/phpmyadmin/libraries/gis/pma_gis_multilinestring.php
PHP | 348 lines | 215 code | 26 blank | 107 comment | 28 complexity | 532d059e8812a41c58a5f6631001a402 MD5 | raw file
Possible License(s): GPL-2.0, Apache-2.0
- <?php
- /**
- * Handles the visualization of GIS MULTILINESTRING objects.
- *
- * @package PhpMyAdmin-GIS
- */
- class PMA_GIS_Multilinestring extends PMA_GIS_Geometry
- {
- // Hold the singleton instance of the class
- private static $_instance;
- /**
- * A private constructor; prevents direct creation of object.
- */
- private function __construct()
- {
- }
- /**
- * Returns the singleton.
- *
- * @return the singleton
- */
- public static function singleton()
- {
- if (!isset(self::$_instance)) {
- $class = __CLASS__;
- self::$_instance = new $class;
- }
- return self::$_instance;
- }
- /**
- * Scales each row.
- *
- * @param string $spatial spatial data of a row
- *
- * @return array containing the min, max values for x and y cordinates
- */
- public function scaleRow($spatial)
- {
- $min_max = array();
- // Trim to remove leading 'MULTILINESTRING((' and trailing '))'
- $multilinestirng = substr($spatial, 17, (strlen($spatial) - 19));
- // Seperate 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 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
- * @param image $image Image object
- *
- * @return the modified image object
- */
- public function prepareRowAsPng($spatial, $label, $line_color, $scale_data, $image)
- {
- // allocate colors
- $black = imagecolorallocate($image, 0, 0, 0);
- $red = hexdec(substr($line_color, 1, 2));
- $green = hexdec(substr($line_color, 3, 2));
- $blue = hexdec(substr($line_color, 4, 2));
- $color = imagecolorallocate($image, $red, $green, $blue);
- // Trim to remove leading 'MULTILINESTRING((' and trailing '))'
- $multilinestirng = substr($spatial, 17, (strlen($spatial) - 19));
- // Seperate 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 $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 image $pdf TCPDF instance
- *
- * @return the modified TCPDF instance
- */
- public function prepareRowAsPdf($spatial, $label, $line_color, $scale_data, $pdf)
- {
- // allocate colors
- $red = hexdec(substr($line_color, 1, 2));
- $green = hexdec(substr($line_color, 3, 2));
- $blue = hexdec(substr($line_color, 4, 2));
- $line = array('width' => 1.5, 'color' => array($red, $green, $blue));
- // Trim to remove leading 'MULTILINESTRING((' and trailing '))'
- $multilinestirng = substr($spatial, 17, (strlen($spatial) - 19));
- // Seperate 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 $scale_data Array containing data related to scaling
- *
- * @return the code related to a row in the GIS dataset
- */
- public function prepareRowAsSvg($spatial, $label, $line_color, $scale_data)
- {
- $line_options = array(
- 'name' => $label,
- 'class' => 'linestring vector',
- 'fill' => 'none',
- 'stroke' => $line_color,
- 'stroke-width'=> 2,
- );
- // Trim to remove leading 'MULTILINESTRING((' and trailing '))'
- $multilinestirng = substr($spatial, 17, (strlen($spatial) - 19));
- // Seperate 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'] = $label . rand();
- foreach ($line_options as $option => $val) {
- $row .= ' ' . $option . '="' . trim($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 $scale_data Array containing data related to scaling
- *
- * @return JavaScript related to a row in the GIS dataset
- */
- public function prepareRowAsOl($spatial, $srid, $label, $line_color, $scale_data)
- {
- $style_options = array(
- '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 '))'
- $multilinestirng = substr($spatial, 17, (strlen($spatial) - 19));
- // Seperate each linestring
- $linestirngs = explode("),(", $multilinestirng);
- $row .= 'vectorLayer.addFeatures(new OpenLayers.Feature.Vector('
- . 'new OpenLayers.Geometry.MultiLineString(new Array(';
- foreach ($linestirngs as $linestring) {
- $points_arr = $this->extractPoints($linestring, null);
- $row .= 'new OpenLayers.Geometry.LineString(new Array(';
- foreach ($points_arr as $point) {
- $row .= '(new OpenLayers.Geometry.Point(' . $point[0] . ', '
- . $point[1] . ')).transform(new OpenLayers.Projection("EPSG:'
- . $srid . '"), map.getProjectionObject()), ';
- }
- $row = substr($row, 0, strlen($row) - 2);
- $row .= ')), ';
- }
- $row = substr($row, 0, strlen($row) - 2);
- $row .= ')), null, ' . json_encode($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 $empty Value for empty points
- *
- * @return WKT with the set of parameters passed by the GIS editor
- */
- public function generateWkt($gis_data, $index, $empty = '')
- {
- $no_of_lines = isset($gis_data[$index]['MULTILINESTRING']['no_of_lines'])
- ? $gis_data[$index]['MULTILINESTRING']['no_of_lines'] : 1;
- if ($no_of_lines < 1) {
- $no_of_lines = 1;
- }
- $wkt = 'MULTILINESTRING(';
- for ($i = 0; $i < $no_of_lines; $i++) {
- $no_of_points = isset($gis_data[$index]['MULTILINESTRING'][$i]['no_of_points'])
- ? $gis_data[$index]['MULTILINESTRING'][$i]['no_of_points'] : 2;
- if ($no_of_points < 2) {
- $no_of_points = 2;
- }
- $wkt .= '(';
- for ($j = 0; $j < $no_of_points; $j++) {
- $wkt .= ((isset($gis_data[$index]['MULTILINESTRING'][$i][$j]['x'])
- && trim($gis_data[$index]['MULTILINESTRING'][$i][$j]['x']) != '')
- ? $gis_data[$index]['MULTILINESTRING'][$i][$j]['x'] : $empty)
- . ' ' . ((isset($gis_data[$index]['MULTILINESTRING'][$i][$j]['y'])
- && trim($gis_data[$index]['MULTILINESTRING'][$i][$j]['y']) != '')
- ? $gis_data[$index]['MULTILINESTRING'][$i][$j]['y'] : $empty) . ',';
- }
- $wkt = substr($wkt, 0, strlen($wkt) - 1);
- $wkt .= '),';
- }
- $wkt = substr($wkt, 0, strlen($wkt) - 1);
- $wkt .= ')';
- return $wkt;
- }
- /**
- * Generate the WKT for the data from ESRI shape files.
- *
- * @param array $row_data GIS data
- *
- * @return the WKT for the data from ESRI shape files
- */
- public function getShape($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'] . ',';
- }
- $wkt = substr($wkt, 0, strlen($wkt) - 1);
- $wkt .= '),';
- }
- $wkt = substr($wkt, 0, strlen($wkt) - 1);
- $wkt .= ')';
- return $wkt;
- }
- /**
- * Generate parameters for the GIS data editor from the value of the GIS column.
- *
- * @param string $value of the GIS column
- * @param index $index of the geometry
- *
- * @return parameters for the GIS data editor from the value of the GIS column
- */
- public function generateParams($value, $index = -1)
- {
- if ($index == -1) {
- $index = 0;
- $params = array();
- $data = PMA_GIS_Geometry::generateParams($value);
- $params['srid'] = $data['srid'];
- $wkt = $data['wkt'];
- } else {
- $params[$index]['gis_type'] = 'MULTILINESTRING';
- $wkt = $value;
- }
- // Trim to remove leading 'MULTILINESTRING((' and trailing '))'
- $multilinestirng = substr($wkt, 17, (strlen($wkt) - 19));
- // Seperate 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;
- }
- }
- ?>