mirror of https://github.com/CGAL/cgal
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
// Copyright (c) 2005 Stanford University (USA).
|
|
// 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; either version 3 of the License,
|
|
// or (at your option) any later version.
|
|
//
|
|
// 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.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
//
|
|
//
|
|
// Author(s) : Daniel Russel <drussel@alumni.princeton.edu>
|
|
|
|
#ifndef CGAL_KINETIC_TO_STATIC_H
|
|
#define CGAL_KINETIC_TO_STATIC_H
|
|
#include <CGAL/Kinetic/basic.h>
|
|
#include <CGAL/Simple_cartesian.h>
|
|
|
|
namespace CGAL { namespace Kinetic {
|
|
|
|
//! a functor that turns a moving object into a static object. It needs to pick the static type.
|
|
/*! This is the default implementation which looks for a class named
|
|
Static_traits in the moving object type (the first template
|
|
argument) and uses the Static_type field of that traits when
|
|
instantiated with the static kernel to figure out the return
|
|
type. It then calls the to_static member method of the class.
|
|
*/
|
|
template <class Arg,
|
|
class SK >
|
|
class To_static
|
|
{
|
|
typedef typename Arg::template Static_traits<SK> Traits;
|
|
public:
|
|
//! The way time is represented.
|
|
typedef typename SK::FT Time;
|
|
|
|
//! Construct it with a static kernel
|
|
To_static(const SK &sk=SK()): sk_(sk), t_(-666666666) {
|
|
#ifndef NDEBUG
|
|
initialized_=false;
|
|
#endif
|
|
}
|
|
|
|
typedef typename Traits::Static_type result_type;
|
|
typedef Arg argument_type;
|
|
//! Convert an appropriate moving object to a static object
|
|
result_type operator()(const argument_type &arg) const
|
|
{
|
|
#ifndef NDEBUG
|
|
if (!initialized_) {
|
|
std::cerr << "You must set time before using a snapshot.\n";
|
|
CGAL_precondition(initialized_);
|
|
}
|
|
#endif
|
|
return Traits::to_static(arg, time(), sk_);
|
|
}
|
|
//! What this believes the time to be.
|
|
const Time& time() const
|
|
{
|
|
/*#ifndef NDEBUG
|
|
if (!initialized_) {
|
|
std::cerr << "You must set time before using a snapshot.\n";
|
|
CGAL_precondition(initialized_);
|
|
}
|
|
#endif */
|
|
return t_;
|
|
}
|
|
//! Set the time.
|
|
void set_time(const Time &t) {
|
|
t_=t;
|
|
#ifndef NDEBUG
|
|
initialized_=true;
|
|
#endif
|
|
}
|
|
protected:
|
|
SK sk_;
|
|
Time t_;
|
|
#ifndef NDEBUG
|
|
bool initialized_;
|
|
#endif
|
|
};
|
|
} } //namespace CGAL::Kinetic
|
|
#endif
|