View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0031641 | Community | OCCT:Modeling Algorithms | public | 2020-06-29 11:22 | 2021-09-05 23:24 |
| Reporter | mat127 | Assigned To | bugmaster | ||
| Priority | normal | Severity | major | ||
| Status | closed | Resolution | no change required | ||
| Platform | Linux 64bit | OS | Fedora Core | ||
| Product Version | 7.3.0 | ||||
| Target Version | 7.6.0 | ||||
| Summary | 0031641: Modeling Algorithms - IntCurvesFace_ShapeIntersector incorrect result | ||||
| Description | There is a shape stored in the attached shape.brep file. IntCurvesFace_ShapeIntersector gives an icorrect results for checking intersections of this shape with lines parallel to the Z axis at particular (x,y) directions. The application oputput is: [(0.839, -4.675, -1.555), (0, 0, 1)] (0.839, -4.675, 0): out (0.839, -4.675, 0): in (0.839, -4.675, 1.5): out [(2.304, -3.40779, -1.555), (0, 0, 1)] (2.304, -3.40779, 0): out Line definition [(location),(direction)] is followed by an intended list of intersection points and their transitions in the form (intersection location): transition. In both cases the first intersection point having the transition 'out' is errorneous. It means that the line for z < 0 is inside the shape which is not true. | ||||
| Steps To Reproduce | Compile and run the attached .cxx file and check the output according to the description. Note that the application needs the provided shape.brep file being placed in the same directory as the application binary. | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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intersector.cxx (2,622 bytes) |
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shape.brep (590,377 bytes) |
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intersector2.cxx (2,389 bytes) |
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shape2.brep (1,819,036 bytes) |
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intersector3.cxx (2,402 bytes) |
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Similar issue observed for the shape2.brep shape. Compile and run the intersector3.cxx (please ignore intersector2.cxx) and check the output: [(0.801494, -3.855, 1.88088), (0, 1, 0)] (0.801494, -3.855, 1.88088): in (0.801494, 3.855, 1.88088): out This looks like a valid output signaling that the line is inside the shape for -3.855 < y < 3.855. But it is not true. The line just touches the shape at both intersection points. |
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Branch CR31641 has been created by abulychev-ext. SHA-1: c2f36301d793fd36f2b026fa046aea5ec73f43df Detailed log of new commits: Author: abulyche Date: Tue Aug 17 15:29:56 2021 +0300 0031641: Modeling Algorithms - IntCurvesFace_ShapeIntersector incorrect result Added command "intcshape" to BRepTest_OtherCommands.cxx for testing algorithm IntCurvesFace_ShapeIntersector |
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Branch CR31641 has been updated forcibly by abulychev-ext. SHA-1: 59fe737420b55e62ef9a3fcdceb5173eaba7dabd |
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In fact, the transitions are determined not relative to the entire shape, but relative to which side of the face (inside or outside) the line enters this face. And this algorithm works correctly. So, this is not a bug, but it's just a misunderstanding of the user. |
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It is not a bug, algorithm works correctly for given input. Issue can be closed. |
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Review |
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Branch CR31641 has been deleted by kgv. SHA-1: 59fe737420b55e62ef9a3fcdceb5173eaba7dabd |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-06-29 11:22 | mat127 | New Issue | |
| 2020-06-29 11:22 | mat127 | Assigned To | => msv |
| 2020-06-29 11:22 | mat127 | File Added: intersector.cxx | |
| 2020-06-29 11:23 | mat127 | File Added: shape.brep | |
| 2020-09-10 16:55 | mat127 | File Added: intersector2.cxx | |
| 2020-09-10 16:55 | mat127 | File Added: shape2.brep | |
| 2020-09-10 17:01 | mat127 | File Added: intersector3.cxx | |
| 2020-09-10 17:05 | mat127 | Note Added: 0094389 | |
| 2020-09-14 09:52 | msv | Assigned To | msv => ifv |
| 2020-09-15 09:56 | ifv | Assigned To | ifv => akulagin |
| 2021-06-01 17:01 | ifv | Assigned To | akulagin => abulychev-ext |
| 2021-06-01 17:03 | kgv | Summary | IntCurvesFace_ShapeIntersector incorrect result => Modeling Algorithms - IntCurvesFace_ShapeIntersector incorrect result |
| 2021-08-11 09:36 | ifv | Status | new => assigned |
| 2021-08-17 15:30 | git | Note Added: 0103262 | |
| 2021-08-19 13:58 | git | Note Added: 0103303 | |
| 2021-08-19 14:27 | abulychev-ext | Assigned To | abulychev-ext => ifv |
| 2021-08-19 14:27 | abulychev-ext | Status | assigned => resolved |
| 2021-08-19 14:28 | abulychev-ext | Note Added: 0103304 | |
| 2021-08-19 14:36 | ifv | Note Added: 0103305 | |
| 2021-08-19 14:36 | ifv | Assigned To | ifv => bugmaster |
| 2021-08-19 14:36 | ifv | Status | resolved => reviewed |
| 2021-08-19 14:41 | kgv | Status | reviewed => feedback |
| 2021-08-19 14:41 | kgv | Resolution | open => no change required |
| 2021-08-19 14:41 | kgv | Target Version | => 7.6.0 |
| 2021-08-19 15:50 | ifv | Note Added: 0103310 | |
| 2021-09-03 13:39 | bugmaster | Status | feedback => closed |
| 2021-09-05 23:24 | git | Note Added: 0103827 |
