From eda2b5dee821c474644cd72df4d0bd93b0940ec6 Mon Sep 17 00:00:00 2001
From: angeld55 <angel_dimitriev@abv.bg>
Date: Tue, 17 May 2022 20:15:26 +0300
Subject: sem 12

---
 Sem. 12/Example_polymorphism/Shape.cpp | 52 ++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Sem. 12/Example_polymorphism/Shape.cpp

(limited to 'Sem. 12/Example_polymorphism/Shape.cpp')

diff --git a/Sem. 12/Example_polymorphism/Shape.cpp b/Sem. 12/Example_polymorphism/Shape.cpp
new file mode 100644
index 0000000..27bb9e9
--- /dev/null
+++ b/Sem. 12/Example_polymorphism/Shape.cpp	
@@ -0,0 +1,52 @@
+#include "Shape.h"
+
+Shape::Shape(size_t pointsCount) : pointsCount(pointsCount)
+{
+	points = new point[pointsCount]; // [0,0], [0,0]....
+}
+
+void Shape::copyFrom(const Shape& other)
+{
+	points = new point[other.pointsCount];
+
+	for (int i = 0; i < other.pointsCount; i++)
+		points[i] = other.points[i];
+}
+void Shape::free()
+{
+	delete[] points;
+}
+
+Shape::Shape(const Shape& other)
+{
+	copyFrom(other);
+}
+Shape& Shape::operator= (const Shape& other)
+{
+	if (this != &other)
+	{
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+Shape::~Shape()
+{
+	free();
+}
+
+const Shape::point& Shape::getPointAtIndex(size_t index) const
+{
+	if (index >= pointsCount)
+		throw std::exception("Invalid point index!");
+
+	return  points[index];
+}
+
+void Shape::setPoint(size_t pointIndex, int x, int y)
+{
+	if (pointIndex >= pointsCount)
+		throw std::exception("Invalid point index!");
+
+	points[pointIndex] = point(x, y);
+}
-- 
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