>>> from vec3D import Vec3D

--ini-coords

>>> v = Vec3D(1, 2, 3)
>>> (v.x, v.y, v.z)
(1, 2, 3)
>>> (v[0], v[1], v[2])
(1, 2, 3)

--fi-coords

>>> v
Vec3D(1.00, 2.00, 3.00)
>>> str(v)
'(1.0, 2.0, 3.0)'
>>> round(v.norma(), 4)
3.7417
>>> u = v.normalitza()
>>> u
Vec3D(0.27, 0.53, 0.80)
>>> round(u.norma(), 4)
1.0

--ini-compara
>>> v = Vec3D(1, 2, 3)
>>> v1 = Vec3D(1., 2., 3.)
>>> v1 == v
True
>>> v2 = Vec3D(1.00001, 2, 3)
>>> v2 == v
False
>>> v3 = Vec3D(1.000001, 2, 3)
>>> v3 == v
True

--fi-compara

>>> v3 != v
False
>>> v> u
True
>>> v>= u
True
>>> u < v
True
>>> u <= v
True

--ini-copia
>>> u = Vec3D(0.27, 0.53, 0.80)
>>> w = u
>>> w
Vec3D(0.27, 0.53, 0.80)
>>> w.x = 9
>>> w
Vec3D(9.00, 0.53, 0.80)
>>> u
Vec3D(9.00, 0.53, 0.80)
>>> from copy import copy
>>> u = copy(w)
>>> u.z = 32
>>> u
Vec3D(9.00, 0.53, 32.00)
>>> w
Vec3D(9.00, 0.53, 0.80)

--fi-copia

--ini-opera
>>> v1 = Vec3D(1, 3, -0.806)
>>> -v1
Vec3D(-1.00, -3.00, 0.81)
>>> v1-v1
Vec3D(0.00, 0.00, 0.00)
>>> v1+v1
Vec3D(2.00, 6.00, -1.61)
>>> 3*v1
Vec3D(3.00, 9.00, -2.42)


--fi-opera
>>> --v1
Vec3D(1.00, 3.00, -0.81)
>>> v1 == --v1
True
>>> round(v1*v1, 2)
10.65
>>> u = Vec3D(0, 0, 0)
>>> u*v1
0.0