fixed poly

1 files changed, 31 insertions, 0 deletions

diff --git a/Polymorphism/Shapes/Triangle.cpp b/Polymorphism/Shapes/Triangle.cpp
new file mode 100644
index 0000000..545e2a6
--- /dev/null
+++ b/Polymorphism/Shapes/Triangle.cpp
@@ -0,0 +1,31 @@
+#include "Triangle.h"
+
+Triangle::Triangle(int x1, int y1, int x2, int y2, int x3, int y3) : Shape(3)
+{
+	setPoint(x1, y1, 0);
+	setPoint(x2, y2, 1);
+	setPoint(x3, y3, 2);
+}
+
+double Triangle::getArea()
+{
+	double sideA = getPoint(0).getDist(getPoint(1));
+	double sideB = getPoint(1).getDist(getPoint(2));
+	double sideC = getPoint(2).getDist(getPoint(0));
+
+	double halfPer = getPer() / 2;
+
+	return sqrt(halfPer * (halfPer - sideA) *
+		(halfPer - sideB) * (halfPer - sideC));
+}
+double Triangle::getPer()
+{
+	return getPoint(0).getDist(getPoint(1)) +
+		getPoint(1).getDist(getPoint(2)) +
+		getPoint(2).getDist(getPoint(0));
+}
+Shape* Triangle::clone()
+{
+	Triangle* newTriangle = new Triangle(*this);
+	return newTriangle;
+}
\ No newline at end of file