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, 656 insertions, 0 deletions

diff --git a/basegfx/source/polygon/b2dpolypolygontools.cxx b/basegfx/source/polygon/b2dpolypolygontools.cxx
new file mode 100644
index 000000000..b49de907d
--- /dev/null
+++ b/basegfx/source/polygon/b2dpolypolygontools.cxx
@@ -0,0 +1,656 @@
+/* -*- 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/polygon/b2dpolypolygontools.hxx>
+#include <osl/diagnose.h>
+#include <com/sun/star/drawing/PolyPolygonBezierCoords.hpp>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/numeric/ftools.hxx>
+#include <rtl/math.hxx>
+
+#include <algorithm>
+#include <numeric>
+
+namespace basegfx::utils
+{
+        B2DPolyPolygon correctOrientations(const B2DPolyPolygon& rCandidate)
+        {
+            B2DPolyPolygon aRetval(rCandidate);
+            const sal_uInt32 nCount(aRetval.count());
+
+            for(sal_uInt32 a(0); a < nCount; a++)
+            {
+                const B2DPolygon& aCandidate(rCandidate.getB2DPolygon(a));
+                const B2VectorOrientation aOrientation(utils::getOrientation(aCandidate));
+                sal_uInt32 nDepth(0);
+
+                for(sal_uInt32 b(0); b < nCount; b++)
+                {
+                    if(b != a)
+                    {
+                        const B2DPolygon& aCompare(rCandidate.getB2DPolygon(b));
+
+                        if(utils::isInside(aCompare, aCandidate, true))
+                        {
+                            nDepth++;
+                        }
+                    }
+                }
+
+                const bool bShallBeHole((nDepth & 0x00000001) == 1);
+                const bool bIsHole(aOrientation == B2VectorOrientation::Negative);
+
+                if(bShallBeHole != bIsHole && aOrientation != B2VectorOrientation::Neutral)
+                {
+                    B2DPolygon aFlipped(aCandidate);
+                    aFlipped.flip();
+                    aRetval.setB2DPolygon(a, aFlipped);
+                }
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon correctOutmostPolygon(const B2DPolyPolygon& rCandidate)
+        {
+            const sal_uInt32 nCount(rCandidate.count());
+
+            if(nCount > 1)
+            {
+                for(sal_uInt32 a(0); a < nCount; a++)
+                {
+                    const B2DPolygon& aCandidate(rCandidate.getB2DPolygon(a));
+                    sal_uInt32 nDepth(0);
+
+                    for(sal_uInt32 b(0); b < nCount; b++)
+                    {
+                        if(b != a)
+                        {
+                            const B2DPolygon& aCompare(rCandidate.getB2DPolygon(b));
+
+                            if(utils::isInside(aCompare, aCandidate, true))
+                            {
+                                nDepth++;
+                            }
+                        }
+                    }
+
+                    if(!nDepth)
+                    {
+                        B2DPolyPolygon aRetval(rCandidate);
+
+                        if(a != 0)
+                        {
+                            // exchange polygon a and polygon 0
+                            aRetval.setB2DPolygon(0, aCandidate);
+                            aRetval.setB2DPolygon(a, rCandidate.getB2DPolygon(0));
+                        }
+
+                        // exit
+                        return aRetval;
+                    }
+                }
+            }
+
+            return rCandidate;
+        }
+
+        B2DPolyPolygon adaptiveSubdivideByDistance(const B2DPolyPolygon& rCandidate, double fDistanceBound)
+        {
+            if(rCandidate.areControlPointsUsed())
+            {
+                B2DPolyPolygon aRetval;
+
+                for(auto const& rPolygon : rCandidate)
+                {
+                    if(rPolygon.areControlPointsUsed())
+                    {
+                        aRetval.append(utils::adaptiveSubdivideByDistance(rPolygon, fDistanceBound));
+                    }
+                    else
+                    {
+                        aRetval.append(rPolygon);
+                    }
+                }
+
+                return aRetval;
+            }
+            else
+            {
+                return rCandidate;
+            }
+        }
+
+        B2DPolyPolygon adaptiveSubdivideByAngle(const B2DPolyPolygon& rCandidate, double fAngleBound)
+        {
+            if(rCandidate.areControlPointsUsed())
+            {
+                B2DPolyPolygon aRetval;
+
+                for(auto const& rPolygon : rCandidate)
+                {
+                    if(rPolygon.areControlPointsUsed())
+                    {
