Coding - Translate French comments and modernize constants (#932)

This commit performs safe code cleanup across multiple modules:

1. French to English comment translations:
   - ApplicationFramework: TNaming, TDF, TDataStd packages
   - ModelingAlgorithms: BRepFill, TopOpeBRepBuild, TopOpeBRepTool,
     NLPlate, FairCurve, IntSurf, Contap, ShapeFix, MAT2d, LocOpe
   - ModelingData: ProjLib, GeomLib, GeomConvert, IntAna, AppDef,
     GCPnts, Hermit, BinTools, LProp
   - Visualization: PrsDim, AIS, V3d packages

2. Constexpr modernization:
   - Convert static const variables to constexpr
   - Replace #define macros with constexpr variables
   - Add anonymous namespaces for internal constants
   - Affected files: V3d_View, V3d_CircularGrid, V3d_RectangularGrid,
     Graphic3d_FrameStats, PrsDim_*, Convert_*ToBSplineSurface,
     math_BrentMinimum, and others

3. Code organization:
   - Wrap file-scope constants in anonymous namespaces
   - Use consistent naming convention (THE_* prefix)

No functional changes - all modifications are comment-only or
compile-time constant improvements that preserve identical runtime
behavior.

src/ModelingAlgorithms/TKBool/BRepFill/BRepFill_CompatibleWires.cxx

@@ -2089,7 +2089,7 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean /*polar*/)
       else
       {
 
-        // recherche du vertex correspondant a la projection conique
+        // search for the vertex corresponding to the conical projection
         Standard_Real angmin, angV, eta = Precision::Angular();
         TopoDS_Vertex Vopti;
         angmin   = M_PI / 2;
@@ -2170,7 +2170,7 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean /*polar*/)
       }
       else
       {
-        // cas general
+        // general case
         gp_Pnt        Pbout = Pnext;
         TopoDS_Edge   E1, E2;
         TopoDS_Vertex V1, V2;
@@ -2207,7 +2207,7 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean /*polar*/)
 
         if (std::abs(Pbout.Distance(P1) - Pbout.Distance(P2)) < Precision::Confusion())
         {
-          // cas limite ; on se decale un peu
+          // edge case; shifting a bit
           Pbout = PPn;
           BRepAdaptor_Curve Curve1(E1);
           P1 = Curve1.Value(U1);
@@ -2215,11 +2215,11 @@ void BRepFill_CompatibleWires::ComputeOrigin(const Standard_Boolean /*polar*/)
           P2 = Curve2.Value(U2);
         }
 
-        // calcul de rangdeb
+        // compute rangdeb
         rangdeb = 0;
         if (Pbout.Distance(P1) < Pbout.Distance(P2))
         {
-          // P1 est plus proche; parcours = False
+          // P1 is closer; parcours = False
           parcours = Standard_False;
           rang     = 0;
           for (anExp.Init(wire); anExp.More(); anExp.Next())
@@ -2403,7 +2403,7 @@ void BRepFill_CompatibleWires::SearchOrigin()
           if (ang < -M_PI/2.0)
             ang = -M_PI - ang;
           if (std::abs(ang-M_PI/2.0)<Precision::Angular()) {
-            // cas d'ambiguite
+            // ambiguity case
             gp_Vec Vtrans(P0.Location(),P.Location()),Vsign;
             Standard_Real alpha,beta,sign=1;
             Vsign.SetLinearForm(Vtrans.Dot(vec1),vec2,-Vtrans.Dot(vec2),vec1);

src/ModelingAlgorithms/TKBool/TopOpeBRepBuild/TopOpeBRepBuild_CompositeClassifier.cxx

@@ -22,9 +22,9 @@
 
 #define MYBB ((TopOpeBRepBuild_BlockBuilder*)myBlockBuilder)
 
-// sourvenir d'un raise sur FrozenShape lors du Add(myShell,aFace)
-// avec un shell qui a ete deja ete place dans le solide interne du
-// TopOpeBRepTool_SolidClassifier par LoadShell.
+// reminder of a raise on FrozenShape during Add(myShell,aFace)
+// with a shell that has already been placed in the internal solid of
+// TopOpeBRepTool_SolidClassifier by LoadShell.
 
 #ifdef OCCT_DEBUG
 // static Standard_Integer dddjyl = 0;

src/ModelingAlgorithms/TKBool/TopOpeBRepBuild/TopOpeBRepBuild_FuseFace.cxx

@@ -235,7 +235,7 @@ void TopOpeBRepBuild_FuseFace::PerformFace()
     return;
   }
 
-  // boucle sur les listes des faces de 1 face de LRF
+  // loop over the face lists for each face in LRF
 
   for (itt1.Initialize(mapFacLFac); itt1.More(); itt1.Next())
   {
@@ -591,7 +591,7 @@ void TopOpeBRepBuild_FuseFace::PerformEdge()
   //  TopAbs_Orientation ori,ori1;
 
   // Niveau 1
-  // boucle sur les listes des faces de 1 face de LRF
+  // loop over the face lists for each face in LRF
 
   for (it1.Initialize(myLFF); it1.More(); it1.Next())
   {
@@ -685,7 +685,7 @@ void TopOpeBRepBuild_FuseFace::ClearEdge()
   TopTools_ListOfShape               myLFFnew;
 
   // Niveau 1
-  // boucle sur les listes des faces de 1 face de LRF
+  // loop over the face lists for each face in LRF
 
   for (it1.Initialize(myLFF); it1.More(); it1.Next())
   {

src/ModelingAlgorithms/TKBool/TopOpeBRepTool/TopOpeBRepTool_SolidClassifier.cxx

@@ -110,9 +110,9 @@ TopAbs_State TopOpeBRepTool_SolidClassifier::Classify(const TopoDS_Solid& SOL,
   const TopoDS_Shape& fres = myPClassifier->Face();
   if (fres.IsNull())
   {
-    // NYI : en cas d'elimination des faces EXTERNAL et INTERNAL par le
-    // classifier BRepClass3d_SolidClassifier, traiter quand meme ces faces
-    // pour generer l'etat ON/Solid quand le point est IN/face INTERNAL ou EXTERNAL
+    // NYI: in case of elimination of EXTERNAL and INTERNAL faces by the
+    // BRepClass3d_SolidClassifier classifier, still handle these faces
+    // to generate ON/Solid state when the point is IN/face INTERNAL or EXTERNAL
     return myState;
   }
   TopAbs_Orientation ofres = fres.Orientation();