The `Part::Vertex` object has both `Placement`, and `X`, `Y`, `Z`
properties. The net displacement is the sum of both of these two
properties.
Previously, the `PointArray` would only use the `Placement`
which would produce a seemingly erroneous result
because `X`, `Y`, and `Z` would be ignored.
Also perform several improvements such as PEP8 cleanup,
write complete docstring, type checking of the input arguments,
accepting a full placement to modify the position,
and deprecating the older call.
Update the Gui Command as well.
`PathObj` becomes `PathObject`, `Xlate` becomes `ExtraTranslation`,
and `PathSubs` becomes `PathSubelements`.
Update `make_path_array` function and the Gui Command.
Certain properties do not need to be shown in the property editor
when a particular `AlignMode` is chosen. This keeps the number
of properties displayed organized and easy to manage.
Return early from the `execute` method if no base or path exist.
Add method `get_wires` which internally uses `get_wire_from_subelements`
(renamed method), to get the edges from the path object,
and its subelements, if any. If no wires are found
return early from `execute`.
The final rotation applied to the copies will be the base rotation
of the base object's shape. The only exception is when the
`AlignMode` is `'Tangent'`; in this case, it performs
a pre-rotation with the `TangentVector`.
Test the inputs to the `make_path_array` function
and return `None` if there is a problem.
Now the make function accepts as input a `"String"` which must be
the `Label` of an object in the document, so it is easier to create
arrays quickly from the Python console.
Add the new parameters to the make function, `align_mode`,
`tan_vector`, `force_vertical`, and `vertical_vector`.
These properties were added to the proxy object in 0db11da9cf.
Add message deprecating the older call `makePathArray`.
Adjust the GuiCommand accordingly. Now it uses the commit
mechanism of the parent `Modifier` class so that the executed
functions are recorded in the Python console.
Clean up the `PathArray` class as well.
