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Diffstat (limited to 'basegfx/source/polygon/b3dpolygon.cxx')
| -rw-r--r-- | basegfx/source/polygon/b3dpolygon.cxx | 1619 |
1 files changed, 1619 insertions, 0 deletions
diff --git a/basegfx/source/polygon/b3dpolygon.cxx b/basegfx/source/polygon/b3dpolygon.cxx new file mode 100644 index 000000000..9be2f882c --- /dev/null +++ b/basegfx/source/polygon/b3dpolygon.cxx @@ -0,0 +1,1619 @@ +/* -*- 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 <osl/diagnose.h> +#include <basegfx/polygon/b3dpolygon.hxx> +#include <basegfx/point/b3dpoint.hxx> +#include <basegfx/matrix/b3dhommatrix.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/color/bcolor.hxx> +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <rtl/math.hxx> +#include <vector> +#include <algorithm> + +namespace { + +class CoordinateData3D +{ + basegfx::B3DPoint maPoint; + +public: + CoordinateData3D() + : maPoint() + { + } + + explicit CoordinateData3D(const basegfx::B3DPoint& rData) + : maPoint(rData) + { + } + + const basegfx::B3DPoint& getCoordinate() const + { + return maPoint; + } + + void setCoordinate(const basegfx::B3DPoint& rValue) + { + if(rValue != maPoint) + maPoint = rValue; + } + + bool operator==(const CoordinateData3D& rData) const + { + return (maPoint == rData.getCoordinate()); + } + + void transform(const basegfx::B3DHomMatrix& rMatrix) + { + maPoint *= rMatrix; + } +}; + +class CoordinateDataArray3D +{ + typedef std::vector< CoordinateData3D > CoordinateData3DVector; + + CoordinateData3DVector maVector; + +public: + explicit CoordinateDataArray3D(sal_uInt32 nCount) + : maVector(nCount) + { + } + + CoordinateDataArray3D(const CoordinateDataArray3D& rOriginal, sal_uInt32 nIndex, sal_uInt32 nCount) + : maVector(rOriginal.maVector.begin() + nIndex, rOriginal.maVector.begin() + (nIndex + nCount)) + { + } + + ::basegfx::B3DVector getNormal() const + { + ::basegfx::B3DVector aRetval; + const sal_uInt32 nPointCount(maVector.size()); + + if(nPointCount > 2) + { + sal_uInt32 nISmallest(0); + sal_uInt32 a(0); + const basegfx::B3DPoint* pSmallest(&maVector[0].getCoordinate()); + const basegfx::B3DPoint* pNext(nullptr); + const basegfx::B3DPoint* pPrev(nullptr); + + // To guarantee a correctly oriented point, choose an outmost one + // which then cannot be concave + for(a = 1; a < nPointCount; a++) + { + const basegfx::B3DPoint& rCandidate = maVector[a].getCoordinate(); + + if((rCandidate.getX() < pSmallest->getX()) + || (rCandidate.getX() == pSmallest->getX() && rCandidate.getY() < pSmallest->getY()) + || (rCandidate.getX() == pSmallest->getX() && rCandidate.getY() == pSmallest->getY() && rCandidate.getZ() < pSmallest->getZ())) + { + nISmallest = a; + pSmallest = &rCandidate; + } + } + + // look for a next point different from minimal one + for(a = (nISmallest + 1) % nPointCount; a != nISmallest; a = (a + 1) % nPointCount) + { + const basegfx::B3DPoint& rCandidate = maVector[a].getCoordinate(); + + if(!rCandidate.equal(*pSmallest)) + { + pNext = &rCandidate; + break; + } + } + + // look for a previous point different from minimal one + for(a = (nISmallest + nPointCount - 1) % nPointCount; a != nISmallest; a = (a + nPointCount - 1) % nPointCount) + { + const basegfx::B3DPoint& rCandidate = maVector[a].getCoordinate(); + + if(!rCandidate.equal(*pSmallest)) + { + pPrev = &rCandidate; + break; + } + } + + // we always have a minimal point. If we also have a different next and previous, + // we can calculate the normal + if(pNext && pPrev) + { + const basegfx::B3DVector aPrev(*pPrev - *pSmallest); + const basegfx::B3DVector aNext(*pNext - *pSmallest); + + aRetval = cross(aPrev, aNext); + aRetval.normalize(); + } + } + + return aRetval; + } + + sal_uInt32 count() const + { + return maVector.size(); + } + + bool operator==(const CoordinateDataArray3D& rCandidate) const + { + return (maVector == rCandidate.maVector); + } + + const basegfx::B3DPoint& getCoordinate(sal_uInt32 nIndex) const + { + return maVector[nIndex].getCoordinate(); + } + + void setCoordinate(sal_uInt32 nIndex, const basegfx::B3DPoint& rValue) + { + maVector[nIndex].setCoordinate(rValue); + } + + void insert(sal_uInt32 nIndex, const CoordinateData3D& rValue, sal_uInt32 nCount) + { + if(nCount) + { + // add nCount copies of rValue + CoordinateData3DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + maVector.insert(aIndex, nCount, rValue); + } + } + + void insert(sal_uInt32 nIndex, const CoordinateDataArray3D& rSource) + { + const