<?php
# $Id$
# http://www.mapbender.org/index.php/class_gmlMember.php
# Copyright (C) 2002 CCGIS 
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

class gmlMember { 
	var $cnt_item;
	var $memberType;
	var $attributes = array();
	var $geometry = array();
	
	function gmlMember ($type) {
		$this->cnt_item = -1;
		$this->setMemberType($type);
	}

	function setAttribute($attribTag, $attrib) {
		$this->attributes[$attribTag] = $attrib;
	}

	function setMemberType($type) {
		$this->memberType = $type;
	}

	function addPolygon () {
		$this->cnt_item++;
		$this->geometry[$this->cnt_item] = new _polygon();
	}

	function addLine () {
		$this->cnt_item++;
		$this->geometry[$this->cnt_item] = new _line();
	}
	
	function addPoint () {
		$this->cnt_item++;
		$this->geometry[$this->cnt_item] = new _point();
	}
	
#	function addCoordinates ($coord, $pos) {
#		$this->geometry[$this->cnt_item]->addCoordinates($coord, $pos);
#	}

	function addCoordinates ($coord) {
		$this->geometry[$this->cnt_item]->addCoordinates($coord);
	}

	function addLabel($label) {
		$this->geometry[$this->cnt_item]->setLabel($label);
	}

	function addToPng($image, $bbox, $width, $height, $line, $text, $label) {
		$pos = array();
		$pos_next = array();

		for ($j=0; $j < count($this->geometry); $j++) {
				
				$coord = $this->geometry[$j]->getCoordinates();

				if ($this->geometry[$j]->getType() == "point") {
				$topOffset = imagefontheight(2);
				$pos = $this->makeRealWorld2mapPos($bbox, $width, $height, $coord["x"][0],$coord["y"][0]);
				imagestring ($image, 2,$pos["x"], ($pos["y"] - $topOffset), $this->getAttribute($label), $text);
				imageellipse($image, $pos["x"], $pos["y"], 5, 5, $line);
				}
				else { 
				for($k=0; $k < count($coord["x"])-1; $k++){
					$pos = $this->makeRealWorld2mapPos($bbox, $width, $height, $coord["x"][$k],$coord["y"][$k]);
					$pos_next = $this->makeRealWorld2mapPos($bbox, $width, $height, $coord["x"][$k+1],$coord["y"][$k+1]);			  		
					imageline($image,$pos["x"],$pos["y"],$pos_next["x"],$pos_next["y"],$line);

				} 
		} 
		return $image;
	}
	}

	function getAllGeom() {
		return $this->geometry;
	}

	function getAllAttributes() {
		return $this->attributes;
	}

	function getAllAttributeKeys() {
		return array_keys($this->attributes);
	}

	function getAttribute($name) {
		if (array_key_exists($name, $this->attributes)) {
			return $this->attributes["$name"];
		}
		else {
			return "";
		}
	}

	function getGeomObj($index) {
		return $this->geometry[$index];
	}

	function getMemberType() {
		return $this->memberType;
	}	

	function getMemberSize() {
		return count($this->geometry);
	}	

	function getGeomSize($i) {
		return count($this->geometry[$i]);
	}	


	function getJavaObjStr($bbox, $width, $height) {
		$str = "";
		for ($j=0; $j < count($this->geometry); $j++) {
			
			$coord = $this->geometry[$j]->getCoordinates();

			$str .= "register_D('" . $this->geometry[$j]->getType() . "');";
			
			if ($this->geometry[$j]->getType() == "point" && $this->geometry[$j]->getLabel()) {
				$str .= "D[D.length-1].label = '" . $this->geometry[$j]->getLabel() . "';";
			}		
		
			for($k=0; $k < count($coord["x"]); $k++){
				$pos = $this->makeRealWorld2mapPos($bbox, $width, $height,$coord["x"][$k],$coord["y"][$k]);				
				$str .= "D[D.length-1].x[D[D.length-1].x.length] = Math.round(" . $coord["x"][$k] . " * 100)/100;";
				$str .= "D[D.length-1].y[D[D.length-1].y.length] = Math.round(" . $coord["y"][$k] . " * 100)/100;";				
			}
			$str .= "D[D.length-1].complete = true;";
		}
		return $str;
	}

	function makeRealWorld2mapPos($bbox, $width, $height, $x,$y){
		$minx = $bbox[0];
		$miny = $bbox[1];
		$maxx = $bbox[2];
		$maxy = $bbox[3];
		$xtentx = $maxx - $minx;
		$xtenty = $maxy - $miny;
		if ($xtenty != 0 && $xtentx != 0) {
			
			$posx = (($x - $minx) / $xtentx) * $width;
			$posy = (($maxy - $y) / $xtenty) * $height;

			$pos = array("x" => $posx, "y" => $posy);
			return $pos;
		}
		if ($xtenty == 0 || $xtentx == 0) {
			$mb_exception = new mb_exception("Division by zero in makeRealWorld2mapPos");
			return 0;
		}
	}


}
?>