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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 <drawinglayer/primitive2d/sceneprimitive2d.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygonclipper.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/processor3d/zbufferprocessor3d.hxx>
#include <drawinglayer/processor3d/shadow3dextractor.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <svtools/optionsdrawinglayer.hxx>
#include <drawinglayer/processor3d/geometry2dextractor.hxx>
#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
#include <basegfx/raster/bzpixelraster.hxx>
#include <vcl/bitmapaccess.hxx>
#include <comphelper/threadpool.hxx>
using namespace com::sun::star;
namespace
{
BitmapEx BPixelRasterToBitmapEx(const basegfx::BPixelRaster& rRaster, sal_uInt16 mnAntiAlialize)
{
BitmapEx aRetval;
const sal_uInt32 nWidth(mnAntiAlialize ? rRaster.getWidth()/mnAntiAlialize : rRaster.getWidth());
const sal_uInt32 nHeight(mnAntiAlialize ? rRaster.getHeight()/mnAntiAlialize : rRaster.getHeight());
if(nWidth && nHeight)
{
const Size aDestSize(nWidth, nHeight);
sal_uInt8 nInitAlpha(255);
Bitmap aContent(aDestSize, 24);
AlphaMask aAlpha(aDestSize, &nInitAlpha);
BitmapWriteAccess* pContent = aContent.AcquireWriteAccess();
BitmapWriteAccess* pAlpha = aAlpha.AcquireWriteAccess();
if (pContent && pAlpha)
{
if(mnAntiAlialize)
{
const sal_uInt16 nDivisor(mnAntiAlialize * mnAntiAlialize);
for(sal_uInt32 y(0L); y < nHeight; y++)
{
for(sal_uInt32 x(0L); x < nWidth; x++)
{
sal_uInt16 nRed(0);
sal_uInt16 nGreen(0);
sal_uInt16 nBlue(0);
sal_uInt16 nOpacity(0);
sal_uInt32 nIndex(rRaster.getIndexFromXY(x * mnAntiAlialize, y * mnAntiAlialize));
for(sal_uInt32 c(0); c < mnAntiAlialize; c++)
{
for(sal_uInt32 d(0); d < mnAntiAlialize; d++)
{
const basegfx::BPixel& rPixel(rRaster.getBPixel(nIndex++));
nRed = nRed + rPixel.getRed();
nGreen = nGreen + rPixel.getGreen();
nBlue = nBlue + rPixel.getBlue();
nOpacity = nOpacity + rPixel.getOpacity();
}
nIndex += rRaster.getWidth() - mnAntiAlialize;
}
nOpacity = nOpacity / nDivisor;
if(nOpacity)
{
pContent->SetPixel(y, x, BitmapColor(
(sal_uInt8)(nRed / nDivisor),
(sal_uInt8)(nGreen / nDivisor),
(sal_uInt8)(nBlue / nDivisor)));
pAlpha->SetPixel(y, x, BitmapColor(255 - (sal_uInt8)nOpacity));
}
}
}
}
else
{
sal_uInt32 nIndex(0L);
for(sal_uInt32 y(0L); y < nHeight; y++)
{
for(sal_uInt32 x(0L); x < nWidth; x++)
{
const basegfx::BPixel& rPixel(rRaster.getBPixel(nIndex++));
if(rPixel.getOpacity())
{
pContent->SetPixel(y, x, BitmapColor(rPixel.getRed(), rPixel.getGreen(), rPixel.getBlue()));
pAlpha->SetPixel(y, x, BitmapColor(255 - rPixel.getOpacity()));
}
}
}
}
}
aAlpha.ReleaseAccess(pAlpha);
Bitmap::ReleaseAccess(pContent);
aRetval = BitmapEx(aContent, aAlpha);
// #i101811# set PrefMapMode and PrefSize at newly created Bitmap
aRetval.SetPrefMapMode(MAP_PIXEL);
aRetval.SetPrefSize(Size(nWidth, nHeight));
