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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_SOURCE_FILTER_SGVSPLN_HXX
#define INCLUDED_VCL_SOURCE_FILTER_SGVSPLN_HXX
/*************************************************************************
|*
|* CalcSpline()
|*
|* Description Calculates the coefficients of parametrised
|* natural or periodic cubic polynom-splines.
|* The corner points of the polygon passed are used
|* as support points. n returns the number of partial polynoms.
|* This function returns TRUE if no error occured.
|* Only in this case memory for the coefficient array
|* has been allocated, which can be freed by the caller
|* using a delete.
|*
*************************************************************************/
bool CalcSpline(Polygon& rPoly, bool Periodic, sal_uInt16& n,
double*& ax, double*& ay, double*& bx, double*& by,
double*& cx, double*& cy, double*& dx, double*& dy, double*& T);
/*************************************************************************
|*
|* Spline2Poly()
|*
|* Description converts a parametrised cubic spline (natural
|* or periodic) to an approximate polygon.
|* The function returns false, if an error occured
|* during the calculation of the coefficients or
|* the polygon became too large (>PolyMax=16380).
|* In the first case the polygon has 0, in the
|* second case PolyMax points.
|* To prevent coordinate overflows we limit
|* them to +/-32000.
|*
*************************************************************************/
bool Spline2Poly(Polygon& rSpln, bool Periodic, Polygon& rPoly);
#endif // INCLUDED_VCL_SOURCE_FILTER_SGVSPLN_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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