Handle modification

If handles are created in an interactor PythonPart, the class HandleModificationService can be used to implement the handle processing.

The service can be created like

handle_modi_service = HandleModificationService(coord_input, build_ele_list, control_props_list)

Depending on an defined input mode, the HandleModificationService can be used for the selection and modification of the handles as follows

if input_mode == InputMode.RefPoint:
    input_pnt = coord_input.GetInputPoint(mouse_msg, pnt, msg_info).GetPoint()

    ...

#----------------- Select a handle

else:
    result = handle_modi_service.process_mouse_msg(mouse_msg, pnt, msg_info)

In the member function process_mouse_msg the selection and modification of the handle is executed and the value of the assigned property is checked and updated.

The complete documentation of the members from the HandleModificationService class can be found here:

• class HandleModificationService

A full implementation of the HandleModificationService processing, including how to start and stop the handle input, is given in the files

…\etc\Examples\PythonParts\InteractorExamplesGeneral\HandleUsageInInteractor.pyp

…\etc\PythonPartsExampleScripts\InteractorExamplesGeneral\HandleUsageInInteractor.py