FreeCADView Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000260 | FreeCAD | Feature | public | 2011-02-10 10:54 | 2011-03-04 11:20 |
| Reporter | unauthenticated | Assigned To | wmayer | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Target Version | 0.12 | Fixed in Version | 0.12 | ||
| Summary | 0000260: BSpline does not want on a "Drawing sheet" | ||||
| Description | Problems putting BSplines on a "Drawing sheet" FreeCAD_0.11.3987_x86_unstable_setup.msi | ||||
| Tags | No tags attached. | ||||
| FreeCAD Information | |||||
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Could be a problem with OpenCascade because it raises the exception: BSpline curve : # Poles and degree mismatch |
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Hm actually this could be simply considered as "not implemented"... BSplines could/should have a special treat in the Draft module, because I think they are well supported in SVG so we could do something about it. Should I take this bug for me Werner? Or you want to work on the OCC issue too? |
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Somebody recently reported about this problem in the forum and I had a quick look on it. The problem is that the HLR (hidden line removal) algorithm from OCC fails. So, I have to create the debug libs on Windows and should debug into the sources where the exception comes from. Maybe I can find a workaround for it. Later of course we can check the curve type of the edge and do something special for SVG as I did it for arcs and circles. |
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FYI I extruded a closed BSpline and it is visible in a drawing view, but as already mentioned, the edges are not well refined. |
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Surprisingly this error doesn't occur any more. So, it could be an error in the Draft module which created a not fully correct b-spline curve. So, the only thing to do is creating some special SVG code to handle b-splines |
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Unfortunately, I cannot find any documentation whether b-splines are supported by SVG or not. All what I found is how quadratic or cubic bezier curves are handled. So, we have to approximate b-splines by beziers if it's not directly supported. Any further information? |
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Unfortunately, I cannot find any documentation whether b-splines are supported by SVG or not. All what I found is how quadratic or cubic bezier curves are handled. So, we have to approximate b-splines by beziers if it's not directly supported. Any further information? http://apike.ca/prog_svg_paths.html |
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Done in rev. 4194 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-02-10 10:54 | unauthenticated | New Issue | |
| 2011-02-10 12:48 | wmayer | Note Added: 0000585 | |
| 2011-02-10 12:48 | wmayer | Status | new => assigned |
| 2011-02-10 12:48 | wmayer | Assigned To | => wmayer |
| 2011-02-10 12:49 | wmayer | Status | assigned => confirmed |
| 2011-02-11 14:00 | yorik | Note Added: 0000606 | |
| 2011-02-11 15:17 | wmayer | Note Added: 0000608 | |
| 2011-02-12 01:34 | normandc | Note Added: 0000609 | |
| 2011-03-04 08:37 | wmayer | Note Added: 0000686 | |
| 2011-03-04 08:54 | wmayer | Note Added: 0000687 | |
| 2011-03-04 08:54 | wmayer | Note Added: 0000688 | |
| 2011-03-04 11:20 | wmayer | Note Added: 0000689 | |
| 2011-03-04 11:20 | wmayer | Status | confirmed => closed |
| 2011-03-04 11:20 | wmayer | Resolution | open => fixed |
| 2011-03-04 11:20 | wmayer | Category | Bug => Feature |
| 2011-03-04 11:20 | wmayer | Fixed in Version | => 0.12 |
| 2011-03-04 11:20 | wmayer | Target Version | => 0.12 |
