Mam taki kod
<?php
class pointLocation {
var $pointOnVertex = true; // Check if the point sits exactly on one of the vertices?
function pointLocation() {
}
function pointInPolygon($point, $polygon, $pointOnVertex = true) {
$this->pointOnVertex = $pointOnVertex;
// Transform string coordinates into arrays with x and y values
$point = $this->pointStringToCoordinates($point);
foreach ($polygon as $vertex) {
$vertices[] = $this->pointStringToCoordinates($vertex);
}
// Check if the point sits exactly on a vertex
if ($this->pointOnVertex == true and $this->pointOnVertex($point, $vertices) == true) {
return "vertex";
}
// Check if the point is inside the polygon or on the boundary
$intersections = 0;
$vertices_count = count($vertices);
for ($i=1; $i < $vertices_count; $i++) {
$vertex1 = $vertices[$i-1];
$vertex2 = $vertices[$i];
if ($vertex1['y'] == $vertex2['y'] and
$vertex1['y'] == $point['y'] and
$point['x'] > min($vertex1['x'], $vertex2['x']) and
$point['x'] < max($vertex1['x'], $vertex2['x'])) { // Check if point is on an horizontal polygon boundary return "boundary";
}
if ($point['y'] > min($vertex1['y'], $vertex2['y']) and
$point['y'] <= max($vertex1['y'], $vertex2['y']) and
$point['x'] <= max($vertex1['x'], $vertex2['x']) and
$vertex1['y'] != $vertex2['y']) { $xinters = ($point['y'] - $vertex1['y']) * ($vertex2['x'] - $vertex1['x']) / ($vertex2['y'] - $vertex1['y']) + $vertex1['x'];
if ($xinters == $point['x']) { // Check if point is on the polygon boundary (other than horizontal)
return "boundary";
}
if ($vertex1['x'] == $vertex2['x'] || $point['x'] <= $xinters) {
$intersections++;
}
}
}
// If the number of edges we passed through is odd, then it's in the polygon.
if ($intersections % 2 != 0) {
return "w regionie";
} else {
return "poza";
}
}
function pointOnVertex($point, $vertices) {
foreach($vertices as $vertex) {
if ($point == $vertex) {
return true;
}
}
}
function pointStringToCoordinates($pointString) {
$coordinates = explode(" ", $pointString); return array("x" => $coordinates[0], "y" => $coordinates[1
]); }
}
include('../db.php');
$result = $mysqli->query("SELECT time, lat, lon FROM mybo_strikes_wojewodztwo WHERE `time` LIKE '%2019-09%' AND `lat` BETWEEN 53.323000 AND 53.537000 AND `lon` BETWEEN 14.445000 AND 14.802000");
while ( $row = mysqli_fetch_array($result) ) {
echo "".$row['lon']." ".$row['lat'].", "; }
$result = $mysqli->query("SELECT * FROM powiaty WHERE `powiat` LIKE 'choszczeński'");
while ( $row = mysqli_fetch_array($result) ) {
//echo "".$row['koordynaty'].", ";
$powiat = $row['koordynaty'];
}
$pointLocation = new pointLocation();
//$points = array("50 70","70 40","-20 30","100 10","-10 -10","40 -20","210 -20");
$points = array("15.430256, 53.156151", "14.688979 53.489182", "14.598826 53.462356", "14.614701 53.488319", "14.600575 53.487518", "15.600575 53.487518"); $polygon = array($powiat); foreach($points as $key => $point) {
echo "point " . ($key+1) . " ($point): " . $pointLocation->pointInPolygon($point, $polygon) . "<br>"; }
?>
W tym miejscu
$points = array("15.430256, 53.156151", "14.688979 53.489182", "14.598826 53.462356", "14.614701 53.488319", "14.600575 53.487518", "15.600575 53.487518");
są przykładowe dane
a w tym $polygon = array($powiat); powinny być dane z bazy danych ale nie ma.
Jak można dodać zmienną $powiat która jest pobierana z bd mysql do tablicy array.
W bazie danych pod koordynaty mam takie wartości "15.301023 52.952381", "15.306165 52.965328", "15.307717 52.972298", "15.307131 52.982159", "15.301071 52.991863"