1 files changed, 33 insertions, 0 deletions
diff --git a/Vertex.cpp b/Vertex.cpp
new file mode 100644
index 0000000..a2aefaf
--- /dev/null
+++ b/Vertex.cpp
@@ -0,0 +1,33 @@
+#include "Vertex.h"
+#include <math.h>
+
+double Vertex::distanceSq(const Vertex &v) const {
+  return (x - v.x)*(x - v.x) + (y - v.y)*(y - v.y);
+}
+
+double Vertex::distance(const Vertex &v) const {
+  return sqrt(distanceSq(v));
+}
+
+
+Vertex Vertex::operator+(const Vertex &v) const {
+  return Vertex(x + v.x, y + v.y);
+}
+
+Vertex Vertex::operator-(const Vertex &v) const {
+  return Vertex(x - v.x, y - v.y);
+}
+
+Vertex& Vertex::operator+=(const Vertex &v) {
+  x += v.x;
+  y += v.y;
+  
+  return *this;
+}
+
+Vertex& Vertex::operator-=(const Vertex &v) {
+  x -= v.x;
+  y -= v.y;
+  
+  return *this;
+}