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, 429 insertions, 0 deletions

diff --git a/basegfx/source/matrix/b2dhommatrix.cxx b/basegfx/source/matrix/b2dhommatrix.cxx
new file mode 100644
index 000000000..f3d2622db
--- /dev/null
+++ b/basegfx/source/matrix/b2dhommatrix.cxx
@@ -0,0 +1,429 @@
+/* -*- 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/matrix/b2dhommatrix.hxx>
+#include <hommatrixtemplate.hxx>
+#include <basegfx/tuple/b2dtuple.hxx>
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <memory>
+
+namespace basegfx
+{
+    typedef ::basegfx::internal::ImplHomMatrixTemplate< 3 > Impl2DHomMatrix_Base;
+    class Impl2DHomMatrix : public Impl2DHomMatrix_Base
+    {
+    };
+
+    static o3tl::cow_wrapper<Impl2DHomMatrix> DEFAULT;
+
+    B2DHomMatrix::B2DHomMatrix() : mpImpl(DEFAULT) {}
+
+    B2DHomMatrix::B2DHomMatrix(const B2DHomMatrix&) = default;
+
+    B2DHomMatrix::B2DHomMatrix(B2DHomMatrix&&) = default;
+
+    B2DHomMatrix::~B2DHomMatrix() = default;
+
+    B2DHomMatrix::B2DHomMatrix(double f_0x0, double f_0x1, double f_0x2, double f_1x0, double f_1x1, double f_1x2)
+    {
+        mpImpl->set(0, 0, f_0x0);
+        mpImpl->set(0, 1, f_0x1);
+        mpImpl->set(0, 2, f_0x2);
+        mpImpl->set(1, 0, f_1x0);
+        mpImpl->set(1, 1, f_1x1);
+        mpImpl->set(1, 2, f_1x2);
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator=(const B2DHomMatrix&) = default;
+
+    B2DHomMatrix& B2DHomMatrix::operator=(B2DHomMatrix&&) = default;
+
+    double B2DHomMatrix::get(sal_uInt16 nRow, sal_uInt16 nColumn) const
+    {
+        return mpImpl->get(nRow, nColumn);
+    }
+
+    void B2DHomMatrix::set(sal_uInt16 nRow, sal_uInt16 nColumn, double fValue)
+    {
+        mpImpl->set(nRow, nColumn, fValue);
+    }
+
+    void B2DHomMatrix::set3x2(double f_0x0, double f_0x1, double f_0x2, double f_1x0, double f_1x1, double f_1x2)
+    {
+        mpImpl->set(0, 0, f_0x0);
+        mpImpl->set(0, 1, f_0x1);
+        mpImpl->set(0, 2, f_0x2);
+        mpImpl->set(1, 0, f_1x0);
+        mpImpl->set(1, 1, f_1x1);
+        mpImpl->set(1, 2, f_1x2);
+    }
+
+    bool B2DHomMatrix::isLastLineDefault() const
+    {
+        return mpImpl->isLastLineDefault();
+    }
+
+    bool B2DHomMatrix::isIdentity() const
+    {
+        return mpImpl->isIdentity();
+    }
+
+    void B2DHomMatrix::identity()
+    {
+        *mpImpl = Impl2DHomMatrix();
+    }
+
+    bool B2DHomMatrix::isInvertible() const
+    {
+        return mpImpl->isInvertible();
+    }
+
+    bool B2DHomMatrix::invert()
+    {
+        if(isIdentity())
+        {
+            return true;
+        }
+
+        Impl2DHomMatrix aWork(*mpImpl);
+        std::unique_ptr<sal_uInt16[]> pIndex( new sal_uInt16[Impl2DHomMatrix_Base::getEdgeLength()] );
+        sal_Int16 nParity;
+
+        if(aWork.ludcmp(pIndex.get(), nParity))
+        {
+            mpImpl->doInvert(aWork, pIndex.get());
+            return true;
+        }
+
+        return false;
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator+=(const B2DHomMatrix& rMat)
+    {
+        mpImpl->doAddMatrix(*rMat.mpImpl);
+        return *this;
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator-=(const B2DHomMatrix& rMat)
+    {
+        mpImpl->doSubMatrix(*rMat.mpImpl);
+        return *this;
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator*=(double fValue)
+    {
+        const double fOne(1.0);
+
+        if(!fTools::equal(fOne, fValue))
+            mpImpl->doMulMatrix(fValue);
+
+        return *this;
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator/=(double fValue)
+    {
+        const double fOne(1.0);
+
+        if(!fTools::equal(fOne, fValue))
+            mpImpl->doMulMatrix(1.0 / fValue);
+
+        return *this;
+    }
+
+    B2DHomMatrix& B2DHomMatrix::operator*=(const B2DHomMatrix& rMat)
+    {
+        if(rMat.isIdentity())
+        {
+            // multiply with identity, no change -> nothing to do
+        }
+        else if(isIdentity())
+        {
+            // we are identity, result will be rMat -> assign
+            *this = rMat;
+        }
+        else
+        {
+            // multiply
+            mpImpl->doMulMatrix(*rMat.mpImpl);
+        }
+
+        return *this;
+    }
+
+    bool B2DHomMatrix::operator==(const B2DHomMatrix& rMat) const
+    {
+        if(mpImpl.same_object(rMat.mpImpl))
+            return true;
+
+        return mpImpl->isEqual(*rMat.mpImpl);
+    }
+
+    bool B2DHomMatrix::operator!=(const B2DHomMatrix& rMat) const
+    {
+        return !(*this == rMat);
+    }
+
+    void B2DHomMatrix::rotate(double fRadiant)
+    {
+        if(fTools::equalZero(fRadiant))
+            return;
+
+        double fSin(0.0);
+        double fCos(1.0);
+
+        utils::createSinCosOrthogonal(fSin, fCos, fRadiant);
+        Impl2DHomMatrix aRotMat;
+
+        aRotMat.set(0, 0, fCos);
+        aRotMat.set(1, 1, fCos);
+        aRotMat.set(1, 0, fSin);
+        aRotMat.set(0, 1, -fSin);
+
+        mpImpl->doMulMatrix(aRotMat);
+    }
+
+    void B2DHomMatrix::translate(double fX, double fY)
+    {
+        if(!fTools::equalZero(fX) || !fTools::equalZero(fY))
+        {
+            Impl2DHomMatrix aTransMat;
+
+            aTransMat.set(0, 2, fX);
+            aTransMat.set(1, 2, fY);
+
+            mpImpl->doMulMatrix(aTransMat);
+        }
+    }
+
+    void B2DHomMatrix::translate(const B2DTuple& rTuple)
+    {
+        translate(rTuple.getX(), rTuple.getY());
+    }
+
+    void B2DHomMatrix::scale(double fX, double fY)
+    {
+        const double fOne(1.0);
+
+        if(!fTools::equal(fOne, fX) || !fTools::equal(fOne, fY))
+        {
+            Impl2DHomMatrix aScaleMat;
+
+            aScaleMat.set(0, 0, fX);
+            aScaleMat.set(1, 1, fY);
+
+            mpImpl->doMulMatrix(aScaleMat);
+        }
+    }
+
+    void B2DHomMatrix::scale(const B2DTuple& rTuple)
+    {
+        scale(rTuple.getX(), rTuple.getY());
+    }
+
+    void B2DHomMatrix::shearX(double fSx)
+    {
+        // #i76239# do not test against 1.0, but against 0.0. We are talking about a value not on the diagonal (!)
+        if(!fTools::equalZero(fSx))
+        {
+            Impl2DHomMatrix aShearXMat;
+
+            aShearXMat.set(0, 1, fSx);
+
+            mpImpl->doMulMatrix(aShearXMat);
+        }
+    }
+
+    void B2DHomMatrix::shearY(double fSy)
+    {
+        // #i76239# do not test against 1.0, but against 0.0. We are talking about a value not on the diagonal (!)
+        if(!fTools::equalZero(fSy))
+        {
+            Impl2DHomMatrix aShearYMat;
+
+            aShearYMat.set(1, 0, fSy);
+
+            mpImpl->doMulMatrix(aShearYMat);
+        }
+    }
+
+    /** Decomposition
+
+       New, optimized version with local shearX detection. Old version (keeping
+       below, is working well, too) used the 3D matrix decomposition when
+       shear was used. Keeping old version as comment below since it may get
+       necessary to add the determinant() test from there here, too.
+    */
+    bool B2DHomMatrix::decompose(B2DTuple& rScale, B2DTuple& rTranslate, double& rRotate, double& rShearX) const
+    {
+        // when perspective is used, decompose is not made here
+        if(!mpImpl->isLastLineDefault())
+        {
+            return false;
+        }
+
+        // reset rotate and shear and copy translation values in every case
+        rRotate = rShearX = 0.0;
+        rTranslate.setX(get(0, 2));
+        rTranslate.setY(get(1, 2));
+
+        // test for rotation and shear
+        if(fTools::equalZero(get(0, 1)) && fTools::equalZero(get(1, 0)))
+        {
+            // no rotation and shear, copy scale values
+            rScale.setX(get(0, 0));
+            rScale.setY(get(1, 1));
+
+            // or is there?
+            if( rScale.getX() < 0 && rScale.getY() < 0 )
+            {
+                // there is - 180 degree rotated
+                rScale *= -1;
+                rRotate = M_PI;
+            }
+        }
+        else
+        {
+            // get the unit vectors of the transformation -> the perpendicular vectors
+            B2DVector aUnitVecX(get(0, 0), get(1, 0));
+            B2DVector aUnitVecY(get(0, 1), get(1, 1));
+            const double fScalarXY(aUnitVecX.scalar(aUnitVecY));
+
+            // Test if shear is zero. That's the case if the unit vectors in the matrix
+            // are perpendicular -> scalar is zero. This is also the case when one of
+            // the unit vectors is zero.
