Integration of OCCT 6.5.0 from SVN

src/HLRBRep/HLRBRep_BSurfaceTool.cxx

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+//-- File       : HLRBRep_BSurfaceTool.cxx 
+//-- Created    : Wed Jui 7 18:00:00 1993
+//-- Author     : Laurent BUCHARD
+//--              <lbr@nonox>
+//-- Copyright:	 Matra Datavision 1993
+
+#include <HLRBRep_BSurfaceTool.ixx>
+#include <BRepAdaptor_Surface.hxx>
+
+//=======================================================================
+//function : NbSamplesU
+//purpose  : 
+//=======================================================================
+
+Standard_Integer
+HLRBRep_BSurfaceTool::NbSamplesU(const BRepAdaptor_Surface& S)
+{ 
+  Standard_Integer nbs;
+  GeomAbs_SurfaceType typS = S.GetType();
+  switch(typS) { 
+  case GeomAbs_Plane:
+    {
+      nbs = 2;
+    }
+    break;
+  case GeomAbs_BezierSurface: 
+    {
+      nbs =  3 + S.NbUPoles();
+    }
+    break;
+  case GeomAbs_BSplineSurface: 
+    {
+      nbs = S.NbUKnots();
+      nbs*= S.UDegree();
+      if(nbs < 2) nbs=2;
+      
+    }
+    break;
+  case GeomAbs_Torus: 
+    {
+      nbs = 20;
+    }
+    break;
+  case GeomAbs_Cylinder:
+  case GeomAbs_Cone:
+  case GeomAbs_Sphere:
+  case GeomAbs_SurfaceOfRevolution:
+  case GeomAbs_SurfaceOfExtrusion:
+    {
+      nbs = 10;
+    }
+    break;
+    
+  default: 
+    {
+      nbs = 10;
+    }
+    break;
+  }
+  return(nbs);
+}
+
+//=======================================================================
+//function : NbSamplesV
+//purpose  : 
+//=======================================================================
+
+Standard_Integer
+HLRBRep_BSurfaceTool::NbSamplesV(const BRepAdaptor_Surface& S)
+{ 
+  Standard_Integer nbs;
+  GeomAbs_SurfaceType typS = S.GetType();
+  switch(typS) { 
+  case GeomAbs_Plane:
+    {
+      nbs = 2;
+    }
+    break;
+  case GeomAbs_BezierSurface: 
+    {
+      nbs =  3 + S.NbVPoles();
+    }
+    break;
+  case GeomAbs_BSplineSurface: 
+    {
+      nbs = S.NbVKnots();
+      nbs*= S.VDegree();
+      if(nbs < 2) nbs=2;
+      
+    }
+    break;
+  case GeomAbs_Cylinder:
+  case GeomAbs_Cone:
+  case GeomAbs_Sphere:
+  case GeomAbs_Torus:
+  case GeomAbs_SurfaceOfRevolution:
+  case GeomAbs_SurfaceOfExtrusion:
+    {
+      nbs = 15;
+    }
+    break;
+    
+  default: 
+    {
+      nbs = 10;
+    }
+    break;
+  }
+  return(nbs);
+}
+
+//=======================================================================
+//function : NbSamplesU
+//purpose  : 
+//=======================================================================
+
+Standard_Integer
+HLRBRep_BSurfaceTool::NbSamplesU(const BRepAdaptor_Surface& S,
+				 const Standard_Real u1,
+				 const Standard_Real u2)
+{ 
+  Standard_Integer nbs = NbSamplesU(S);
+  Standard_Integer n = nbs;
+  if(nbs>10) { 
+    Standard_Real uf = FirstUParameter(S);
+    Standard_Real ul = LastUParameter(S);
+    n*= (Standard_Integer)((u2-u1)/(uf-ul));
+    if(n>nbs) n = nbs;
+    if(n<5)   n = 5;
+  }
+  return(n);
+}
+
+//=======================================================================
+//function : NbSamplesV
+//purpose  : 
+//=======================================================================
+
+Standard_Integer
+HLRBRep_BSurfaceTool::NbSamplesV(const BRepAdaptor_Surface& S,
+				 const Standard_Real v1,
+				 const Standard_Real v2)
+{ 
+  Standard_Integer nbs = NbSamplesV(S);
+  Standard_Integer n = nbs;
+  if(nbs>10) { 
+    Standard_Real vf = FirstVParameter(S);
+    Standard_Real vl = LastVParameter(S);
+    n*= (Standard_Integer)((v2-v1)/(vf-vl));
+    if(n>nbs) n = nbs;
+    if(n<5)   n = 5;
+  }
+  return(n);
+}
+