def _get_axes_vectors(self):
"""calculate the model vectors along the screen's x and y axes"""
# The "up" vector defines, in what proportion each axis of the model is
# in line with the screen's y axis.
v_up = self.view["up"]
factors_y = (number(v_up[0]), number(v_up[1]), number(v_up[2]))
# Calculate the proportion of each model axis according to the x axis of
# the screen.
distv = self.view["distance"]
distv = Point(distv[0], distv[1], distv[2]).normalized()
factors_x = distv.cross(Point(v_up[0], v_up[1], v_up[2])).normalized()
factors_x = (factors_x.x, factors_x.y, factors_x.z)
return (factors_x, factors_y)
def _get_axes_vectors(self):
"""calculate the model vectors along the screen's x and y axes"""
# The "up" vector defines, in what proportion each axis of the model is
# in line with the screen's y axis.
v_up = self.view["up"]
factors_y = (number(v_up[0]), number(v_up[1]), number(v_up[2]))
# Calculate the proportion of each model axis according to the x axis of
# the screen.
distv = self.view["distance"]
distv = Point(distv[0], distv[1], distv[2]).normalized()
factors_x = distv.cross(Point(v_up[0], v_up[1], v_up[2])).normalized()
factors_x = (factors_x.x, factors_x.y, factors_x.z)
return (factors_x, factors_y)
