1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382
|
<?php
/**
* Base class for all GIS data type classes
*/
declare(strict_types=1);
namespace PhpMyAdmin\Gis;
use PhpMyAdmin\Image\ImageWrapper;
use TCPDF;
use function explode;
use function floatval;
use function mb_strripos;
use function mb_substr;
use function mt_getrandmax;
use function preg_match;
use function random_int;
use function sprintf;
use function str_replace;
use function trim;
/**
* Base class for all GIS data type classes.
*/
abstract class GisGeometry
{
/**
* Prepares and returns the code related to a row in the GIS dataset as SVG.
*
* @param string $spatial GIS data object
* @param string $label label for the GIS data object
* @param string $color color for the GIS data object
* @param array $scale_data data related to scaling
*
* @return string the code related to a row in the GIS dataset
*/
abstract public function prepareRowAsSvg($spatial, $label, $color, array $scale_data);
/**
* Adds to the PNG image object, the data related to a row in the GIS dataset.
*
* @param string $spatial GIS POLYGON object
* @param string|null $label Label for the GIS POLYGON object
* @param string $color Color for the GIS POLYGON object
* @param array $scale_data Array containing data related to scaling
*/
abstract public function prepareRowAsPng(
$spatial,
?string $label,
$color,
array $scale_data,
ImageWrapper $image
): ImageWrapper;
/**
* Adds to the TCPDF instance, the data related to a row in the GIS dataset.
*
* @param string $spatial GIS data object
* @param string|null $label label for the GIS data object
* @param string $color color for the GIS data object
* @param array $scale_data array containing data related to scaling
* @param TCPDF $pdf TCPDF instance
*
* @return TCPDF the modified TCPDF instance
*/
abstract public function prepareRowAsPdf(
$spatial,
?string $label,
$color,
array $scale_data,
$pdf
);
/**
* Prepares the JavaScript related to a row in the GIS dataset
* to visualize it with OpenLayers.
*
* @param string $spatial GIS data object
* @param int $srid spatial reference ID
* @param string $label label for the GIS data object
* @param array $color color for the GIS data object
* @param array $scale_data array containing data related to scaling
*
* @return string the JavaScript related to a row in the GIS dataset
*/
abstract public function prepareRowAsOl(
$spatial,
int $srid,
$label,
$color,
array $scale_data
);
/**
* Scales each row.
*
* @param string $spatial spatial data of a row
*
* @return array array containing the min, max values for x and y coordinates
*/
abstract public function scaleRow($spatial);
/**
* Generates the WKT with the set of parameters passed by the GIS editor.
*
* @param array $gis_data GIS data
* @param int $index index into the parameter object
* @param string|null $empty value for empty points
*
* @return string WKT with the set of parameters passed by the GIS editor
*/
abstract public function generateWkt(array $gis_data, $index, $empty = '');
/**
* Returns OpenLayers.Bounds object that correspond to the bounds of GIS data.
*
* @param int $srid spatial reference ID
* @param array $scale_data data related to scaling
*
* @return string OpenLayers.Bounds object that
* correspond to the bounds of GIS data
*/
protected function getBoundsForOl(int $srid, array $scale_data)
{
return sprintf(
'var minLoc = [%s, %s];'
. 'var maxLoc = [%s, %s];'
. 'var ext = ol.extent.boundingExtent([minLoc, maxLoc]);'
. 'ext = ol.proj.transformExtent(ext, ol.proj.get("EPSG:%s"), ol.proj.get(\'EPSG:3857\'));'
. 'map.getView().fit(ext, map.getSize());',
$scale_data['minX'],
$scale_data['minY'],
$scale_data['maxX'],
$scale_data['maxY'],
$srid
);
}
/**
* Updates the min, max values with the given point set.
*
* @param string $point_set point set
* @param array $min_max existing min, max values
*
* @return array the updated min, max values
*/
protected function setMinMax($point_set, array $min_max)
{
// Separate each point
$points = explode(',', $point_set);
foreach ($points as $point) {
// Extract coordinates of the point
$cordinates = explode(' ', $point);
$x = (float) $cordinates[0];
if (! isset($min_max['maxX']) || $x > $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 $value value of the GIS column
*
* @return array parameters for the GIS editor from the value of the GIS column
*/
public function generateParams($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, ',');
$srid = (int) trim(mb_substr($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 $linear if true, as a 1D array, else as a 2D array
*
* @return array scaled points
*/
protected function extractPoints($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 int $srid spatial reference id
*
* @return string JavaScript for adding an array of polygons to OpenLayers
*/
protected function getPolygonArrayForOpenLayers(array $polygons, int $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 int $srid spatial reference id
*
* @return string JavaScript for adding points for OpenLayers polygon
*/
protected function getPolygonForOpenLayers(array $polygon, int $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 int $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
*/
protected function getLineArrayForOpenLayers(
array $lines,
int $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 int $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
*/
protected function getLineForOpenLayers(
array $points_arr,
int $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 int $srid spatial reference id
*
* @return string JavaScript for adding an array of points to OpenLayers
*/
protected function getPointsArrayForOpenLayers(array $points_arr, int $srid)
{
$ol_array = 'new Array(';
foreach ($points_arr as $point) {
$ol_array .= $this->getPointForOpenLayers($point, $srid) . '.getCoordinates(), ';
}
$ol_array = mb_substr($ol_array, 0, -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 int $srid spatial reference id
*
* @return string JavaScript for adding points to OpenLayers
*/
protected function getPointForOpenLayers(array $point, int $srid)
{
return '(new ol.geom.Point([' . $point[0] . ',' . $point[1] . '])'
. '.transform(ol.proj.get("EPSG:' . $srid . '")'
. ', ol.proj.get(\'EPSG:3857\')))';
}
protected function getRandomId(): int
{
return random_int(0, mt_getrandmax());
}
}
|