def calc_pos_from_E(self, E):
#todo: can optimise this a lot
r = self.calc_r_from_E(E)
v = self.calc_true_anomaly(E)
angle_sum = self.arg_per + v
x = Vector3.X()
n_dir = x.rotate(Rotation.aroundZ(self.long_asc))
h_dir = self.h_vec.norm()
r_dir = n_dir.rotate(Rotation.aroundVector(h_dir, v))
r_vec = r_dir.fmul(self.calc_r_from_E(E))
r_vec = r_vec.rotate(Rotation.aroundVector(h_dir, self.arg_per))
return r_vec
def calc_pos_from_E(self, E):
#todo: can optimise this a lot
r = self.calc_r_from_E(E)
v = self.calc_true_anomaly(E)
angle_sum = self.arg_per + v
x = Vector3.X()
n_dir = x.rotate(Rotation.aroundZ(self.long_asc))
h_dir = self.h_vec.norm()
r_dir = n_dir.rotate(Rotation.aroundVector(h_dir, v))
r_vec = r_dir.fmul(self.calc_r_from_E(E))
r_vec = r_vec.rotate(Rotation.aroundVector(h_dir, self.arg_per))
return r_vec
