for electricity generation |
|
secondary uses: |
|
|
|
|
not suitable for: |
|
|
|
|
Does seller deliver? |
yes |
|
Is delivery included in price? |
depends |
|
|
|
Augerable? |
perhaps |
|
|
|
Storable? |
yes - short-term OK |
|
|
|
calorific value: |
min: 3,851 Kcal/kg max: 4,171 Kcal/kg |
|
|
|
moisture content: |
avg: 5% |
|
|
|
ash residue: |
max: 4.5% |
|
|
|
note to potential buyer: |
100% pure wheat straw - Renewable energy source. Heat produced: 16.1 MJ/kg - Sulphur content 0.07% - Easy to handle, transport and store. - Volume discounts. |
|
|
[text-blocks id="table-section-line"]
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