Python function for Union

[orxshi]

What is the python function for Part -> Union? I managed to union/fuse two shells in GUI but cannot find corresponding python function?

[chrisb]

The function is Fusion. Most commands are logged in Python console, so it's always worth a try to do something from the GUI while watching the console.

[orxshi]

But Python complains that

module 'Part' has no attribute 'Fusion'

It also complains if I try MultiFuse instead of Fusion

[chrisb]

Sorry for being short/wrong. Let's assume you have a Box and a Cylinder in your document. Then you can do the following:

Code: Select all

doc = App.ActiveDocument
doc.addObject("Part::MultiFuse","Fusion")
doc.Fusion.Shapes = [doc.Box,doc.Cylinder]

[vocx]

What is the python function for Part -> Union? I managed to union/fuse two shells in GUI but cannot find corresponding python function?

Keep the Python console open. Then perform the actions that you want in the graphical interface, that is, grab two objects, and press Part_Union. You will see the commands that produce that object recorded in the Python console. Now you can take that code and adapt it to your needs. This is what chrisb did. It's the same process that is done when you record macros.

It's the best way to learn Python scripting with FreeCAD. Just perform operations with the buttons, see the generated code, and then repeat those same steps.

[DeepSOIC]

in python, it's more commonly needed to operate on shapes, without creating an object in a project for every step. Then, use fuse method of Part.Shape objects :

Code: Select all

sh1 = Part.makeCylinder(10,3)
sh2 = Part.makeSphere(5)
fused = sh1.fuse(sh2)
Part.show(fused)

If you do want to have every step as a project object, as if you made it all in GUI, see chrisb's answer above. Just watch and bend what you see printed to py console when you do the gui stuff.

[freedman]

Since we are on this topic, could you add either approach for a loft. I can't get the correct keywords.
Thank you