class to handle Vector operation.
For example, if you want to get length of a vector:
>>> from kivy.vector import Vector
>>> v = Vector(1, 5)
>>> print v.length()
Bases: list
Represents a 2D vector.
Computes the angle between a and b
Returns the distance between two points.
Returns the distance between two points squared.
Computes the dot product of a and b
Return a true if point is in bbox defined by a and b
Returns the length of a vector
Returns the length of a vector squared.
Finds the intersection point between the lines (1)v1->v2 and (2)v3->v4 and returns it as a vector object
For math see: http://en.wikipedia.org/wiki/Line-line_intersection
Returns a new vector that has the same direction as vec, but has a length of one.
Rotate the vector