/usr/share/phpmyadmin/libraries/classes/Gis
Edit: /usr/share/phpmyadmin/libraries/classes/Gis/GisGeometry.php (13228B)
$min_max['maxX']) {
$min_max['maxX'] = $x;
}
if (! isset($min_max['minX']) || $x < $min_max['minX']) {
$min_max['minX'] = $x;
}
$y = (float) $cordinates[1];
if (! isset($min_max['maxY']) || $y > $min_max['maxY']) {
$min_max['maxY'] = $y;
}
if (isset($min_max['minY']) && $y >= $min_max['minY']) {
continue;
}
$min_max['minY'] = $y;
}
return $min_max;
}
/**
* Generates parameters for the GIS data editor from the value of the GIS column.
* This method performs common work.
* More specific work is performed by each of the geom classes.
*
* @param string $value value of the GIS column
*
* @return array parameters for the GIS editor from the value of the GIS column
*
* @access protected
*/
public function generateParams($value)
{
$geom_types = '(POINT|MULTIPOINT|LINESTRING|MULTILINESTRING'
. '|POLYGON|MULTIPOLYGON|GEOMETRYCOLLECTION)';
$srid = 0;
$wkt = '';
if (preg_match("/^'" . $geom_types . "\(.*\)',[0-9]*$/i", $value)) {
$last_comma = mb_strripos($value, ',');
$srid = trim(mb_substr($value, $last_comma + 1));
$wkt = trim(mb_substr($value, 1, $last_comma - 2));
} elseif (preg_match('/^' . $geom_types . '\(.*\)$/i', $value)) {
$wkt = $value;
}
return [
'srid' => $srid,
'wkt' => $wkt,
];
}
/**
* Extracts points, scales and returns them as an array.
*
* @param string $point_set string of comma separated points
* @param array|null $scale_data data related to scaling
* @param bool $linear if true, as a 1D array, else as a 2D array
*
* @return array scaled points
*
* @access protected
*/
protected function extractPoints($point_set, $scale_data, $linear = false): array
{
$points_arr = [];
// Separate each point
$points = explode(',', $point_set);
foreach ($points as $point) {
$point = str_replace(['(', ')'], '', $point);
// Extract coordinates of the point
$coordinates = explode(' ', $point);
if (isset($coordinates[0], $coordinates[1]) && trim($coordinates[0]) != '' && trim($coordinates[1]) != '') {
if ($scale_data != null) {
$x = ($coordinates[0] - $scale_data['x']) * $scale_data['scale'];
$y = $scale_data['height']
- ($coordinates[1] - $scale_data['y']) * $scale_data['scale'];
} else {
$x = floatval(trim($coordinates[0]));
$y = floatval(trim($coordinates[1]));
}
} else {
$x = 0;
$y = 0;
}
if (! $linear) {
$points_arr[] = [
$x,
$y,
];
} else {
$points_arr[] = $x;
$points_arr[] = $y;
}
}
return $points_arr;
}
/**
* Generates JavaScript for adding an array of polygons to OpenLayers.
*
* @param array $polygons x and y coordinates for each polygon
* @param string $srid spatial reference id
*
* @return string JavaScript for adding an array of polygons to OpenLayers
*
* @access protected
*/
protected function getPolygonArrayForOpenLayers(array $polygons, $srid)
{
$ol_array = 'var polygonArray = [];';
foreach ($polygons as $polygon) {
$rings = explode('),(', $polygon);
$ol_array .= $this->getPolygonForOpenLayers($rings, $srid);
$ol_array .= 'polygonArray.push(polygon);';
}
return $ol_array;
}
/**
* Generates JavaScript for adding points for OpenLayers polygon.
*
* @param array $polygon x and y coordinates for each line
* @param string $srid spatial reference id
*
* @return string JavaScript for adding points for OpenLayers polygon
*
* @access protected
*/
protected function getPolygonForOpenLayers(array $polygon, $srid)
{
return $this->getLineArrayForOpenLayers($polygon, $srid, false)
. 'var polygon = new ol.geom.Polygon(arr);';
}
/**
* Generates JavaScript for adding an array of LineString
* or LineRing to OpenLayers.
*
* @param array $lines x and y coordinates for each line
* @param string $srid spatial reference id
* @param bool $is_line_string whether it's an array of LineString
*
* @return string JavaScript for adding an array of LineString
* or LineRing to OpenLayers
*
* @access protected
*/
protected function getLineArrayForOpenLayers(
array $lines,
$srid,
$is_line_string = true
) {
$ol_array = 'var arr = [];';
foreach ($lines as $line) {
$ol_array .= 'var lineArr = [];';
$points_arr = $this->extractPoints($line, null);
$ol_array .= 'var line = ' . $this->getLineForOpenLayers(
$points_arr,
$srid,
$is_line_string
) . ';';
$ol_array .= 'var coord = line.getCoordinates();';
$ol_array .= 'for (var i = 0; i < coord.length; i++) lineArr.push(coord[i]);';
$ol_array .= 'arr.push(lineArr);';
}
return $ol_array;
}
/**
* Generates JavaScript for adding a LineString or LineRing to OpenLayers.
*
* @param array $points_arr x and y coordinates for each point
* @param string $srid spatial reference id
* @param bool $is_line_string whether it's a LineString
*
* @return string JavaScript for adding a LineString or LineRing to OpenLayers
*
* @access protected
*/
protected function getLineForOpenLayers(
array $points_arr,
$srid,
$is_line_string = true
) {
return 'new ol.geom.'
. ($is_line_string ? 'LineString' : 'LinearRing') . '('
. $this->getPointsArrayForOpenLayers($points_arr, $srid)
. ')';
}
/**
* Generates JavaScript for adding an array of points to OpenLayers.
*
* @param array $points_arr x and y coordinates for each point
* @param string $srid spatial reference id
*
* @return string JavaScript for adding an array of points to OpenLayers
*
* @access protected
*/
protected function getPointsArrayForOpenLayers(array $points_arr, $srid)
{
$ol_array = 'new Array(';
foreach ($points_arr as $point) {
$ol_array .= $this->getPointForOpenLayers($point, $srid) . '.getCoordinates(), ';
}
$ol_array
= mb_substr(
$ol_array,
0,
mb_strlen($ol_array) - 2
);
return $ol_array . ')';
}
/**
* Generates JavaScript for adding a point to OpenLayers.
*
* @param array $point array containing the x and y coordinates of the point
* @param string $srid spatial reference id
*
* @return string JavaScript for adding points to OpenLayers
*
* @access protected
*/
protected function getPointForOpenLayers(array $point, $srid)
{
return '(new ol.geom.Point([' . $point[0] . ',' . $point[1] . '])'
. '.transform(ol.proj.get("EPSG:' . ((int) $srid) . '")'
. ', ol.proj.get(\'EPSG:3857\')))';
}
protected function getRandomId(): int
{
return mt_rand();
}
}