code: def from_two_vectors(self, vec1, vec2):
          '''get a rotation matrix from two vectors.
             This returns a rotation matrix which when applied to vec1
             will produce a vector pointing in the same direction as vec2'''
          angle = vec1.angle(vec2)
          cross = vec1 % vec2
          if cross.length() == 0:
              # the two vectors are colinear
              return self.from_euler(0,0,angle)
          cross.normalize()
          return self.from_axis_angle(cross, anglef from_two_vectors(self, vec1, vec2):
          '''get a rotation matrix from two vectors.
             This returns a rotation matrix which when applied to vec1
             will produce a vector pointing in the same direction as vec2'''
          angle = vec1.angle(vec2)
          cross = vec1 % vec2
          if cross.length() == 0:
              # the two vectors are colinear
              return self.from_euler(0,0,angle)
          cross.normalize()
          return self.from_axis_angle(cross, angle)
docs: get a rotation matrix from two vectors.
             This returns a rotation matrix which when applied to vec1
             will produce a vector pointing in the same direction as vec2