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Diffstat (limited to 'drawinglayer/source/processor3d/zbufferprocessor3d.cxx')
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1 files changed, 747 insertions, 0 deletions
diff --git a/drawinglayer/source/processor3d/zbufferprocessor3d.cxx b/drawinglayer/source/processor3d/zbufferprocessor3d.cxx new file mode 100644 index 000000000000..48c1bee86575 --- /dev/null +++ b/drawinglayer/source/processor3d/zbufferprocessor3d.cxx @@ -0,0 +1,747 @@ +/************************************************************************* + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: zbufferprocessor3d.cxx,v $ + * + * $Revision: 1.5 $ + * + * last change: $Author: aw $ $Date: 2008-06-24 15:31:09 $ + * + * The Contents of this file are made available subject to + * the terms of GNU Lesser General Public License Version 2.1. + * + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2005 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_drawinglayer.hxx" + +#include <drawinglayer/processor3d/zbufferprocessor3d.hxx> +#include <basegfx/raster/bpixelraster.hxx> +#include <vcl/bmpacc.hxx> +#include <basegfx/raster/rasterconvert3d.hxx> +#include <basegfx/raster/bzpixelraster.hxx> +#include <drawinglayer/attribute/materialattribute3d.hxx> +#include <drawinglayer/texture/texture.hxx> +#include <drawinglayer/attribute/sdrattribute3d.hxx> +#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx> +#include <drawinglayer/primitive3d/textureprimitive3d.hxx> +#include <drawinglayer/primitive3d/polygonprimitive3d.hxx> +#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx> +#include <drawinglayer/geometry/viewinformation2d.hxx> +#include <basegfx/polygon/b3dpolygontools.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())); + } + } + } + } + + delete pContent; + delete pAlpha; + } + + aRetval = BitmapEx(aContent, aAlpha); + + // #i101811# set PrefMapMode and PrefSize at newly created Bitmap + aRetval.SetPrefMapMode(MAP_100TH_MM); + aRetval.SetPrefSize(Size(nWidth, nHeight)); + } + + return aRetval; + } +} // end of anonymous namespace + +////////////////////////////////////////////////////////////////////////////// + +class ZBufferRasterConverter3D : public basegfx::RasterConverter3D +{ +private: + const drawinglayer::processor3d::DefaultProcessor3D& mrProcessor; + basegfx::BZPixelRaster& mrBuffer; + + // interpolators for a single line span + basegfx::ip_single maIntZ; + basegfx::ip_triple maIntColor; + basegfx::ip_triple maIntNormal; + basegfx::ip_double maIntTexture; + basegfx::ip_triple maIntInvTexture; + + // current material to use for ratsreconversion + const drawinglayer::attribute::MaterialAttribute3D* mpCurrentMaterial; + + // bitfield + // some boolean flags for line span interpolator usages + unsigned mbModifyColor : 1; + unsigned mbUseTex : 1; + unsigned mbHasTexCoor : 1; + unsigned mbHasInvTexCoor : 1; + unsigned mbUseNrm : 1; + unsigned mbUseCol : 1; + + void getTextureCoor(basegfx::B2DPoint& rTarget) const + { + if(mbHasTexCoor) + { + rTarget.setX(maIntTexture.getX().getVal()); + rTarget.setY(maIntTexture.getY().getVal()); + } + else if(mbHasInvTexCoor) + { + const double fZFactor(maIntInvTexture.getZ().getVal()); + const double fInvZFactor(basegfx::fTools::equalZero(fZFactor) ? 