}
return aRetval;
}
} // end of anonymous namespace
namespace drawinglayer
{
namespace primitive2d
{
bool ScenePrimitive2D::impGetShadow3D(const geometry::ViewInformation2D& /*rViewInformation*/) const
{
::osl::MutexGuard aGuard( m_aMutex );
// create on demand
if(!mbShadow3DChecked && !getChildren3D().empty())
{
basegfx::B3DVector aLightNormal;
const double fShadowSlant(getSdrSceneAttribute().getShadowSlant());
const basegfx::B3DRange aScene3DRange(getChildren3D().getB3DRange(getViewInformation3D()));
if(maSdrLightingAttribute.getLightVector().size())
{
// get light normal from first light and normalize
aLightNormal = maSdrLightingAttribute.getLightVector()[0].getDirection();
aLightNormal.normalize();
}
// create shadow extraction processor
processor3d::Shadow3DExtractingProcessor aShadowProcessor(
getViewInformation3D(),
getObjectTransformation(),
aLightNormal,
fShadowSlant,
aScene3DRange);
// process local primitives
aShadowProcessor.process(getChildren3D());
// fetch result and set checked flag
const_cast< ScenePrimitive2D* >(this)->maShadowPrimitives = aShadowProcessor.getPrimitive2DSequence();
const_cast< ScenePrimitive2D* >(this)->mbShadow3DChecked = true;
}
// return if there are shadow primitives
return !maShadowPrimitives.empty();
}
void ScenePrimitive2D::calculateDiscreteSizes(
const geometry::ViewInformation2D& rViewInformation,
basegfx::B2DRange& rDiscreteRange,
basegfx::B2DRange& rVisibleDiscreteRange,
basegfx::B2DRange& rUnitVisibleRange) const
{
// use unit range and transform to discrete coordinates
rDiscreteRange = basegfx::B2DRange(0.0, 0.0, 1.0, 1.0);
rDiscreteRange.transform(rViewInformation.getObjectToViewTransformation() * getObjectTransformation());
// clip it against discrete Viewport (if set)
rVisibleDiscreteRange = rDiscreteRange;
if(!rViewInformation.getViewport().isEmpty())
{
rVisibleDiscreteRange.intersect(rViewInformation.getDiscreteViewport());
}
if(rVisibleDiscreteRange.isEmpty())
{
rUnitVisibleRange = rVisibleDiscreteRange;
}
else
{
// create UnitVisibleRange containing unit range values [0.0 .. 1.0] describing
// the relative position of rVisibleDiscreteRange inside rDiscreteRange
const double fDiscreteScaleFactorX(basegfx::fTools::equalZero(rDiscreteRange.getWidth()) ? 1.0 : 1.0 / rDiscreteRange.getWidth());
const double fDiscreteScaleFactorY(basegfx::fTools::equalZero(rDiscreteRange.getHeight()) ? 1.0 : 1.0 / rDiscreteRange.getHeight());
const double fMinX(basegfx::fTools::equal(rVisibleDiscreteRange.getMinX(), rDiscreteRange.getMinX())
? 0.0
: (rVisibleDiscreteRange.getMinX() - rDiscreteRange.getMinX()) * fDiscreteScaleFactorX);
const double fMinY(basegfx::fTools::equal(rVisibleDiscreteRange.getMinY(), rDiscreteRange.getMinY())
? 0.0
: (rVisibleDiscreteRange.getMinY() - rDiscreteRange.getMinY()) * fDiscreteScaleFactorY);
const double fMaxX(basegfx::fTools::equal(rVisibleDiscreteRange.getMaxX(), rDiscreteRange.getMaxX())
