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 // Created on: 1994-11-16
 // Created by: Christian CAILLET
 // Copyright (c) 1994-1999 Matra Datavision
 // Copyright (c) 1999-2014 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _IGESConvGeom_GeomBuilder_HeaderFile
 #define _IGESConvGeom_GeomBuilder_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <gp_XYZ.hxx>
 #include <NCollection_Sequence.hxx>
 #include <NCollection_HSequence.hxx>
 #include <gp_Trsf.hxx>
 #include <Standard_Integer.hxx>
 class gp_XY;
 class gp_XYZ;
 class IGESGeom_CopiousData;
 class gp_Ax3;
 class gp_Ax2;
 class gp_Ax1;
 class IGESGeom_TransformationMatrix;
 
 //! This class provides some useful basic tools to build IGESGeom
 //! curves, especially :
 //! define a curve in a plane in 3D space (ex. Circular or Conic
 //! arc, or Copious Data defined in 2D)
 //! make a CopiousData from a list of points/vectors
 class IGESConvGeom_GeomBuilder
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   //! Creates a GeomBuilder at initial state.
   Standard_EXPORT IGESConvGeom_GeomBuilder();
 
   //! Clears list of Points/Vectors and data about Transformation
   Standard_EXPORT void Clear();
 
   //! Adds a XY (Z=0) to the list of points
   Standard_EXPORT void AddXY(const gp_XY& val);
 
   //! Adds a XYZ to the list of points
   Standard_EXPORT void AddXYZ(const gp_XYZ& val);
 
   //! Adds a Vector part to the list of points. It will be used
   //! for CopiousData, datatype=3, only.
   //! AddXY and AddXYZ consider a null vector part (0,0,0)
   //! AddVec adds to the last added XY or XYZ
   Standard_EXPORT void AddVec(const gp_XYZ& val);
 
   //! Returns the count of already recorded points
   Standard_EXPORT int NbPoints() const;
 
   //! Returns a point given its rank (if added as XY, Z will be 0)
   Standard_EXPORT gp_XYZ Point(const int num) const;
 
   //! Makes a CopiousData with the list of recorded Points/Vectors
   //! according to <datatype>, which must be 1,2 or 3
   //! If <polyline> is given True, the CopiousData is coded as a
   //! Polyline, but <datatype> must not be 3
   //! <datatype> = 1 : Common Z is computed as average of all Z
   //! <datatype> = 1 or 2 : Vectors are ignored
   Standard_EXPORT occ::handle<IGESGeom_CopiousData> MakeCopiousData(
     const int  datatype,
     const bool polyline = false) const;
 
   //! Returns the Position in which the method EvalXYZ will
   //! evaluate a XYZ. It can be regarded as defining a local system.
   //! It is initially set to Identity
   Standard_EXPORT gp_Trsf Position() const;
 
   //! Sets final position from an already defined Trsf
   Standard_EXPORT void SetPosition(const gp_Trsf& pos);
 
   //! Sets final position from an Ax3
   Standard_EXPORT void SetPosition(const gp_Ax3& pos);
 
   //! Sets final position from an Ax2
   Standard_EXPORT void SetPosition(const gp_Ax2& pos);
 
   //! Sets final position from an Ax1
   //! (this means that origin point and Z-axis are defined, the
   //! other axes are defined arbitrarily)
   Standard_EXPORT void SetPosition(const gp_Ax1& pos);
 
   //! Returns True if the Position is Identity
   Standard_EXPORT bool IsIdentity() const;
 
   //! Returns True if the Position is a Translation only
   //! Remark : Identity and ZOnly will answer True
   Standard_EXPORT bool IsTranslation() const;
 
   //! Returns True if the Position corresponds to a Z-Displacement,
   //! i.e. is a Translation only, and only on Z
   //! Remark : Identity will answer True
   Standard_EXPORT bool IsZOnly() const;
 
   //! Evaluates a XYZ value in the Position already defined.
   //! Returns the transformed coordinates.
   //! For a 2D definition, X,Y will then be used to define a XY and
   //! Z will be regarded as a Z Displacement (can be ignored)
   Standard_EXPORT void EvalXYZ(const gp_XYZ& val, double& X, double& Y, double& Z) const;
 
   //! Returns the IGES Transformation which corresponds to the
   //! Position. Even if it is an Identity : IsIdentity should be
   //! tested first.
   //! <unit> is the unit value in which the model is created :
   //! it is used to convert translation part
   Standard_EXPORT occ::handle<IGESGeom_TransformationMatrix> MakeTransformation(
     const double unit = 1) const;
 
 private:
   occ::handle<NCollection_HSequence<gp_XYZ>> theXYZ;
   occ::handle<NCollection_HSequence<gp_XYZ>> theVec;
   gp_Trsf                                    thepos;
 };
 
 #endif // _IGESConvGeom_GeomBuilder_HeaderFile

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