sal_uInt32 nCount(rSource.maVector.size()); + + if(nCount) + { + // insert data + CoordinateData3DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + CoordinateData3DVector::const_iterator aStart(rSource.maVector.begin()); + CoordinateData3DVector::const_iterator aEnd(rSource.maVector.end()); + maVector.insert(aIndex, aStart, aEnd); + } + } + + void remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(nCount) + { + // remove point data + CoordinateData3DVector::iterator aStart(maVector.begin()); + aStart += nIndex; + const CoordinateData3DVector::iterator aEnd(aStart + nCount); + maVector.erase(aStart, aEnd); + } + } + + void flip() + { + if(maVector.size() <= 1) + return; + + const sal_uInt32 nHalfSize(maVector.size() >> 1); + CoordinateData3DVector::iterator aStart(maVector.begin()); + CoordinateData3DVector::iterator aEnd(maVector.end() - 1); + + for(sal_uInt32 a(0); a < nHalfSize; a++) + { + std::swap(*aStart, *aEnd); + ++aStart; + --aEnd; + } + } + + void transform(const ::basegfx::B3DHomMatrix& rMatrix) + { + for (auto & elem : maVector) + { + elem.transform(rMatrix); + } + } +}; + +class BColorArray +{ + typedef std::vector< ::basegfx::BColor > BColorDataVector; + + BColorDataVector maVector; + sal_uInt32 mnUsedEntries; + +public: + explicit BColorArray(sal_uInt32 nCount) + : maVector(nCount), + mnUsedEntries(0) + { + } + + BColorArray(const BColorArray& rOriginal, sal_uInt32 nIndex, sal_uInt32 nCount) + : maVector(), + mnUsedEntries(0) + { + BColorDataVector::const_iterator aStart(rOriginal.maVector.begin()); + aStart += nIndex; + BColorDataVector::const_iterator aEnd(aStart); + assert(nCount <= rOriginal.maVector.size()); + aEnd += nCount; + maVector.reserve(nCount); + + for(; aStart != aEnd; ++aStart) + { + if(!aStart->equalZero()) + mnUsedEntries++; + + maVector.push_back(*aStart); + } + } + + bool operator==(const BColorArray& rCandidate) const + { + return (maVector == rCandidate.maVector); + } + + bool isUsed() const + { + return (mnUsedEntries != 0); + } + + const ::basegfx::BColor& getBColor(sal_uInt32 nIndex) const + { + return maVector[nIndex]; + } + + void setBColor(sal_uInt32 nIndex, const ::basegfx::BColor& rValue) + { + bool bWasUsed(mnUsedEntries && !maVector[nIndex].equalZero()); + bool bIsUsed(!rValue.equalZero()); + + if(bWasUsed) + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + } + else + { + maVector[nIndex] = ::basegfx::BColor::getEmptyBColor(); + mnUsedEntries--; + } + } + else + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + mnUsedEntries++; + } + } + } + + void insert(sal_uInt32 nIndex, const ::basegfx::BColor& rValue, sal_uInt32 nCount) + { + if(nCount) + { + // add nCount copies of rValue + BColorDataVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + maVector.insert(aIndex, nCount, rValue); + + if(!rValue.equalZero()) + mnUsedEntries += nCount; + } + } + + void insert(sal_uInt32 nIndex, const BColorArray& rSource) + { + const sal_uInt32 nCount(rSource.maVector.size()); + + if(nCount) + { + // insert data + BColorDataVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + BColorDataVector::const_iterator aStart(rSource.maVector.begin()); + BColorDataVector::const_iterator aEnd(rSource.maVector.end()); + maVector.insert(aIndex, aStart, aEnd); + + mnUsedEntries += std::count_if(aStart, aEnd, + [](BColorDataVector::const_reference rData) { return !rData.equalZero(); }); + } + } + + void remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(nCount) + { + const BColorDataVector::iterator aDeleteStart(maVector.begin() + nIndex); + const BColorDataVector::iterator aDeleteEnd(aDeleteStart + nCount); + + auto nDeleteUsed = std::count_if(aDeleteStart, aDeleteEnd, + [](BColorDataVector::const_reference rData) { return !rData.equalZero(); }); + mnUsedEntries -= std::min(mnUsedEntries, static_cast<sal_uInt32>(nDeleteUsed)); + + // remove point data + maVector.erase(aDeleteStart, aDeleteEnd); + } + } + + void flip() + { + if(maVector.size() <= 1) + return; + + const sal_uInt32 nHalfSize(maVector.size() >> 1); + BColorDataVector::iterator aStart(maVector.begin()); + BColorDataVector::iterator aEnd(maVector.end() - 1); + + for(sal_uInt32 a(0); a < nHalfSize; a++) + { + std::swap(*aStart, *aEnd); + ++aStart; + --aEnd; + } + } +}; + +class NormalsArray3D +{ + typedef std::vector< ::basegfx::B3DVector > NormalsData3DVector; + + NormalsData3DVector maVector; + sal_uInt32 mnUsedEntries; + +public: + explicit NormalsArray3D(sal_uInt32 