? 1.0
: (rVisibleDiscreteRange.getMaxX() - rDiscreteRange.getMinX()) * fDiscreteScaleFactorX);
const double fMaxY(basegfx::fTools::equal(rVisibleDiscreteRange.getMaxY(), rDiscreteRange.getMaxY())
? 1.0
: (rVisibleDiscreteRange.getMaxY() - rDiscreteRange.getMinY()) * fDiscreteScaleFactorY);
rUnitVisibleRange = basegfx::B2DRange(fMinX, fMinY, fMaxX, fMaxY);
}
}
Primitive2DContainer ScenePrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
Primitive2DContainer aRetval;
// create 2D shadows from contained 3D primitives. This creates the shadow primitives on demand and tells if
// there are some or not. Do this at start, the shadow might still be visible even when the scene is not
if(impGetShadow3D(rViewInformation))
{
// test visibility
const basegfx::B2DRange aShadow2DRange(maShadowPrimitives.getB2DRange(rViewInformation));
const basegfx::B2DRange aViewRange(
rViewInformation.getViewport());
if(aViewRange.isEmpty() || aShadow2DRange.overlaps(aViewRange))
{
// add extracted 2d shadows (before 3d scene creations itself)
aRetval = maShadowPrimitives;
}
}
// get the involved ranges (see helper method calculateDiscreteSizes for details)
basegfx::B2DRange aDiscreteRange;
basegfx::B2DRange aVisibleDiscreteRange;
basegfx::B2DRange aUnitVisibleRange;
calculateDiscreteSizes(rViewInformation, aDiscreteRange, aVisibleDiscreteRange, aUnitVisibleRange);
if(!aVisibleDiscreteRange.isEmpty())
{
// test if discrete view size (pixel) maybe too big and limit it
double fViewSizeX(aVisibleDiscreteRange.getWidth());
double fViewSizeY(aVisibleDiscreteRange.getHeight());
const double fViewVisibleArea(fViewSizeX * fViewSizeY);
const SvtOptionsDrawinglayer aDrawinglayerOpt;
const double fMaximumVisibleArea(aDrawinglayerOpt.GetQuadratic3DRenderLimit());
double fReduceFactor(1.0);
if(fViewVisibleArea > fMaximumVisibleArea)
{
fReduceFactor = sqrt(fMaximumVisibleArea / fViewVisibleArea);
fViewSizeX *= fReduceFactor;
fViewSizeY *= fReduceFactor;
}
if(rViewInformation.getReducedDisplayQuality())
{
// when reducing the visualisation is allowed (e.g. an OverlayObject
// only needed for dragging), reduce resolution extra
// to speed up dragging interactions
const double fArea(fViewSizeX * fViewSizeY);
double fReducedVisualisationFactor(1.0 / (sqrt(fArea) * (1.0 / 170.0)));
if(fReducedVisualisationFactor > 1.0)
{
fReducedVisualisationFactor = 1.0;
}
else if(fReducedVisualisationFactor < 0.20)
{
fReducedVisualisationFactor = 0.20;
}
if(fReducedVisualisationFactor != 1.0)
{
fReduceFactor *= fReducedVisualisationFactor;
}
}
// determine the oversample value
static sal_uInt16 nDefaultOversampleValue(3);
const sal_uInt16 nOversampleValue(aDrawinglayerOpt.IsAntiAliasing() ? nDefaultOversampleValue : 0);
geometry::ViewInformation3D aViewInformation3D(getViewInformation3D());
{
// calculate a transformation from DiscreteRange to evtl. rotated/sheared content.