+                        aRetval.append(utils::adaptiveSubdivideByAngle(rPolygon, fAngleBound));
+                    }
+                    else
+                    {
+                        aRetval.append(rPolygon);
+                    }
+                }
+
+                return aRetval;
+            }
+            else
+            {
+                return rCandidate;
+            }
+        }
+
+        bool isInside(const B2DPolyPolygon& rCandidate, const B2DPoint& rPoint, bool bWithBorder)
+        {
+            if(rCandidate.count() == 1)
+            {
+                return isInside(rCandidate.getB2DPolygon(0), rPoint, bWithBorder);
+            }
+            else
+            {
+                sal_Int32 nInsideCount = std::count_if(rCandidate.begin(), rCandidate.end(), [rPoint, bWithBorder](B2DPolygon polygon){ return isInside(polygon, rPoint, bWithBorder); });
+
+                return (nInsideCount % 2);
+            }
+        }
+
+        B2DRange getRange(const B2DPolyPolygon& rCandidate)
+        {
+            B2DRange aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.expand(utils::getRange(rPolygon));
+            }
+
+            return aRetval;
+        }
+
+        double getSignedArea(const B2DPolyPolygon& rCandidate)
+        {
+            double fRetval(0.0);
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                fRetval += utils::getSignedArea(rPolygon);
+            }
+
+            return fRetval;
+        }
+
+        double getArea(const B2DPolyPolygon& rCandidate)
+        {
+            return fabs(getSignedArea(rCandidate));
+        }
+
+        void applyLineDashing(const B2DPolyPolygon& rCandidate, const std::vector<double>& rDotDashArray, B2DPolyPolygon* pLineTarget, double fFullDashDotLen)
+        {
+            if(fFullDashDotLen == 0.0 && !rDotDashArray.empty())
+            {
+                // calculate fFullDashDotLen from rDotDashArray
+                fFullDashDotLen = std::accumulate(rDotDashArray.begin(), rDotDashArray.end(), 0.0);
+            }
+
+            if(!(rCandidate.count() && fFullDashDotLen > 0.0))
+                return;
+
+            B2DPolyPolygon aLineTarget;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                applyLineDashing(
+                    rPolygon,
+                    rDotDashArray,
+                    pLineTarget ? &aLineTarget : nullptr,
+                    nullptr,
+                    fFullDashDotLen);
+
+                if(pLineTarget)
+                {
+                    pLineTarget->append(aLineTarget);
+                }
+            }
+        }
+
+        bool isInEpsilonRange(const B2DPolyPolygon& rCandidate, const B2DPoint& rTestPosition, double fDistance)
+        {
+            for(auto const& rPolygon : rCandidate)
+            {
+                if(isInEpsilonRange(rPolygon, rTestPosition, fDistance))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        B3DPolyPolygon createB3DPolyPolygonFromB2DPolyPolygon(const B2DPolyPolygon& rCandidate, double fZCoordinate)
+        {
+            B3DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(createB3DPolygonFromB2DPolygon(rPolygon, fZCoordinate));
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon createB2DPolyPolygonFromB3DPolyPolygon(const B3DPolyPolygon& rCandidate, const B3DHomMatrix& rMat)
+        {
+            B2DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(createB2DPolygonFromB3DPolygon(rPolygon, rMat));
+            }
+
+            return aRetval;
+        }
+
+        double getSmallestDistancePointToPolyPolygon(const B2DPolyPolygon& rCandidate, const B2DPoint& rTestPoint, sal_uInt32& rPolygonIndex, sal_uInt32& rEdgeIndex, double& rCut)
+        {
+            double fRetval(DBL_MAX);
+            const double fZero(0.0);
+            const sal_uInt32 nPolygonCount(rCandidate.count());
+
+            for(sal_uInt32 a(0); a < nPolygonCount; a++)
+            {
+                const B2DPolygon& aCandidate(rCandidate.getB2DPolygon(a));
+                sal_uInt32 nNewEdgeIndex;
+                double fNewCut(0.0);
+                const double fNewDistance(getSmallestDistancePointToPolygon(aCandidate, rTestPoint, nNewEdgeIndex, fNewCut));
+
+                if(fRetval == DBL_MAX || fNewDistance < fRetval)
+                {
+                    fRetval = fNewDistance;
+                    rPolygonIndex = a;
+                    rEdgeIndex = nNewEdgeIndex;
+                    rCut = fNewCut;
+
+                    if(fTools::equal(fRetval, fZero))
+                    {
+                        // already found zero distance, cannot get better. Ensure numerical zero value and end loop.
+                        fRetval = 0.0;
+                        break;
+                    }
+                }
+            }
+
+            return fRetval;
+        }
+
+        B2DPolyPolygon distort(const B2DPolyPolygon& rCandidate, const B2DRange& rOriginal, const B2DPoint& rTopLeft, const B2DPoint& rTopRight, const B2DPoint& rBottomLeft, const B2DPoint& rBottomRight)
+        {
+            B2DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(distort(rPolygon, rOriginal, rTopLeft, rTopRight, rBottomLeft, rBottomRight));
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon expandToCurve(const B2DPolyPolygon& rCandidate)
+        {
+            B2DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(expandToCurve(rPolygon));
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon growInNormalDirection(const B2DPolyPolygon& rCandidate, double fValue)
+        {
+            if(fValue != 0.0)
+            {
+                B2DPolyPolygon aRetval;
+
+                for(auto const& rPolygon : rCandidate)
+                {
+                    aRetval.append(growInNormalDirection(rPolygon, fValue));
+                }
+
+                return aRetval;
+            }
+            else
+            {
+                return rCandidate;
+            }
+        }
+
+        B2DPolyPolygon reSegmentPolyPolygon(const B2DPolyPolygon& rCandidate, sal_uInt32 nSegments)
+        {
+            B2DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(reSegmentPolygon(rPolygon, nSegments));
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon interpolate(const B2DPolyPolygon& rOld1, const B2DPolyPolygon& rOld2, double t)
+        {
+            OSL_ENSURE(rOld1.count() == rOld2.count(), "B2DPolyPolygon interpolate: Different geometry (!)");
+            B2DPolyPolygon aRetval;
+
+            for(sal_uInt32 a(0); a < rOld1.count(); a++)
+            {
+                aRetval.append(interpolate(rOld1.getB2DPolygon(a), rOld2.getB2DPolygon(a), t));
+            }
+
+            return aRetval;
+        }
+
+        bool isRectangle( const B2DPolyPolygon& rPoly )
+        {
+            // exclude some cheap cases first
+            if( rPoly.count() != 1 )
+                return false;
+
+            return isRectangle( rPoly.getB2DPolygon(0) );
+        }
+
+        // #i76891#
+        B2DPolyPolygon simplifyCurveSegments(const B2DPolyPolygon& rCandidate)
+        {
+            if(rCandidate.areControlPointsUsed())
+            {
+                B2DPolyPolygon aRetval;
+
+                for(auto const& rPolygon : rCandidate)
+                {
+                    aRetval.append(simplifyCurveSegments(rPolygon));
+                }
+
+                return aRetval;
+            }
+            else
+            {
+                return rCandidate;
+            }
+        }
+
+        B2DPolyPolygon snapPointsOfHorizontalOrVerticalEdges(const B2DPolyPolygon& rCandidate)
+        {
+            B2DPolyPolygon aRetval;
+
+            for(auto const& rPolygon : rCandidate)
+            {
+                aRetval.append(snapPointsOfHorizontalOrVerticalEdges(rPolygon));
+            }
+
+            return aRetval;
+        }
+
+        B2DPolyPolygon createSevenSegmentPolyPolygon(char nNumber, bool bLitSegments)
+        {
+            // config here
+            // {
+            const double fTotalSize=1.0;
+            const double fPosMiddleSegment=0.6;
+            const double fSegmentEndChopHoriz=0.08;
+            const double fSegmentEndChopVert =0.04;
+            // }
+            // config here
+
+            const double fLeft=0.0;
+            const double fRight=fTotalSize;
+            const double fTop=0.0;
+            const double fMiddle=fPosMiddleSegment;
+            const double fBottom=fTotalSize;
+
+            // from 0 to 5: pair of segment corner coordinates
+
+            // segment corner indices are these:
+
+            //   0 - 1
+            //   |   |
+            //   2 - 3
+            //   |   |
+            //   4 - 5
+
+            static const double corners[] =
+            {
+                fLeft,  fTop,
+                fRight, fTop,
+                fLeft,  fMiddle,
+                fRight, fMiddle,
+                fLeft,  fBottom,
+                fRight, fBottom
+            };
+
+            // from 0 to 9: which segments are 'lit' for this number?
