Added DRAW command dsetsignal, resetting OSD signal handler with either armed or disabled FPE handler, according to an option.
If called without arguments, it sets FPE handler only if environment variable OSD_FPE is defined (with value different from 0).
On start, DRAW calls dsetsignal to set FPE signal if CSF_FPE is defined.
Test bugs fclasses bug6143 uses dsetsignal to set FPE handler unconditionally before the test command, and resets it to default at the end.
A number of changes in the code have been done in order to fix floating point exceptions that became generated after enabling signals:
- Global functions Sinh() and Cosh() defined in Standard_Real.hxx are improved to raise Standard_NumericError exception if argument is too big (greater than 710.47586), instead of relying on system treatment of floating point overflow. These functions are used instead of sinh and cosh in ElCLib.cxx.
- Maximal value of parameter on hyperbola is restricted by 23 (corresponding to ~1e10 in 3d) in order to avoid FP overflow in Extrema_GenExtCS.cxx, ShapeFix_EdgeProjAux.cxx.
- Interface of the root curve adaptor class Adaptor3d_Curve has been updated to add new virtual methods BasisCurve and OffsetValue. They complement the adaptor for the case of offset curves. These methods are used in Extrema_GenExtCS.cxx to restrict domain search in the case of offset of hyperbola, in order to get rid of floating point overflow. All classes inheriting Adaptor3d_Curve have been changed to implement the new virtual methods.
- Protection against division by zero has been implemented in ApproxInt_KnotTools.cxx, BRepClass3d_SClassifier.cxx, BRepGProp_Face.cxx, BRepMesh_FastDiscretFace.cxx, Geom2dGcc_Circ2d2TanOnIter.cxx, Geom2dInt_Geom2dCurveTool.cxx, IntPolyh_MaillageAffinage.cxx.
- Protection against calling of math functions of infinite arguments has been added in BRepCheck_Edge.cxx, BRepLib.cxx, CSLib_NormalPolyDef.cxx, Extrema_FuncExtPC.gxx, Extrema_GExtPC.gxx, Extrema_GLocateExtPC.gxx, Intf_InterferencePolygonPolyhedron.gxx, ShapeAnalysis_Surface.cxx, ShapeAnalysis_TransferParametersProj.cxx, ShapeAnalysis_Wire.cxx, math_FunctionSetRoot.cxx.
- Proper initialization of local variables is done in BOPAlgo_PaveFiller_6.cxx, XSDRAWSTLVRML.cxx.
- Inconsistent usage of Standard_Boolean* to access integer data in HLR (caused by #27772) is corrected
Some test cases have been updated to actual state.
The matter was that during checking wires of a shape for small area, non-outer wires were checked with constructing a new face with BRepBuilderAPI_MakeFace. If a face has location an edge from original face has no pcurve on the constructed face, which leads to exception in BRepGProp::SurfaceProperties. The fix constructs new face using EmptyCopy.
The method ShapeAnalysis_Wire::CheckSmallArea() has been changed so as to check area of the outer wire without hole-wires. API of this method has been changed, as the second argument theIsOuterWire is not needed any more.
The test cases have been updated, below are explanations of changes:
test de iges_2 G7
The fixed version leaves a wire in a face, but the master version considered it small and removed. The master version works wrong. It is because the face built with this wire has negative area, but the code in CheckSmallArea function does not get absolute value before comparing area with the tolerance. The left wire leads to splitting of the face on two, checkshape error in the face, and statshape faulty due to increased number of faces in the second pass.
test de iges_2 G2
The fixed version leaves a wire that is removed in the master version. The cause is the same as in G7 test case. However, here the problematic wire has very big tolerance. So, when the fixed version left it in the shape, the overall maximal tolerance became much greater than in reference data.
test de step_3 E6
In fixed version a really bad small wire is removed from the face, while in master version it is left and produces an error in checkshape report. So, it is an improvement.
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl":
- WOK-generated header files from inc and sources from drv are moved to src
- CDL files removed
- All packages are converted to nocdlpack
A tool to remove tails from the wires of a shape was created.
