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diff --git a/basegfx/source/polygon/b2dpolypolygontools.cxx b/basegfx/source/polygon/b2dpolypolygontools.cxx
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+/* -*- 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=SAL_N_ELEMENTS(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: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 11:02:35 +0000