nCount) + : maVector(nCount), + mnUsedEntries(0) + { + } + + NormalsArray3D(const NormalsArray3D& rOriginal, sal_uInt32 nIndex, sal_uInt32 nCount) + : maVector(), + mnUsedEntries(0) + { + NormalsData3DVector::const_iterator aStart(rOriginal.maVector.begin()); + aStart += nIndex; + NormalsData3DVector::const_iterator aEnd(aStart); + aEnd += nCount; + maVector.reserve(nCount); + + for(; aStart != aEnd; ++aStart) + { + if(!aStart->equalZero()) + mnUsedEntries++; + + maVector.push_back(*aStart); + } + } + + bool operator==(const NormalsArray3D& rCandidate) const + { + return (maVector == rCandidate.maVector); + } + + bool isUsed() const + { + return (mnUsedEntries != 0); + } + + const ::basegfx::B3DVector& getNormal(sal_uInt32 nIndex) const + { + return maVector[nIndex]; + } + + void setNormal(sal_uInt32 nIndex, const ::basegfx::B3DVector& rValue) + { + bool bWasUsed(mnUsedEntries && !maVector[nIndex].equalZero()); + bool bIsUsed(!rValue.equalZero()); + + if(bWasUsed) + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + } + else + { + maVector[nIndex] = ::basegfx::B3DVector::getEmptyVector(); + mnUsedEntries--; + } + } + else + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + mnUsedEntries++; + } + } + } + + void insert(sal_uInt32 nIndex, const ::basegfx::B3DVector& rValue, sal_uInt32 nCount) + { + if(nCount) + { + // add nCount copies of rValue + NormalsData3DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + maVector.insert(aIndex, nCount, rValue); + + if(!rValue.equalZero()) + mnUsedEntries += nCount; + } + } + + void insert(sal_uInt32 nIndex, const NormalsArray3D& rSource) + { + const sal_uInt32 nCount(rSource.maVector.size()); + + if(nCount) + { + // insert data + NormalsData3DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + NormalsData3DVector::const_iterator aStart(rSource.maVector.begin()); + NormalsData3DVector::const_iterator aEnd(rSource.maVector.end()); + maVector.insert(aIndex, aStart, aEnd); + + mnUsedEntries += std::count_if(aStart, aEnd, + [](NormalsData3DVector::const_reference rData) { return !rData.equalZero(); }); + } + } + + void remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(nCount) + { + const NormalsData3DVector::iterator aDeleteStart(maVector.begin() + nIndex); + const NormalsData3DVector::iterator aDeleteEnd(aDeleteStart + nCount); + + auto nDeleteUsed = std::count_if(aDeleteStart, aDeleteEnd, + [](NormalsData3DVector::const_reference rData) { return !rData.equalZero(); }); + mnUsedEntries -= std::min(mnUsedEntries, static_cast<sal_uInt32>(nDeleteUsed)); + + // remove point data + maVector.erase(aDeleteStart, aDeleteEnd); + } + } + + void flip() + { + if(maVector.size() <= 1) + return; + + const sal_uInt32 nHalfSize(maVector.size() >> 1); + NormalsData3DVector::iterator aStart(maVector.begin()); + NormalsData3DVector::iterator aEnd(maVector.end() - 1); + + for(sal_uInt32 a(0); a < nHalfSize; a++) + { + std::swap(*aStart, *aEnd); + ++aStart; + --aEnd; + } + } + + void transform(const basegfx::B3DHomMatrix& rMatrix) + { + for (auto & elem : maVector) + { + elem *= rMatrix; + } + } +}; + +class TextureCoordinate2D +{ + typedef std::vector< ::basegfx::B2DPoint > TextureData2DVector; + + TextureData2DVector maVector; + sal_uInt32 mnUsedEntries; + +public: + explicit TextureCoordinate2D(sal_uInt32 nCount) + : maVector(nCount), + mnUsedEntries(0) + { + } + + TextureCoordinate2D(const TextureCoordinate2D& rOriginal, sal_uInt32 nIndex, sal_uInt32 nCount) + : maVector(), + mnUsedEntries(0) + { + TextureData2DVector::const_iterator aStart(rOriginal.maVector.begin()); + aStart += nIndex; + TextureData2DVector::const_iterator aEnd(aStart); + aEnd += nCount; + maVector.reserve(nCount); + + for(; aStart != aEnd; ++aStart) + { + if(!aStart->equalZero()) + mnUsedEntries++; + + maVector.push_back(*aStart); + } + } + + bool operator==(const TextureCoordinate2D& rCandidate) const + { + return (maVector == rCandidate.maVector); + } + + bool isUsed() const + { + return (mnUsedEntries != 0); + } + + const ::basegfx::B2DPoint& getTextureCoordinate(sal_uInt32 nIndex) const + { + return maVector[nIndex]; + } + + void setTextureCoordinate(sal_uInt32 nIndex, const ::basegfx::B2DPoint& rValue) + { + bool bWasUsed(mnUsedEntries && !maVector[nIndex].equalZero()); + bool bIsUsed(!rValue.equalZero()); + + if(bWasUsed) + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + } + else + { + maVector[nIndex] = ::basegfx::B2DPoint::getEmptyPoint(); + mnUsedEntries--; + } + } + else + { + if(bIsUsed) + { + maVector[nIndex] = rValue; + mnUsedEntries++; + } + } + } + + void insert(sal_uInt32 nIndex, const ::basegfx::B2DPoint& rValue, sal_uInt32 nCount) + { + if(nCount) + { + // add nCount copies of rValue + TextureData2DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + maVector.insert(aIndex, nCount, rValue); + + if(!rValue.equalZero()) + mnUsedEntries += nCount; + } + } + + void insert(sal_uInt32 nIndex, const TextureCoordinate2D& rSource) + { + const sal_uInt32 nCount(rSource.maVector.size()); + + if(nCount) + { + // insert data + TextureData2DVector::iterator aIndex(maVector.begin()); + aIndex += nIndex; + TextureData2DVector::const_iterator aStart(rSource.maVector.begin()); + TextureData2DVector::const_iterator aEnd(rSource.maVector.end()); + maVector.insert(aIndex, aStart, aEnd); + + mnUsedEntries += std::count_if(aStart, aEnd, + [](TextureData2DVector::const_reference rData) { return !rData.equalZero(); }); + } + } + + void remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(nCount) + { + const TextureData2DVector::iterator aDeleteStart(maVector.begin() + nIndex); + const TextureData2DVector::iterator aDeleteEnd(aDeleteStart + nCount); + + auto nDeleteUsed = std::count_if(aDeleteStart, aDeleteEnd, + [](TextureData2DVector::const_reference rData) { return !rData.equalZero(); }); + mnUsedEntries -= std::min(mnUsedEntries, static_cast<sal_uInt32>(nDeleteUsed)); + + // remove point data + maVector.erase(aDeleteStart, aDeleteEnd); + } + } + + void flip() + { + if(maVector.size() <= 1) + return; + + const sal_uInt32 nHalfSize(maVector.size() >> 1); + TextureData2DVector::iterator aStart(maVector.begin()); + TextureData2DVector::iterator aEnd(maVector.end() - 1); + + for(sal_uInt32 a(0); a < nHalfSize; a++) + { + std::swap(*aStart, *aEnd); + ++aStart; + --aEnd; + } + } + + void transform(const ::basegfx::B2DHomMatrix& rMatrix) + { + for (auto & elem : maVector) + { + elem *= rMatrix; + } + } +}; + +} + +class ImplB3DPolygon +{ + // The point vector. This vector exists always and defines the + // count of members. + CoordinateDataArray3D maPoints; + + // The BColor vector. This vectors are created on demand + // and may be zero. + std::unique_ptr<BColorArray> mpBColors; + + // The Normals vector. This vectors are created on demand + // and may be zero. + std::unique_ptr<NormalsArray3D> mpNormals; + + // The TextureCoordinates vector. This vectors are created on demand + // and may be zero. + std::unique_ptr<TextureCoordinate2D> mpTextureCoordinates; + + // The calculated plane normal. mbPlaneNormalValid says if it's valid. + ::basegfx::B3DVector maPlaneNormal; + + // flag which decides if this polygon is opened or closed + bool mbIsClosed : 1; + + // flag which says if maPlaneNormal is up-to-date + bool mbPlaneNormalValid : 1; + +protected: + void invalidatePlaneNormal() + { + if(mbPlaneNormalValid) + { + mbPlaneNormalValid = false; + } + } + +public: + // This constructor is only used from the static identity polygon, thus + // the RefCount is set to 1 to never 'delete' this static incarnation. + ImplB3DPolygon() + : maPoints(0), + maPlaneNormal(::basegfx::B3DVector::getEmptyVector()), + mbIsClosed(false), + mbPlaneNormalValid(true) + { + // complete initialization with defaults + } + + ImplB3DPolygon(const ImplB3DPolygon& rToBeCopied) + : maPoints(rToBeCopied.maPoints), + maPlaneNormal(rToBeCopied.maPlaneNormal), + mbIsClosed(rToBeCopied.mbIsClosed), + mbPlaneNormalValid(rToBeCopied.mbPlaneNormalValid) + { + // complete initialization using copy + if(rToBeCopied.mpBColors && rToBeCopied.mpBColors->isUsed()) + { + mpBColors.reset( new BColorArray(*rToBeCopied.mpBColors) ); + } + + if(rToBeCopied.mpNormals && rToBeCopied.mpNormals->isUsed()) + { + mpNormals.reset( new NormalsArray3D(*rToBeCopied.mpNormals) ); + } + + if(rToBeCopied.mpTextureCoordinates && rToBeCopied.mpTextureCoordinates->isUsed()) + { + mpTextureCoordinates.reset( new TextureCoordinate2D(*rToBeCopied.mpTextureCoordinates) ); + } + } + + ImplB3DPolygon(const ImplB3DPolygon& rToBeCopied, sal_uInt32 nIndex, sal_uInt32 nCount) + : maPoints(rToBeCopied.maPoints, nIndex, nCount), + maPlaneNormal(::basegfx::B3DVector::getEmptyVector()), + mbIsClosed(rToBeCopied.mbIsClosed), + mbPlaneNormalValid(false) + { + // complete initialization using partly copy + if(rToBeCopied.mpBColors && rToBeCopied.mpBColors->isUsed()) + { + mpBColors.reset( new BColorArray(*rToBeCopied.mpBColors, nIndex, nCount) ); + + if(!mpBColors->isUsed()) + { + mpBColors.reset(); + } + } + + if(rToBeCopied.mpNormals && rToBeCopied.mpNormals->isUsed()) + { + mpNormals.reset( new NormalsArray3D(*rToBeCopied.mpNormals, nIndex, nCount) ); + + if(!mpNormals->isUsed()) + { + mpNormals.reset(); + } + } + + if(rToBeCopied.mpTextureCoordinates && rToBeCopied.mpTextureCoordinates->isUsed()) + { + mpTextureCoordinates.reset( new TextureCoordinate2D(*rToBeCopied.mpTextureCoordinates, nIndex, nCount) ); + + if(!mpTextureCoordinates->isUsed()) + { + mpTextureCoordinates.reset(); + } + } + } + + sal_uInt32 count() const + { + return maPoints.count(); + } + + bool isClosed() const + { + return mbIsClosed; + } + + void setClosed(bool bNew) + { + if(bNew != mbIsClosed) + { + mbIsClosed = bNew; + } + } + + bool impBColorsAreEqual(const ImplB3DPolygon& rCandidate) const + { + bool bBColorsAreEqual(true); + + if(mpBColors) + { + if(rCandidate.mpBColors) + { + bBColorsAreEqual = (*mpBColors == *rCandidate.mpBColors); + } + else + { + // candidate has no BColors, so it's assumed all unused. + bBColorsAreEqual = !mpBColors->isUsed(); + } + } + else + { + if(rCandidate.mpBColors) + { + // we have no TextureCoordinates, so it's assumed all unused. + bBColorsAreEqual = !rCandidate.mpBColors->isUsed(); + } + } + + return bBColorsAreEqual; + } + + bool impNormalsAreEqual(const ImplB3DPolygon& rCandidate) const + { + bool bNormalsAreEqual(true); + + if(mpNormals) + { + if(rCandidate.mpNormals) + { + bNormalsAreEqual = (*mpNormals == *rCandidate.mpNormals); + } + else + { + // candidate has no normals, so it's assumed all unused. + bNormalsAreEqual = !mpNormals->isUsed(); + } + } + else + { + if(rCandidate.mpNormals) + { + // we have no normals, so it's assumed all unused. + bNormalsAreEqual = !rCandidate.mpNormals->isUsed(); + } + } + + return bNormalsAreEqual; + } + + bool impTextureCoordinatesAreEqual(const ImplB3DPolygon& rCandidate) const + { + bool bTextureCoordinatesAreEqual(true); + + if(mpTextureCoordinates) + { + if(rCandidate.mpTextureCoordinates) + { + bTextureCoordinatesAreEqual = (*mpTextureCoordinates == *rCandidate.mpTextureCoordinates); + } + else + { + // candidate has no TextureCoordinates, so it's assumed all unused. + bTextureCoordinatesAreEqual = !mpTextureCoordinates->isUsed(); + } + } + else + { + if(rCandidate.mpTextureCoordinates) + { + // we have no TextureCoordinates, so it's assumed all unused. + bTextureCoordinatesAreEqual = !rCandidate.mpTextureCoordinates->isUsed(); + } + } + + return bTextureCoordinatesAreEqual; + } + + bool operator==(const ImplB3DPolygon& rCandidate) const + { + if(mbIsClosed == rCandidate.mbIsClosed) + { + if(maPoints == rCandidate.maPoints) + { + if(impBColorsAreEqual(rCandidate)) + { + if(impNormalsAreEqual(rCandidate)) + { + if(impTextureCoordinatesAreEqual(rCandidate)) + { + return true; + } + } + } + } + } + + return false; + } + + const ::basegfx::B3DPoint& getPoint(sal_uInt32 nIndex) const + { + return maPoints.getCoordinate(nIndex); + } + + void setPoint(sal_uInt32 nIndex, const ::basegfx::B3DPoint& rValue) + { + maPoints.setCoordinate(nIndex, rValue); + invalidatePlaneNormal(); + } + + void insert(sal_uInt32 nIndex, const ::basegfx::B3DPoint& rPoint, sal_uInt32 nCount) + { + if(!nCount) + return; + + CoordinateData3D aCoordinate(rPoint); + maPoints.insert(nIndex, aCoordinate, nCount); + invalidatePlaneNormal(); + + if(mpBColors) + { + mpBColors->insert(nIndex, ::basegfx::BColor::getEmptyBColor(), nCount); + } + + if(mpNormals) + { + mpNormals->insert(nIndex, ::basegfx::B3DVector::getEmptyVector(), nCount); + } + + if(mpTextureCoordinates) + { + mpTextureCoordinates->insert(nIndex, ::basegfx::B2DPoint::getEmptyPoint(), nCount); + } + } + + const ::basegfx::BColor& getBColor(sal_uInt32 nIndex) const + { + if(mpBColors) + { + return mpBColors->getBColor(nIndex); + } + else + { + return ::basegfx::BColor::getEmptyBColor(); + } + } + + void setBColor(sal_uInt32 nIndex, const ::basegfx::BColor& rValue) + { + if(!mpBColors) + { + if(!rValue.equalZero()) + { + mpBColors.reset( new BColorArray(maPoints.count()) ); + mpBColors->setBColor(nIndex, rValue); + } + } + else + { + mpBColors->setBColor(nIndex, rValue); + + if(!mpBColors->isUsed()) + { + mpBColors.reset(); + } + } + } + + bool areBColorsUsed() const + { + return (mpBColors && mpBColors->isUsed()); + } + + void clearBColors() + { + mpBColors.reset(); + } + + const ::basegfx::B3DVector& getNormal() const + { + if(!mbPlaneNormalValid) + { + const_cast< ImplB3DPolygon* >(this)->maPlaneNormal = maPoints.getNormal(); + const_cast< ImplB3DPolygon* >(this)->mbPlaneNormalValid = true; + } + + return maPlaneNormal; + } + + const ::basegfx::B3DVector& getNormal(sal_uInt32 nIndex) const + { + if(mpNormals) + { + return mpNormals->getNormal(nIndex); + } + else + { + return ::basegfx::B3DVector::getEmptyVector(); + } + } + + void setNormal(sal_uInt32 nIndex, const ::basegfx::B3DVector& rValue) + { + if(!mpNormals) + { + if(!rValue.equalZero()) + { + mpNormals.reset( new NormalsArray3D(maPoints.count()) ); + mpNormals->setNormal(nIndex, rValue); + } + } + else + { + mpNormals->setNormal(nIndex, rValue); + + if(!mpNormals->isUsed()) + { + mpNormals.reset(); + } + } + } + + void transformNormals(const ::basegfx::B3DHomMatrix& rMatrix) + { + if(mpNormals) + { + mpNormals->transform(rMatrix); + } + } + + bool areNormalsUsed() const + { + return (mpNormals && mpNormals->isUsed()); + } + + void clearNormals() + { + mpNormals.reset(); + } + + const ::basegfx::B2DPoint& getTextureCoordinate(sal_uInt32 nIndex) const + { + if(mpTextureCoordinates) + { + return mpTextureCoordinates->getTextureCoordinate(nIndex); + } + else + { + return ::basegfx::B2DPoint::getEmptyPoint(); + } + } + + void setTextureCoordinate(sal_uInt32 nIndex, const ::basegfx::B2DPoint& rValue) + { + if(!mpTextureCoordinates) + { + if(!rValue.equalZero()) + { + mpTextureCoordinates.reset( new TextureCoordinate2D(maPoints.count()) ); + mpTextureCoordinates->setTextureCoordinate(nIndex, rValue); + } + } + else + { + mpTextureCoordinates->setTextureCoordinate(nIndex, rValue); + + if(!mpTextureCoordinates->isUsed()) + { + mpTextureCoordinates.reset(); + } + } + } + + bool areTextureCoordinatesUsed() const + { + return (mpTextureCoordinates && mpTextureCoordinates->isUsed()); + } + + void clearTextureCoordinates() + { + mpTextureCoordinates.reset(); + } + + void transformTextureCoordinates(const ::basegfx::B2DHomMatrix& rMatrix) + { + if(mpTextureCoordinates) + { + mpTextureCoordinates->transform(rMatrix); + } + } + + void insert(sal_uInt32 nIndex, const ImplB3DPolygon& rSource) + { + const sal_uInt32 nCount(rSource.maPoints.count()); + + if(!nCount) + return; + + maPoints.insert(nIndex, rSource.maPoints); + invalidatePlaneNormal(); + + if(rSource.mpBColors && rSource.mpBColors->isUsed()) + { + if(!mpBColors) + { + mpBColors.reset( new BColorArray(maPoints.count()) ); + } + + mpBColors->insert(nIndex, *rSource.mpBColors); + } + else + { + if(mpBColors) + { + mpBColors->insert(nIndex, ::basegfx::BColor::getEmptyBColor(), nCount); + } + } + + if(rSource.mpNormals && rSource.mpNormals->isUsed()) + { + if(!mpNormals) + { + mpNormals.reset( new NormalsArray3D(maPoints.count()) ); + } + + mpNormals->insert(nIndex, *rSource.mpNormals); + } + else + { + if(mpNormals) + { + mpNormals->insert(nIndex, ::basegfx::B3DVector::getEmptyVector(), nCount); + } + } + + if(rSource.mpTextureCoordinates && rSource.mpTextureCoordinates->isUsed()) + { + if(!mpTextureCoordinates) + { + mpTextureCoordinates.reset( new TextureCoordinate2D(maPoints.count()) ); + } + + mpTextureCoordinates->insert(nIndex, *rSource.mpTextureCoordinates); + } + else + { + if(mpTextureCoordinates) + { + mpTextureCoordinates->insert(nIndex, ::basegfx::B2DPoint::getEmptyPoint(), nCount); + } + } + } + + void remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(!nCount) + return; + + maPoints.remove(nIndex, nCount); + invalidatePlaneNormal(); + + if(mpBColors) + { + mpBColors->remove(nIndex, nCount); + + if(!mpBColors->isUsed()) + { + mpBColors.reset(); + } + } + + if(mpNormals) + { + mpNormals->remove(nIndex, nCount); + + if(!mpNormals->isUsed()) + { + mpNormals.reset(); + } + } + + if(mpTextureCoordinates) + { + mpTextureCoordinates->remove(nIndex, nCount); + + if(!mpTextureCoordinates->isUsed()) + { + mpTextureCoordinates.reset(); + } + } + } + + void flip() + { + if(maPoints.count() <= 1) + return; + + maPoints.flip(); + + if(mbPlaneNormalValid) + { + // mirror plane normal + maPlaneNormal = -maPlaneNormal; + } + + if(mpBColors) + { + mpBColors->flip(); + } + + if(mpNormals) + { + mpNormals->flip(); + } + + if(mpTextureCoordinates) + { + mpTextureCoordinates->flip(); + } + } + + bool hasDoublePoints() const + { + if(mbIsClosed) + { + // check for same start and end point + const sal_uInt32 nIndex(maPoints.count() - 1); + + if(maPoints.getCoordinate(0) == maPoints.getCoordinate(nIndex)) + { + const bool bBColorEqual(!mpBColors || (mpBColors->getBColor(0) == mpBColors->getBColor(nIndex))); + + if(bBColorEqual) + { + const bool bNormalsEqual(!mpNormals || (mpNormals->getNormal(0) == mpNormals->getNormal(nIndex))); + + if(bNormalsEqual) + { + const bool bTextureCoordinatesEqual(!mpTextureCoordinates || (mpTextureCoordinates->getTextureCoordinate(0) == mpTextureCoordinates->getTextureCoordinate(nIndex))); + + if(bTextureCoordinatesEqual) + { + return true; + } + } + } + } + } + + // test for range + for(sal_uInt32 a(0); a < maPoints.count() - 1; a++) + { + if(maPoints.getCoordinate(a) == maPoints.getCoordinate(a + 1)) + { + const bool bBColorEqual(!mpBColors || (mpBColors->getBColor(a) == mpBColors->getBColor(a + 1))); + + if(bBColorEqual) + { + const bool bNormalsEqual(!mpNormals || (mpNormals->getNormal(a) == mpNormals->getNormal(a + 1))); + + if(bNormalsEqual) + { + const bool bTextureCoordinatesEqual(!mpTextureCoordinates || (mpTextureCoordinates->getTextureCoordinate(a) == mpTextureCoordinates->getTextureCoordinate(a + 1))); + + if(bTextureCoordinatesEqual) + { + return true; + } + } + } + } + } + + return false; + } + + void removeDoublePointsAtBeginEnd() + { + // Only remove DoublePoints at Begin and End when poly is closed + if(!mbIsClosed) + return; + + bool bRemove; + + do + { + bRemove = false; + + if(maPoints.count() > 1) + { + const sal_uInt32 nIndex(maPoints.count() - 1); + bRemove = (maPoints.getCoordinate(0) == maPoints.getCoordinate(nIndex)); + + if(bRemove && mpBColors && mpBColors->getBColor(0) != mpBColors->getBColor(nIndex)) + { + bRemove = false; + } + + if(bRemove && mpNormals && mpNormals->getNormal(0) != mpNormals->getNormal(nIndex)) + { + bRemove = false; + } + + if(bRemove && mpTextureCoordinates && mpTextureCoordinates->getTextureCoordinate(0) != mpTextureCoordinates->getTextureCoordinate(nIndex)) + { + bRemove = false; + } + } + + if(bRemove) + { + const sal_uInt32 nIndex(maPoints.count() - 1); + remove(nIndex, 1); + } + } while(bRemove); + } + + void removeDoublePointsWholeTrack() + { + sal_uInt32 nIndex(0); + + // test as long as there are at least two points and as long as the index + // is smaller or equal second last point + while((maPoints.count() > 1) && (nIndex <= maPoints.count() - 2)) + { + const sal_uInt32 nNextIndex(nIndex + 1); + bool bRemove(maPoints.getCoordinate(nIndex) == maPoints.getCoordinate(nNextIndex)); + + if(bRemove && mpBColors && mpBColors->getBColor(nIndex) != mpBColors->getBColor(nNextIndex)) + { + bRemove = false; + } + + if(bRemove && mpNormals && mpNormals->getNormal(nIndex) != mpNormals->getNormal(nNextIndex)) + { + bRemove = false; + } + + if(bRemove && mpTextureCoordinates && mpTextureCoordinates->getTextureCoordinate(nIndex) != mpTextureCoordinates->getTextureCoordinate(nNextIndex)) + { + bRemove = false; + } + + if(bRemove) + { + // if next is same as index and the control vectors are unused, delete index + remove(nIndex, 1); + } + else + { + // if different, step forward + nIndex++; + } + } + } + + void transform(const ::basegfx::B3DHomMatrix& rMatrix) + { + maPoints.transform(rMatrix); + + // Here, it seems to be possible to transform a valid plane normal and to avoid + // invalidation, but it's not true. If the transformation contains shears or e.g. + // perspective projection, the orthogonality to the transformed plane will not + // be preserved. It may be possible to test that at the matrix to not invalidate in + // all cases or to extract a matrix which does not 'shear' the vector which is + // a normal in this case. As long as this is not sure, i will just invalidate. + invalidatePlaneNormal(); + } +}; + +namespace basegfx +{ + namespace { + + B3DPolygon::ImplType const & getDefaultPolygon() { + static B3DPolygon::ImplType const singleton; + return singleton; + } + + } + + B3DPolygon::B3DPolygon() : + mpPolygon(getDefaultPolygon()) + { + } + + B3DPolygon::B3DPolygon(const B3DPolygon&) = default; + + B3DPolygon::B3DPolygon(B3DPolygon&&) = default; + + B3DPolygon::~B3DPolygon() = default; + + B3DPolygon& B3DPolygon::operator=(const B3DPolygon&) = default; + + B3DPolygon& B3DPolygon::operator=(B3DPolygon&&) = default; + + bool B3DPolygon::operator==(const B3DPolygon& rPolygon) const + { + if(mpPolygon.same_object(rPolygon.mpPolygon)) + return true; + + return (*mpPolygon == *rPolygon.mpPolygon); + } + + bool B3DPolygon::operator!=(const B3DPolygon& rPolygon) const + { + return !(*this == rPolygon); + } + + sal_uInt32 B3DPolygon::count() const + { + return mpPolygon->count(); + } + + basegfx::B3DPoint const & B3DPolygon::getB3DPoint(sal_uInt32 nIndex) const + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + return mpPolygon->getPoint(nIndex); + } + + void B3DPolygon::setB3DPoint(sal_uInt32 nIndex, const basegfx::B3DPoint& rValue) + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + if(getB3DPoint(nIndex) != rValue) + mpPolygon->setPoint(nIndex, rValue); + } + + BColor const & B3DPolygon::getBColor(sal_uInt32 nIndex) const + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + return mpPolygon->getBColor(nIndex); + } + + void B3DPolygon::setBColor(sal_uInt32 nIndex, const BColor& rValue) + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + if(mpPolygon->getBColor(nIndex) != rValue) + mpPolygon->setBColor(nIndex, rValue); + } + + bool B3DPolygon::areBColorsUsed() const + { + return mpPolygon->areBColorsUsed(); + } + + void B3DPolygon::clearBColors() + { + if(mpPolygon->areBColorsUsed()) + mpPolygon->clearBColors(); + } + + B3DVector const & B3DPolygon::getNormal() const + { + return mpPolygon->getNormal(); + } + + B3DVector const & B3DPolygon::getNormal(sal_uInt32 nIndex) const + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + return mpPolygon->getNormal(nIndex); + } + + void B3DPolygon::setNormal(sal_uInt32 nIndex, const B3DVector& rValue) + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + if(mpPolygon->getNormal(nIndex) != rValue) + mpPolygon->setNormal(nIndex, rValue); + } + + void B3DPolygon::transformNormals(const B3DHomMatrix& rMatrix) + { + if(mpPolygon->areNormalsUsed() && !rMatrix.isIdentity()) + mpPolygon->transformNormals(rMatrix); + } + + bool B3DPolygon::areNormalsUsed() const + { + return mpPolygon->areNormalsUsed(); + } + + void B3DPolygon::clearNormals() + { + if(mpPolygon->areNormalsUsed()) + mpPolygon->clearNormals(); + } + + B2DPoint const & B3DPolygon::getTextureCoordinate(sal_uInt32 nIndex) const + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + return mpPolygon->getTextureCoordinate(nIndex); + } + + void B3DPolygon::setTextureCoordinate(sal_uInt32 nIndex, const B2DPoint& rValue) + { + OSL_ENSURE(nIndex < mpPolygon->count(), "B3DPolygon access outside range (!)"); + + if(mpPolygon->getTextureCoordinate(nIndex) != rValue) + mpPolygon->setTextureCoordinate(nIndex, rValue); + } + + void B3DPolygon::transformTextureCoordinates(const B2DHomMatrix& rMatrix) + { + if(mpPolygon->areTextureCoordinatesUsed() && !rMatrix.isIdentity()) + mpPolygon->transformTextureCoordinates(rMatrix); + } + + bool B3DPolygon::areTextureCoordinatesUsed() const + { + return mpPolygon->areTextureCoordinatesUsed(); + } + + void B3DPolygon::clearTextureCoordinates() + { + if(mpPolygon->areTextureCoordinatesUsed()) + mpPolygon->clearTextureCoordinates(); + } + + void B3DPolygon::append(const basegfx::B3DPoint& rPoint, sal_uInt32 nCount) + { + if(nCount) + mpPolygon->insert(mpPolygon->count(), rPoint, nCount); + } + + void B3DPolygon::append(const B3DPolygon& rPoly, sal_uInt32 nIndex, sal_uInt32 nCount) + { + if(!rPoly.count()) + return; + + if(!nCount) + { + nCount = rPoly.count(); + } + + if(nIndex == 0 && nCount == rPoly.count()) + { + mpPolygon->insert(mpPolygon->count(), *rPoly.mpPolygon); + } + else + { + OSL_ENSURE(nIndex + nCount <= rPoly.mpPolygon->count(), "B3DPolygon Append outside range (!)"); + ImplB3DPolygon aTempPoly(*rPoly.mpPolygon, nIndex, nCount); + mpPolygon->insert(mpPolygon->count(), aTempPoly); + } + } + + void B3DPolygon::remove(sal_uInt32 nIndex, sal_uInt32 nCount) + { + OSL_ENSURE(nIndex + nCount <= mpPolygon->count(), "B3DPolygon Remove outside range (!)"); + + if(nCount) + mpPolygon->remove(nIndex, nCount); + } + + void B3DPolygon::clear() + { + mpPolygon = getDefaultPolygon(); + } + + bool B3DPolygon::isClosed() const + { + return mpPolygon->isClosed(); + } + + void B3DPolygon::setClosed(bool bNew) + { + if(isClosed() != bNew) + mpPolygon->setClosed(bNew); + } + + void B3DPolygon::flip() + { + if(count() > 1) + mpPolygon->flip(); + } + + bool B3DPolygon::hasDoublePoints() const + { + return (mpPolygon->count() > 1 && mpPolygon->hasDoublePoints()); + } + + void B3DPolygon::removeDoublePoints() + { + if(hasDoublePoints()) + { + mpPolygon->removeDoublePointsAtBeginEnd(); + mpPolygon->removeDoublePointsWholeTrack(); + } + } + + void B3DPolygon::transform(const basegfx::B3DHomMatrix& rMatrix) + { + if(mpPolygon->count() && !rMatrix.isIdentity()) + { + mpPolygon->transform(rMatrix); + } + } +} // end of namespace basegfx + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |