Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 191 insertions, 0 deletions

diff --git a/basegfx/source/vector/b2dvector.cxx b/basegfx/source/vector/b2dvector.cxx
new file mode 100644
index 000000000..1ad51a9b5
--- /dev/null
+++ b/basegfx/source/vector/b2dvector.cxx
@@ -0,0 +1,191 @@
+/* -*- 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 .
+ */
+
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/numeric/ftools.hxx>
+
+namespace basegfx
+{
+    B2DVector& B2DVector::normalize()
+    {
+        double fLen(scalar(*this));
+
+        if(fTools::equalZero(fLen))
+        {
+            mfX = 0.0;
+            mfY = 0.0;
+        }
+        else
+        {
+            const double fOne(1.0);
+
+            if(!fTools::equal(fOne, fLen))
+            {
+                fLen = sqrt(fLen);
+
+                if(!fTools::equalZero(fLen))
+                {
+                    mfX /= fLen;
+                    mfY /= fLen;
+                }
+            }
+        }
+
+        return *this;
+    }
+
+    B2DVector& B2DVector::operator=( const B2DTuple& rVec )
+    {
+        mfX = rVec.getX();
+        mfY = rVec.getY();
+        return *this;
+    }
+
+    double B2DVector::getLength() const
+    {
+        if(fTools::equalZero(mfX))
+        {
+            return fabs(mfY);
+        }
+        else if(fTools::equalZero(mfY))
+        {
+            return fabs(mfX);
+        }
+
+        return hypot( mfX, mfY );
+    }
+
+    double B2DVector::angle( const B2DVector& rVec ) const
+    {
+        return atan2(mfX * rVec.getY() - mfY * rVec.getX(),
+            mfX * rVec.getX() + mfY * rVec.getY());
+    }
+
+    const B2DVector& B2DVector::getEmptyVector()
+    {
+        return static_cast<const B2DVector&>( B2DTuple::getEmptyTuple() );
+    }
+
+    B2DVector& B2DVector::operator*=( const B2DHomMatrix& rMat )
+    {
+        const double fTempX( rMat.get(0,0)*mfX +
+                            rMat.get(0,1)*mfY );
+        const double fTempY( rMat.get(1,0)*mfX +
+                            rMat.get(1,1)*mfY );
+        mfX = fTempX;
+        mfY = fTempY;
+
+        return *this;
+    }
+
+    B2DVector& B2DVector::setLength(double fLen)
+    {
+        double fLenNow(scalar(*this));
+
+        if(!fTools::equalZero(fLenNow))
+        {
+            const double fOne(1.0);
+
+            if(!fTools::equal(fOne, fLenNow))
+            {
+                fLen /= sqrt(fLenNow);
+            }
+
+            mfX *= fLen;
+            mfY *= fLen;
+        }
+
+        return *this;
+    }
+
+    bool areParallel( const B2DVector& rVecA, const B2DVector& rVecB )
+    {
+        const double fValA(rVecA.getX() * rVecB.getY());
+        const double fValB(rVecA.getY() * rVecB.getX());
+
+        return fTools::equal(fValA, fValB);
+    }
+
+    B2VectorOrientation getOrientation( const B2DVector& rVecA, const B2DVector& rVecB )
+    {
+        double fVal(rVecA.getX() * rVecB.getY() - rVecA.getY() * rVecB.getX());
+
+        if(fTools::equalZero(fVal))
+        {
+            return B2VectorOrientation::Neutral;
+        }
+
+        if(fVal > 0.0)
+        {
+            return B2VectorOrientation::Positive;
+        }
+        else
+        {
+            return B2VectorOrientation::Negative;
+        }
+    }
+
+    B2DVector getPerpendicular( const B2DVector& rNormalizedVec )
+    {
+        B2DVector aPerpendicular(-rNormalizedVec.getY(), rNormalizedVec.getX());
+        return aPerpendicular;
+    }
+
+    B2DVector getNormalizedPerpendicular( const B2DVector& rVec )
+    {
+        B2DVector aPerpendicular(rVec);
+        aPerpendicular.normalize();
+        const double aTemp(-aPerpendicular.getY());
+        aPerpendicular.setY(aPerpendicular.getX());
+        aPerpendicular.setX(aTemp);
+        return aPerpendicular;
+    }
+
+    B2DVector operator*( const B2DHomMatrix& rMat, const B2DVector& rVec )
+    {
+        B2DVector aRes( rVec );
+        aRes *= rMat;
+        return aRes;
+    }
+
+    B2VectorContinuity getContinuity(const B2DVector& rBackVector, const B2DVector& rForwardVector )
+    {
+        if(rBackVector.equalZero() || rForwardVector.equalZero())
+        {
+            return B2VectorContinuity::NONE;
+        }
+
+        if(fTools::equal(rBackVector.getX(), -rForwardVector.getX()) && fTools::equal(rBackVector.getY(), -rForwardVector.getY()))
+        {
+            // same direction and same length -> C2
+            return B2VectorContinuity::C2;
+        }
+
+        if(areParallel(rBackVector, rForwardVector) && rBackVector.scalar(rForwardVector) < 0.0)
+        {
+            // parallel and opposite direction -> C1
+            return B2VectorContinuity::C1;
+        }
+
+        return B2VectorContinuity::NONE;
+    }
+} // end of namespace basegfx
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */