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IDProjectCategoryView StatusDate SubmittedLast Update
0032496Community[OCCT] OCCT:Data Exchangepublic2021-07-28 16:412021-07-28 20:08
Reporterrobertlipman 
Assigned Togka 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 6.3.1 
Target Version[OCCT] 7.6.0*Fixed in Version 
Summary0032496: Data Exchange - STEP surface_of_revolution does not display
DescriptionThe two STEP surface_of_revolution surfaces do not display in CAD Assistant or our software based on OCCT. The surfaces are correctly displayed in C3D Viewer and IDA-STEP Viewer.
Steps To Reproduce
pload XDE OCAF VISUALIZATION MODELING
ReadStep D c:/work/lens.stp
vinit View
XDisplay D -dispMode 1
vfit
XGetOneShape s D
checkshape s s
trinfo s

Output:
19:21 Count	STEP Reader Warnings for 'lens.stp'
       -----	-----------
           4	W:ORIENTED_EDGE: Parameter n0.2 (edge_start) not Derived
           4	W:ORIENTED_EDGE: Parameter n0.3 (edge_end) not Derived
          Nb Total:8  for 2 items
19:21 Count	STEP Translator Warnings for 'lens.stp'
       -----	-----------
           1	W:ADVANCED_FACE: Missing seam-edge added
          Nb Total:1  for 1 items
...
  Check                                    Count
 ------------------------------------------------
  Unorientable Shape ....................... 2
  Not Closed ............................... 2
 ------------------------------------------------
...
This shape contains 3 faces.
                    2 empty faces.
                    87 triangles.
                    89 nodes.
                    3 polygons on triangulation.
Maximal deflection 0.045204761150637499
TagsNo tags attached.
Test case number
Attached Files? file icon lens.stp (38,371 bytes) 2021-07-28 19:08
png file icon lens_KO.png (111,508 bytes) 2021-07-28 19:25
png file icon lens.png (85,439 bytes) 2021-07-28 19:58

- Relationships

-  Notes
(0102856)
kgv (developer)
2021-07-28 18:57

Dear Robert,

please don't forget attaching file samples (consider compressing STEP files using 7zip in case if they are large).

Regards,
Kirill
(0102857)
kgv (developer)
2021-07-28 19:28

Attaching screenshots with expected shape presentation would be also helpful.
(0102858)
robertlipman (reporter)
2021-07-28 20:00

Screenshot attached. Is it possible that there is an issue with the STEP file for the oriented_edge entities? Should the edge_start and edge_end be explicitly defined?
(0102859)
kgv (developer)
2021-07-28 20:07
edited on: 2021-07-28 20:08

Thanks for screenshots.

STEP translator generates warnings which might indicate some issues with file (don't know if these are important or not):
19:21 Count	STEP Reader Warnings for 'lens.stp'
       -----	-----------
           4	W:ORIENTED_EDGE: Parameter n0.2 (edge_start) not Derived
           4	W:ORIENTED_EDGE: Parameter n0.3 (edge_end) not Derived
          Nb Total:8  for 2 items
19:21 Count	STEP Translator Warnings for 'lens.stp'
       -----	-----------
           1	W:ADVANCED_FACE: Missing seam-edge added
          Nb Total:1  for 1 items


And produced shape doesn't pass checkshape validation - with unorientable and non-closed errors.


- Issue History
Date Modified Username Field Change
2021-07-28 16:41 robertlipman New Issue
2021-07-28 16:41 robertlipman Assigned To => gka
2021-07-28 18:57 kgv Note Added: 0102856
2021-07-28 19:08 robertlipman File Added: lens.stp
2021-07-28 19:22 kgv Steps to Reproduce Updated View Revisions
2021-07-28 19:24 kgv Steps to Reproduce Updated View Revisions
2021-07-28 19:25 kgv File Added: lens_KO.png
2021-07-28 19:28 kgv Product Version 7.5.0 => 6.3.1
2021-07-28 19:28 kgv Target Version => 7.6.0*
2021-07-28 19:28 kgv Summary STEP surface_of_revolution does not display => Data Exchange - STEP surface_of_revolution does not display
2021-07-28 19:28 kgv Note Added: 0102857
2021-07-28 19:58 robertlipman File Added: lens.png
2021-07-28 20:00 robertlipman Note Added: 0102858
2021-07-28 20:07 kgv Note Added: 0102859
2021-07-28 20:07 kgv Note Edited: 0102859 View Revisions
2021-07-28 20:08 kgv Note Edited: 0102859 View Revisions


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