Avoid usage of uninitialized variable.

Use FORWARD orientation of edges and face when attaching pcurve from one edge to another.
Test case for the issue.

Boolean Operations algorithm improvements:
1. To be able to add/remove elements into the tree of bounding boxes UBTree is replaced with EBTree in Boolean operations.
2. Perform repeated (nested) intersection of sub-shapes of the arguments with vertices which tolerances have been increased during the operation.
3. Edge/Edge and Edge/Face intersection point creation improvement for the cases when intersection point is located close to the edge's boundaries.
4. Forced Edge/Face intersection procedure to ensure common blocks creation.
5. Face/Face intersection post treatment stage improvements.
6. Avoid extension of the planar faces for Plane/Plane intersection.
7. Builder Face algorithm - improve classification of the potentially internal edges relatively new faces by adding filtering by bounding boxes.

Side effect changes:
1. IntTools_ShrunkRange is 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.

Map the very upper value (theValue==theMax) to the largest color interval.

The regression caused by the patch for 0030534 has been eliminated. For that the method InsertWiresIntoFaces() has been corrected: the face to which a wire is added is first oriented as forward.

1. Add method TransformPCurves to ShapeUpgrade_UnifySameDomain - to rotate and translate existing pcurves instead of projecting.
2. Modify method ShapeUpgrade_UnifySameDomain::IntUnifyFaces - now it does not apply ShapeFix to new wires and new faces.
3. In the method UnifyEdges: add merging degenerated edges.

- Disable code introduced by fix for issue 28747, causing compilation failure

Method BRepLib::SameParameter has been corrected to synchronize check of resulting tolerance with BRepCheck.

Hotfix for issue 27271 (avoiding potential seam edges) is deleted.

Correction of test case

Add method BuildHistory providing history for sub-shapes of profile and spine to BRepFill_Pipe.

Add protection from type mismatch while ensuring Same Parameter on U-edges

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.

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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.

The algorithm has been improved for the cases when the intersection line goes through the cone apex.

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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.

Add history for subshapes of spine: edges and vertices. Each edge of spine generates a shell. Each vertex of spine generates a set of edges and, possibly, faces (in the case of Round Corner).

(cherry picked from commit fcad97e74bdd3a96f0467188f5468b70cb0e2c81)

Wrong setting first/last vertices is fixed
Test case added

(cherry picked from commit 73a7509f)

Before the fix, small arc of circle returned as intersection result. It was connected with the fact that the circle always was limited in 0 and 2*PI points. Currently the bounds of the circle (retrieved as an intersection curve) are computed from the real domain of the arguments (there is not a snap to the fixed 0 and 2*PI points).

(cherry picked from commit 94783b51)

BOPTools_AlgoTools::ComputeState - increase the chance of correct classification of the face relatively solid by classifying the point located inside that face instead of the point taken near the edge of that face.
Test case for the issue.

(cherry picked from commit 56062e13)

Added protection against clash of attributes with the same GUID when more than one attribute of the same type but with different GUIDs are stored in the file.
If attribute with default GUID has already been read, then adding next empty attribute of the same type (done at start of its reading) will fail; in such case another attempt is made with Null GUID.

new methods GetGDTPresentations(.) and GetGDTPresentations(.) for Dimension Tool

Update "Building with Xcode" documentation

0029266: Configuration - CMake install does not copy pdb files in Debug mode due to the changes in 0028287

Define variable "OCCT_INSTALL_BIN_LETTER" only if compiler is some version of Microsoft Visual C.

SelectMgr_RectangularFrustum::computeClippingRange() fix skipping depth range starting behind the ray.

The circles acceleration structure sizes are estimated using the required deflection and the complexity of the face.

Information on replacement of CDM_MessageDriver by Message_Messenger is added in the upgrade guide.
This replacement is recorded as rename in upgrade.dat

- XCAFNoteObjects_NoteObject transfer object for note's auxiliary data was added. It contains the following fields:
  text and attachment positions, note plane and tesselated presentation
- GetObject/SetObject methods were added to XCAFDoc_Note attribute. The following sub-labels were added to handle transfer object:
  1 - text position
  2 - note plane
  3 - attachment point
  4 - tesselated presentation
- documentation updated

Off-topic: procedure genproj now gives meaningful error message if new package is added but not listed in UDLIST

TInspector documentation is updated

Added wire connectivity requirement to class documentation of
BRepAdaptor_CompCurve.

Numbers and screenshots have been updated in the overview to correspond to V7.3.0.

In the method STEPCAFControl_Reader::ExpandShell protection for case when entity ""Connected_Face_Set" contains not only "FACE" entities ( for example "VERTEX_POINT" entities) was added.

Grammar errors and formatting issues have been fixed.

Recent modifications and additions in the user and dev guides have been reviewed (except for upgrade.md and inspector.md).

0029764: Foundation Classes, TColStd_MapIteratorOfPackedMapOfInteger - workaround Visual Studio Linker bug with enabled CLI

OpenGl_Structure::Render(), added missing check for disabled state of the plane.
vclipplane command has been extended with new option -setOverrideGlobal.

The API classes in the package BRepAlgo providing access to old Boolean operations (Fuse, Common, Cut, Section) are marked as deprecated.
Corresponding classes from the package BRepAlgoAPI should be used instead.