0028700: BRepBuilderAPI_Sewing produces too small edge covered by its vertices

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Date Submitted

Last Update

0028700

Open CASCADE

[OCCT] OCCT:Modeling Algorithms

public

2017-04-28 16:07

2018-04-17 16:21

Reporter

msv

Assigned To

gka

Priority

normal

Severity

minor

Status

new

Resolution

open

Platform

OS Version

Product Version

[OCCT] 7.1.0

Target Version

[OCCT] 7.4.0*

Fixed in Version

Summary

0028700: BRepBuilderAPI_Sewing produces too small edge covered by its vertices

Description

This bug has been discovered during fixing #23731 as a regression on several test cases. The current version of checkshape does not report such invalidity. However, there is the method BRepLib::FindValidRange() that allows to check the edge for validity in respect to this rule.
It is needed to analyze these test cases and understand whether the sewing algorithm must be corrected.

Steps To Reproduce

tests\bugs\modalg_4\bug714
tests\bugs\modalg_2\bug22770_10
tests\bugs\modalg_2\bug22770_11
tests\bugs\modalg_2\bug22770_18
tests\bugs\modalg_2\bug22770_20
tests\bugs\modalg_2\bug22770_23
tests\bugs\modalg_2\bug22770_27
tests\bugs\modalg_2\bug22770_28
tests\bugs\modalg_2\bug22770_3
tests\bugs\modalg_2\bug22770_30
tests\bugs\modalg_2\bug22770_5
tests\bugs\modalg_2\bug22770_8
tests\bugs\modalg_2\bug22770_9
tests\bugs\modalg_2\bug22804

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No tags attached.

Test case number

bugs modalg_7 bug28700_1, bug28700_2, bug28700_3, bug28700_4, bug28700_5

Attached Files

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Notes
(0065644) msv (developer) 2017-04-28 16:09	In Draw, the following command checks if the shape contains to small edges: foreach e [explode a e] { if {[validrange $e] == "edge has no valid range"} { puts "Error: edge $e is too small" } }

(0070034) apv (tester) 2017-08-29 11:26	Problem described in issue is reproduced on current state of OCCT.

(0075486) ski (developer) 2018-04-17 16:21	Branch CR28700 was created by mistake.

Issue History
Date Modified	Username	Field	Change
2017-04-28 16:07	msv	New Issue
2017-04-28 16:07	msv	Assigned To	=> gka
2017-04-28 16:09	msv	Note Added: 0065644
2017-07-24 09:22	msv	Target Version	7.2.0 => 7.3.0
2017-08-29 11:26	apv	Test case number	=> bugs modalg_7 bug28700_1, bug28700_2, bug28700_3, bug28700_4, bug28700_5
2017-08-29 11:26	apv	Note Added: 0070034
2017-12-05 16:59	msv	Target Version	7.3.0 => 7.4.0*
2018-04-17 16:21	ski	Note Added: 0075486