1<?php
2
3/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
4
5/**
6 * 3d Library
7 *
8 * PHP versions 5
9 *
10 * LICENSE:
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
24 *
25 * @category  Image
26 * @package   Image_3D
27 * @author    Kore Nordmann <3d@kore-nordmann.de>
28 * @copyright 1997-2005 Kore Nordmann
29 * @license   http://www.gnu.org/licenses/lgpl.txt lgpl 2.1
30 * @version   CVS: $Id$
31 * @link      http://pear.php.net/package/PackageName
32 * @since     File available since Release 0.1.0
33 */
34
35require_once 'Image/3D/Vector.php';
36
37/**
38 * Image_3D_Line
39 *
40 * @category  Image
41 * @package   Image_3D
42 * @author    Kore Nordmann <3d@kore-nordmann.de>
43 * @copyright 1997-2005 Kore Nordmann
44 * @license   http://www.gnu.org/licenses/lgpl.txt lgpl 2.1
45 * @version   Release: @package_version@
46 * @link      http://pear.php.net/package/PackageName
47 * @since     Class available since Release 0.1.0
48 */
49class Image_3D_Line extends Image_3D_Vector
50{
51
52    protected $_direction;
53
54    public function __construct($x, $y, $z, Image_3D_Vector $direction)
55    {
56        parent::__construct($x, $y, $z);
57        $this->_direction = $direction;
58    }
59
60    public function calcPoint($t)
61    {
62        $t = (float) $t;
63
64        return new Image_3D_Coordinate(
65            $this->getX() + $t * $this->_direction->getX(),
66            $this->getY() + $t * $this->_direction->getY(),
67            $this->getZ() + $t * $this->_direction->getZ()
68        );
69    }
70
71    public function setDirection(Image_3D_Vector $direcetion)
72    {
73        $this->_direction = $direcetion;
74    }
75
76    public function getDirection()
77    {
78        return $this->_direction;
79    }
80
81    public function __toString()
82    {
83        return parent::__toString() . ' -> ' . $this->getDirection()->__toString();
84    }
85}
86
87?>
88