+            if(fTools::equalZero(fScalarXY))
+            {
+                // calculate unsigned scale values
+                rScale.setX(aUnitVecX.getLength());
+                rScale.setY(aUnitVecY.getLength());
+
+                // check unit vectors for zero lengths
+                const bool bXIsZero(fTools::equalZero(rScale.getX()));
+                const bool bYIsZero(fTools::equalZero(rScale.getY()));
+
+                if(bXIsZero || bYIsZero)
+                {
+                    // still extract as much as possible. Scalings are already set
+                    if(!bXIsZero)
+                    {
+                        // get rotation of X-Axis
+                        rRotate = atan2(aUnitVecX.getY(), aUnitVecX.getX());
+                    }
+                    else if(!bYIsZero)
+                    {
+                        // get rotation of X-Axis. When assuming X and Y perpendicular
+                        // and correct rotation, it's the Y-Axis rotation minus 90 degrees
+                        rRotate = atan2(aUnitVecY.getY(), aUnitVecY.getX()) - M_PI_2;
+                    }
+
+                    // one or both unit vectors do not exist, determinant is zero, no decomposition possible.
+                    // Eventually used rotations or shears are lost
+                    return false;
+                }
+                else
+                {
+                    // no shear
+                    // calculate rotation of X unit vector relative to (1, 0)
+                    rRotate = atan2(aUnitVecX.getY(), aUnitVecX.getX());
+
+                    // use orientation to evtl. correct sign of Y-Scale
+                    const double fCrossXY(aUnitVecX.cross(aUnitVecY));
+
+                    if(fCrossXY < 0.0)
+                    {
+                        rScale.setY(-rScale.getY());
+                    }
+                }
+            }
+            else
+            {
+                // fScalarXY is not zero, thus both unit vectors exist. No need to handle that here
+                // shear, extract it
+                double fCrossXY(aUnitVecX.cross(aUnitVecY));
+
+                // get rotation by calculating angle of X unit vector relative to (1, 0).
+                // This is before the parallel test following the motto to extract
+                // as much as possible
+                rRotate = atan2(aUnitVecX.getY(), aUnitVecX.getX());
+
+                // get unsigned scale value for X. It will not change and is useful
+                // for further corrections
+                rScale.setX(aUnitVecX.getLength());
+
+                if(fTools::equalZero(fCrossXY))
+                {
+                    // extract as much as possible
+                    rScale.setY(aUnitVecY.getLength());
+
+                    // unit vectors are parallel, thus not linear independent. No
+                    // useful decomposition possible. This should not happen since
+                    // the only way to get the unit vectors nearly parallel is
+                    // a very big shearing. Anyways, be prepared for hand-filled
+                    // matrices
+                    // Eventually used rotations or shears are lost
+                    return false;
+                }
+                else
+                {
+                    // calculate the contained shear
+                    rShearX = fScalarXY / fCrossXY;
+
+                    if(!fTools::equalZero(rRotate))
+                    {
+                        // To be able to correct the shear for aUnitVecY, rotation needs to be
+                        // removed first. Correction of aUnitVecX is easy, it will be rotated back to (1, 0).
+                        aUnitVecX.setX(rScale.getX());
+                        aUnitVecX.setY(0.0);
+
+                        // for Y correction we rotate the UnitVecY back about -rRotate
+                        const double fNegRotate(-rRotate);
+                        const double fSin(sin(fNegRotate));
+                        const double fCos(cos(fNegRotate));
+
+                        const double fNewX(aUnitVecY.getX() * fCos - aUnitVecY.getY() * fSin);
+                        const double fNewY(aUnitVecY.getX() * fSin + aUnitVecY.getY() * fCos);
+
+                        aUnitVecY.setX(fNewX);
+                        aUnitVecY.setY(fNewY);
+                    }
+
+                    // Correct aUnitVecY and fCrossXY to fShear=0. Rotation is already removed.
+                    // Shear correction can only work with removed rotation
+                    aUnitVecY.setX(aUnitVecY.getX() - (aUnitVecY.getY() * rShearX));
+                    fCrossXY = aUnitVecX.cross(aUnitVecY);
+
+                    // calculate unsigned scale value for Y, after the corrections since
+                    // the shear correction WILL change the length of aUnitVecY
+                    rScale.setY(aUnitVecY.getLength());
+
+                    // use orientation to set sign of Y-Scale
+                    if(fCrossXY < 0.0)
+                    {
+                        rScale.setY(-rScale.getY());
+                    }
+                }
+            }
+        }
+
+        return true;
+    }
+} // end of namespace basegfx
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */