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IDProjectCategoryView StatusDate SubmittedLast Update
0028070CommunityOCCT:Data Exchangepublic2016-11-08 10:412023-08-01 15:08
Reporterrhplaxis Assigned Togka 
PrioritynormalSeverityminor 
Status newResolutionopen 
PlatformWindowsOSVC++ 2015 
Product Version7.0.0 
Target VersionUnscheduled 
Summary0028070: Writing surface to step removes internal lines and points
DescriptionI have a polygon with internal lines and points, after saving this to step and reading it again the internal objects are gone.

btw. it's my assumption the problem is in writing, it could just a well be in the reading.
Steps To Reproduce# load brep of a rectangle with an internal line and two internal vertices
restore a.brep a
# save this object to a step file
stepwrite a a a.step
# load the object from the step file to b_1
stepread a.step b *

You would expect that a and b_1 are the same. but the internal line and points are gone from b_1

Draw[6]> nbshapes a
Number of shapes in a
 VERTEX : 8
 EDGE : 5
 WIRE : 2
 FACE : 1
 SHELL : 0
 SOLID : 0
 COMPSOLID : 0
 COMPOUND : 1
 SHAPE : 17

Draw[15]> nbshapes b_1
Number of shapes in b_1
 VERTEX : 4
 EDGE : 4
 WIRE : 1
 FACE : 1
 SHELL : 1
 SOLID : 0
 COMPSOLID : 0
 COMPOUND : 0
 SHAPE : 11
TagsNo tags attached.
Test case numberNot required

Attached Files

  • a.brep (2,766 bytes)
  • rect_internal.png (41,842 bytes)

Activities

rhplaxis

2016-11-08 10:41

developer  

a.brep (2,766 bytes)

rhplaxis

2016-11-08 10:41

developer  

rect_internal.png (41,842 bytes)

apv

2017-08-25 15:04

tester   ~0069874

Problem described in issue is reproduced on current state of OCCT.

Issue History

Date Modified Username Field Change
2016-11-08 10:41 rhplaxis New Issue
2016-11-08 10:41 rhplaxis Assigned To => gka
2016-11-08 10:41 rhplaxis File Added: a.brep
2016-11-08 10:41 rhplaxis File Added: rect_internal.png
2017-07-27 09:43 abv Target Version 7.2.0 => 7.4.0
2017-08-25 15:04 apv Test case number => bugs step bug28070
2017-08-25 15:04 apv Note Added: 0069874
2017-10-02 15:44 apv Test case number bugs step bug28070 => Not required
2019-07-10 21:59 abv Target Version 7.4.0 => 7.5.0
2020-09-17 20:03 gka Target Version 7.5.0 => 7.6.0
2021-10-18 14:02 kgv Target Version 7.6.0 => 7.7.0
2022-10-24 10:39 szy Target Version 7.7.0 => 7.8.0
2023-08-01 15:08 dpasukhi Target Version 7.8.0 => Unscheduled