The capabilities of the class BRepOffsetAPI_MakeEvolved have been extended with involving alternate algorithm of resolving the loops in the piped shape. The new option theIsVolume is added for that in the constructor.
New class BRepFill_AdvancedEvolved has been created in order to provide new OCCT-algorithm combining BRepFill_PipeShell and BOPAlgo_MakerVolume.
A change in BOPAlgo_PaveFiller.cxx has been made in order to solve a specific problem of Boolean operation.
The interface of DRAW-command "evolved" has been updated to add the new option. DRAW-command "evolvedsolid" has been deleted. Now it is replaced with DRAW-command "evolved" with the option "-solid".
Testgrid "evolved" has been created.
draw_test_harness.md - description of new options in Draw commands
AppDef_BSplineCompute.hxx, BRepApprox_TheComputeLineOfApprox.hxx, GeomInt_TheComputeLineOfWLApprox.hxx, Approx_BSplComputeLine.gxx - implementation of method SetPeriodic(...) and implementation periodic boundary conditions for multiline in order to get periodic multicurve.
GeomAPI_PointsToBSplineSurface.hxx, GeomAPI_PointsToBSplineSurface.cxx - adding new parameter for methods Init(...) and Interpolate(...), implementation of building periodic tangents for first and last AppDef_MultiPointConstraint of multiline for U direction of surface.
GeometryTest_APICommands.cxx - implementation of new functionality in Draw command surfapp and surfint
GeomFill_NSections.cxx
Fixing problem with bugs modalg_3 bug606_2
Two new functionalities have been added in BRepFilletAPI_MakeChamfer:
- constant throat (the section of chamfer is isosceles triangle, its height is constant in all sections - this is the "throat" of the weld);
- constant throat with penetration(the section of chamfer is right-angled triangle, the first of two surfaces (where is the top of the chamfer) is virtually moved inside the solid by offset operation, the apex of the section is on the intersection curve between moved surface and second surface, right angle is at the top of the chamfer, the length of the leg from apex to top is constant - this is the "throat" of the weld).
- New abstract classes BlendFunc_GenChamfer and BlendFunc_GenChamfInv have been added;
- Class BlendFunc_Chamfer is now descended from BlendFunc_GenChamfer, class BlendFunc_ChamfInv is now descended from BlendFunc_GenChamfInv.
- New class BlendFunc_ConstThroat is descended from BlendFunc_GenChamfer, new class BlendFund_ConstThroatInv is descended from BlendFunc_GenChamfInv.
- New class BlendFunc_ConstThroatWithPenetration is descended from BlendFunc_GenChamfer, new class BlendFund_ConstThroatWithPenetrationInv is descended from BlendFunc_GenChamfInv.
- Class ChFi3d_ChBuilder has now mode of chamfer that can be ClassicChamfer, ConstThroatChamfer and ConstThroatWithPenetrationChamfer.
- Two new DRAW Test Harness commands "chamf_throat" ant "chamf_throat_with_penetration" have been added for the second mode of ChBuilder.
- The interface of DRAW Test Harness command "chamf" changed for symmetric case.
The reason of this problem is in wrong work of classifier algorithm (see the message ~0080992 to the issue #30354). Therefore, the algorithm of IntTools_FClass2d class has been improved. Namely, now orientation of the polygon is computed from area-criterion instead of angle. As result, some simplification of the method IntTools_FClass2d::Init(...) has been made.
<!break>
1. New constructor has been added to the class CSLib_Class2d. It allows applying TColgp_SequenceOfPnt2d.
2. DRAW-commands "addpolygonnode" and "polygonprops" have been created. They are covered by the test case "tests/geometry/2dpolygon/A1".
3. New method Poly::PolygonProperties(...) has been created. See help for detailed information.
4. New testgrid "lowalgos classifier" has been created.
1. New testgrid "lowalgos/intss" has been created. It will contain all test cases on geometrical intersection of two surfaces ("intersect" DRAW-command) and two faces ("bopcurves" DRAW-command).
