segment_funcs.h

// segment_funcs.h (line segment implementation)
//
//  The WorldForge Project
//  Copyright (C) 2000, 2001  The WorldForge Project
//
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// Author: Ron Steinke
 
#ifndef WFMATH_SEGMENT_FUNCS_H
#define WFMATH_SEGMENT_FUNCS_H
 
#include <wfmath/segment.h>
 
#include <cassert>
 
namespace WFMath {
 
template<int dim>
inline Segment<dim>& Segment<dim>::moveCornerTo(const Point<dim>& p, size_t corner)
{
  assert(corner == 0 || corner == 1);
 
  Vector<dim> diff = m_p2 - m_p1;
 
  if(!corner) {
    m_p1 = p;
    m_p2 = p + diff;
  }
  else {
    m_p2 = p;
    m_p1 = p - diff;
  }
 
  return *this;
}
 
template<int dim>
inline Segment<dim>& Segment<dim>::rotateCorner(const RotMatrix<dim>& m, size_t corner)
{
  assert(corner == 0 || corner == 1);
 
  if(corner)
    m_p1.rotate(m, m_p2);
  else
    m_p2.rotate(m, m_p1);
 
  return *this;
}
 
template<>
inline Segment<3>& Segment<3>::rotateCorner(const Quaternion& q, size_t corner)
{
  assert(corner == 0 || corner == 1);
 
  if(corner)
    m_p1.rotate(q, m_p2);
  else
    m_p2.rotate(q, m_p1);
 
  return *this;
}
 
} // namespace WFMath
 
#endif  // WFMATH_SEGMENT_FUNCS_H