0029312: Using OBB to speed up Boolean Operations

1. Implementation of the user-defined option for usage of Oriented Bounding Boxes (OBB) in Boolean Operations for additional filtering (rejection) of selected for intersection pairs of sub-shapes.

By default the usage of OBB is turned off.
To enable/disable its usage the method SetUseOBB(flag) should be used. This method is available for all operations in Boolean Component.
To enable/disable it in draw the command "buseobb 0/1" should be used. Note, that this will affect all subsequent operations.

The OBB for the shapes are built by first necessity and stored into operation context (IntTools_Context).

2. Usage of the OBB in some test cases.

src/BRepAlgoAPI/BRepAlgoAPI_Algo.hxx

@@ -55,6 +55,7 @@ public:
   using BOPAlgo_Options::ClearWarnings;
   using BOPAlgo_Options::GetReport;
   using BOPAlgo_Options::SetProgressIndicator;
+  using BOPAlgo_Options::SetUseOBB;
 
 protected:
 

src/BRepAlgoAPI/BRepAlgoAPI_BooleanOperation.cxx

@@ -311,6 +311,7 @@ void BRepAlgoAPI_BooleanOperation::Build()
     myDSFiller->SetFuzzyValue(myFuzzyValue);
     myDSFiller->SetNonDestructive(myNonDestructive);
     myDSFiller->SetGlue(myGlue);
+    myDSFiller->SetUseOBB(myUseOBB);
     //
     SetAttributes();
     //

src/BRepAlgoAPI/BRepAlgoAPI_BuilderAlgo.cxx

@@ -145,6 +145,7 @@ void BRepAlgoAPI_BuilderAlgo::Build()
     myDSFiller->SetFuzzyValue(myFuzzyValue);
     myDSFiller->SetNonDestructive(myNonDestructive);
     myDSFiller->SetGlue(myGlue);
+    myDSFiller->SetUseOBB(myUseOBB);
     //
     myDSFiller->Perform();
     //

src/BRepAlgoAPI/BRepAlgoAPI_Splitter.cxx

@@ -98,6 +98,7 @@ void BRepAlgoAPI_Splitter::Build()
     myDSFiller->SetFuzzyValue(myFuzzyValue);
     myDSFiller->SetNonDestructive(myNonDestructive);
     myDSFiller->SetGlue(myGlue);
+    myDSFiller->SetUseOBB(myUseOBB);
     //
     myDSFiller->Perform();
     //