Added vector2.

matrix/Vector3.hpp

@@ -20,6 +20,9 @@ template<typename Type>
 class Vector3 : public Vector<Type, 3>
 {
 public:
+
+    typedef Matrix<Type, 3, 1> Matrix31;
+
     virtual ~Vector3() {};
 
     Vector3() :
@@ -27,12 +30,7 @@ public:
     {
     }
 
-    Vector3(const Vector<Type, 3> & other) :
-        Vector<Type, 3>(other)
-    {
-    }
-
-    Vector3(const Matrix<Type, 3, 1> & other) :
+    Vector3(const Matrix31 & other) :
         Vector<Type, 3>(other)
     {
     }
@@ -50,14 +48,19 @@ public:
         v(2) = z;
     }
 
-    Vector3 cross(const Vector3 & b)  const {
+    Vector3 cross(const Matrix31 & b)  const {
         const Vector3 &a(*this);
         Vector3 c;
-        c(0) = a(1)*b(2) - a(2)*b(1);
-        c(1) = -a(0)*b(2) + a(2)*b(0);
-        c(2) = a(0)*b(1) - a(1)*b(0);
+        c(0) = a(1)*b(2,0) - a(2)*b(1,0);
+        c(1) = -a(0)*b(2,0) + a(2)*b(0,0);
+        c(2) = a(0)*b(1,0) - a(1)*b(0,0);
         return c;
     }
+
+    Vector3 operator%(const Matrix31 & b) const {
+        return (*this).cross(b);
+    }
+
 };
 
 typedef Vector3<float> Vector3f;