diff options
Diffstat (limited to 'drawinglayer/source/texture/texture.cxx')
| -rw-r--r-- | drawinglayer/source/texture/texture.cxx | 766 |
1 files changed, 766 insertions, 0 deletions
diff --git a/drawinglayer/source/texture/texture.cxx b/drawinglayer/source/texture/texture.cxx new file mode 100644 index 000000000..b3477f642 --- /dev/null +++ b/drawinglayer/source/texture/texture.cxx @@ -0,0 +1,766 @@ +/* -*- 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 <sal/config.h> + +#include <algorithm> + +#include <texture/texture.hxx> +#include <basegfx/numeric/ftools.hxx> +#include <basegfx/utils/gradienttools.hxx> +#include <basegfx/matrix/b2dhommatrixtools.hxx> + +#include <comphelper/random.hxx> + +namespace drawinglayer::texture +{ + namespace + { + double getRandomColorRange() + { + return comphelper::rng::uniform_real_distribution(0.0, nextafter(1.0, DBL_MAX)); + } + } + + GeoTexSvx::GeoTexSvx() + { + } + + GeoTexSvx::~GeoTexSvx() + { + } + + bool GeoTexSvx::operator==(const GeoTexSvx& /*rGeoTexSvx*/) const + { + // default implementation says yes (no data -> no difference) + return true; + } + + void GeoTexSvx::modifyBColor(const basegfx::B2DPoint& /*rUV*/, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + // base implementation creates random color (for testing only, may also be pure virtual) + rBColor.setRed(getRandomColorRange()); + rBColor.setGreen(getRandomColorRange()); + rBColor.setBlue(getRandomColorRange()); + } + + void GeoTexSvx::modifyOpacity(const basegfx::B2DPoint& rUV, double& rfOpacity) const + { + // base implementation uses inverse of luminance of solved color (for testing only, may also be pure virtual) + basegfx::BColor aBaseColor; + modifyBColor(rUV, aBaseColor, rfOpacity); + rfOpacity = 1.0 - aBaseColor.luminance(); + } + + + GeoTexSvxGradient::GeoTexSvxGradient( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + double fBorder) + : maDefinitionRange(rDefinitionRange), + maStart(rStart), + maEnd(rEnd), + mfBorder(fBorder) + { + } + + GeoTexSvxGradient::~GeoTexSvxGradient() + { + } + + bool GeoTexSvxGradient::operator==(const GeoTexSvx& rGeoTexSvx) const + { + const GeoTexSvxGradient* pCompare = dynamic_cast< const GeoTexSvxGradient* >(&rGeoTexSvx); + + return (pCompare + && maGradientInfo == pCompare->maGradientInfo + && maDefinitionRange == pCompare->maDefinitionRange + && mfBorder == pCompare->mfBorder); + } + + + GeoTexSvxGradientLinear::GeoTexSvxGradientLinear( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::B2DRange& rOutputRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fAngle) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder), + mfUnitMinX(0.0), + mfUnitWidth(1.0), + mfUnitMaxY(1.0) + { + maGradientInfo = basegfx::utils::createLinearODFGradientInfo( + rDefinitionRange, + nSteps, + fBorder, + fAngle); + + if(rDefinitionRange != rOutputRange) + { + basegfx::B2DRange aInvOutputRange(rOutputRange); + + aInvOutputRange.transform(maGradientInfo.getBackTextureTransform()); + mfUnitMinX = aInvOutputRange.getMinX(); + mfUnitWidth = aInvOutputRange.getWidth(); + mfUnitMaxY = aInvOutputRange.getMaxY(); + } + } + + GeoTexSvxGradientLinear::~GeoTexSvxGradientLinear() + { + } + + void GeoTexSvxGradientLinear::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maStart; + + if(!maGradientInfo.getSteps()) + return; + + const double fStripeWidth(1.0 / maGradientInfo.getSteps()); + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + basegfx::B2DHomMatrix aPattern; + + // bring from unit circle [-1, -1, 1, 1] to unit range [0, 0, 1, 1] + aPattern.scale(0.5, 0.5); + aPattern.translate(0.5, 0.5); + + // scale and translate in X + aPattern.scale(mfUnitWidth, 1.0); + aPattern.translate(mfUnitMinX, 0.0); + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + const double fPos(fStripeWidth * a); + basegfx::B2DHomMatrix aNew(aPattern); + + // scale and translate in Y + double fHeight(1.0 - fPos); + + if(a + 1 == maGradientInfo.getSteps() && mfUnitMaxY > 1.0) + { + fHeight += mfUnitMaxY - 1.0; + } + + aNew.scale(1.0, fHeight); + aNew.translate(0.0, fPos); + + // set at target + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * aNew; + + // interpolate and set color + aB2DHomMatrixAndBColor.maBColor = interpolate(maStart, maEnd, double(a) / double(maGradientInfo.getSteps() - 1)); + + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientLinear::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getLinearGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + GeoTexSvxGradientAxial::GeoTexSvxGradientAxial( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::B2DRange& rOutputRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fAngle) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder), + mfUnitMinX(0.0), + mfUnitWidth(1.0) + { + maGradientInfo = basegfx::utils::createAxialODFGradientInfo( + rDefinitionRange, + nSteps, + fBorder, + fAngle); + + if(rDefinitionRange != rOutputRange) + { + basegfx::B2DRange aInvOutputRange(rOutputRange); + + aInvOutputRange.transform(maGradientInfo.getBackTextureTransform()); + mfUnitMinX = aInvOutputRange.getMinX(); + mfUnitWidth = aInvOutputRange.getWidth(); + } + } + + GeoTexSvxGradientAxial::~GeoTexSvxGradientAxial() + { + } + + void GeoTexSvxGradientAxial::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maEnd; + + if(!maGradientInfo.getSteps()) + return; + + const double fStripeWidth(1.0 / maGradientInfo.getSteps()); + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + const double fPos(fStripeWidth * a); + basegfx::B2DHomMatrix aNew; + + // bring in X from unit circle [-1, -1, 1, 1] to unit range [0, 0, 1, 1] + aNew.scale(0.5, 1.0); + aNew.translate(0.5, 0.0); + + // scale/translate in X + aNew.scale(mfUnitWidth, 1.0); + aNew.translate(mfUnitMinX, 0.0); + + // already centered in Y on X-Axis, just scale in Y + aNew.scale(1.0, 1.0 - fPos); + + // set at target + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * aNew; + + // interpolate and set color + aB2DHomMatrixAndBColor.maBColor = interpolate(maEnd, maStart, double(a) / double(maGradientInfo.getSteps() - 1)); + + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientAxial::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getAxialGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + + GeoTexSvxGradientRadial::GeoTexSvxGradientRadial( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fOffsetX, + double fOffsetY) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder) + { + maGradientInfo = basegfx::utils::createRadialODFGradientInfo( + rDefinitionRange, + basegfx::B2DVector(fOffsetX,fOffsetY), + nSteps, + fBorder); + } + + GeoTexSvxGradientRadial::~GeoTexSvxGradientRadial() + { + } + + void GeoTexSvxGradientRadial::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maStart; + + if(!maGradientInfo.getSteps()) + return; + + const double fStepSize(1.0 / maGradientInfo.getSteps()); + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + const double fSize(1.0 - (fStepSize * a)); + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * basegfx::utils::createScaleB2DHomMatrix(fSize, fSize); + aB2DHomMatrixAndBColor.maBColor = interpolate(maStart, maEnd, double(a) / double(maGradientInfo.getSteps() - 1)); + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientRadial::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getRadialGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + + GeoTexSvxGradientElliptical::GeoTexSvxGradientElliptical( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fOffsetX, + double fOffsetY, + double fAngle) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder) + { + maGradientInfo = basegfx::utils::createEllipticalODFGradientInfo( + rDefinitionRange, + basegfx::B2DVector(fOffsetX,fOffsetY), + nSteps, + fBorder, + fAngle); + } + + GeoTexSvxGradientElliptical::~GeoTexSvxGradientElliptical() + { + } + + void