0031383: Data Exchange - STEPCAFControl_Writer generates invalid curve in STEP file

ID	Project	Category	View Status	Date Submitted	Last Update

0031383	Community	OCCT:Data Exchange	public	2020-02-18 20:26	2021-05-14 09:53

Reporter	thomhong	Assigned To	bugmaster
Priority	normal	Severity	major
Status	closed	Resolution	unable to reproduce
Platform	Visual Studio 2019	OS	Windows 10
Product Version	7.3.0
Target Version	7.6.0

Summary	0031383: Data Exchange - STEPCAFControl_Writer generates invalid curve in STEP file
Description	OCCT 7.4.0's STEPCAFControl_Writer is generating a STEP file that is unable to be opened by consumers, including OCC's STEP reader (appears to be due to a tiny curve with parametric step size < double precision). This is easily reproducible using the OCC CadAssistant application.
Steps To Reproduce	1. Open HSK63AER40120M.STP in CadAssistant 2. Save as STEP model using default settings (HSK63AER40120M-output.step) 3. Close CadAssistant 4. Attempt to open HSK63AER40120M-output.step in CadAssistant CadAssistant will hang indefinitely.
Tags	No tags attached.

Test case number

Date Modified	Username	Field	Change
2020-02-18 20:26	thomhong	New Issue
2020-02-18 20:26	thomhong	Assigned To	=> gka
2020-02-18 20:26	thomhong	File Added: HSK63AER40120M.STP
2020-03-04 11:59	kgv	Summary	STEPCAFControl_Writer generates invalid curve in STEP file => Data Exchange - STEPCAFControl_Writer generates invalid curve in STEP file
2020-11-23 21:18	gka	Assigned To	gka => dpasukhi
2021-04-28 14:24	dpasukhi	Note Added: 0100638
2021-04-28 14:24	dpasukhi	Assigned To	dpasukhi => bugmaster
2021-04-28 14:24	dpasukhi	Status	new => feedback
2021-04-28 14:45	kgv	Resolution	open => unable to reproduce
2021-04-28 14:45	kgv	Target Version	=> 7.6.0
2021-05-14 09:53	bugmaster	Status	feedback => closed

thomhong 2020-02-18 20:26 reporter	HSK63AER40120M.STP (496,736 bytes)

dpasukhi 2021-04-28 14:24 developer ~0100638	Dear bugmaster, please Close the issue. Not reproduce. An incorrect tolerance has caused it to hang indefinitely. It was fixed together with tolerance issues.