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<?php
/**
*
* EGMapKMLPolygon Class
*
* KML Polygon tag object
*
* A Polygon is defined by an outer boundary and 0 or more inner boundaries. The boundaries, in turn, are defined
* by LinearRings. When a Polygon is extruded, its boundaries are connected to the ground to form additional polygons,
* which gives the appearance of a building or a box. Extruded Polygons use <PolyStyle> for their color, color mode, and fill.
* The <coordinates> for polygons must be specified in counterclockwise order. Polygons follow the "right-hand rule,"
* which states that if you place the fingers of your right hand in the direction in which the coordinates are specified,
* your thumb points in the general direction of the geometric normal for the polygon.
*
*
* @author Antonio Ramirez Cobos
* @link www.ramirezcobos.com
*
*
* @copyright
*
* Copyright (c) 2010 Antonio Ramirez Cobos
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
class EGMapKMLPolygon extends EGMapKMLNode{
/**
* <Polygon>
* <innerBoundaryIs> // only supported here
* <LinearRing>
* <coordinates>
* -122.366212,37.818977,30
* -122.365424,37.819294,30
* </coordinates>
* </LinearRing>
* </innerBoundaryIs>
* </Polygon>
* Another way
* <MultiGeometry>
* <Polygon>
* <outerBoundaryIs>
* <LinearRing>
* <coordinates>-122.1,37.4,0 -122.0,37.4,0 -122.0,37.5,0 -122.1,37.5,0 -122.1,37.4,0</coordinates>
* </LinearRing>
* </outerBoundaryIs>
* </Polygon>
* </MultiGeometry>
*
* <outerBoundaryIs> (required)
* Contains a <LinearRing> element.
* <innerBoundaryIs>
* Contains a <LinearRing> element.
* A Polygon can contain multiple <innerBoundaryIs> elements,
* which create multiple cut-outs inside the Polygon.
*/
/**
*
* Coordinates array
* @var array
*/
protected $coordinates = array();
/**
*
* outerBoundaryIs = true
* innerBoundaryIs = false
* @var boolean
*/
protected $boundary;
/**
*
* Enter description here ...
* @param boolean $outerBoundaryIs
* @param array $coordinates
*/
public function __construct( $outerBoundaryIs = false, $coordinates = array() ){
$this->tag = 'Polygon';
$this->boundary = $outerBoundaryIs;
if(is_array($coordinates)) $this->coordinates = $coordinates;
}
/**
*
* Adds a coordenate to the array
* @param float | numeric string $latitude
* @param float | numeric string $longitude
* @param float | numeric string $elevation
*/
public function addCoordenate( $latitude, $longitude, $elevation ){
$this->coordinates[] = $longitude.','.$latitude.','.$elevation;
}
/**
*
* Adds array of coordenates
* @param array $coords
* @throws CException
*/
public function addCoordenates( $coords ){
if(!is_array( $coords) )
throw new CException( Yii::t('EGMap','Coordinates parameter must be of type array'));
foreach($coords as $coord){
$this->coordinates[] = $coord;
}
}
/**
* (non-PHPdoc)
* @see EGMapKMLNode::toXML()
*/
public function toXML(){
$node = new EGMapKMLNode('LinearRing');
$node->addChild(new EGMapKMLNode('coordinates', $this->coordinates ));
$parentNode = new EGMapKMLNode(($this->boundary?'outerBoundaryIs':'innerBoundaryIs'));
$parentNode->addChild( $node );
$this->addChild( $parentNode );
return parent::toXML();
}
}
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