mirror of
https://github.com/boostorg/graph.git
synced 2025-05-10 07:23:58 +00:00
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
//=======================================================================
|
|
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
|
|
//
|
|
// This file is part of the Boost Graph Library
|
|
//
|
|
// You should have received a copy of the License Agreement for the
|
|
// Boost Graph Library along with the software; see the file LICENSE.
|
|
// If not, contact Office of Research, Indiana University,
|
|
// Bloomington, IN 47405.
|
|
//
|
|
// Permission to modify the code and to distribute the code is
|
|
// granted, provided the text of this NOTICE is retained, a notice if
|
|
// the code was modified is included with the above COPYRIGHT NOTICE
|
|
// and with the COPYRIGHT NOTICE in the LICENSE file, and that the
|
|
// LICENSE file is distributed with the modified code.
|
|
//
|
|
// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
|
|
// By way of example, but not limitation, Licensor MAKES NO
|
|
// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
|
|
// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
|
|
// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
|
|
// OR OTHER RIGHTS.
|
|
//=======================================================================
|
|
#include <string>
|
|
#include <iostream>
|
|
|
|
class Point
|
|
{
|
|
public:
|
|
virtual bool equal(const Point * p) const = 0;
|
|
};
|
|
|
|
class ColorPoint:public Point
|
|
{
|
|
public:
|
|
ColorPoint(float x, float y, std::string c):x(x), y(y), color(c)
|
|
{
|
|
}
|
|
virtual bool equal(const ColorPoint * p) const
|
|
{
|
|
return color == p->color && x == p->x && y == p->y;
|
|
}
|
|
protected:
|
|
float x, y;
|
|
std::string color;
|
|
};
|
|
|
|
class ColorPoint2:public Point
|
|
{
|
|
public:
|
|
ColorPoint2(float x, float y, std::string s):x(x), y(y), color(s)
|
|
{
|
|
}
|
|
virtual bool equal(const Point * p) const
|
|
{
|
|
const ColorPoint2 *cp = dynamic_cast < const ColorPoint2 * >(p);
|
|
return color == cp->color && x == cp->x && y == cp->y;
|
|
}
|
|
protected:
|
|
float x, y;
|
|
std::string color;
|
|
};
|
|
|
|
void
|
|
print_equal(const Point * a, const Point * b)
|
|
{
|
|
std::cout << std::boolalpha << a->equal(b) << std::endl;
|
|
}
|
|
|
|
template < typename PointType > void
|
|
print_equal2(const PointType * a, const PointType * b)
|
|
{
|
|
std::cout << std::boolalpha << a->equal(b) << std::endl;
|
|
}
|
|
|
|
|
|
int
|
|
main()
|
|
{
|
|
Point *p = new ColorPoint2(0.0, 0.0, "blue");
|
|
Point *q = new ColorPoint2(0.0, 0.0, "green");
|
|
print_equal(p, q);
|
|
ColorPoint *a = new ColorPoint(0.0, 0.0, "blue");
|
|
ColorPoint *b = new ColorPoint(0.0, 0.0, "green");
|
|
print_equal2(a, b);
|
|
|
|
|
|
return 0;
|
|
}
|