+
+            // array denotes graph edges to traverse, with -1 means
+            // stop (the vertices are the corner indices from above):
+            //     0
+            //     -
+            // 1 |   | 2
+            //     - 3
+            // 4 |   | 5
+            //     -
+            //     6
+
+            static const int numbers[] =
+            {
+                1, 1, 1, 0, 1, 1, 1, // 0
+                0, 0, 1, 0, 0, 1, 0, // 1
+                1, 0, 1, 1, 1, 0, 1, // 2
+                1, 0, 1, 1, 0, 1, 1, // 3
+                0, 1, 1, 1, 0, 1, 0, // 4
+                1, 1, 0, 1, 0, 1, 1, // 5
+                1, 1, 0, 1, 1, 1, 1, // 6
+                1, 0, 1, 0, 0, 1, 0, // 1
+                1, 1, 1, 1, 1, 1, 1, // 8
+                1, 1, 1, 1, 0, 1, 1, // 9
+                0, 0, 0, 1, 0, 0, 0, // '-'
+                1, 1, 0, 1, 1, 0, 1, // 'E'
+            };
+
+            // maps segment index to two corner ids:
+            static const int index2corner[] =
+            {
+                0, 2,  // 0
+                0, 4,  // 1
+                2, 6,  // 2
+                4, 6,  // 3
+                4, 8,  // 4
+                6, 10, // 5
+                8, 10, // 6
+            };
+
+            B2DPolyPolygon aRes;
+            if( nNumber == '-' )
+            {
+                nNumber = 10;
+            }
+            else if( nNumber == 'E' )
+            {
+                nNumber = 11;
+            }
+            else if( nNumber == '.' )
+            {
+                if( bLitSegments )
+                    aRes.append(createPolygonFromCircle(B2DPoint(fTotalSize/2, fTotalSize),
+                                                        fSegmentEndChopHoriz));
+                return aRes;
+            }
+            else
+            {
+                nNumber=std::clamp<sal_uInt32>(nNumber,'0','9') - '0';
+            }
+
+            B2DPolygon aCurrSegment;
+            const size_t sliceSize=std::size(numbers)/12;
+            const int* pCurrSegment=numbers + nNumber*sliceSize;
+            for( size_t i=0; i<sliceSize; i++, pCurrSegment++)
+            {
+                if( !(*pCurrSegment ^ int(bLitSegments)) )
+                {
+                    const size_t j=2*i;
+                    aCurrSegment.clear();
+                    B2DPoint start(corners[index2corner[j]],
+                                   corners[index2corner[j]+1]  );
+                    B2DPoint end  (corners[index2corner[j+1]],
+                                   corners[index2corner[j+1]+1]);
+
+                    if( rtl::math::approxEqual(start.getX(), end.getX()) )
+                    {
+                        start.setY(start.getY()+fSegmentEndChopVert);
+                        end.setY(end.getY()-fSegmentEndChopVert);
+                    }
+                    else
+                    {
+                        start.setX(start.getX()+fSegmentEndChopHoriz);
+                        end.setX(end.getX()-fSegmentEndChopHoriz);
+                    }
+
+                    aCurrSegment.append(start);
+                    aCurrSegment.append(end);
+                }
+                aRes.append(aCurrSegment);
+            }
+
+            return aRes;
+        }
+
+        // converters for css::drawing::PointSequence
+
+        B2DPolyPolygon UnoPointSequenceSequenceToB2DPolyPolygon(
+            const css::drawing::PointSequenceSequence& rPointSequenceSequenceSource)
+        {
+            B2DPolyPolygon aRetval;
+            const css::drawing::PointSequence* pPointSequence = rPointSequenceSequenceSource.getConstArray();
+            const css::drawing::PointSequence* pPointSeqEnd = pPointSequence + rPointSequenceSequenceSource.getLength();
+
+            for(;pPointSequence != pPointSeqEnd; pPointSequence++)
+            {