The tool is based on mechanism 'ShapeFix',
is located in types 'ShapeFix_Wire' and 'ShapeAnalysis_Wire',
is enabled through method 'ShapeFix_Wire::FixTailMode' and
is initialized by methods 'ShapeFix_Wire::SetMaxTailAngle' and 'ShapeFix_Wire::SetMaxTailWidth' and
is called through method 'ShapeFix_Wire::FixTails'.
The status of any performing of the last method is accessible through method 'ShapeFix_Wire::StatusFixTails'.
The tail angle is checked only at the tail start.
Mechanism 'ShapeFix' was modified:
- the tool is disabled by default;
- algorithm 'Fix notched edges' is disabled then the tool is enabled;
- the tool and the last algorithm work in turns then the tool works on the request.
'Draw' command 'fixshape' was extended by options '-maxtaila' and '-maxtailw' to test the tool.
'Draw' tests to test the tool were created.
Algorithm 'fixshape' was changed in type 'ShapeProcess_OperLibrary' to
- use new parameters named 'FixTailMode', 'MaxTailAngle' (in degrees) and 'MaxTailWidth' from the algorithm context;
- apply the tool after the shape will be fully fixed if the tool was enabled.
Place holders for the new parameters were created in the resource file of mechsnism 'STEPControl_Reader'.
Test cases for issue CR26261
1. B-spline cache was moved into separated classes: BSplCLib_Cache for 2D and 3D curves and BSplSLib_Cache for surfaces.
2. The cache is used now in corresponding adaptor classes (Geom2dAdaptor_Curve, GeomAdaptor_Curve and GeomAdaptor_Surface) when the curve or surface is a B-spline.
3. Algorithms were changed to use adaptors for B-spline calculations instead of curves or surfaces.
4. Precised calculation of derivatives of surface of revolution is implemented for the points of surface placed on the axis of revolution (Geom_SurfaceOfRevolution.cxx)
5. Small modifications are made to adjust algorithms to new behavior of B-spline calculation.
6. Test cases were modified according to the modern behavior.
7. Changes in BOPAlgo_WireSplitter, BOPTools_AlgoTools, BRepLib_CheckCurveOnSurface and ShapeAnalysis_Wire to use adaptors instead of geometric entities
8. Allow Geom2dAdaptor and GeomAdaptor in case of offset curve to use corresponding adaptor for basis curve
Modification of test-cases according to the new behavior.
The analysis of small area in the method ShapeAnalysis_Wire::CheckSmallArea is performed the following way:
- On the fisrt step algorithm produces a rough estimation of part of surface area.
- In a case if obtained estimation is less than tolerance then evaluate real area and comapre this value with tolerance.
- New flag has been added to XSTEPResource/IGES. In a case if flag is true the faces with small 3d area is removed from ShapeFix context.
Test-case for issue #25923 and update test-cases in de group according to the new behavior.
MAIN CHANGES:
FixAddNaturalBound: the boundaries of "natural bound addition" are restricted: a face, that does not contains an outer wire, should not have any infinite UV boundaries due to new face building (with using a surface) requires specified UV boundaries.
FixAddNaturalBound: myResult is updated in FixAddNaturalBound when the method creates a new face with natural boundary. myResult is required to be updated for next "fix small-area wires" algorithm
IsPeriodicConicalLoop: incorrect working BRepTools_WireExplorer was replaced on TopoDS_Iterator.
a natural bound is added to all the faces are constructed with UV-periodical surfaces (not only sphere and torus; e.g., closed b-splines)
other:
ShapeAnalysis: ReverceSeq renamed to ReverseSeq
BRep_Tool Pnt and Tolerance has the check for null TShape
Test cases for issue CR24249
required null checks were added
test cases were corrected according to their new behavior
Correction test case for issue CR24249
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast
Wrong license statements corrected in several files.
Copyright and license statements added in XSD and GLSL files.
Copyright year updated in some files.
Obsolete documentation files removed from DrawResources.
Fix that face, in which only wire was reordered during shape healing, was not replaced.
Add test case for this fix
Add status for shifted wires in reordering.
Modified test case de/step_1/E3 according to new reference data
