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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /drawinglayer/source/texture/texture.cxx
parentInitial commit. (diff)
downloadlibreoffice-upstream.tar.xz
libreoffice-upstream.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drawinglayer/source/texture/texture.cxx')
-rw-r--r--drawinglayer/source/texture/texture.cxx766
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
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+++ b/drawinglayer/source/texture/texture.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 <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: */