2. New test case for the issue #28493 has been created because the problem is not reproduced on MASTER.
3. Test case (lowalgos/intss/bug24472) for the issue #29501 has been modified in order to check loops of the resulting intersection curves.
1. The condition of WLine breaking (in IntWalk_IWalking algorithm) has become more independent of the input tolerance.
2. Currently the algorithm of IntPatch_Points of WLine processing depends on the algorithm of obtaining the WLine.
3. The methods IntSurf_LineOn2S::Add(...) and IntSurf_LineOn2S::SetUV(...) have become not inline (see the message ~0077431 in the issue #29866).
Bnd_OBB constructor from Bnd_Box is fixed for VOID input.
DRAW command bounding command is adjusted:
- Support of old syntax 'bounding shape'is restored.
- Exception on VOID bounding box is avoided.
- Arguments are handled in case-insensitive way.
- Options -s, -perfmeter, and ability to set result as first argument are removed as redundant.
- Help is moved to command definition.
Separate command OCC29311 is added (in QADraw) to do the same as option -perfmeter did; tests are updated.
The following improvements have been introduced in Boolean Operations algorithm s:
1. UBTree is replaced with EBTree in Boolean operations to be able to add/remove elements into the tree of bounding boxes.
2. Repeated (nested) intersection of sub-shapes is performed with argument vertices whose tolerances increased during the operation.
3. The algorithms of Edge/Edge and Edge/Face intersection have been improved for the cases when the intersection point is located close to the edge boundaries .
4. New procedure has been implemented to ensure forced creation of Edge/Face common blocks in cases when the edge is really close to the face.
5. Post-processing of Face/Face intersection results has been improved.
6. Extension of the planar faces for Plane/Plane intersection is avoided.
7. Builder Face now better classifies potentially internal edges relatively to new faces with filtering by bounding boxes.
Side effect changes:
1. IntTools_ShrunkRange now keeps the length of the valid range of the edge.
2. The method BOPDS_DS::UpdateEdgeTolerance() has been removed as unused (replaced by the BOPAlgo_PaveFiller::UpdateEdgeTolerance()).
Test case for the issue 0029900.
Test case for the issue 0029711.
Adjustments of the existing test cases.
Avoid using uninitialized variables.
The algorithm has been improved for the cases when the intersection line goes through the cone apex.
<!break>
1. All special points are put to the ALine forcefully (if they are true intersection point). Currently this step has not been implemented yet.
2. Now the tolerance of IntPatch_Point (put into ALine) is computed in order to cover the distance between it and the correspond ALine.
3. Test cases have been created.
4. Procedure of trimming IntAna_Curve has been improved.
5. Criterion when the discriminant of IntAna_Curve can be considered to be equal to 0 has been improved.
6. Methods IntAna_Curve::FindParameter(...) (and IntPatch_ALine::FindParameter(...)) currently returns list of all parameters corresponding the given point (IntAna_Curve can be self-interfered curve). Before the fix, this method always returned only one (randomly chosen) parameter.
7. Interfaces of the following methods have been changed: IntAna_Curve::FindParameter(...), IntPatch_ALine::FindParameter(...), IntPatch_ALine::ChangeVertex(...), IntPatch_SpecialPoints::AddPointOnUorVIso(...), IntPatch_SpecialPoints::AddSingularPole(...), IntPatch_WLineTool::ExtendTwoWLines().
8. Following methods have been added: IntAna_Quadric::SpecialPoints(...), IntPatch_ALineToWLine::GetSectionRadius(...), IntPatch_SpecialPoints::ProcessSphere(...), IntPatch_SpecialPoints::ProcessCone(...), IntPatch_SpecialPoints::GetTangentToIntLineForCone(...).