GeoTexSvxGradientElliptical::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maStart; + + if(!maGradientInfo.getSteps()) + return; + + double fWidth(1.0); + double fHeight(1.0); + double fIncrementX(0.0); + double fIncrementY(0.0); + + if(maGradientInfo.getAspectRatio() > 1.0) + { + fIncrementY = fHeight / maGradientInfo.getSteps(); + fIncrementX = fIncrementY / maGradientInfo.getAspectRatio(); + } + else + { + fIncrementX = fWidth / maGradientInfo.getSteps(); + fIncrementY = fIncrementX * maGradientInfo.getAspectRatio(); + } + + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + // next step + fWidth -= fIncrementX; + fHeight -= fIncrementY; + + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * basegfx::utils::createScaleB2DHomMatrix(fWidth, fHeight); + aB2DHomMatrixAndBColor.maBColor = interpolate(maStart, maEnd, double(a) / double(maGradientInfo.getSteps() - 1)); + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientElliptical::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getEllipticalGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + + GeoTexSvxGradientSquare::GeoTexSvxGradientSquare( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fOffsetX, + double fOffsetY, + double fAngle) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder) + { + maGradientInfo = basegfx::utils::createSquareODFGradientInfo( + rDefinitionRange, + basegfx::B2DVector(fOffsetX,fOffsetY), + nSteps, + fBorder, + fAngle); + } + + GeoTexSvxGradientSquare::~GeoTexSvxGradientSquare() + { + } + + void GeoTexSvxGradientSquare::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maStart; + + if(!maGradientInfo.getSteps()) + return; + + const double fStepSize(1.0 / maGradientInfo.getSteps()); + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + const double fSize(1.0 - (fStepSize * a)); + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * basegfx::utils::createScaleB2DHomMatrix(fSize, fSize); + aB2DHomMatrixAndBColor.maBColor = interpolate(maStart, maEnd, double(a) / double(maGradientInfo.getSteps() - 1)); + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientSquare::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getSquareGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + + GeoTexSvxGradientRect::GeoTexSvxGradientRect( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::BColor& rStart, + const basegfx::BColor& rEnd, + sal_uInt32 nSteps, + double fBorder, + double fOffsetX, + double fOffsetY, + double fAngle) + : GeoTexSvxGradient(rDefinitionRange, rStart, rEnd, fBorder) + { + maGradientInfo = basegfx::utils::createRectangularODFGradientInfo( + rDefinitionRange, + basegfx::B2DVector(fOffsetX,fOffsetY), + nSteps, + fBorder, + fAngle); + } + + GeoTexSvxGradientRect::~GeoTexSvxGradientRect() + { + } + + void GeoTexSvxGradientRect::appendTransformationsAndColors( + std::vector< B2DHomMatrixAndBColor >& rEntries, + basegfx::BColor& rOuterColor) + { + rOuterColor = maStart; + + if(!maGradientInfo.getSteps()) + return; + + double fWidth(1.0); + double fHeight(1.0); + double fIncrementX(0.0); + double fIncrementY(0.0); + + if(maGradientInfo.getAspectRatio() > 1.0) + { + fIncrementY = fHeight / maGradientInfo.getSteps(); + fIncrementX = fIncrementY / maGradientInfo.getAspectRatio(); + } + else + { + fIncrementX = fWidth / maGradientInfo.getSteps(); + fIncrementY = fIncrementX * maGradientInfo.getAspectRatio(); + } + + B2DHomMatrixAndBColor aB2DHomMatrixAndBColor; + + for(sal_uInt32 a(1); a < maGradientInfo.getSteps(); a++) + { + // next step + fWidth -= fIncrementX; + fHeight -= fIncrementY; + + aB2DHomMatrixAndBColor.maB2DHomMatrix = maGradientInfo.getTextureTransform() * basegfx::utils::createScaleB2DHomMatrix(fWidth, fHeight); + aB2DHomMatrixAndBColor.maBColor = interpolate(maStart, maEnd, double(a) / double(maGradientInfo.getSteps() - 1)); + rEntries.push_back(aB2DHomMatrixAndBColor); + } + } + + void GeoTexSvxGradientRect::modifyBColor(const basegfx::B2DPoint& rUV, basegfx::BColor& rBColor, double& /*rfOpacity*/) const + { + const double fScaler(basegfx::utils::getRectangularGradientAlpha(rUV, maGradientInfo)); + + rBColor = basegfx::interpolate(maStart, maEnd, fScaler); + } + + + GeoTexSvxHatch::GeoTexSvxHatch( + const basegfx::B2DRange& rDefinitionRange, + const basegfx::B2DRange& rOutputRange, + double fDistance, + double fAngle) + : maOutputRange(rOutputRange), + mfDistance(0.1), + mfAngle(fAngle), + mnSteps(10), + mbDefinitionRangeEqualsOutputRange(rDefinitionRange == rOutputRange) + { + double fTargetSizeX(rDefinitionRange.getWidth()); + double fTargetSizeY(rDefinitionRange.getHeight()); + double fTargetOffsetX(rDefinitionRange.getMinX()); + double fTargetOffsetY(rDefinitionRange.getMinY()); + + fAngle = -fAngle; + + // add object expansion + if(0.0 != fAngle) + { + const double fAbsCos(fabs(cos(fAngle))); + const double fAbsSin(fabs(sin(fAngle))); + const double fNewX(fTargetSizeX * fAbsCos + fTargetSizeY * fAbsSin); + const double fNewY(fTargetSizeY * fAbsCos + fTargetSizeX * fAbsSin); + fTargetOffsetX -= (fNewX - fTargetSizeX) / 2.0; + fTargetOffsetY -= (fNewY - fTargetSizeY) / 2.0; + fTargetSizeX = fNewX; + fTargetSizeY = fNewY; + } + + // add object scale before rotate + maTextureTransform.scale(fTargetSizeX, fTargetSizeY); + + // add texture rotate after scale to keep perpendicular angles + if(0.0 != fAngle) + { + basegfx::B2DPoint aCenter(0.5, 0.5); + aCenter *= maTextureTransform; + + maTextureTransform = basegfx::utils::createRotateAroundPoint(aCenter, fAngle) + * maTextureTransform; + } + + // add object translate + maTextureTransform.translate(fTargetOffsetX, fTargetOffsetY); + + // prepare height for texture + const double fSteps((0.0 != fDistance) ? fTargetSizeY / fDistance : 10.0); + mnSteps = basegfx::fround(fSteps + 0.5); + mfDistance = 1.0 / fSteps; + } + + GeoTexSvxHatch::~GeoTexSvxHatch() + { + } + + bool GeoTexSvxHatch::operator==(const GeoTexSvx& rGeoTexSvx) const + { + const GeoTexSvxHatch* pCompare = dynamic_cast< const GeoTexSvxHatch* >(&rGeoTexSvx); + return (pCompare + && maOutputRange == pCompare->maOutputRange + && maTextureTransform == pCompare->maTextureTransform + && mfDistance == pCompare->mfDistance + && mfAngle == pCompare->mfAngle + && mnSteps == pCompare->mnSteps); + } + + void GeoTexSvxHatch::appendTransformations(std::vector< basegfx::B2DHomMatrix >& rMatrices) + { + if(mbDefinitionRangeEqualsOutputRange) + { + // simple hatch where the definition area equals the output area + for(sal_uInt32 a(1); a < mnSteps; a++) + { + // create matrix + const double fOffset(mfDistance * static_cast<double>(a)); + basegfx::B2DHomMatrix aNew; + aNew.set(1, 2, fOffset); + rMatrices.push_back(maTextureTransform * aNew); + } + } + else + { + // output area is different from definition area, back-transform to get + // the output area in unit coordinates and fill this with hatch lines + // using the settings derived from the definition area + basegfx::B2DRange aBackUnitRange(maOutputRange); + + aBackUnitRange.transform(getBackTextureTransform()); + + // calculate vertical start value and a security maximum integer value to avoid death loops + double fStart(basegfx::snapToNearestMultiple(aBackUnitRange.getMinY(), mfDistance)); + const sal_uInt32 nNeededIntegerSteps(basegfx::fround((aBackUnitRange.getHeight() / mfDistance) + 0.5)); + sal_uInt32 nMaxIntegerSteps(std::min(nNeededIntegerSteps, sal_uInt32(10000))); + + while(fStart < aBackUnitRange.getMaxY() && nMaxIntegerSteps) + { + // create new transform for + basegfx::B2DHomMatrix aNew; + + // adapt x scale and position + //aNew.scale(aBackUnitRange.getWidth(), 1.0); + //aNew.translate(aBackUnitRange.getMinX(), 0.0); + aNew.set(0, 0, aBackUnitRange.getWidth()); + aNew.set(0, 2, aBackUnitRange.getMinX()); + + // adapt y position to current step + aNew.set(1, 2, fStart); + //aNew.translate(0.0, fStart); + + // add new transformation + rMatrices.push_back(maTextureTransform * aNew); + + // next step + fStart += mfDistance; + nMaxIntegerSteps--; + } + } + } + + double GeoTexSvxHatch::getDistanceToHatch(const basegfx::B2DPoint& rUV) const + { + const basegfx::B2DPoint aCoor(getBackTextureTransform() * rUV); + return fmod(aCoor.getY(), mfDistance); + } + + const basegfx::B2DHomMatrix& GeoTexSvxHatch::getBackTextureTransform() const + { + if(maBackTextureTransform.isIdentity()) + { + const_cast< GeoTexSvxHatch* >(this)->maBackTextureTransform = maTextureTransform; + const_cast< GeoTexSvxHatch* >(this)->maBackTextureTransform.invert(); + } + + return maBackTextureTransform; + } + + + GeoTexSvxTiled::GeoTexSvxTiled( + const basegfx::B2DRange& rRange, + double fOffsetX, + double fOffsetY) + : maRange(rRange), + mfOffsetX(std::clamp(fOffsetX, 0.0, 1.0)), + mfOffsetY(std::clamp(fOffsetY, 0.0, 1.0)) + { + if(!basegfx::fTools::equalZero(mfOffsetX)) + { + mfOffsetY = 0.0; + } + } + + GeoTexSvxTiled::~GeoTexSvxTiled() + { + } + + bool GeoTexSvxTiled::operator==(const GeoTexSvx& rGeoTexSvx) const + { + const GeoTexSvxTiled* pCompare = dynamic_cast< const GeoTexSvxTiled* >(&rGeoTexSvx); + + return (pCompare + && maRange == pCompare->maRange + && mfOffsetX == pCompare->mfOffsetX + && mfOffsetY == pCompare->mfOffsetY); + } + + sal_uInt32 GeoTexSvxTiled::getNumberOfTiles() const + { + sal_Int32 nTiles = 0; + iterateTiles([&](double, double) { ++nTiles; }); + return nTiles; + } + + void GeoTexSvxTiled::appendTransformations(std::vector< basegfx::B2DHomMatrix >& rMatrices) const + { + const double fWidth(maRange.getWidth()); + const double fHeight(maRange.getHeight()); + iterateTiles([&](double fPosX, double fPosY) { + rMatrices.push_back(basegfx::utils::createScaleTranslateB2DHomMatrix( + fWidth, + fHeight, + fPosX, + fPosY)); + }); + } + + void GeoTexSvxTiled::iterateTiles(std::function<void(double fPosX, double fPosY)> aFunc) const + { + const double fWidth(maRange.getWidth()); + + if(basegfx::fTools::equalZero(fWidth)) + return; + + const double fHeight(maRange.getHeight()); + + if(basegfx::fTools::equalZero(fHeight)) + return; + + double fStartX(maRange.getMinX()); + double fStartY(maRange.getMinY()); + sal_Int32 nPosX(0); + sal_Int32 nPosY(0); + + if(basegfx::fTools::more(fStartX, 0.0)) + { + const sal_Int32 nDiff(static_cast<sal_Int32>(floor(fStartX / fWidth)) + 1); + + nPosX -= nDiff; + fStartX -= nDiff * fWidth; + } + + if(basegfx::fTools::less(fStartX + fWidth, 0.0)) + { + const sal_Int32 nDiff(static_cast<sal_Int32>(floor(-fStartX / fWidth))); + + nPosX += nDiff; + fStartX += nDiff * fWidth; + } + + if(basegfx::fTools::more(fStartY, 0.0)) + { + const sal_Int32 nDiff(static_cast<sal_Int32>(floor(fStartY / fHeight)) + 1); + + nPosY -= nDiff; + fStartY -= nDiff * fHeight; + } + + if(basegfx::fTools::less(fStartY + fHeight, 0.0)) + { + const sal_Int32 nDiff(static_cast<sal_Int32>(floor(-fStartY / fHeight))); + + nPosY += nDiff; + fStartY += nDiff * fHeight; + } + + if(!basegfx::fTools::equalZero(mfOffsetY)) + { + for(double fPosX(fStartX); basegfx::fTools::less(fPosX, 1.0); fPosX += fWidth, nPosX++) + { + for(double fPosY((nPosX % 2) ? fStartY - fHeight + (mfOffsetY * fHeight) : fStartY); + basegfx::fTools::less(fPosY, 1.0); fPosY += fHeight) + aFunc(fPosX, fPosY); + } + } + else + { + for(double fPosY(fStartY); basegfx::fTools::less(fPosY, 1.0); fPosY += fHeight, nPosY++) + { + for(double fPosX((nPosY % 2) ? fStartX - fWidth + (mfOffsetX * fWidth) : fStartX); + basegfx::fTools::less(fPosX, 1.0); fPosX += fWidth) + aFunc(fPosX, fPosY); + } + } + + } + +} // end of namespace + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |