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 35// {{{ Image_3D_Renderer_Perspectively 36 37/** 38 * Image_3D_Renderer_Perspectively 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_Renderer_Perspectively extends Image_3D_Renderer 50{ 51 52 // {{{ _calculateScreenCoordiantes() 53 54 /** 55 * Caclulate Screen Coordinates 56 * 57 * Calculate perspectively screen coordinates for a point 58 * 59 * @param Image_3D_Point $point Point to process 60 * 61 * @return void 62 */ 63 protected function _calculateScreenCoordiantes(Image_3D_Point $point) 64 { 65 $viewpoint = 500.; 66 $distance = 500.; 67 68 $point->setScreenCoordinates($viewpoint * $point->getX() / ($point->getZ() + $distance) + $this->_size[0], 69 $viewpoint * $point->getY() / ($point->getZ() + $distance) + $this->_size[1]); 70 } 71 72 // }}} 73 // {{{ _sortPolygones() 74 75 /** 76 * Sort polygones 77 * 78 * Sort the polygones depending on their medium depth 79 * 80 * @return void 81 */ 82 protected function _sortPolygones() 83 { 84 $polygoneDepth = array(); 85 foreach ($this->_polygones as $polygon) { 86 $polygoneDepth[] = $polygon->getMidZ(); 87 } 88 89 array_multisort($polygoneDepth, SORT_DESC, SORT_NUMERIC, $this->_polygones); 90 } 91 92 // }}} 93} 94 95// }}} 96