------------------
1) tests/boolean/volumemaker/C5
tests/boolean/volumemaker/C6
tests/boolean/volumemaker/E7
They are real IMPROVEMENTS. In the FIX (in compare with MASTER), section result between pairs of faces f2&f6 (C5), f3&f7 (C6) and f1&f5 (E7) is closed. Separated test cases have been created in order to focus on the problem with section. Bug #28503 has been fixed.
Correction in test cases.
Modified method: Approx_ComputeLine::Compute
Check of multicurve is now always unconditional, the procedure of check is modified to avoid infinite loops.
Modified classes: GeomLib_CheckBSplineCurve and GeomLib_Check2dBSplineCurve
Correction of poles at the ends of curve is modified to fit the direction of tangent defined by two first points or two last points of walking line.
Also modified:
BOPAlgo_PaveFiller: modified methods PostTreatFF, RemoveUsedVertices - now unused vertices are included in the list of vertices to be absorbed by other ones.
Implementation of the method for simplification of the result of Boolean Operation on the API level.
The method BRepAlgoAPI_BuilderAlgo::SimplifyResult has been added, so the derived classes such as BooleanOpeation and Splitter can also use this method.
The result shape simplification should be called after the operation is done. The simplification is performed by the means of ShapeUpgrade_UnifySameDomain algorithm.
Draw command "bsimplify" has been added to control the simplification options.
Documentation for new functionality and draw commands controlling the options of Boolean operations.
Test cases for the new functionality.
Side-effect change:
The algorithms in Boolean component have been changed to use the BRepTools_History as a History tool.
Now it became possible to disable the collection of shapes modifications during Boolean Operations, which may be useful for performance sake (in draw the option is controlled by *setfillhistory* command).
Draw command "unifysamedom" has been changed to accept the angular tolerance in degrees instead of radians.
Problem is fixed by the fix for the issue #0028599 (porting of the BRepProj_Projection to modern Boolean Operations algorithm)
Thus, only test case is integrated here.
The method *BRepTools::UpdateFaceUVPoints* has been modified to resets the UV points of the edge to the bounding points of the parametric curve of the edge on the face.
Test cases for the issue.
Adjust test cases heal split_angle_advanced ZC3, ZE6, ZE9 for current behavior as they show less faulty shapes now.
Adjust test case bugs modalg_6 bug21246 as it works correctly now.
Implementation of the mechanism for unification of the history commands for all OCCT algorithms.
The following Draw commands should be used to track the history of shapes modifications of any operation:
- modified - to find the shapes modified from the given shape in the given history.
- generated - to find the shapes generated from the given shape in the given history.
- isdeleted - to check if the given shape has been deleted during operation.
The mechanism allows fast & easy enabling of the DRAW history support for the algorithms supporting the history on the API level (i.e. the algorithm should have the methods Modified(), Generated() and IsDeleted()).
To enable the draw history support it is necessary to store the history of the algorithm into the session. For instance:
TopTools_ListOfShape Objects = ...; // Objects
TopTools_ListOfShape Tools = ...; // Tools
BRepAlgoAPI_Cut aCut(Objects, Tools); // Boolean cut operation
BRepTest_Objects::SetHistory(Objects, aCut); // Store the history for the Objects (overwrites the history in the session)
BRepTest_Objects::AddHistory(Tools, aCut); // Add the history for the Tools
To get the stored history in draw the command "savehistory" should be used. It saves the history kept in session into a Drawable object with the given name:
# perform cut
bcut r s1 s2
# save history of cut
savehistory cut_history
explode s1 f
modified m cut_history s1_1
The Draw History commands of the following algorithms have been removed:
- Boolean Operations;
- Defeaturing;
- Unify same domain;
- Sweep;
- Thrusections;
All these algorithms have been switched to support the new Draw history mechanism.
The Fillet and Blend algorithms have been also enabled to support history commands.
Boolean operations - Allow repeated intersection of edges to find the coinciding pairs.
Previously, only the edges rejected by bounding boxes classification has been additionally checked on coincidence. The current patch removes this filter allowing all edges with coinciding vertices to be checked on coincidence.
