/* -*- 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 <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
#include <numeric>
namespace basegfx
{
namespace tools
{
B2DPolyPolygon correctOrientations(const B2DPolyPolygon& rCandidate)
{
B2DPolyPolygon aRetval(rCandidate);
const sal_uInt32 nCount(aRetval.count());
for(sal_uInt32 a(0L); a < nCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
const B2VectorOrientation aOrientation(tools::getOrientation(aCandidate));
sal_uInt32 nDepth(0L);
for(sal_uInt32 b(0L); b < nCount; b++)
{
if(b != a)
{
const B2DPolygon aCompare(rCandidate.getB2DPolygon(b));
if(tools::isInside(aCompare, aCandidate, true))
{
nDepth++;
}
}
}
const bool bShallBeHole(1L == (nDepth & 0x00000001));
const bool bIsHole(ORIENTATION_NEGATIVE == aOrientation);
if(bShallBeHole != bIsHole && ORIENTATION_NEUTRAL != aOrientation)
{
B2DPolygon aFlipped(aCandidate);
aFlipped.flip();
aRetval.setB2DPolygon(a, aFlipped);
}
}
return aRetval;
}
B2DPolyPolygon correctOutmostPolygon(const B2DPolyPolygon& rCandidate)
{
const sal_uInt32 nCount(rCandidate.count());
if(nCount > 1L)
{
for(sal_uInt32 a(0L); a < nCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
sal_uInt32 nDepth(0L);
for(sal_uInt32 b(0L); b < nCount; b++)
{
if(b != a)
{
const B2DPolygon aCompare(rCandidate.getB2DPolygon(b));
if(tools::isInside(aCompare, aCandidate, true))
{
nDepth++;
}
}
}
if(!nDepth)
{
B2DPolyPolygon aRetval(rCandidate);
if(a != 0L)
{
// exchange polygon a and polygon 0L
aRetval.setB2DPolygon(0L, aCandidate);
aRetval.setB2DPolygon(a, rCandidate.getB2DPolygon(0L));
}
// exit
return aRetval;
}
}
}
return rCandidate;
}
B2DPolyPolygon adaptiveSubdivideByDistance(const B2DPolyPolygon& rCandidate, double fDistanceBound)
{
if(rCandidate.areControlPointsUsed())
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
if(aCandidate.areControlPointsUsed())
{
aRetval.append(tools::adaptiveSubdivideByDistance(aCandidate, fDistanceBound));
}
else
{
aRetval.append(aCandidate);
}
}
return aRetval;
}
else
{
return rCandidate;
}
}
B2DPolyPolygon adaptiveSubdivideByAngle(const B2DPolyPolygon& rCandidate, double fAngleBound)
{
if(rCandidate.areControlPointsUsed())
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
if(aCandidate.areControlPointsUsed())
{
aRetval.append(tools::adaptiveSubdivideByAngle(aCandidate, fAngleBound));
}
else
{
aRetval.append(aCandidate);
}
}
return aRetval;
}
else
{
return rCandidate;
}
}
B2DPolyPolygon adaptiveSubdivideByCount(const B2DPolyPolygon& rCandidate, sal_uInt32 nCount)
{
if(rCandidate.areControlPointsUsed())
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
if(aCandidate.areControlPointsUsed())
{
aRetval.append(tools::adaptiveSubdivideByCount(aCandidate, nCount));
}
else
{
aRetval.append(aCandidate);
}
}
return aRetval;
}
else
{
return rCandidate;
}
}
bool isInside(const B2DPolyPolygon& rCandidate, const B2DPoint& rPoint, bool bWithBorder)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
if(1L == nPolygonCount)
{
return isInside(rCandidate.getB2DPolygon(0L), rPoint, bWithBorder);
}
else
{
sal_Int32 nInsideCount(0L);
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aPolygon(rCandidate.getB2DPolygon(a));
const bool bInside(isInside(aPolygon, rPoint, bWithBorder));
if(bInside)
{
nInsideCount++;
}
}
return (nInsideCount % 2L);
}
}
B2DRange getRange(const B2DPolyPolygon& rCandidate)
{
B2DRange aRetval;
const sal_uInt32 nPolygonCount(rCandidate.count());
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
B2DPolygon aCandidate = rCandidate.getB2DPolygon(a);
aRetval.expand(tools::getRange(aCandidate));
}
return aRetval;
}
double getSignedArea(const B2DPolyPolygon& rCandidate)
{
double fRetval(0.0);
const sal_uInt32 nPolygonCount(rCandidate.count());
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
fRetval += tools::getSignedArea(aCandidate);
}
return fRetval;
}
double getArea(const B2DPolyPolygon& rCandidate)
{
return fabs(getSignedArea(rCandidate));
}
void applyLineDashing(const B2DPolyPolygon& rCandidate, const ::std::vector<double>& rDotDashArray, B2DPolyPolygon* pLineTarget, B2DPolyPolygon* pGapTarget, double fFullDashDotLen)
{
if(0.0 == fFullDashDotLen && rDotDashArray.size())
{
// calculate fFullDashDotLen from rDotDashArray
fFullDashDotLen = ::std::accumulate(rDotDashArray.begin(), rDotDashArray.end(), 0.0);
}
if(rCandidate.count() && fFullDashDotLen > 0.0)
{
B2DPolyPolygon aLineTarget, aGapTarget;
for(sal_uInt32 a(0L); a < rCandidate.count(); a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
applyLineDashing(
aCandidate,
rDotDashArray,
pLineTarget ? &aLineTarget : 0,
pGapTarget ? &aGapTarget : 0,
fFullDashDotLen);
if(pLineTarget)
{
pLineTarget->append(aLineTarget);
}
if(pGapTarget)
{
pGapTarget->append(aGapTarget);
}
}
}
}
bool isInEpsilonRange(const B2DPolyPolygon& rCandidate, const B2DPoint& rTestPosition, double fDistance)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
if(isInEpsilonRange(aCandidate, rTestPosition, fDistance))
{
return true;
}
}
return false;
}
B3DPolyPolygon createB3DPolyPolygonFromB2DPolyPolygon(const B2DPolyPolygon& rCandidate, double fZCoordinate)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B3DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
aRetval.append(createB3DPolygonFromB2DPolygon(aCandidate, fZCoordinate));
}
return aRetval;
}
B2DPolyPolygon createB2DPolyPolygonFromB3DPolyPolygon(const B3DPolyPolygon& rCandidate, const B3DHomMatrix& rMat)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
B3DPolygon aCandidate(rCandidate.getB3DPolygon(a));
aRetval.append(createB2DPolygonFromB3DPolygon(aCandidate, 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(0L); 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(DBL_MAX == fRetval || 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)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
aRetval.append(distort(aCandidate, rOriginal, rTopLeft, rTopRight, rBottomLeft, rBottomRight));
}
return aRetval;
}
B2DPolyPolygon expandToCurve(const B2DPolyPolygon& rCandidate)
{
const sal_uInt32 nPolygonCount(rCandidate.count());
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < nPolygonCount; a++)
{
const B2DPolygon aCandidate(rCandidate.getB2DPolygon(a));
aRetval.append(expandToCurve(aCandidate));
}
return aRetval;
}
B2DPolyPolygon growInNormalDirection(const B2DPolyPolygon& rCandidate, double fValue)
{
if(0.0 != fValue)
{
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < rCandidate.count(); a++)
{
aRetval.append(growInNormalDirection(rCandidate.getB2DPolygon(a), fValue));
}
return aRetval;
}
else
{
return rCandidate;
}
}
void correctGrowShrinkPolygonPair(SAL_UNUSED_PARAMETER B2DPolyPolygon& /*rOriginal*/, SAL_UNUSED_PARAMETER B2DPolyPolygon& /*rGrown*/)
{
//TODO!