// Start with full transformation from object to discrete units
basegfx::B2DHomMatrix aObjToUnit(rViewInformation.getObjectToViewTransformation() * getObjectTransformation());
// bring to unit coordinates by applying inverse DiscreteRange
aObjToUnit.translate(-aDiscreteRange.getMinX(), -aDiscreteRange.getMinY());
aObjToUnit.scale(1.0 / aDiscreteRange.getWidth(), 1.0 / aDiscreteRange.getHeight());
// calculate transformed user coordinate system
const basegfx::B2DPoint aStandardNull(0.0, 0.0);
const basegfx::B2DPoint aUnitRangeTopLeft(aObjToUnit * aStandardNull);
const basegfx::B2DVector aStandardXAxis(1.0, 0.0);
const basegfx::B2DVector aUnitRangeXAxis(aObjToUnit * aStandardXAxis);
const basegfx::B2DVector aStandardYAxis(0.0, 1.0);
const basegfx::B2DVector aUnitRangeYAxis(aObjToUnit * aStandardYAxis);
if(!aUnitRangeTopLeft.equal(aStandardNull) || !aUnitRangeXAxis.equal(aStandardXAxis) || !aUnitRangeYAxis.equal(aStandardYAxis))
{
// build transformation from unit range to user coordinate system; the unit range
// X and Y axes are the column vectors, the null point is the offset
basegfx::B2DHomMatrix aUnitRangeToUser;
aUnitRangeToUser.set3x2(
aUnitRangeXAxis.getX(), aUnitRangeYAxis.getX(), aUnitRangeTopLeft.getX(),
aUnitRangeXAxis.getY(), aUnitRangeYAxis.getY(), aUnitRangeTopLeft.getY());
// decompose to allow to apply this to the 3D transformation
basegfx::B2DVector aScale, aTranslate;
double fRotate, fShearX;
aUnitRangeToUser.decompose(aScale, aTranslate, fRotate, fShearX);
// apply before DeviceToView and after Projection, 3D is in range [-1.0 .. 1.0] in X,Y and Z
// and not yet flipped in Y
basegfx::B3DHomMatrix aExtendedProjection(aViewInformation3D.getProjection());
// bring to unit coordinates, flip Y, leave Z unchanged
aExtendedProjection.scale(0.5, -0.5, 1.0);
aExtendedProjection.translate(0.5, 0.5, 0.0);
// apply extra; Y is flipped now, go with positive shear and rotate values
aExtendedProjection.scale(aScale.getX(), aScale.getY(), 1.0);
aExtendedProjection.shearXZ(fShearX, 0.0);
aExtendedProjection.rotate(0.0, 0.0, fRotate);
aExtendedProjection.translate(aTranslate.getX(), aTranslate.getY(), 0.0);
// back to state after projection
aExtendedProjection.translate(-0.5, -0.5, 0.0);
aExtendedProjection.scale(2.0, -2.0, 1.0);
aViewInformation3D = geometry::ViewInformation3D(
aViewInformation3D.getObjectTransformation(),
aViewInformation3D.getOrientation(),
aExtendedProjection,
aViewInformation3D.getDeviceToView(),
aViewInformation3D.getViewTime(),
aViewInformation3D.getExtendedInformationSequence());
}
}
// calculate logic render size in world coordinates for usage in renderer
const basegfx::B2DHomMatrix& aInverseOToV(rViewInformation.getInverseObjectToViewTransformation());
const double fLogicX((aInverseOToV * basegfx::B2DVector(aDiscreteRange.getWidth() * fReduceFactor, 0.0)).getLength());
const double fLogicY((aInverseOToV * basegfx::B2DVector(0.0, aDiscreteRange.getHeight() * fReduceFactor)).getLength());
// generate ViewSizes
const double fFullViewSizeX((rViewInformation.getObjectToViewTransformation() * basegfx::B2DVector(fLogicX, 0.0)).getLength());