Adjustment of the test cases for current behavior:
1. The following cases are improvements:
boolean volumemaker A8
bugs modalg_1 buc60703_1
bugs modalg_1 buc60703_2
bugs modalg_1 buc60703_4
bugs modalg_6 bug26789_1
bugs modalg_6 bug26789_2
bugs modalg_7 bug26883_4
bugs modalg_7 bug27948
2. bugs modalg_7 bug29580_1 is modified to extend the validity checks.
1. Method BRepOffset_Tool::Inter3D is modified: now selection of proper edges is performed here, they are not concatenated into one edge if they go through a vertex on a boundary.
2. Method BRepOffset_Inter3d::ConnexIntByInt is modified: selection of edges is eliminated.
3. Method BRepOffset_Inter2d::ConnexIntByInt is corrected to be able to process seam edges correct.
Test parse rules are improved to recognize messages with word 'fail' or 'failure' as errors.
Test cases are corrected accordingly (TODO or REQUIRED statements added where fail messages were not noticed previously).
Boolean Operation - avoid creation of INTERNAL solid from unclassified faces in Solid Builder algorithm.
Instead warn the user that some of the faces have been unclassified and not used for solids creation.
Adjustment of the test cases.
Test cases for the issue.
The usage of *BRepAlgo_Section* has been replaced with the usage of *BRepAlgoAPI_Section* in *BRepProj_Projection* algorithm.
The TODO statements have been removed from the failing test case in the "prj" grid as they are working correctly now.
The following changes have been made to improve the performance *BRepAlgoAPI_Section*:
1. Revision of the *IntPolyh_Intersection* class to avoid repeated calculation of the deflection of the same triangulation.
2. Small revision of the Edge/Face intersection algorithm to perform Extrema computation on the whole intersection range of the edge instead of discrete ranges.
3. Implementation of the extrema computation for the Circle and Sphere.
4. Correct computation of the parameter of the point on the Circle.
In the algorithm math_FunctionRoots, improve the case when it is needed to find the extremum of the function. Earlier, to solve this task the method of gold section was used. With the patch, firstly the algorithm tries to find zero value of the derivative function. In most cases it gives precise result. Secondly, the algorithm tries to find zero value of the function using the old approach. The algorithm chooses the best solution among two computed by different methods.
In the method PutStickPavesOnCurve of BOPAlgo_PaveFiller, forbid putting a vertex to the end of the curve if this end already has a vertex assigned to it. This allows getting rid of unwanted colliding of vertices.
In the method UpdatePaveBlocks of BOPAlgo_PaveFiller, make the check for micro edges more precise.
New category of tests "lowalgos" has been added. Tests for low level algorithms are to be put there. "2dinter" is a new group of tests in this category.
Introduction of the new key for "2dintersect" command, allowing printing the intersection state for each point.
It has the following syntax now:
"2dintersect curve1 [curve2] [-tol tol] [-state]"
Options:
-tol - allows changing the intersection tolerance (default value is 1.e-3);
-state - allows printing the intersection state for each point.
Correct the test case bugs/modalg_7/bug28274 to make proper checks of the result.
In case of sequence of edges based on lines (which are going to be unified into one line-segment), take into account a linear tolerance value.
Get rid of regressions.
Updates of USD-tests.
Usage of Bnd_Box-filtering is eliminated while putting a (definitely) common vertex between two faces on the intersection curve.
Algorithm of putting not-common (ON/IN) vertices has not been changed.
Wrong distance computation has been corrected.
Some test-cases have been corrected according to their new behavior. Namely, built (by approximation algorithm) curve(s) has changed its geometrical position.
1. tests/blend/simple/X4
It is not a regression because the result is not correct on both MASTER and FIX (see explanation in the issue #26740). This problem is expected to be solved after porting Fillet-algorithm to new Boolean operation. Old Boolean operations do not cover Edge-Edge tangent-zone by vertex.
