topic Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends in Fusion API and Scripts Forum

[CRASH] - component.flatPattern.bendLinesBody on component with no bends

gvisca44 — Tue, 24 Jan 2023 03:46:41 GMT

Was in the process of writing add-in that processes sheet metal components.

Found that component.flatPattern.bendLinesBody and component.flatPattern.extentLinesBody against a component with no bends causes crash. Seems like component.flatPattern.bodies also causes a crash.

Crash report 336849264 sent.

Glenn.

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

BrianEkins — Tue, 24 Jan 2023 05:52:03 GMT

A crash is never good, and even when you do something wrong, the API should fail and never crash. However, I created a very simple test case where I made a new design that contained a sheet metal part, inserted it into a new design, and then used the API to call the bendLinesBody property. I'm not seeing a crash, and it returns the body, so there must be something else that's causing it to crash. Can you post a test case and the code that reproduces the crash?

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

gvisca44 — Tue, 24 Jan 2023 06:18:45 GMT

Will do @BrianEkins.

Just to be clear - because I mis-interpreted the symptoms initially.

The crash appears on sheet metal components that dont have bends (where initially I thought it was on linked components). Just happened that my original tests included linked components that didnt have bends.

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

gvisca44 — Tue, 24 Jan 2023 06:40:46 GMT

@BrianEkins

As requested. The embedded image (which I have also included as attachment just in case) shows the progression of the script to the point of crash.

import adsk.core import adsk.fusion import traceback def run(context): ui = None try: app = adsk.core.Application.get() ui = app.userInterface product = app.activeProduct design = adsk.fusion.Design.cast(product) if not design: ui.messageBox('No active Fusion design', 'No Design') return allComps: adsk.fusion.Components = design.allComponents for component in allComps: for body in component.bRepBodies: if body.isSheetMetal: msg = f'Component \t "{component.name}" has sheet metal body' app.log(msg) adsk.doEvents() bendLinesBody = component.flatPattern.bendLinesBody for BRepEdge in bendLinesBody.edges: (retval, isBendUp, bendAngle) = component.flatPattern.getBendInfo(BRepEdge) msg = f'\tretval:{retval} isBendUp:{isBendUp} bendAngle:{bendAngle}' app.log(msg) adsk.doEvents() except: if ui: ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

john.kirchner — Tue, 24 Jan 2023 17:07:04 GMT

Thank you for providing the f3z + image, I was able to reproduce this and identify the issue. Will get this fixed!

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

gvisca44 — Tue, 24 Jan 2023 20:25:42 GMT

Thanks John.

Is there somewhere I can track the fix ? Or will I receive notification ?

Re: [CRASH] - component.flatPattern.bendLinesBody on component with no bends

john.kirchner — Wed, 25 Jan 2023 17:19:28 GMT

Unfortunately we don't have any public facing bug fix tracking, this specific fix should be out within the next month or so though.

In the meantime one workaround I can suggest is to compare the flatPattern.flatBody.faces.count (shouldn't crash) to the component.bRepBodies[0].faces.count - the counts are equal, then that means there are no bends in the flatpattern.