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IDProjectCategoryView StatusDate SubmittedLast Update
0031661Open CASCADE[OCCT] OCCT:Modeling Algorithmspublic2020-07-10 08:492020-09-15 11:40
Reporterazv 
Assigned Tomsv 
PrioritynormalSeverityminor 
StatusnewResolutionopen 
PlatformOSOS Version
Product Version[OCCT] 7.4.0 
Target Version[OCCT] 7.6.0*Fixed in Version 
Summary0031661: Exception when projecting parabola or hyperbola to plane
DescriptionProjection of parabola or hyperbola to plane, which is not parallel to the curve's plane, leads to the exception in the most cases (ref. Steps to Reproduce). The problem is that ProjLib_ProjectOnPlane cannot provide a canonical curve as a projection of corresponding types of curves and tries to generate infinite B-spline curve. This is not the case for the trimmed curve, but even in this case the projected curve is a B-spline curve.

The main goal of this issue is to provide the canonical curve as a projection of a canonical curve in both cases: trimmed and infinite.
Steps To Reproduce
parabola p 0 0 0  1 1 1  2 0 -2  10
plane pln 0 0 0  0 0 1
projonplane r p pln 0
# OSD_Exception_ACCESS_VIOLATION

hyperbola h 0 0 0  1 1 1  2 0 -2  10 10
plane pln 0 0 0  0 0 1
projonplane r h pln 0
#  Standard_NumericError: Result of Cosh exceeds the maximum value Standard_Real
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- Issue History
Date Modified Username Field Change
2020-07-10 08:49 azv New Issue
2020-07-10 08:49 azv Assigned To => msv
2020-07-10 08:49 azv Relationship added related to 0031016
2020-09-15 11:40 msv Target Version 7.5.0 => 7.6.0*


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