2. tests/bugs/modalg_6/bug27341_318
"checknbshapes" has been deleted in order to avoid non-stable behavior (see issue #29360) of this test case. New result is OK on both Linux and Windows platform.
1. The class Bnd_OBB has been created to describe the Oriented Bounding Box.
2. Several key methods have been implemented: Bnd_OBB::IsOut(...), Bnd_OBB::Add(...) and Bnd_OBB::Enlarge(...).
3. Interface of Bnd_Box class has changed. New methods have been created. See Bnd_Box.hxx for detailed information.
4. BRepBndLib and Draw_Box classes have been amended in order to provide correct work with Bnd_OBB class.
5. Interface of "bounding" DRAW-command has been changed. Please see help for detailed information.
6. New DRAW-command "isbbinterf" has been created. Please see help for detailed information.
7. "boundingstr" and "optbounding" DRAW-commands have been eliminated because their function can be made by "bounding" DRAW-command (e.g. see tests/bugs/vis/buc60857 or samples/tcl/snowflake.tcl test cases).
8. Documentation has been updated.
Sometimes the algorithm of purging of extra points in the walking line makes enormous difference in distance between two neighbor segments of the line. This badly impacts the quality of approximation result. This patch balances the difference in distances by forbidding deletion of some points.
1. tests/bugs/modalg_6/bug27615
The reason of the correction is explained in the message ~0072580 (see issue #28557).
2. tests/bugs/modalg_7/bug28892*
tests/bugs/modalg_7/bug28984
The reason of the correction is explained in the message ~0072583 (see issue #28984).
Approximation parameters: degmin, degmax, max number of segments, boundary condition, maximal distance of projecting are added in interface of classes ProjLib_ProjectedCurve, ProjLib_ComputeApprox,
ProjLib_ComputeApproxOnPolarSurface
Algorithm of Approx/Approx_ComputeCLine is modified in order to treat maximal number of segments allowed for cutting.
Algorithm of method BOPTools_AlgoTools2D::MakePCurveOnFace(...) is modified in order to manage cases with big edge tolerances.
Test case added
Some test cases were modified according to new behavior of algorithms
Test for 0025930: thickness of spherical cap is invalid
Test for 0025939: SIGSEGV in MakeThickSolid
Test for 0025940: MakeThickSolid creates C0 continuous edges
Test for 0026604: GeomFill_Pipe doesn't fit given bounds
Test for 0026655: ChFi3d_Builder algorithm fails to build fillets if some input edges connect with seam edges
Test for 0026697: BRepFeat_MakePrism returns empty compound
Test for 0026716: Mesher cannot create a mesh of brep model due to ShapeFix_Wire::FixShifted()
Test for 0026735: Adjacent perpendicular edges are detected as overlapped by DRAW command checkoverlap.
Test for 0026793: General Fuse algorithm produces incorrect result
Test for 0026795: Unable to perform General Fuse operation on the attached faces
Test for 0026842: bopsection result does not contain any edges.
