new file mode 100644
--- /dev/null
+++ b/pmc/vector.cc
@@ -0,0 +1,71 @@
+/**
+ * test/demos/pmc/vector.cc
+ * Copyright (C) 2008 Markus Broeker
+ */
+
+#include <cmath>
+#include <vector.h>
+
+#include <cstdio>
+
+Vector::Vector (int xx, int yy)
+{
+    name = "Vector";
+    x = xx;
+    y = yy;
+    mode = RAD;
+
+#ifdef DEBUG
+    fprintf (stderr, "New Vector: (%.3d, %.3d)\n", x, y);
+#endif
+}
+
+Vector::~Vector ()
+{
+#ifdef DEBUG
+    fprintf (stderr, "Bye, bye Vector: (%.3d, %.3d)\n", x, y);
+#endif
+}
+
+int Vector::X ()
+{
+    return x;
+}
+
+int Vector::Y ()
+{
+    return y;
+}
+
+Vector Vector::operator+ (Vector a)
+{
+    return Vector (x + a.X (), y + a.Y ());
+}
+
+Vector Vector::operator- (Vector a)
+{
+    return Vector (x - a.X (), y - a.Y ());
+}
+
+double Vector::abs ()
+{
+    return (std::sqrt (x * x + y * y));
+}
+
+void Vector::vector ()
+{
+    fprintf (stderr, "(%.3d, %.3d)", x, y);
+}
+
+double Vector::angle (Vector v)
+{
+    if (mode == DEG)
+        return ((180.0 / M_PI) * std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));
+
+    return (std::acos ((v.X () * X () + v.Y () * Y ()) / (abs () * v.abs ())));
+}
+
+void Vector::setMode (Mode m)
+{
+    mode = m;
+}