wzfunction.hxx

来自「Delaunay三角形的网格剖分程序」· HXX 代码 · 共 81 行

#ifndef wzfunction_hxx
#define wzfunction_hxx

#ifndef wzpoint_hxx
#include "wzpoint.hxx"
#endif

class   wzPointToFloat;
class   wzPointToSegment;
class   wzPointToIndex;
class   wzPointToPoint;

// the following classes are abstract classes. They are designed so
// that behind a given class which looks like a function something
// very complex may be hidden:

class wzPointToFloat{
public:
  virtual wzFloat operator()(const wzPoint& p) const=0;
  wzFloat call(const wzPoint& p) const {return operator()(p);}
};

class wzPointToIndex{
public:
  virtual wzIndex operator()(const wzPoint& p) const=0;
  wzIndex call(const wzPoint& p) const {return operator()(p);}
};

class wzPointToSegment{
public:
  virtual wzSegment operator()(const wzPoint& p) const=0;
  wzSegment call(const wzPoint& p) const {return operator()(p);}
};

class wzPointToPoint{
public:
  virtual void operator()(wzPoint& p, const wzPoint& pold) const=0;
  void call(wzPoint& p, const wzPoint& o) const {operator()(p,o);}
};

// The following classes are the simplest implementations, using the
// relevant standard C function types:

class wzSimplePointToFloat:
  public wzPointToFloat
{
  wzFloat (*f)(const wzPoint& p);
public:
  virtual wzFloat operator()(const wzPoint& p) const {return (*f)(p);}
  wzSimplePointToFloat(wzFloat (*func)(const wzPoint& p)):f(func){;}
};

class wzSimplePointToIndex:
  public wzPointToIndex
{
  wzIndex (*f)(const wzPoint& p);
public:
  virtual wzIndex operator()(const wzPoint& p) const {return (*f)(p);}
  wzSimplePointToIndex(wzIndex (*func)(const wzPoint& p)):f(func){;}
};

class wzSimplePointToSegment:
  public wzPointToSegment
{
  wzSegment (*f)(const wzPoint& p);
public:
  virtual wzSegment operator()(const wzPoint& p) const {return (*f)(p);}
  wzSimplePointToSegment(wzSegment (*func)(const wzPoint& p)):f(func){;}
};

class wzSimplePointToPoint:
  public wzPointToPoint
{
  void (*f)(wzPoint& p, const wzPoint& o);
public:
  virtual void operator()(wzPoint& p, const wzPoint& o) const {(*f)(p,o);}
  wzSimplePointToPoint(void (*func)(wzPoint& p, const wzPoint& o)):f(func){;}
};

#endif