/*
 * PVVMUD a 3D MUD
 * Copyright (C) 1998-1999  Programvareverkstedet (pvv@pvv.org)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include "pvvmud.H"
#include "beam.H"


CBeam::CBeam(){
}

CBeam::CBeam(const CVector & point,const CVector & direction){
  m_point = point;
  m_direction = direction;
}

CBeam::CBeam(const CVertex & point,const CVector & direction){
  m_point = CVector(point.getX(),point.getY(),point.getZ());
  m_direction = direction;
}

CBeam::CBeam(const CPosition & point,const CVector & direction){
  m_point = CVector(point.getX(),point.getY(),point.getZ());
  m_direction = direction;
}

const CVector & CBeam::getPoint() const{
  return m_point;
}
const CVector & CBeam::getDirection() const{
  return m_direction;
}

CBeam CBeam::operator+ (const CPosition& position) const{
  CBeam result;
  result = *this;
  CVector pos(position.getX(),position.getY(),position.getZ());
  result.m_point += pos; 
  return result;
}

void CBeam::transform(const CMatrix & transformation){
  CVector p2 = m_point + m_direction;
  m_point.transform(transformation);
  p2.transform(transformation);
  m_direction = p2 - m_point;
}

///////////////////////////////////////////////////////////////////////////////
// CBeam::intersect
// Info          : Check intersection between beam and a bBox
// Return        : Return true if beam intersect with bBox
// Implementation: HACK only check if point inside in XY plane
///////////////////////////////////////////////////////////////////////////////
int CBeam::intersect(const CBBox & bBox) const {
//  cdebug << "CBeam::intersect : Hack impl.\n";
  return  bBox.insideXY(m_point);
}

ostream& operator<<(ostream&s,const CBeam& b){
  return s << "( P: " << b.getPoint() << ", D: " << b.getDirection() << " )";
}