--- /dev/null
+// Copyright (c) 2015-... 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 _CSLib_Offset_Headerfile
+#define _CSLib_Offset_Headerfile
+
+#include <gp_Dir.hxx>
+#include <gp_Pnt.hxx>
+#include <gp_Pnt2d.hxx>
+#include <gp_Vec.hxx>
+#include <gp_Vec2d.hxx>
+#include <Standard.hxx>
+
+/** \namespace CSLib_Offset
+ * \brief Provides a number of static methods to calculate values and derivatives
+ * of an offset curves and surfaces using values and derivatives of
+ * a base curve/surface.
+ */
+namespace CSLib_Offset
+{
+ /** \brief Calculate value of offset curve in 2D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseDeriv derivative on a base curve
+ * \param[in] theOffset size of offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative (not used)
+ * \param[out] theResPoint point on offset curve
+ */
+ Standard_EXPORT void D0(const gp_Pnt2d& theBasePoint,
+ const gp_Vec2d& theBaseDeriv,
+ Standard_Real theOffset,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt2d& theResPoint);
+ /** \brief Calculate value of offset curve in 3D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseDeriv derivative on a base curve
+ * \param[in] theOffsetDirection direction of the offset
+ * \param[in] theOffsetValue length of the offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative (not used)
+ * \param[out] theResPoint point on offset curve
+ */
+ Standard_EXPORT void D0(const gp_Pnt& theBasePoint,
+ const gp_Vec& theBaseDeriv,
+ const gp_Dir& theOffsetDirection,
+ Standard_Real theOffsetValue,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt& theResPoint);
+
+
+ /** \brief Calculate value and the first derivative of offset curve in 2D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theOffset size of offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative (not used)
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResDeriv derivative on offset curve
+ */
+ Standard_EXPORT void D1(const gp_Pnt2d& theBasePoint,
+ const gp_Vec2d& theBaseD1,
+ const gp_Vec2d& theBaseD2,
+ Standard_Real theOffset,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt2d& theResPoint,
+ gp_Vec2d& theResDeriv);
+ /** \brief Calculate value and the first derivative of offset curve in 3D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theOffsetDirection direction of the offset
+ * \param[in] theOffsetValue length of the offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative (not used)
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResDeriv derivative on offset curve
+ */
+ Standard_EXPORT void D1(const gp_Pnt& theBasePoint,
+ const gp_Vec& theBaseD1,
+ const gp_Vec& theBaseD2,
+ const gp_Dir& theOffsetDirection,
+ Standard_Real theOffsetValue,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt& theResPoint,
+ gp_Vec& theResDeriv);
+
+
+ /** \brief Calculate value and two derivatives of offset curve in 2D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theBaseD3 third derivative on a base curve
+ * \param[in] theOffset size of offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResD1 first derivative on offset curve
+ * \param[out] theResD2 second derivative on offset curve
+ */
+ Standard_EXPORT void D2(const gp_Pnt2d& theBasePoint,
+ const gp_Vec2d& theBaseD1,
+ const gp_Vec2d& theBaseD2,
+ const gp_Vec2d& theBaseD3,
+ Standard_Real theOffset,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt2d& theResPoint,
+ gp_Vec2d& theResD1,
+ gp_Vec2d& theResD2);
+ /** \brief Calculate value and two derivatives of offset curve in 3D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theBaseD3 third derivative on a base curve
+ * \param[in] theOffsetDirection direction of the offset
+ * \param[in] theOffsetValue length of the offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResD1 first derivative on offset curve
+ * \param[out] theResD2 second derivative on offset curve
+ */
+ Standard_EXPORT void D2(const gp_Pnt& theBasePoint,
+ const gp_Vec& theBaseD1,
+ const gp_Vec& theBaseD2,
+ const gp_Vec& theBaseD3,
+ const gp_Dir& theOffsetDirection,
+ Standard_Real theOffsetValue,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt& theResPoint,
+ gp_Vec& theResD1,
+ gp_Vec& theResD2);
+
+ /** \brief Calculate value and three derivatives of offset curve in 2D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theBaseD3 third derivative on a base curve
+ * \param[in] theBaseD4 fourth derivative on a base curve
+ * \param[in] theOffset size of offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResD1 first derivative on offset curve
+ * \param[out] theResD2 second derivative on offset curve
+ * \param[out] theResD3 third derivative on offset curve
+ */
+ Standard_EXPORT void D3(const gp_Pnt2d& theBasePoint,
+ const gp_Vec2d& theBaseD1,
+ const gp_Vec2d& theBaseD2,
+ const gp_Vec2d& theBaseD3,
+ const gp_Vec2d& theBaseD4,
+ Standard_Real theOffset,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt2d& theResPoint,
+ gp_Vec2d& theResD1,
+ gp_Vec2d& theResD2,
+ gp_Vec2d& theResD3);
+ /** \brief Calculate value and three derivatives of offset curve in 3D
+ * \param[in] theBasePoint point on a base curve
+ * \param[in] theBaseD1 first derivative on a base curve
+ * \param[in] theBaseD2 second derivative on a base curve
+ * \param[in] theBaseD3 third derivative on a base curve
+ * \param[in] theBaseD4 fourth derivative on a base curve
+ * \param[in] theOffsetDirection direction of the offset
+ * \param[in] theOffsetValue length of the offset
+ * \param[in] theIsDirectionChange shows that it is necessary to consider the direction of derivative
+ * \param[out] theResPoint point on offset curve
+ * \param[out] theResD1 first derivative on offset curve
+ * \param[out] theResD2 second derivative on offset curve
+ * \param[out] theResD3 third derivative on offset curve
+ */
+ Standard_EXPORT void D3(const gp_Pnt& theBasePoint,
+ const gp_Vec& theBaseD1,
+ const gp_Vec& theBaseD2,
+ const gp_Vec& theBaseD3,
+ const gp_Vec& theBaseD4,
+ const gp_Dir& theOffsetDirection,
+ Standard_Real theOffsetValue,
+ Standard_Boolean theIsDirectionChange,
+ gp_Pnt& theResPoint,
+ gp_Vec& theResD1,
+ gp_Vec& theResD2,
+ gp_Vec& theResD3);
+}
+
+#endif // _CSLib_Offset_Headerfile