mirror of https://github.com/CGAL/cgal
151 lines
4.5 KiB
C++
151 lines
4.5 KiB
C++
// Copyright (c) 2000 Utrecht University (The Netherlands),
|
|
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
|
|
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
|
|
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
|
|
// and Tel-Aviv University (Israel). All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; version 2.1 of the License.
|
|
// See the file LICENSE.LGPL distributed with CGAL.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $Source$
|
|
// $Revision$ $Date$
|
|
// $Name$
|
|
//
|
|
// Author(s) : Herve Bronnimann
|
|
|
|
#ifndef CGAL_CARTESIAN_SCALING_REP_3_H
|
|
#define CGAL_CARTESIAN_SCALING_REP_3_H
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
template < class R >
|
|
class Scaling_repC3 : public Aff_transformation_rep_baseC3<R>
|
|
{
|
|
friend class Aff_transformation_repC3<R>;
|
|
friend class Translation_repC3<R>;
|
|
|
|
public:
|
|
typedef typename R::FT FT;
|
|
typedef Aff_transformation_rep_baseC3<R> Transformation_base_3;
|
|
typedef Aff_transformation_repC3<R> Transformation_3;
|
|
typedef Translation_repC3<R> Translation_3;
|
|
typedef Scaling_repC3<R> Scaling_3;
|
|
typedef typename Transformation_base_3::Point_3 Point_3;
|
|
typedef typename Transformation_base_3::Vector_3 Vector_3;
|
|
typedef typename Transformation_base_3::Direction_3 Direction_3;
|
|
typedef typename Transformation_base_3::Aff_transformation_3
|
|
Aff_transformation_3;
|
|
|
|
Scaling_repC3() {}
|
|
Scaling_repC3(const FT &s) : scalefactor_(s) {}
|
|
virtual ~Scaling_repC3() {}
|
|
|
|
virtual Point_3 transform(const Point_3 &p) const
|
|
{
|
|
return Point_3(scalefactor_ * p.x(),
|
|
scalefactor_ * p.y(),
|
|
scalefactor_ * p.z());
|
|
}
|
|
|
|
virtual Vector_3 transform(const Vector_3 &v) const
|
|
{
|
|
return Vector_3(scalefactor_ * v.x(), scalefactor_ * v.y(),
|
|
scalefactor_ * v.z());
|
|
}
|
|
|
|
virtual Direction_3 transform(const Direction_3 &d) const
|
|
{
|
|
return d;
|
|
}
|
|
|
|
virtual Aff_transformation_3 operator*(const Transformation_base_3 &t) const
|
|
{
|
|
return t.compose(*this);
|
|
}
|
|
|
|
virtual Aff_transformation_3 compose(const Transformation_3 &t) const
|
|
{
|
|
return Aff_transformation_3(scalefactor_ * t.t11,
|
|
scalefactor_ * t.t12,
|
|
scalefactor_ * t.t13,
|
|
t.t14,
|
|
|
|
scalefactor_ * t.t21,
|
|
scalefactor_ * t.t22,
|
|
scalefactor_ * t.t23,
|
|
t.t24,
|
|
|
|
scalefactor_ * t.t31,
|
|
scalefactor_ * t.t32,
|
|
scalefactor_ * t.t33,
|
|
t.t34);
|
|
}
|
|
|
|
virtual Aff_transformation_3 compose(const Translation_3 &t) const
|
|
{
|
|
FT ft0(0);
|
|
return Aff_transformation_3(scalefactor_,
|
|
ft0,
|
|
ft0,
|
|
t.translationvector_.x(),
|
|
|
|
ft0,
|
|
scalefactor_,
|
|
ft0,
|
|
t.translationvector_.y(),
|
|
|
|
ft0,
|
|
ft0,
|
|
scalefactor_,
|
|
t.translationvector_.z());
|
|
}
|
|
|
|
virtual Aff_transformation_3 compose(const Scaling_3 &t) const
|
|
{
|
|
return Aff_transformation_3(SCALING, scalefactor_*t.scalefactor_);
|
|
}
|
|
|
|
virtual Aff_transformation_3 inverse() const
|
|
{
|
|
return Aff_transformation_3(SCALING, FT(1)/scalefactor_);
|
|
}
|
|
|
|
virtual Aff_transformation_3 transpose() const
|
|
{
|
|
return Aff_transformation_3(SCALING, scalefactor_);
|
|
}
|
|
|
|
virtual bool is_even() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
virtual FT cartesian(int i, int j) const
|
|
{
|
|
if (i!=j) return FT(0);
|
|
if (i==3) return FT(1);
|
|
return scalefactor_;
|
|
}
|
|
|
|
virtual std::ostream &print(std::ostream &os) const
|
|
{
|
|
os << "Aff_transformationC3(" << scalefactor_ << ")";
|
|
return os;
|
|
}
|
|
|
|
private:
|
|
FT scalefactor_;
|
|
};
|
|
|
|
CGAL_END_NAMESPACE
|
|
|
|
#endif // CGAL_CARTESIAN_SCALING_REP_3_H
|