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#pragma once
#include <iostream>
class Shape // Abstract class - no instances of Shape are allowed!
{
protected:
struct point
{
point() :x(0), y(0){}
point(int x, int y) :x(x), y(y){}
int x;
int y;
double getDist(const point& other) const
{
int dx = x - other.x;
int dy = y - other.y;
return sqrt(dx*dx + dy*dy);
}
};
const point& getPointAtIndex(size_t index) const;
private:
point* points;
size_t pointsCount;
void copyFrom(const Shape& other);
void free();
public:
Shape(size_t pointsCount);
Shape(const Shape& other);
Shape& operator=(const Shape& other);
virtual ~Shape(); //!!!!!!
void setPoint(size_t pointIndex, int x, int y);
virtual double getArea() const = 0; //pure virtual
virtual double getPer() const = 0; // pure virtual
};
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