setMinMax($linestring, []); } /** * 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 'LINESTRING(' and trailing ')' $linesrting = mb_substr( $spatial, 11, mb_strlen($spatial) - 12 ); $points_arr = $this->extractPoints($linesrting, $scale_data); foreach ($points_arr as $point) { if (! isset($temp_point)) { $temp_point = $point; } else { // draw line section imageline( $image, (int) $temp_point[0], (int) $temp_point[1], (int) $point[0], (int) $point[1], $color ); $temp_point = $point; } } // print label if applicable if (isset($label) && trim($label) != '') { imagestring( $image, 1, $points_arr[1][0], $points_arr[1][1], trim($label), $black ); } return $image; } /** * Adds to the TCPDF instance, the data related to a row in the GIS dataset. * * @param string $spatial GIS LINESTRING object * @param string|null $label Label for the GIS LINESTRING object * @param string $line_color Color for the GIS LINESTRING 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 'LINESTRING(' and trailing ')' $linesrting = mb_substr( $spatial, 11, mb_strlen($spatial) - 12 ); $points_arr = $this->extractPoints($linesrting, $scale_data); foreach ($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 = $point; } } // print label if (isset($label) && trim($label) != '') { $pdf->SetXY($points_arr[1][0], $points_arr[1][1]); $pdf->SetFontSize(5); $pdf->Cell(0, 0, trim($label)); } return $pdf; } /** * Prepares and returns the code related to a row in the GIS dataset as SVG. * * @param string $spatial GIS LINESTRING object * @param string $label Label for the GIS LINESTRING object * @param string $line_color Color for the GIS LINESTRING 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, 'id' => $label . $this->getRandomId(), 'class' => 'linestring vector', 'fill' => 'none', 'stroke' => $line_color, 'stroke-width' => 2, ]; // Trim to remove leading 'LINESTRING(' and trailing ')' $linesrting = mb_substr( $spatial, 11, mb_strlen($spatial) - 12 ); $points_arr = $this->extractPoints($linesrting, $scale_data); $row = ' $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 LINESTRING object * @param int $srid Spatial reference ID * @param string $label Label for the GIS LINESTRING object * @param array $line_color Color for the GIS LINESTRING 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) { $stroke_style = [ 'color' => $line_color, 'width' => 2, ]; $result = 'var style = new ol.style.Style({' . 'stroke: new ol.style.Stroke(' . json_encode($stroke_style) . ')'; if ($label) { $text_style = ['text' => $label]; $result .= ', text: new ol.style.Text(' . json_encode($text_style) . ')'; } $result .= '});'; if ($srid == 0) { $srid = 4326; } $result .= $this->getBoundsForOl($srid, $scale_data); // Trim to remove leading 'LINESTRING(' and trailing ')' $linesrting = mb_substr( $spatial, 11, mb_strlen($spatial) - 12 ); $points_arr = $this->extractPoints($linesrting, null); return $result . 'var line = new ol.Feature({geometry: ' . $this->getLineForOpenLayers($points_arr, $srid) . '});' . 'line.setStyle(style);' . 'vectorLayer.addFeature(line);'; } /** * 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 = '') { $no_of_points = $gis_data[$index]['LINESTRING']['no_of_points'] ?? 2; if ($no_of_points < 2) { $no_of_points = 2; } $wkt = 'LINESTRING('; for ($i = 0; $i < $no_of_points; $i++) { $wkt .= (isset($gis_data[$index]['LINESTRING'][$i]['x']) && trim((string) $gis_data[$index]['LINESTRING'][$i]['x']) != '' ? $gis_data[$index]['LINESTRING'][$i]['x'] : $empty) . ' ' . (isset($gis_data[$index]['LINESTRING'][$i]['y']) && trim((string) $gis_data[$index]['LINESTRING'][$i]['y']) != '' ? $gis_data[$index]['LINESTRING'][$i]['y'] : $empty) . ','; } $wkt = mb_substr( $wkt, 0, mb_strlen($wkt) - 1 ); return $wkt . ')'; } /** * Generate parameters for the GIS data editor from the value of the GIS column. * * @param string $value of the GIS column * @param int $index of the geometry * * @return array params for the GIS data editor from the value of the GIS column * * @access public */ public function generateParams($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'] = 'LINESTRING'; $wkt = $value; } // Trim to remove leading 'LINESTRING(' and trailing ')' $linestring = mb_substr( $wkt, 11, mb_strlen($wkt) - 12 ); $points_arr = $this->extractPoints($linestring, null); $no_of_points = count($points_arr); $params[$index]['LINESTRING']['no_of_points'] = $no_of_points; for ($i = 0; $i < $no_of_points; $i++) { $params[$index]['LINESTRING'][$i]['x'] = $points_arr[$i][0]; $params[$index]['LINESTRING'][$i]['y'] = $points_arr[$i][1]; } return $params; } }