Hi,

you can set the length by providing the start_hook and end_hook arguments with values higher than 0:

• When the values are higher than 0, they are understood as the desired length of the hook
  
• When the values are equal to 0, the hook length is calculated based on the current reinforcement standard
  
• When the values are equal to -1, no hook is created
  

Here's an example of a definition of a longitudinal rebar 6m long, with 15 cm hooks:

create_longitudinal_shape_with_user_hooks(
    length = 6000,
    model_angles = RotationAngles(0,0,0),
    shape_props = shape_props,
    concrete_cover_props = ConcreteCoverProperties.all(30),
    start_hook = 150.0,
    end_hook = 150.0,
) -> BendingShape

If you find a feature badly documented in 2024 Version, give it a try and have a look on 2025 version - many of the functions (but not all yet) are documented better there. This is the case with this function.

Also please give us feedback on good/bad documented functions/classes/feature by clicking the thumbs up/down at the bottom of the page. We can focus on things that matters.

Best,
Bart