/* -*- 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 /* * 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 occurred. Only in this case memory for the * coefficient array has been allocated, which can be freed by the caller * using a delete. */ bool CalcSpline(tools::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); /* * Converts a parametrised cubic spline (natural or periodic) to an approximate * polygon. The function returns false, if an error occurred 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(tools::Polygon& rSpln, bool Periodic, tools::Polygon& rPoly); #endif // INCLUDED_VCL_SOURCE_FILTER_SGVSPLN_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */