Source for file Cone.php

<?php
 
require_once('Image/3D/Paintable/Object.php');
 
class Image_3D_Object_Cone extends Image_3D_Object {
    
    public function __construct($parameter) {
        parent::__construct();
 
        $radius = 1;
        $height = 1;
        $detail = max(3, (int) $parameter['detail']);
 
        // Generate points according to parameters
        $top = new Image_3D_Point(0, $height, 0);
        $bottom = new Image_3D_Point(0, 0, 0);
 
        $last = new Image_3D_Point(1, 0, 0);
        $points[] = $last;
 
        for ($i = 1; $i <= $detail; ++$i) {
            $actual = new Image_3D_Point(cos(deg2rad(360 * $i / $detail)), 0, sin(deg2rad(360 * $i / $detail)));
            $points[] = $actual;
            
            // Build polygon
            $this->_addPolygon(new Image_3D_Polygon($top, $last, $actual));
            $this->_addPolygon(new Image_3D_Polygon($bottom, $last, $actual));
            $last = $actual;
        }
 
        // Build closing polygon
        $this->_addPolygon(new Image_3D_Polygon($top, $last, $points[0]));
        $this->_addPolygon(new Image_3D_Polygon($bottom, $last, $points[0]));
    }
}