View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0015489 | Open CASCADE | OCCT:Foundation Classes | public | 2007-04-03 19:02 | 2012-01-12 18:07 |
| Reporter | Assigned To | ||||
| Priority | normal | Severity | trivial | ||
| Status | closed | Resolution | fixed | ||
| OS | All | ||||
| Fixed in Version | 6.2.1 | ||||
| Summary | 0015489: Constructor gp_Lin2d(A, B, C) creates line with origin point in infinity | ||||
| Description | If called with parameters: gp_Lin2d (1e-20, -1., 2.) the constructed object has the origin point (-2e+20, 0.). This causes numerical errors because the algorithms generally are not designed to work with quasi-infinite coordinates and distances. The solution of this problem: Corrected constructor of class gp_Lin2d creates the line origin as the nearest point to the global origin (0., 0.) located on the line. This algorithm is simpler than the previous one that created the origin on axis OX or OY, and it avoids any numerical problems whatever the parameters of this constructor. | ||||
| Additional information and documentation updates | Documentation remark, added by AGV 2007-04-12 09:09:31: New features: none Improvements: Fixing the numerical problem in constructor gp_Lin(A, B, C). Previously, the origin of the created line was set as the intersection of the line with axis OX. With small A this brought about very large X-coordinate of the origin point. Corrected constructor of class gp_Lin2d creates the line origin as the nearest point to the global origin (0., 0.) located on the line. This algorithm is simpler than the previous one that created the origin on axis OX or OY, and it avoids any numerical problems whatever the parameters of this constructor. Modified entities: class Lin2d from package gp; modified gp_Lin2d.cxx, need only to rebuild gp and TKMath. | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2007-04-11 16:56 | bugmaster | Assigned To | bugmaster => agv |
| 2007-04-11 16:56 | bugmaster | Status | new => assigned |
| 2007-07-04 12:58 | bugmaster | Status | assigned => resolved |
| 2007-07-04 12:59 | bugmaster | Status | resolved => tested |
| 2007-07-27 17:29 | bugmaster | Status | tested => verified |
| 2009-06-23 17:06 | bugmaster | Status | verified => closed |
| 2009-06-23 17:06 | bugmaster | Resolution | @0@ => fixed |
| 2011-08-02 11:23 | bugmaster | Category | OCCT:FDC => OCCT:Foundation Classes |
| 2012-01-12 18:07 |
|
Description Updated | |
| 2012-01-12 18:07 |
|
Additional Information Updated |
