View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0033620 | Community | OCCT:Data Exchange | public | 2024-03-01 13:23 | 2024-03-01 23:11 |
| Reporter | ebknudsen | Assigned To | ika | ||
| Priority | normal | Severity | minor | ||
| Status | new | Resolution | open | ||
| Platform | Linux | OS | Ubuntu 20.04 | ||
| Product Version | 7.7.0 | ||||
| Target Version | 7.8.1 | ||||
| Summary | 0033620: STEP-import of DEGENERATE_TOROIDAL_SURFACE can be misinterpreted. | ||||
| Description | In some cases the step import of a degenerate toroidal shape can fail, depending on the location of the toroid rotational centers. If 2*r_min > r_maj > r_min _and_ the toroidal surface is cut by a plane above the midplane of the toroid (meaning that the minor center of rotation of the toroid is below the cut-plane), the generating curve appears to have the wrong orientation. See attached report degenerate_toroid_bowls.pdf. If OTOH the minor center of rotation is above the cut plane or r_maj<r_min, the surface gets generated correctly. See attached report with sketches "degenerate_toroid_bowls.pdf". I have created a version of the sample glfw-program to visualize without anything else than occt (attached) . Also I have attached a set of step files used in the report. Anything labelled "*left_below*" fails, whereas "*right*" and "*above*" work. | ||||
| Steps To Reproduce | compile the attached version of glfwocct using the attached CMakeLists, (just as for glfw-sample but linking with TKSTEP). run with a step-file as command-line argument. | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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degenerate_toroid_bowls.pdf (341,393 bytes) GlfwOcctWindow.cpp (5,440 bytes) bowl_right_below.step (4,594 bytes) bowl_right_above.step (4,358 bytes) bowl_left_below.step (4,382 bytes) bowl_left_below_214.step (4,452 bytes) bowl_left_above.step (4,396 bytes) bowl_inside_below.step (4,253 bytes) bowl_left_below_oblcut.step (4,902 bytes) bowl_left_below_extended.step (5,168 bytes) bowl_left_below_extendedtoaxis.step (4,305 bytes) bowl_left_below_cutout.step (6,205 bytes) bowl_fc_outside_below.step (4,225 bytes) CMakeLists.txt (1,486 bytes) |
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looks like there are more files |
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In its duplicate the files were zipped but contents are the same. I created a set of duplicate issue by mistake because the system reported an error when I attached the files, so tried in a few ways before realizing the issues had been stored correctly. |
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Yes, my apologies for the error. Sometimes I have the same, but our IT team can't reproduce that. If you can share your browser version and scenario that you did it can help us to avoid that kind of problem. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2024-03-01 13:23 | ebknudsen | New Issue | |
| 2024-03-01 13:23 | ebknudsen | Assigned To | => ika |
| 2024-03-01 13:23 | ebknudsen | File Added: degenerate_toroid_bowls.pdf | |
| 2024-03-01 13:23 | ebknudsen | File Added: GlfwOcctWindow.cpp | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_right_below.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_right_above.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below_214.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_above.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_inside_below.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below_oblcut.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below_extended.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below_extendedtoaxis.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_left_below_cutout.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: bowl_fc_outside_below.step | |
| 2024-03-01 13:23 | ebknudsen | File Added: CMakeLists.txt | |
| 2024-03-01 14:53 | ebknudsen | Relationship added | duplicate of 0033618 |
| 2024-03-01 22:57 | dpasukhi | Note Added: 0115215 | |
| 2024-03-01 23:07 | ebknudsen | Note Added: 0115219 | |
| 2024-03-01 23:11 | dpasukhi | Note Added: 0115220 |
