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IDProjectCategoryView StatusLast Update
0028653Open CASCADEOCCT:Data Exchangepublic2024-09-25 12:53
Reporteranv Assigned Todkulikov  
PrioritynormalSeverityminor 
Status assignedResolutionopen 
Product Version7.3.0 
Target VersionUnscheduled 
Summary0028653: Data Exchange - STEP Reader can't import entities that don't fit standard scheme
DescriptionThis issue was reported by a customer. STEP file on import with OCCT loses some of its entities, though AutoCAD translates it fully.
Short research showed that file contains some entities (BSpline surfaces) which records don't fit STEP standard scheme.

(B_SPLINE_SURFACE(1,2,...(()))BOUNDED_SURFACE()REPRESENTATION_ITEM('')GEOMETRIC_REPRESENTATION_ITEM()SURFACE());

B_SPLINE_SURFACE is a subtype of BOUNDED_SURFACE, thus should go after it. And also it should have one of it's subtypes written (B_Spline_Surface_With_Knots, Uniform_Surface, Quasi_Uniform_Surface, Bezier_Surface ).
Steps To ReproduceReadStep D D:/BODY_Roto Sweep.42.stp
TagsNo tags attached.
Test case number

Activities

kgv

2018-03-13 15:23

developer   ~0074437

Last edited: 2018-03-13 15:24

Also, trying to import IFC file (which is another scheme) leads to stack overflow in STEP reader.

dpasukhi

2024-09-24 20:10

administrator   ~0116762

No files

anv

2024-09-25 12:40

developer   ~0116763

File was renamed and is stored in a private tests data repository as follows:
unsorted / step / bug28653.stp

dpasukhi

2024-09-25 12:53

administrator   ~0116764

The issue based on the complex STEP entity - needs to investigate and implement new Complex type.

Issue History

Date Modified Username Field Change
2017-04-14 13:11 anv New Issue
2017-04-14 13:11 anv Assigned To => szv
2017-04-14 13:12 szv Summary STEP Reader can't import entities that doesn't fit standard scheme => STEP Reader can't import entities that don't fit standard scheme
2018-03-13 15:23 kgv Note Added: 0074437
2018-03-13 15:24 kgv Note Edited: 0074437
2021-02-18 13:00 bugmaster Assigned To szv => szy
2021-02-18 14:27 kgv Summary STEP Reader can't import entities that don't fit standard scheme => Data Exchange - STEP Reader can't import entities that don't fit standard scheme
2023-09-01 18:21 dpasukhi Assigned To szy => dpasukhi
2024-09-24 20:10 dpasukhi Assigned To dpasukhi => anv
2024-09-24 20:10 dpasukhi Status new => acknowledged
2024-09-24 20:10 dpasukhi Note Added: 0116762
2024-09-25 12:40 anv Assigned To anv => dkulikov
2024-09-25 12:40 anv Status acknowledged => assigned
2024-09-25 12:40 anv Note Added: 0116763
2024-09-25 12:53 dpasukhi Note Added: 0116764
2024-09-25 12:53 dpasukhi Project Internal => Open CASCADE