Test for 0026882: Edge/Edge intersection algorithm produces incorrect result
Test for 0026883: Wrong result of Boolean Operation
Test for 0026889: Very poor mesh result from shape
Test for 0026928: Edges are meshed too coarsly
Test for 0026933: Section works unstably due to incorrect work of the method IsExistingPaveBlock
Test for 0026943: Wrong projection of helix on cylinder by ShapeConstruct_ProjectCurveOnSurface
Test for 0026957: Unify same domain operation is slow for multiple shells
Test for 0026978: Interactive selection is insensitive to swept shell
Test for 0027004: ShapeUpgrade_UnifySameDomain produces invalid result
Test for 0026280: Mechanism 'ShapeFix' is unable to heal a shape
Test for 0026282: Mechanism 'ShapeFix' has errors revealed by wire tool 'FixTails'
Test for 0026291: BRepMesh produces mesh with gap on the attached shape
Test for 0026382: BRepMesh produces internal nodes outside the face interior
Test for 0027453: Wrongly meshed surface
Test for 0027524: The command checkshape does not find the maximal deviation between curves representations
Test for 0026225: Wrong result of chamfer in case of coinciding bound of chamfer's surface with bound of a face
Test for 0026295: Sweep fails with BRepFill_ContactOnBorder
Test for 0026374: GeomFill_Profiler fails to unify BSplines if one has knot distance less than PConf
Test for 0026558: Failing to build isoline for offset surface
Test for 0026563: Boolean cut operation in new API multi-tool mode performs fuse instead of cut
Test for 0026568: Exception when creating pipe
Test for 0027419: Incorrect result of Edge/Face intersection
Test for 0027469: Regression vs 6.9.1: Wrong result of Edge/Face intersection
Test for 0027471: Wrong result of pipe
Test for 0027472: Wrong result of cut
Test for 0027614: Sewing returns result with too high tolerance
Test for 0026154: Visualization - v3d viewer grid disappears due to automatic z-fit
Test for 0026174: Loss of color after the second write of file (iges).
0. Basic tools for defining classes representing alerts (errors, warnings etc.) and collecting them during execution of algorithms are added in Message package.
1. Refactoring of the Error/Warning reporting system of the algorithms in Boolean Component.
To dump the description of the Error/Warning status of the algorithm the DumpErrors/DumpWarnings method should be called.
Also, the methods GerErrorMsg(int Error) and GetWarningMsg(int Warning) have been implemented to get the description for the given Error/Warning.
All Error/Warning statuses are now listed in the enumeration ErrorStatusEnum/WarningStatusEnum of the algorithm.
It is also possible to get the shapes for which the warning has been set by using the method GetWarningShapes().
2. The new class BOPAlgo_Options has been created to unify the options of the BOPAlgo_* and BRepAlgoAPI* algorithms.
3. The new checks across the algorithms have been added to detect and report errors and warnings.
4. Test cases
boolean bopcut_complex B9 E1 E5 E8
boolean bopfuse_complex B4 B5 C9 D1 D4 D5 D6 D7
have been rewritten to use Cells Builder algorithm instead of Boolean Operations algorithm, because latter always returns error "Unsupported Boolean operation" for these cases.
5. New chapter has been added in the user guide for Boolean Operations - Error / Warning reporting system.
6. Added comment to NCollection_List::Remove(Iterator&)
New method for building surface polyhedron (class IntCurveSurface_Polyhedron), which takes in account intervals of discontinuity of surface is added for constructor IntCurvesFace_Intersector.
Bug in methods NbU(V)Intervals and U(V)Intervals for Offset surfaces is fixed.
1. Method Approx_ComputeLine::Perform is modified: now it contains also recursive calls after new line computation made by new method ApproxInt_MultiLine::MakeMLOneMorePoint.
2. New method MakeMLOneMorePoint is added to ApproxInt_MultiLine: it builds new sub-line as a part of main line with new point added into the middle of the longest interval between existing points.
3. Method ShapeConstruct_ProjectCurveOnSurface::ApproxPCurve is modified to avoid regressions: now it takes care of the set of initial points to be enough close to each other so that an interval between two adjacent points is less than half-period of the surface.
4. Modification in ShapeConstruct_ProjectCurveOnSurface: correction of pcurves of edges which extremities are in the singularities of surface.
The methods PerformVerticesEE() and PerformVerticesEF() of the class BOPAlgo_PaveFiller have been replaced with the new PerformNewVertices() method.
While splitting the Pave Blocks with extra paves, check that the new Pave Blocks have the valid intersection range. If the new Pave Block does not have such range do not create it and unify its vertices making SD vertex.
Re-computation of the Shrunk Data for the modified Pave Blocks. The new method BOPDS_DS::IsValidShrunkData(const Handle(BOPDS_PaveBlock)& thePB) has been implemented to check that the Shrunk Data of the Pave Block is still valid. It may become invalid in case the tolerance values of the vertices of the Pave Block have been modified.