+                const B2DPolygon aNewPolygon = UnoPointSequenceToB2DPolygon(*pPointSequence);
+                aRetval.append(aNewPolygon);
+            }
+
+            return aRetval;
+        }
+
+        void B2DPolyPolygonToUnoPointSequenceSequence(
+            const B2DPolyPolygon& rPolyPolygon,
+            css::drawing::PointSequenceSequence& rPointSequenceSequenceRetval)
+        {
+            const sal_uInt32 nCount(rPolyPolygon.count());
+
+            if(nCount)
+            {
+                rPointSequenceSequenceRetval.realloc(nCount);
+                css::drawing::PointSequence* pPointSequence = rPointSequenceSequenceRetval.getArray();
+
+                for(auto const& rPolygon : rPolyPolygon)
+                {
+                    B2DPolygonToUnoPointSequence(rPolygon, *pPointSequence);
+                    pPointSequence++;
+                }
+            }
+            else
+            {
+                rPointSequenceSequenceRetval.realloc(0);
+            }
+        }
+
+        // converters for css::drawing::PolyPolygonBezierCoords (curved polygons)
+
+        B2DPolyPolygon UnoPolyPolygonBezierCoordsToB2DPolyPolygon(
+            const css::drawing::PolyPolygonBezierCoords& rPolyPolygonBezierCoordsSource)
+        {
+            B2DPolyPolygon aRetval;
+            const sal_uInt32 nSequenceCount(static_cast<sal_uInt32>(rPolyPolygonBezierCoordsSource.Coordinates.getLength()));
+
+            if(nSequenceCount)
+            {
+                OSL_ENSURE(nSequenceCount == static_cast<sal_uInt32>(rPolyPolygonBezierCoordsSource.Flags.getLength()),
+                    "UnoPolyPolygonBezierCoordsToB2DPolyPolygon: unequal number of Points and Flags (!)");
+                const css::drawing::PointSequence* pPointSequence = rPolyPolygonBezierCoordsSource.Coordinates.getConstArray();
+                const css::drawing::FlagSequence* pFlagSequence = rPolyPolygonBezierCoordsSource.Flags.getConstArray();
+
+                for(sal_uInt32 a(0); a < nSequenceCount; a++)
+                {
+                    const B2DPolygon aNewPolygon(UnoPolygonBezierCoordsToB2DPolygon(
+                        *pPointSequence,
+                        *pFlagSequence));
+
+                    pPointSequence++;
+                    pFlagSequence++;
+                    aRetval.append(aNewPolygon);
+                }
+            }
+
+            return aRetval;
+        }
+
+        void B2DPolyPolygonToUnoPolyPolygonBezierCoords(
+            const B2DPolyPolygon& rPolyPolygon,
+            css::drawing::PolyPolygonBezierCoords& rPolyPolygonBezierCoordsRetval)
+        {
+            const sal_uInt32 nCount(rPolyPolygon.count());
+
+            if(nCount)
+            {
+                // prepare return value memory
+                rPolyPolygonBezierCoordsRetval.Coordinates.realloc(static_cast<sal_Int32>(nCount));
+                rPolyPolygonBezierCoordsRetval.Flags.realloc(static_cast<sal_Int32>(nCount));
+
+                // get pointers to arrays
+                css::drawing::PointSequence* pPointSequence = rPolyPolygonBezierCoordsRetval.Coordinates.getArray();
+                css::drawing::FlagSequence*  pFlagSequence = rPolyPolygonBezierCoordsRetval.Flags.getArray();
+
+                for(auto const& rSource : rPolyPolygon)
+                {
+                    B2DPolygonToUnoPolygonBezierCoords(
+                        rSource,
+                        *pPointSequence,
+                        *pFlagSequence);
+                    pPointSequence++;
+                    pFlagSequence++;
+                }
+            }
+            else
+            {
+                rPolyPolygonBezierCoordsRetval.Coordinates.realloc(0);
+                rPolyPolygonBezierCoordsRetval.Flags.realloc(0);
+            }
+        }
+
+} // end of namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */