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diff --git a/includes/geo/point3D.php b/includes/geo/point3D.php
index 445dfa5..2cadc83 100644
--- a/includes/geo/point3D.php
+++ b/includes/geo/point3D.php
@@ -1,208 +1,210 @@
<?php
/**
* Geo point 3D class.
*
* Zed. The immensity of stars. The HyperShip. The people.
*
* (c) 2010, Dereckson, some rights reserved.
* Released under BSD license.
*
* 0.1 2010-02-23 14:14 DcK
*
* @package Zed
* @subpackage Geo
* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
* @copyright 2010 Sébastien Santoro aka Dereckson
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @version 0.1
* @link http://scherzo.dereckson.be/doc/zed
* @link http://zed.dereckson.be/
* @filesource
*/
/**
* Geo point 3D class.
*
* This class represents a x, y, z point.
*
* It implements IteratorAggregate to allow the foreach instruction
* on a GeoPoint3D object:
*
* <code>
* $point = new GeoPoint3D(17, 24, -6);
* foreach ($point as $axis => $coordinate) {
* echo "\n\t$axis = $coordinate";
* }
* //This will output:
* // x = 17
* // y = 24
* // z = -6
* </code>
*
* The point 3D representation is xyz: [x, y, z] ; you can print it as a string
* and get this format:
*
* <code>
* $point = new GeoPoint3D(17, 24, -6);
* echo (string)$point; //will output xyz: [17, 24, -6]
* </code>
*
*/
class GeoPoint3D implements IteratorAggregate {
//
// x, y, z public properties
//
/**
* the x coordinate
*
* @var integer
*/
public $x;
/**
* the y coordinate
*
* @var integer
*/
public $y;
/**
* the z coordinate
*
* @var integer
*/
public $z;
//
// constructor / toString
//
/**
* Initializes a new instance of GeoPoint3D class
*
* @param int $x the x coordinate
* @param int $y the y coordinate
* @param int $z the z coordinate
*/
function __construct ($x, $y, $z) {
$this->x = (int)$x;
$this->y = (int)$y;
$this->z = (int)$z;
}
/**
* Parses a xyz: [x, y, z] string expression ang gets a GeoPoint3D object
*
* @param string $expression the expression to parse
* @return GeoPoint3D If the specified expression could be parsed, a GeoPoint3D instance ; otherwise, null.
*/
static function fromString ($expression) {
if (string_starts_with($expression, 'xyz:', false)) {
$pos1 = strpos($expression, '[', 4) + 1;
$pos2 = strpos($expression, ']', $pos1);
if ($pos1 > -1 && $pos2 > -1) {
$expression = substr($expression, $pos1, $pos2 - $pos1);
$xyz = explode(',', $expression, 3);
return new GeoPoint3D($xyz[0], $xyz[1], $xyz[2]);
}
}
return null;
}
/**
* Returns a xyz: [x, y, z] string representation of the point coordinates.
*
* @return string a xyz: [x, y, z] string representation of the coordinates
*/
function __toString () {
return sprintf("xyz: [%d, %d, %d]", $this->x, $this->y, $this->z);
}
/**
* Determines if this point is equal to the specified point.
*
* @param GeoPoint3D $point The point to compare
* @return bool true if the two points are equal ; otherwise, false.
*/
function equals ($point) {
return ($this->x == $point->x) && ($this->y == $point->y) && ($this->z == $point->z);
}
//
// Math
//
/**
* Gets the (ρ, φ, θ) spherical coordinates from the current x, y, z cartesian point
*
* The algo used is from http://fr.wikipedia.org/wiki/Coordonn%C3%A9es_sph%C3%A9riques#Relation_avec_les_autres_syst.C3.A8mes_de_coordonn.C3.A9es_usuels
*
* @return array an array of 3 floats number, representing the (ρ, φ, θ) spherical coordinates
*/
function to_spherical () {
return GeoGalaxy::cartesian_to_spherical($this->x, $this->y, $this->z);
}
/**
* Gets the (ρ, φ, θ) spherical coordinates from the current x, y, z cartesian point
*
* The algo used is from http://www.phy225.dept.shef.ac.uk/mediawiki/index.php/Cartesian_to_polar_conversion
*
* @return array an array of 3 floats number, representing the (ρ, φ, θ) spherical coordinates
*/
function to_spherical2 () {
return GeoGalaxy::cartesian_to_spherical2($this->x, $this->y, $this->z);
}
/**
* Translates the center and rescales.
*
* This method allow to help to represent coordinate in a new system
*
* This method is used to represent Zed objects in dojo with the following
* parameters:
* <code>
* $pointKaos = GeoPoint3D(800, 42, 220);
* $pointKaos->translate(500, 300, 200, 2);
+ * echo $pointKaos;
+ * //This will output xyz: [150, -129, 10]
* </code>
*
* @param int $dx the difference between the old x and new x (ie the value of x = 0 in the new system)
* @param int $dy the difference between the old y and new y (ie the value of y = 0 in the new system)
* @param int $dz the difference between the old y and new z (ie the value of z = 0 in the new system)
- * @scale float $scale if specified, divides each coordinate by this value (optional)
+ * @param float $scale if specified, divides each coordinate by this value (optional)
*/
function translate ($dx, $dy, $dz, $scale = 1) {
if ($scale == 1) {
$this->x += $dx;
$this->y += $dy;
$this->z += $dz;
} elseif ($scale == 0) {
$this->x = 0;
$this->y = 0;
$this->z = 0;
} else {
$this->x = $this->x * $scale + $dx;
$this->y = $this->y * $scale + $dy;
$this->z = $this->z * $scale + $dz;
}
}
//
// Implementing IteratorAggregate
//
/**
* Retrieves class iterator. It traverses x, y and z.
*
* @return Traversable the iterator
*/
function getIterator () {
return new ArrayIterator($this);
}
}
-?>
\ No newline at end of file
+?>

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