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<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Handles actions related to GIS MULTILINESTRING objects * * @package PhpMyAdmin-GIS */ declare(strict_types=1); namespace PhpMyAdmin\Gis; use TCPDF; /** * Handles actions related to GIS MULTILINESTRING objects * * @package PhpMyAdmin-GIS */ class GisMultiLineString extends GisGeometry { // Hold the singleton instance of the class private static $_instance; /** * A private constructor; prevents direct creation of object. * * @access private */ private function __construct() { } /** * Returns the singleton. * * @return GisMultiLineString the singleton * @access public */ public static function singleton() { if (! isset(self::$_instance)) { self::$_instance = new GisMultiLineString(); } return self::$_instance; } /** * Scales each row. * * @param string $spatial spatial data of a row * * @return array an array containing the min, max values for x and y coordinates * @access public */ public function scaleRow($spatial) { $min_max = []; // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $spatial, 17, mb_strlen($spatial) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); foreach ($linestirngs as $linestring) { $min_max = $this->setMinMax($linestring, $min_max); } return $min_max; } /** * 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 $line_color Color for the GIS POLYGON object * @param array $scale_data Array containing data related to scaling * @param resource $image Image object * * @return resource the modified image object * @access public */ public function prepareRowAsPng( $spatial, ?string $label, $line_color, array $scale_data, $image ) { // allocate colors $black = imagecolorallocate($image, 0, 0, 0); $red = hexdec(mb_substr($line_color, 1, 2)); $green = hexdec(mb_substr($line_color, 3, 2)); $blue = hexdec(mb_substr($line_color, 4, 2)); $color = imagecolorallocate($image, $red, $green, $blue); // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $spatial, 17, mb_strlen($spatial) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); $first_line = true; foreach ($linestirngs as $linestring) { $points_arr = $this->extractPoints($linestring, $scale_data); foreach ($points_arr as $point) { if (! isset($temp_point)) { $temp_point = $point; } else { // draw line section imageline( $image, $temp_point[0], $temp_point[1], $point[0], $point[1], $color ); $temp_point = $point; } } unset($temp_point); // print label if applicable if (isset($label) && trim($label) != '' && $first_line) { imagestring( $image, 1, $points_arr[1][0], $points_arr[1][1], trim($label), $black ); } $first_line = false; } return $image; } /** * Adds to the TCPDF instance, the data related to a row in the GIS dataset. * * @param string $spatial GIS MULTILINESTRING object * @param string|null $label Label for the GIS MULTILINESTRING object * @param string $line_color Color for the GIS MULTILINESTRING object * @param array $scale_data Array containing data related to scaling * @param TCPDF $pdf TCPDF instance * * @return TCPDF the modified TCPDF instance * @access public */ public function prepareRowAsPdf($spatial, ?string $label, $line_color, array $scale_data, $pdf) { // allocate colors $red = hexdec(mb_substr($line_color, 1, 2)); $green = hexdec(mb_substr($line_color, 3, 2)); $blue = hexdec(mb_substr($line_color, 4, 2)); $line = [ 'width' => 1.5, 'color' => [ $red, $green, $blue, ], ]; // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $spatial, 17, mb_strlen($spatial) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); $first_line = true; foreach ($linestirngs as $linestring) { $points_arr = $this->extractPoints($linestring, $scale_data); foreach ($points_arr as $point) { if (! isset($temp_point)) { $temp_point = $point; } else { // draw line section $pdf->Line( $temp_point[0], $temp_point[1], $point[0], $point[1], $line ); $temp_point = $point; } } unset($temp_point); // print label if (isset($label) && trim($label) != '' && $first_line) { $pdf->SetXY($points_arr[1][0], $points_arr[1][1]); $pdf->SetFontSize(5); $pdf->Cell(0, 0, trim($label)); } $first_line = false; } return $pdf; } /** * Prepares and returns the code related to a row in the GIS dataset as SVG. * * @param string $spatial GIS MULTILINESTRING object * @param string $label Label for the GIS MULTILINESTRING object * @param string $line_color Color for the GIS MULTILINESTRING object * @param array $scale_data Array containing data related to scaling * * @return string the code related to a row in the GIS dataset * @access public */ public function prepareRowAsSvg($spatial, $label, $line_color, array $scale_data) { $line_options = [ 'name' => $label, 'class' => 'linestring vector', 'fill' => 'none', 'stroke' => $line_color, 'stroke-width' => 2, ]; // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $spatial, 17, mb_strlen($spatial) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); $row = ''; foreach ($linestirngs as $linestring) { $points_arr = $this->extractPoints($linestring, $scale_data); $row .