const double fFullViewSizeY((rViewInformation.getObjectToViewTransformation() * basegfx::B2DVector(0.0, fLogicY)).getLength());
// generate RasterWidth and RasterHeight for visible part
const sal_Int32 nRasterWidth((sal_Int32)basegfx::fround(fFullViewSizeX * aUnitVisibleRange.getWidth()) + 1);
const sal_Int32 nRasterHeight((sal_Int32)basegfx::fround(fFullViewSizeY * aUnitVisibleRange.getHeight()) + 1);
if(nRasterWidth && nRasterHeight)
{
// create view unit buffer
basegfx::BZPixelRaster aBZPixelRaster(
nOversampleValue ? nRasterWidth * nOversampleValue : nRasterWidth,
nOversampleValue ? nRasterHeight * nOversampleValue : nRasterHeight);
// check for parallel execution possibilities
static bool bMultithreadAllowed = true;
sal_Int32 nThreadCount(0);
comphelper::ThreadPool& rThreadPool(comphelper::ThreadPool::getSharedOptimalPool());
if(bMultithreadAllowed)
{
nThreadCount = rThreadPool.getWorkerCount();
if(nThreadCount > 1)
{
// at least use 10px per processor, so limit number of processors to
// target pixel size divided by 10 (which might be zero what is okay)
nThreadCount = std::min(nThreadCount, nRasterHeight / 10);
}
}
if(nThreadCount > 1)
{
class Executor : public comphelper::ThreadTask
{
private:
processor3d::ZBufferProcessor3D* mpZBufferProcessor3D;
const primitive3d::Primitive3DContainer& mrChildren3D;
public:
explicit Executor(
processor3d::ZBufferProcessor3D* pZBufferProcessor3D,
const primitive3d::Primitive3DContainer& rChildren3D)
: mpZBufferProcessor3D(pZBufferProcessor3D),
mrChildren3D(rChildren3D)
{
}
virtual void doWork() override
{
mpZBufferProcessor3D->process(mrChildren3D);
mpZBufferProcessor3D->finish();
delete mpZBufferProcessor3D;
}
};
std::vector< processor3d::ZBufferProcessor3D* > aProcessors;
const sal_uInt32 nLinesPerThread(aBZPixelRaster.getHeight() / nThreadCount);
for(sal_Int32 a(0); a < nThreadCount; a++)
{
processor3d::ZBufferProcessor3D* pNewZBufferProcessor3D = new processor3d::ZBufferProcessor3D(
aViewInformation3D,
getSdrSceneAttribute(),
getSdrLightingAttribute(),
aUnitVisibleRange,
nOversampleValue,
fFullViewSizeX,
fFullViewSizeY,
aBZPixelRaster,
nLinesPerThread * a,
a + 1 == nThreadCount ? aBZPixelRaster.getHeight() : nLinesPerThread * (a + 1));
aProcessors.push_back(pNewZBufferProcessor3D);
Executor* pExecutor = new Executor(pNewZBufferProcessor3D, getChildren3D());
rThreadPool.pushTask(pExecutor);
}
rThreadPool.waitUntilEmpty();
}
else
{
// use default 3D primitive processor to create BitmapEx for aUnitVisiblePart and process
processor3d::ZBufferProcessor3D aZBufferProcessor3D(
aViewInformation3D,
getSdrSceneAttribute(),
getSdrLightingAttribute(),
aUnitVisibleRange,
nOversampleValue,
fFullViewSizeX,
fFullViewSizeY,
aBZPixelRaster,
0,
aBZPixelRaster.getHeight());
aZBufferProcessor3D.process(getChildren3D());
aZBufferProcessor3D.finish();
}
const_cast< ScenePrimitive2D* >(this)->maOldRenderedBitmap = BPixelRasterToBitmapEx(aBZPixelRaster, nOversampleValue);
const Size aBitmapSizePixel(maOldRenderedBitmap.GetSizePixel());
if(aBitmapSizePixel.getWidth() && aBitmapSizePixel.getHeight())
{
// create transform for the created bitmap in discrete coordinates first.
basegfx::B2DHomMatrix aNew2DTransform;
aNew2DTransform.set(0, 0, aVisibleDiscreteRange.getWidth());
aNew2DTransform.set(1, 1, aVisibleDiscreteRange.getHeight());
aNew2DTransform.set(0, 2, aVisibleDiscreteRange.getMinX());
aNew2DTransform.set(1, 2, aVisibleDiscreteRange.getMinY());
// transform back to world coordinates for usage in primitive creation
aNew2DTransform *= aInverseOToV;
// create bitmap primitive and add
const Primitive2DReference xRef(new BitmapPrimitive2D(maOldRenderedBitmap, aNew2DTransform));
aRetval.push_back(xRef);
// test: Allow to add an outline in the debugger when tests are needed
static bool bAddOutlineToCreated3DSceneRepresentation(false);
if(bAddOutlineToCreated3DSceneRepresentation)
{
basegfx::B2DPolygon aOutline(basegfx::tools::createUnitPolygon());
aOutline.transform(aNew2DTransform);
const Primitive2DReference xRef2(new PolygonHairlinePrimitive2D(aOutline, basegfx::BColor(1.0, 0.0, 0.0)));
aRetval.push_back(xRef2);
}
}
}
}
return aRetval;
}
Primitive2DContainer ScenePrimitive2D::getGeometry2D() const
{
Primitive2DContainer aRetval;
// create 2D projected geometry from 3D geometry
if(!getChildren3D().empty())
{
// create 2D geometry extraction processor
processor3d::Geometry2DExtractingProcessor aGeometryProcessor(
getViewInformation3D(),
getObjectTransformation());
// process local primitives
aGeometryProcessor.process(getChildren3D());
// fetch result
aRetval = aGeometryProcessor.getPrimitive2DSequence();
}
return aRetval;
}
Primitive2DContainer ScenePrimitive2D::getShadow2D(const geometry::ViewInformation2D& rViewInformation) const
{
Primitive2DContainer aRetval;
// create 2D shadows from contained 3D primitives
if(impGetShadow3D(rViewInformation))
{
// add extracted 2d shadows (before 3d scene creations itself)
aRetval = maShadowPrimitives;
}
return aRetval;
}
bool ScenePrimitive2D::tryToCheckLastVisualisationDirectHit(const basegfx::B2DPoint& rLogicHitPoint, bool& o_rResult) const
{
if(!maOldRenderedBitmap.IsEmpty() && !maOldUnitVisiblePart.isEmpty())
{
basegfx::B2DHomMatrix aInverseSceneTransform(getObjectTransformation());
aInverseSceneTransform.invert();
const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * rLogicHitPoint);
if(maOldUnitVisiblePart.isInside(aRelativePoint))
{
// calculate coordinates relative to visualized part
double fDivisorX(maOldUnitVisiblePart.getWidth());
double fDivisorY(maOldUnitVisiblePart.getHeight());
if(basegfx::fTools::equalZero(fDivisorX))
{
fDivisorX = 1.0;
}
if(basegfx::fTools::equalZero(fDivisorY))
{
fDivisorY = 1.0;
}
const double fRelativeX((aRelativePoint.getX() - maOldUnitVisiblePart.getMinX()) / fDivisorX);
const double fRelativeY((aRelativePoint.getY() - maOldUnitVisiblePart.getMinY()) / fDivisorY);
// combine with real BitmapSizePixel to get bitmap coordinates
const Size aBitmapSizePixel(maOldRenderedBitmap.GetSizePixel());
const sal_Int32 nX(basegfx::fround(fRelativeX * aBitmapSizePixel.Width()));
const sal_Int32 nY(basegfx::fround(fRelativeY * aBitmapSizePixel.Height()));
// try to get a statement about transparency in that pixel
o_rResult = (0xff != maOldRenderedBitmap.GetTransparency(nX, nY));
return true;
}
}
return false;
}
ScenePrimitive2D::ScenePrimitive2D(
const primitive3d::Primitive3DContainer& rxChildren3D,
const attribute::SdrSceneAttribute& rSdrSceneAttribute,
const attribute::SdrLightingAttribute& rSdrLightingAttribute,
const basegfx::B2DHomMatrix& rObjectTransformation,
const geometry::ViewInformation3D& rViewInformation3D)
: BufferedDecompositionPrimitive2D(),
mxChildren3D(rxChildren3D),
maSdrSceneAttribute(rSdrSceneAttribute),
maSdrLightingAttribute(rSdrLightingAttribute),
maObjectTransformation(rObjectTransformation),
maViewInformation3D(rViewInformation3D),
maShadowPrimitives(),
mbShadow3DChecked(false),
mfOldDiscreteSizeX(0.0),
mfOldDiscreteSizeY(0.0),
maOldUnitVisiblePart(),
maOldRenderedBitmap()
{
}
bool ScenePrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
if(BufferedDecompositionPrimitive2D::operator==(rPrimitive))
{
const ScenePrimitive2D& rCompare = static_cast<const ScenePrimitive2D&>(rPrimitive);
return (getChildren3D() == rCompare.getChildren3D()
&& getSdrSceneAttribute() == rCompare.getSdrSceneAttribute()
&& getSdrLightingAttribute() == rCompare.getSdrLightingAttribute()
&& getObjectTransformation() == rCompare.getObjectTransformation()
&& getViewInformation3D() == rCompare.getViewInformation3D());
}
return false;
}
basegfx::B2DRange ScenePrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
{
// transform unit range to discrete coordinate range
basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
aRetval.transform(rViewInformation.getObjectToViewTransformation() * getObjectTransformation());
// force to discrete expanded bounds (it grows, so expanding works perfectly well)
aRetval.expand(basegfx::B2DTuple(floor(aRetval.getMinX()), floor(aRetval.getMinY())));
aRetval.expand(basegfx::B2DTuple(ceil(aRetval.getMaxX()), ceil(aRetval.getMaxY())));
// transform back from discrete (view) to world coordinates
aRetval.transform(rViewInformation.getInverseObjectToViewTransformation());
// expand by evtl. existing shadow primitives
if(impGetShadow3D(rViewInformation))
{
const basegfx::B2DRange aShadow2DRange(maShadowPrimitives.getB2DRange(rViewInformation));
if(!aShadow2DRange.isEmpty())
{
aRetval.expand(aShadow2DRange);
}
}
return aRetval;
}
Primitive2DContainer ScenePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
{
::osl::MutexGuard aGuard( m_aMutex );
// get the involved ranges (see helper method calculateDiscreteSizes for details)
basegfx::B2DRange aDiscreteRange;
basegfx::B2DRange aUnitVisibleRange;
bool bNeedNewDecomposition(false);
bool bDiscreteSizesAreCalculated(false);
if(!getBuffered2DDecomposition().empty())
{
basegfx::B2DRange aVisibleDiscreteRange;
calculateDiscreteSizes(rViewInformation, aDiscreteRange, aVisibleDiscreteRange, aUnitVisibleRange);
bDiscreteSizesAreCalculated = true;
// needs to be painted when the new part is not part of the last
// decomposition
if(!maOldUnitVisiblePart.isInside(aUnitVisibleRange))
{
bNeedNewDecomposition = true;
}
// display has changed and cannot be reused when resolution got bigger. It
// can be reused when resolution got smaller, though.
if(!bNeedNewDecomposition)
{
if(basegfx::fTools::more(aDiscreteRange.getWidth(), mfOldDiscreteSizeX) ||
basegfx::fTools::more(aDiscreteRange.getHeight(), mfOldDiscreteSizeY))
{
bNeedNewDecomposition = true;
}
}
}
if(bNeedNewDecomposition)
{
// conditions of last local decomposition have changed, delete
const_cast< ScenePrimitive2D* >(this)->setBuffered2DDecomposition(Primitive2DContainer());
}
if(getBuffered2DDecomposition().empty())
{
if(!bDiscreteSizesAreCalculated)
{
basegfx::B2DRange aVisibleDiscreteRange;
calculateDiscreteSizes(rViewInformation, aDiscreteRange, aVisibleDiscreteRange, aUnitVisibleRange);
}
// remember last used NewDiscreteSize and NewUnitVisiblePart
ScenePrimitive2D* pThat = const_cast< ScenePrimitive2D* >(this);
pThat->mfOldDiscreteSizeX = aDiscreteRange.getWidth();
pThat->mfOldDiscreteSizeY = aDiscreteRange.getHeight();
pThat->maOldUnitVisiblePart = aUnitVisibleRange;
}
// use parent implementation
return BufferedDecompositionPrimitive2D::get2DDecomposition(rViewInformation);
}
// provide unique ID
ImplPrimitive2DIDBlock(ScenePrimitive2D, PRIMITIVE2D_ID_SCENEPRIMITIVE2D)
} // end of namespace primitive2d
} // end of namespace drawinglayer
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