toxic: ray.inl Source File

00001 /*
00002     toxic - A Global Illumination Renderer
00003     Copyright (C) 2003-2004 Francois Beaune
00004     Contact: http://toxicengine.sourceforge.net/
00005 
00006     This file is part of toxic.
00007 
00008     toxic is free software; you can redistribute it and/or modify
00009     it under the terms of the GNU General Public License as published by
00010     the Free Software Foundation; either version 2 of the License, or
00011     (at your option) any later version.
00012 
00013     toxic is distributed in the hope that it will be useful,
00014     but WITHOUT ANY WARRANTY; without even the implied warranty of
00015     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016     GNU General Public License for more details.
00017 
00018     You should have received a copy of the GNU General Public License
00019     along with toxic; if not, write to the Free Software
00020     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00021 */
00022 
00023 inline
00024 Ray::Ray(Type type) :
00025     m_type(type),
00026     m_id(m_next_id++) {}
00027 
00028 inline
00029 Ray::Ray(const Ray &r) :
00030     m_type(r.m_type),
00031     m_id(m_next_id++),
00032     m_origin(r.m_origin),
00033     m_direction(r.m_direction) {}
00034 
00035 inline
00036 Ray::Ray(Type type, const sheep::Point3 &origin, const sheep::Vector3 &direction) :
00037     m_type(type),
00038     m_id(m_next_id++),
00039     m_origin(origin),
00040     m_direction(direction) {}
00041 
00042 inline
00043 Ray::Type Ray::GetType() const {
00044     return m_type;
00045 }
00046 
00047 inline
00048 int Ray::GetInvalidId() {
00049     return -1;
00050 }
00051 
00052 inline
00053 int Ray::GetId() const {
00054     return m_id;
00055 }
00056 
00057 inline
00058 void Ray::NewId() {
00059     m_id = m_next_id++;
00060 }
00061 
00062 inline
00063 sheep::Point3 Ray::GetPointAt(sheep::Real t) const {
00064     assert(t >= 0.0);
00065 
00066     return m_origin + t * m_direction;
00067 }