= '<polyline points="'; foreach ($points_arr as $point) { $row .= $point[0] . ',' . $point[1] . ' '; } $row .= '"'; $line_options['id'] = $label . mt_rand(); foreach ($line_options as $option => $val) { $row .= ' ' . $option . '="' . trim((string) $val) . '"'; } $row .= '/>'; } return $row; } /** * Prepares JavaScript related to a row in the GIS dataset * to visualize it with OpenLayers. * * @param string $spatial GIS MULTILINESTRING object * @param int $srid Spatial reference ID * @param string $label Label for the GIS MULTILINESTRING object * @param string $line_color Color for the GIS MULTILINESTRING object * @param array $scale_data Array containing data related to scaling * * @return string JavaScript related to a row in the GIS dataset * @access public */ public function prepareRowAsOl($spatial, $srid, $label, $line_color, array $scale_data) { $style_options = [ 'strokeColor' => $line_color, 'strokeWidth' => 2, 'label' => $label, 'fontSize' => 10, ]; if ($srid == 0) { $srid = 4326; } $row = $this->getBoundsForOl($srid, $scale_data); // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $spatial, 17, mb_strlen($spatial) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); $row .= 'vectorLayer.addFeatures(new OpenLayers.Feature.Vector(' . 'new OpenLayers.Geometry.MultiLineString(' . $this->getLineArrayForOpenLayers($linestirngs, $srid) . '), null, ' . json_encode($style_options) . '));'; return $row; } /** * Generate 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 $empty Value for empty points * * @return string WKT with the set of parameters passed by the GIS editor * @access public */ public function generateWkt(array $gis_data, $index, $empty = '') { $data_row = $gis_data[$index]['MULTILINESTRING']; $no_of_lines = isset($data_row['no_of_lines']) ? $data_row['no_of_lines'] : 1; if ($no_of_lines < 1) { $no_of_lines = 1; } $wkt = 'MULTILINESTRING('; for ($i = 0; $i < $no_of_lines; $i++) { $no_of_points = isset($data_row[$i]['no_of_points']) ? $data_row[$i]['no_of_points'] : 2; if ($no_of_points < 2) { $no_of_points = 2; } $wkt .= '('; for ($j = 0; $j < $no_of_points; $j++) { $wkt .= ((isset($data_row[$i][$j]['x']) && trim((string) $data_row[$i][$j]['x']) != '') ? $data_row[$i][$j]['x'] : $empty) . ' ' . ((isset($data_row[$i][$j]['y']) && trim((string) $data_row[$i][$j]['y']) != '') ? $data_row[$i][$j]['y'] : $empty) . ','; } $wkt = mb_substr( $wkt, 0, mb_strlen($wkt) - 1 ); $wkt .= '),'; } $wkt = mb_substr( $wkt, 0, mb_strlen($wkt) - 1 ); $wkt .= ')'; return $wkt; } /** * Generate the WKT for the data from ESRI shape files. * * @param array $row_data GIS data * * @return string the WKT for the data from ESRI shape files * @access public */ public function getShape(array $row_data) { $wkt = 'MULTILINESTRING('; for ($i = 0; $i < $row_data['numparts']; $i++) { $wkt .= '('; foreach ($row_data['parts'][$i]['points'] as $point) { $wkt .= $point['x'] . ' ' . $point['y'] . ','; } $wkt = mb_substr( $wkt, 0, mb_strlen($wkt) - 1 ); $wkt .= '),'; } $wkt = mb_substr( $wkt, 0, mb_strlen($wkt) - 1 ); $wkt .= ')'; return $wkt; } /** * Generate parameters for the GIS data editor from the value of the GIS column. * * @param string $value Value of the GIS column * @param int $index Index of the geometry * * @return array params for the GIS data editor from the value of the GIS column * @access public */ public function generateParams($value, $index = -1) { $params = []; if ($index == -1) { $index = 0; $data = GisGeometry::generateParams($value); $params['srid'] = $data['srid']; $wkt = $data['wkt']; } else { $params[$index]['gis_type'] = 'MULTILINESTRING'; $wkt = $value; } // Trim to remove leading 'MULTILINESTRING((' and trailing '))' $multilinestirng = mb_substr( $wkt, 17, mb_strlen($wkt) - 19 ); // Separate each linestring $linestirngs = explode("),(", $multilinestirng); $params[$index]['MULTILINESTRING']['no_of_lines'] = count($linestirngs); $j = 0; foreach ($linestirngs as $linestring) { $points_arr = $this->extractPoints($linestring, null); $no_of_points = count($points_arr); $params[$index]['MULTILINESTRING'][$j]['no_of_points'] = $no_of_points; for ($i = 0; $i < $no_of_points; $i++) { $params[$index]['MULTILINESTRING'][$j][$i]['x'] = $points_arr[$i][0]; $params[$index]['MULTILINESTRING'][$j][$i]['y'] = $points_arr[$i][1]; } $j++; } return $params; } }