// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
-#include <Contap_SurfProps.ixx>
-#include <ElSLib.hxx>
+#include <Adaptor3d_HSurface.hxx>
#include <Adaptor3d_HSurfaceTool.hxx>
+#include <Contap_SurfProps.hxx>
+#include <ElSLib.hxx>
+#include <gp_Pnt.hxx>
+#include <gp_Vec.hxx>
//=======================================================================
//function : Normale
//purpose :
//=======================================================================
-
void Contap_SurfProps::Normale(const Handle(Adaptor3d_HSurface)& S,
const Standard_Real U,
const Standard_Real V,