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| -rw-r--r-- | include/basegfx/tuple/b2dtuple.hxx | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/include/basegfx/tuple/b2dtuple.hxx b/include/basegfx/tuple/b2dtuple.hxx new file mode 100644 index 000000000..c47b7b898 --- /dev/null +++ b/include/basegfx/tuple/b2dtuple.hxx @@ -0,0 +1,177 @@ +/* -*- 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 . + */ + +#pragma once + +#include <sal/types.h> +#include <basegfx/basegfxdllapi.h> +#include <basegfx/tuple/Tuple2D.hxx> + +namespace basegfx +{ + class B2ITuple; + + /** Base class for all Points/Vectors with two double values + + This class provides all methods common to Point + and Vector classes which are derived from here. + + @derive Use this class to implement Points or Vectors + which are based on two double values + */ + class SAL_WARN_UNUSED B2DTuple : public Tuple2D<double> + { + public: + + /** Create a 2D Tuple + + The tuple is initialized to (0.0, 0.0) + */ + B2DTuple() + : Tuple2D(0.0, 0.0) + {} + + /** Create a 2D Tuple + + @param fX + This parameter is used to initialize the X-coordinate + of the 2D Tuple. + + @param fY + This parameter is used to initialize the Y-coordinate + of the 2D Tuple. + */ + B2DTuple(double fX, double fY) + : Tuple2D(fX, fY) + {} + + /** Create a copy of a 2D integer Tuple + + @param rTup + The 2D Tuple which will be copied. + */ + BASEGFX_DLLPUBLIC explicit B2DTuple(const B2ITuple& rTup); + + // operators + + B2DTuple operator-(void) const + { + return B2DTuple(-mfX, -mfY); + } + + BASEGFX_DLLPUBLIC static const B2DTuple& getEmptyTuple(); + }; + + // external operators + + + inline B2DTuple absolute(const B2DTuple& rTup) + { + B2DTuple aAbs( + fabs(rTup.getX()), + fabs(rTup.getY())); + return aAbs; + } + + inline B2DTuple interpolate(const B2DTuple& rOld1, const B2DTuple& rOld2, double t) + { + if(rOld1 == rOld2) + { + return rOld1; + } + else if(0.0 >= t) + { + return rOld1; + } + else if(1.0 <= t) + { + return rOld2; + } + else + { + return B2DTuple( + ((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(), + ((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY()); + } + } + + inline B2DTuple average(const B2DTuple& rOld1, const B2DTuple& rOld2) + { + return B2DTuple( + rtl_math_approxEqual(rOld1.getX(), rOld2.getX()) ? rOld1.getX() : (rOld1.getX() + rOld2.getX()) * 0.5, + rtl_math_approxEqual(rOld1.getY(), rOld2.getY()) ? rOld1.getY() : (rOld1.getY() + rOld2.getY()) * 0.5); + } + + inline B2DTuple operator+(const B2DTuple& rTupA, const B2DTuple& rTupB) + { + B2DTuple aSum(rTupA); + aSum += rTupB; + return aSum; + } + + inline B2DTuple operator-(const B2DTuple& rTupA, const B2DTuple& rTupB) + { + B2DTuple aSub(rTupA); + aSub -= rTupB; + return aSub; + } + + inline B2DTuple operator/(const B2DTuple& rTupA, const B2DTuple& rTupB) + { + B2DTuple aDiv(rTupA); + aDiv /= rTupB; + return aDiv; + } + + inline B2DTuple operator*(const B2DTuple& rTupA, const B2DTuple& rTupB) + { + B2DTuple aMul(rTupA); + aMul *= rTupB; + return aMul; + } + + inline B2DTuple operator*(const B2DTuple& rTup, double t) + { + B2DTuple aNew(rTup); + aNew *= t; + return aNew; + } + + inline B2DTuple operator*(double t, const B2DTuple& rTup) + { + B2DTuple aNew(rTup); + aNew *= t; + return aNew; + } + + inline B2DTuple operator/(const B2DTuple& rTup, double t) + { + B2DTuple aNew(rTup); + aNew /= t; + return aNew; + } + + /** Round double to nearest integer for 2D tuple + + @return the nearest integer for this tuple + */ + BASEGFX_DLLPUBLIC B2ITuple fround(const B2DTuple& rTup); +} // end of namespace basegfx + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |