Translation doesn't work on existing objects

[edmundsj]

It looks like if I create a cube and then attempt to translate it, it doesn't do anything (I still have the same cube):

my_cube = ops.Cube([10, 10, 10])
my_cube.translate([0, 0, 50])

But if I do it in one step, then it renders correctly:

my_cube = ops.Cube([10, 10, 10]).tranlate([0, 0, 50])

Is there a reason for this behavior? Is it dramatically easier to implement? This seems to break my intuition about how to use OOP. It also just leads to ugly-long lines of code.

[edmundsj]

Nope, it doesn't break my intuition, because this works just fine:

my_cube = ops.Cube([10, 10, 10])
my_cube = my_cube.translate([0, 0, 50])

Can you state somewhere that the transformations return the modified object, but do not modify it in place? This wasn't clear from the README. Additional API documentation would be very helpful. It's a neat module!