}
B2DPolyPolygon reSegmentPolyPolygon(const B2DPolyPolygon& rCandidate, sal_uInt32 nSegments)
{
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < rCandidate.count(); a++)
{
aRetval.append(reSegmentPolygon(rCandidate.getB2DPolygon(a), 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(0L); 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(sal_uInt32 a(0L); a < rCandidate.count(); a++)
{
aRetval.append(simplifyCurveSegments(rCandidate.getB2DPolygon(a)));
}
return aRetval;
}
else
{
return rCandidate;
}
}
B2DPolyPolygon snapPointsOfHorizontalOrVerticalEdges(const B2DPolyPolygon& rCandidate)
{
B2DPolyPolygon aRetval;
for(sal_uInt32 a(0L); a < rCandidate.count(); a++)
{
aRetval.append(snapPointsOfHorizontalOrVerticalEdges(rCandidate.getB2DPolygon(a)));
}
return aRetval;
}
bool containsOnlyHorizontalAndVerticalEdges(const B2DPolyPolygon& rCandidate)
{
if(rCandidate.areControlPointsUsed())
{
return false;
}
for(sal_uInt32 a(0); a < rCandidate.count(); a++)
{
if(!containsOnlyHorizontalAndVerticalEdges(rCandidate.getB2DPolygon(a)))
{
return false;
}
}
return true;
}
B2DPolyPolygon createSevenSegmentPolyPolygon(sal_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=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( 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 com::sun::star::drawing::PointSequence
B2DPolyPolygon UnoPointSequenceSequenceToB2DPolyPolygon(
const com::sun::star::drawing::PointSequenceSequence& rPointSequenceSequenceSource,
bool bCheckClosed)
{
B2DPolyPolygon aRetval;
const com::sun::star::drawing::PointSequence* pPointSequence = rPointSequenceSequenceSource.getConstArray();
const com::sun::star::drawing::PointSequence* pPointSeqEnd = pPointSequence + rPointSequenceSequenceSource.getLength();
for(;pPointSequence != pPointSeqEnd; pPointSequence++)
{
const B2DPolygon aNewPolygon = UnoPointSequenceToB2DPolygon(*pPointSequence, bCheckClosed);
aRetval.append(aNewPolygon);
}
return aRetval;
}
void B2DPolyPolygonToUnoPointSequenceSequence(
const B2DPolyPolygon& rPolyPolygon,
com::sun::star::drawing::PointSequenceSequence& rPointSequenceSequenceRetval)
{
const sal_uInt32 nCount(rPolyPolygon.count());
if(nCount)
{
rPointSequenceSequenceRetval.realloc(nCount);
com::sun::star::drawing::PointSequence* pPointSequence = rPointSequenceSequenceRetval.getArray();
for(sal_uInt32 a(0); a < nCount; a++)
{
const B2DPolygon aPolygon(rPolyPolygon.getB2DPolygon(a));
B2DPolygonToUnoPointSequence(aPolygon, *pPointSequence);
pPointSequence++;
}
}
else
{
rPointSequenceSequenceRetval.realloc(0);
}
}
// converters for com::sun::star::drawing::PolyPolygonBezierCoords (curved polygons)
B2DPolyPolygon UnoPolyPolygonBezierCoordsToB2DPolyPolygon(
const com::sun::star::drawing::PolyPolygonBezierCoords& rPolyPolygonBezierCoordsSource,
bool bCheckClosed)
{
B2DPolyPolygon aRetval;
const sal_uInt32 nSequenceCount((sal_uInt32)rPolyPolygonBezierCoordsSource.Coordinates.getLength());
if(nSequenceCount)
{
OSL_ENSURE(nSequenceCount == (sal_uInt32)rPolyPolygonBezierCoordsSource.Flags.getLength(),
"UnoPolyPolygonBezierCoordsToB2DPolyPolygon: unequal number of Points and Flags (!)");
const com::sun::star::drawing::PointSequence* pPointSequence = rPolyPolygonBezierCoordsSource.Coordinates.getConstArray();
const com::sun::star::drawing::FlagSequence* pFlagSequence = rPolyPolygonBezierCoordsSource.Flags.getConstArray();
for(sal_uInt32 a(0); a < nSequenceCount; a++)
{
const B2DPolygon aNewPolygon(UnoPolygonBezierCoordsToB2DPolygon(
*pPointSequence,
*pFlagSequence,
bCheckClosed));
pPointSequence++;
pFlagSequence++;
aRetval.append(aNewPolygon);
}
}
return aRetval;
}
void B2DPolyPolygonToUnoPolyPolygonBezierCoords(
const B2DPolyPolygon& rPolyPolygon,
com::sun::star::drawing::PolyPolygonBezierCoords& rPolyPolygonBezierCoordsRetval)
{
const sal_uInt32 nCount(rPolyPolygon.count());
if(nCount)
{
// prepare return value memory
rPolyPolygonBezierCoordsRetval.Coordinates.realloc((sal_Int32)nCount);
rPolyPolygonBezierCoordsRetval.Flags.realloc((sal_Int32)nCount);
// get pointers to arrays
com::sun::star::drawing::PointSequence* pPointSequence = rPolyPolygonBezierCoordsRetval.Coordinates.getArray();
com::sun::star::drawing::FlagSequence* pFlagSequence = rPolyPolygonBezierCoordsRetval.Flags.getArray();
for(sal_uInt32 a(0); a < nCount; a++)
{
const B2DPolygon aSource(rPolyPolygon.getB2DPolygon(a));
B2DPolygonToUnoPolygonBezierCoords(
aSource,
*pPointSequence,
*pFlagSequence);
pPointSequence++;
pFlagSequence++;
}
}
else
{
rPolyPolygonBezierCoordsRetval.Coordinates.realloc(0);
rPolyPolygonBezierCoordsRetval.Flags.realloc(0);
}
}
} // end of namespace tools
} // end of namespace basegfx
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