World/Sphere.hh

   1 /**********************************************************************
   2  * blaRAY -- photon mapper/raytracer
   3  * (C) 2008 by Tomasz bla Fortuna <bla@thera.be>, <bla@af.gliwice.pl>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * any later version.
   9  *
  10  * See Docs/LICENSE
  11  *********************/
  12
  13 #ifndef _SPHERE_H_
  14 #define _SPHERE_H_
  15
  16 #include <iostream>
  17 #include <string>
  18
  19 #include "World/Object.hh"
  20
  21 namespace World {
  22         /** \brief
  23          *      Mathematical sphere (ball rather)
  24          *
  25          * Implements collisions, UV coordinates and normal
  26          * calculations for spheres.
  27          */
  28         class Sphere : public Object {
  29         protected:
  30                 /** Sphere center */
  31                 Math::Vector Center;
  32
  33                 /** Sphere radius */
  34                 Double Radius;
  35
  36                 virtual std::string Dump() const;
  37         public:
  38                 /** Construct sphere object */
  39                 Sphere(const Math::Vector &Center,
  40                        Double Radius,
  41                        const Material &M = MatLib::Red(),
  42                        Bool Visible = true)
  43                         : Object(M, Visible),
  44                           Center(Center), Radius(Radius)
  45                 {
  46                 }
  47
  48                 virtual Bool Collide(const Render::Ray &R, Double &RayPos) const;
  49                 virtual Math::Vector NormalAt(const Math::Vector &Point) const;
  50                 virtual Math::Point UVAt(const Math::Vector &Point) const;
  51
  52         };
  53 };
  54
  55 #endif