<?php

// +-------------------------------------------------+
// © 2002-2010 PMB Services / www.sigb.net pmb@sigb.net et contributeurs (voir www.sigb.net)
// +-------------------------------------------------+
// $Id: map_hold.class.php,v 1.12.6.1 2019/09/19 17:02:39 ngantier Exp $

if (stristr($_SERVER['REQUEST_URI'], ".class.php"))
    die("no access");
require_once($class_path . "/map/map_hold.class.php");
require_once($class_path . "/map/map_coord.class.php");

/**
 * class map_hold
 * 
 */
abstract class map_hold {
    /** Aggregations: */
    /** Compositions: */
    /*     * * Attributes: ** */

    /**
     * Tableau des coordonnées de l'emprise
     * @access protected
     */
    protected $coords = array();

    /**
     * Type de l'objet associé
     * @access protected
     */
    protected $object_type;

    /**
     * Identifiant de l'objet associé
     * @access protected
     */
    protected $num_object;

    /**
     * WKT
     * @access protected
     */
    protected $wkt = "";

    /**
     * map_hold bounding box 
     * @access protected
     */
    protected $bounding_box;

    /**
     * Tableau des coordonnées à jour (Booléen)
     * @access protected
     */
    protected $coords_uptodate = true;

    /**
     * WKT à jour (Booléen)
     * @access protected
     */
    protected $wkt_uptodate = true;

    /**
     * Transcription de la bounding box 
     * @access protected
     */
    protected $transcription = "";

    /**
     * Aire de la boite normalisée de l'emprise
     * @access protected
     */
    protected $normalized_bbox_area;

    /**
     * centre de la boite normalisée de l'emprise
     * @access protected
     */
    protected $center;
    
    protected $record;
    
    protected $color;

    /**
     *
     *
     * @param string object_type Type de l'objet associé

     * @param int num_object Identifiant de l'objet associé

     * @return void
     * @access public
     */
    public function __construct($object_type, $num_object, $wkt = "") {
        $this->object_type = $object_type;
        $this->num_object = $num_object;
        if ($wkt)
            $this->set_wkt($wkt);
    }

// end of member function __construct

    protected function build_coords() {
        $coords_string = substr($this->wkt, strpos($this->wkt, "(") + 2, -2);
        $coords = explode(",", $coords_string);
        $coordonnees = array();
        for ($i = 0; $i < count($coords); $i++) {
            $infos = array();
            $coord = $coords[$i];
            $infos = explode(" ", $coord);
            //on ne met pas la dernière coordonnée, c'est la même que la 1ere
            if (0 == $i || $coords[0] != $coords[$i]) {
                $this->coords[] = new map_coord($infos[0], $infos[1]);
            }
        }
        $this->coords_uptodate = true;
    }

    protected function build_wkt() {
        $this->wkt = $this->get_hold_type() . "(";
        foreach ($this->coords as $coord) {
            $this->wkt.= $coord->get_decimal_lat() . " " . $coord->get_decimal_long() . ",";
        }
        $this->wkt_uptodate = true;
    }

    protected function build_transcription() {
        $this->transcription = ""; // dépend du type 
    }

    public function get_transcription() {
        if (!$this->transcription) {
            $this->build_coords();
            $this->build_transcription();
        }
        return $this->transcription;
    }

    /**
     * Retourne une emprise normalisée contenant l'emprise courante
     *
     * @return map_hold
     * @access public
     */
    public function get_bounding_box() {
        global $dbh;

        if (!$this->bounding_box) {
            if (!$this->wkt_uptodate) {
                $this->build_wkt();
            }
            $query = " select astext(envelope(geomfromtext('" . $this->wkt . "'))) as bounding_box";
            $result = pmb_mysql_query($query, $dbh);
            if (pmb_mysql_num_rows($result)) {
                $this->bounding_box = new map_hold_polygon($this->object_type, $this->num_object, pmb_mysql_result($result, 0, 0));
            }
        }
        return $this->bounding_box;
    }
// end of member function get_bounding_box

    /**
     *
     *
     * @param Array() coords Tableau de coordonnée map_coord représentant l'emprise

     * @return void
     * @access public
     */
    public function set_coords($coords) {
        $this->coords = $coords;
        $this->coords_uptodate = true;
        $this->wkt_uptodate = false;
    }
// end of member function set_coords

    /**
     * Permet d'ajouter une coordonnée dans l'emprise  dans la propriété coords
     *
     * @param map_coord coord Coordonnée à  ajouter dans l'emprise

     * @param map_coord after

     * @return void
     * @access public
     */
    public function add_coord($coord, $after = null) {
        if (!$this->coords_uptodate) {
            $this->build_coords();
        }
        $coords = array();
        if ($after) {
            foreach ($this->coords as $i => $object) {
                $coords[] = $object;
                if (($object->get_decimal_lat() == $after->get_decimal_lat()) && ($object->get_decimal_long() == $after->get_decimal_long())) {
                    $coords[] = $coord;
                }
            }
        } else {
            $this->coords[] = $coords;
        }
        $this->coords = $coords;
        $this->wkt_uptodate = false;
    }
// end of member function add_coord

    /**
     * Permet de supprimer une coordonnée dans la propriété coords
     *
     * @param map_coord coord Coordonnée à  supprimer de l'emprise

     * @return void
     * @access public
     */
    public function delete_coord($coord) {
        if (!$this->coords_uptodate) {
            $this->build_coords();
        }
        $coords = array();
        foreach ($this->coords as $i => $object) {
            if (($object->get_decimal_lat() != $coord->get_decimal_lat()) && ($object->get_decimal_long() != $coord->get_decimal_long())) {
                $coords[] = $object;
            }
        }
        $this->coords = $coords;
        $this->wkt_uptodate = false;
    }
// end of member function delete_coord

    /**
     * Retourne le tableau des coordonnées
     *
     * @return Array()
     * @access public
     */
    public function get_coords() {
        if (!$this->coords_uptodate) {
            $this->build_coords();
        }
        return $this->coords;
    }
// end of member function get_coords

    /**
     * Sauvergarde de l'emprise
     *
     * @return bool
     * @access public
     */
    public function save() {
        
    }
// end of member function save

    /**
     * Méthode abstraite. A voir si on peut jouer avec les fonctions PHP de
     * manipulations de classes pour ne pas avoir à  dériver cette méthode...
     *
     * @return string
     * @abstract
     * @access public
     */
    abstract public function get_hold_type();

    /**
     * Retourne un export de l'emprise au format WKT
     *
     * @return string
     * @access public
     */
    public function export() {
        
    }

// end of member function export

    public function get_num_object() {
        return $this->num_object;
    }

    public function set_num_object($num_object) {
        $this->num_object = $num_object;
    }
    
    public function set_record($ids) {
        $this->record = $ids;
    }
    
    public function get_record() {
        return $this->record;
    }

    public function set_wkt($wkt) {
        $this->wkt = $wkt;
        $this->coords_uptodate = false;
        $this->wkt_uptodate = true;
    }

    public function get_wkt() {
        if (!$this->wkt_uptodate) {
            $this->build_wkt();
        }
        return $this->wkt;
    }

    public function get_normalized_bbox_area() {
        return $this->normalized_bbox_area;
    }

    public function set_normalized_bbox_area($bbox) {
        $this->normalized_bbox_area = $bbox;
    }

    public function get_center() {
        return $this->center;
    }

    public function set_center($center) {
        $this->center = $center;
    }
    
    public function set_color($color) {
        $this->color = $color;
    }
}

// end of map_hold