The test case bugs/modalg_6/bug27448_2 has been marked as BAD, because it uses the invalid shapes as inputs for BOP.
Test cases for the issue 0028690.
Now, the range of BRep_CurveRepresentation of the edge is updated if at least one of its boundary is not infinite (earlier, it was updated if all two boundaries are not infinite only).
Subdivision of curve parametric interval based on deflection criteria is added for curve type OtherCurve in
Extrema_GExtPC.gxx. Algorithm of subdivision is implemented in Extrema_Curve(2d)Tool.cxx
New Draw command projpcurve for projection of point on CurveOnSurface is added in SWDRAW_ShapeAnalysis.cxx
projpcurve is modified to reflect "start parameter" in usage message and Draw help.
Get rid of iterations on maps with shape key by replacing simple maps with indexed maps. So iteration is done on integer key.
The map containers have been updated to insert into them type definitions of key and value.
The new methods RemoveKey() and RemoveFromIndex() have been added to indexed [data] map to be able to remove an arbitrary key from the map.
All the code in OCCT has been updated where RemoveLast() and Substitute() methods were used to remove a key from indexed [data] map.
The methods BOPAlgo_Tools::MakeBlocksCnx(), BOPAlgo_Tools::MakeBlocks() and static method MakeBlocksCnx in BOPAlgo_Builder_2.cxx have been replaced with the new template method BOPAlgo_Tools::MakeBlocks(). The blocks of connected elements are now stored into the list of list instead of data map.
All methods BOPAlgo_Tools::FillMap() have been replaced with the new template method BOPAlgo_Tools::FillMap().
Making the Pave Block with the smallest index of original edge to be the first in the Common Block (i.e. the representing Pave Block).
The following improvements have been made in Boolean Operations algorithm to avoid regressions:
- When updating the existing common block update its pave blocks in a way that the parameters of the paves should be valid for the original edge (bugs/modalg_5/bug24809);
- When trying to reduce the tolerance of the section edge check the tolerance of all Face/Face interferences that created this edge (boolean/volumemaker/C4,D2);
- Avoid producing the different Pave Blocks for the same section edge (boolean/volumemaker/D6);
Adjustment of the test cases.
1. The reason of exception has been eliminated.
2. Algorithm in IntPatch_WLineTool::JoinWLines(...) method has been modified in order to forbid join curves in the point where more than two intersection lines meet. More over, joining is forbidden if local curvature in the connection point is too big (see function CheckArgumentsToJoin(...) in the file IntPatch_WLineTool.cxx).
3. Interface of IntPatch_WLineTool::JoinWLines(...) method has been modified in order to reduce number of arguments.
4. Small corrections in IsSeamOrBound(...) static function has been made. Namely, check has been added if two boundaries are in the same period region but are too far each to other (see IntPatch_WLineTool.cxx, IsSeamOrBound(...) function, line # 532).
5. "Reversed" flag has been made local. Now, it is pure local characteristic: the algorithm decides itself, shall we reverse the argument order. This correction makes the algorithm more commutative (see issue #25404). However, IntPatch_WLineTool::JoinWLines(...) method can return non-commutative result.
6. Algorithm of searching small intersection curves has been improved.
7. New methods have been added in Bnd_Range class.
Some test cases have been adjusted according to their new behavior.
1. tests\bugs\modalg_6\bug26310_3
tests\bugs\modalg_6\bug26310_4
tests\bugs\moddata_2\bug235
tests\perf\modalg\bug26310_1
tests\bugs\modalg_5\bug24915
Logic of these cases has been changed. Mover over, additional check has been added in "bug26310_1" test case. Therefore, its performance will be slower than on the current MASTER.
2. tests\bugs\modalg_5\bug25292*
Scripts have been rewritten in order to make it more readable. Logic of these cases has not been changed.