1.0 : 1.0 / fZFactor); + rTarget.setX(maIntInvTexture.getX().getVal() * fInvZFactor); + rTarget.setY(maIntInvTexture.getY().getVal() * fInvZFactor); + } + } + + void incrementLineSpanInterpolators(double fStep) + { + maIntZ.increment(fStep); + + if(mbUseTex) + { + if(mbHasTexCoor) + { + maIntTexture.increment(fStep); + } + else if(mbHasInvTexCoor) + { + maIntInvTexture.increment(fStep); + } + } + + if(mbUseNrm) + { + maIntNormal.increment(fStep); + } + + if(mbUseCol) + { + maIntColor.increment(fStep); + } + } + + double decideColorAndOpacity(basegfx::BColor& rColor) + { + // init values with full opacity and material color + OSL_ENSURE(0 != mpCurrentMaterial, "CurrentMaterial not set (!)"); + double fOpacity(1.0); + rColor = mpCurrentMaterial->getColor(); + + if(mbUseTex) + { + basegfx::B2DPoint aTexCoor(0.0, 0.0); + getTextureCoor(aTexCoor); + + if(mrProcessor.getGeoTexSvx()) + { + // calc color in spot. This may also set to invisible already when + // e.g. bitmap textures have transparent parts + mrProcessor.getGeoTexSvx()->modifyBColor(aTexCoor, rColor, fOpacity); + } + + if(basegfx::fTools::more(fOpacity, 0.0) && mrProcessor.getTransparenceGeoTexSvx()) + { + // calc opacity. Object has a 2nd texture, a transparence texture + mrProcessor.getTransparenceGeoTexSvx()->modifyOpacity(aTexCoor, fOpacity); + } + } + + if(basegfx::fTools::more(fOpacity, 0.0)) + { + if(mrProcessor.getGeoTexSvx()) + { + if(mbUseNrm) + { + // blend texture with phong + rColor = mrProcessor.getSdrLightingAttribute().solveColorModel( + basegfx::B3DVector(maIntNormal.getX().getVal(), maIntNormal.getY().getVal(), maIntNormal.getZ().getVal()), + rColor, + mpCurrentMaterial->getSpecular(), + mpCurrentMaterial->getEmission(), + mpCurrentMaterial->getSpecularIntensity()); + } + else if(mbUseCol) + { + // blend texture with gouraud + basegfx::BColor aBlendColor(maIntColor.getX().getVal(), maIntColor.getY().getVal(), maIntColor.getZ().getVal()); + rColor *= aBlendColor; + } + else if(mrProcessor.getModulate()) + { + // blend texture with single material color + rColor *= mpCurrentMaterial->getColor(); + } + } + else + { + if(mbUseNrm) + { + // modify color with phong + rColor = mrProcessor.getSdrLightingAttribute().solveColorModel( + basegfx::B3DVector(maIntNormal.getX().getVal(), maIntNormal.getY().getVal(), maIntNormal.getZ().getVal()), + rColor, + mpCurrentMaterial->getSpecular(), + mpCurrentMaterial->getEmission(), + mpCurrentMaterial->getSpecularIntensity()); + } + else if(mbUseCol) + { + // modify color with gouraud + rColor.setRed(maIntColor.getX().getVal()); + rColor.setGreen(maIntColor.getY().getVal()); + rColor.setBlue(maIntColor.getZ().getVal()); + } + } + + if(mbModifyColor) + { + rColor = mrProcessor.getBColorModifierStack().getModifiedColor(rColor); + } + } + + return fOpacity; + } + + void setupLineSpanInterpolators(const basegfx::RasterConversionLineEntry3D& rA, const basegfx::RasterConversionLineEntry3D& rB) + { + // get inverse XDelta + const double xInvDelta(1.0 / (rB.getX().getVal() - rA.getX().getVal())); + + // prepare Z-interpolator + const double fZA(rA.getZ().getVal()); + const double fZB(rB.getZ().getVal()); + maIntZ = basegfx::ip_single(fZA, (fZB - fZA) * xInvDelta); + + // get bools and init other interpolators on demand accordingly + mbModifyColor = mrProcessor.getBColorModifierStack().count(); + mbHasTexCoor = SCANLINE_EMPTY_INDEX != rA.getTextureIndex() && SCANLINE_EMPTY_INDEX != rB.getTextureIndex(); + mbHasInvTexCoor = SCANLINE_EMPTY_INDEX != rA.getInverseTextureIndex() && SCANLINE_EMPTY_INDEX != rB.getInverseTextureIndex(); + const bool bTextureActive(mrProcessor.getGeoTexSvx() || mrProcessor.getTransparenceGeoTexSvx()); + mbUseTex = bTextureActive && (mbHasTexCoor || mbHasInvTexCoor || mrProcessor.getSimpleTextureActive()); + const bool bUseColorTex(mbUseTex && mrProcessor.getGeoTexSvx()); + const bool bNeedNrmOrCol(!bUseColorTex || (bUseColorTex && mrProcessor.getModulate())); + mbUseNrm = bNeedNrmOrCol && SCANLINE_EMPTY_INDEX != rA.getNormalIndex() && SCANLINE_EMPTY_INDEX != rB.getNormalIndex(); + mbUseCol = !mbUseNrm && bNeedNrmOrCol && SCANLINE_EMPTY_INDEX != rA.getColorIndex() && SCANLINE_EMPTY_INDEX != rB.getColorIndex(); + + if(mbUseTex) + { + if(mbHasTexCoor) + { + const basegfx::ip_double& rTA(getTextureInterpolators()[rA.getTextureIndex()]); + const basegfx::ip_double& rTB(getTextureInterpolators()[rB.getTextureIndex()]); + maIntTexture = basegfx::ip_double( + rTA.getX().getVal(), (rTB.getX().getVal() - rTA.getX().getVal()) * xInvDelta, + rTA.getY().getVal(), (rTB.getY().getVal() - rTA.getY().getVal()) * xInvDelta); + } + else if(mbHasInvTexCoor) + { + const basegfx::ip_triple& rITA(getInverseTextureInterpolators()[rA.getInverseTextureIndex()]); + const basegfx::ip_triple& rITB(getInverseTextureInterpolators()[rB.getInverseTextureIndex()]); + maIntInvTexture = basegfx::ip_triple( + rITA.getX().getVal(), (rITB.getX().getVal() - rITA.getX().getVal()) * xInvDelta, + rITA.getY().getVal(), (rITB.getY().getVal() - rITA.getY().getVal()) * xInvDelta, + rITA.getZ().getVal(), (rITB.getZ().getVal() - rITA.getZ().getVal()) * xInvDelta); + } + } + + if(mbUseNrm) + { + const basegfx::ip_triple& rNA(getNormalInterpolators()[rA.getNormalIndex()]); + const basegfx::ip_triple& rNB(getNormalInterpolators()[rB.getNormalIndex()]); + maIntNormal = basegfx::ip_triple( + rNA.getX().getVal(), (rNB.getX().getVal() - rNA.getX().getVal()) * xInvDelta, + rNA.getY().getVal(), (rNB.getY().getVal() - rNA.getY().getVal()) * xInvDelta, + rNA.getZ().getVal(), (rNB.getZ().getVal() - rNA.getZ().getVal()) * xInvDelta); + } + + if(mbUseCol) + { + const basegfx::ip_triple& rCA(getColorInterpolators()[rA.getColorIndex()]); + const basegfx::ip_triple& rCB(getColorInterpolators()[rB.getColorIndex()]); + maIntColor = basegfx::ip_triple( + rCA.getX().getVal(), (rCB.getX().getVal() - rCA.getX().getVal()) * xInvDelta, + rCA.getY().getVal(), (rCB.getY().getVal() - rCA.getY().getVal()) * xInvDelta, + rCA.getZ().getVal(), (rCB.getZ().getVal() - rCA.getZ().getVal()) * xInvDelta); + } + } + + virtual void processLineSpan(const basegfx::RasterConversionLineEntry3D& rA, const basegfx::RasterConversionLineEntry3D& rB, sal_Int32 nLine, sal_uInt32 nSpanCount); + +public: + ZBufferRasterConverter3D(basegfx::BZPixelRaster& rBuffer, const drawinglayer::processor3d::ZBufferProcessor3D& rProcessor) + : basegfx::RasterConverter3D(), + mrProcessor(rProcessor), + mrBuffer(rBuffer), + maIntZ(), + maIntColor(), + maIntNormal(), + maIntTexture(), + maIntInvTexture(), + mpCurrentMaterial(0), + mbModifyColor(false), + mbUseTex(false), + mbHasTexCoor(false), + mbUseNrm(false), + mbUseCol(false) + {} + + void setCurrentMaterial(const drawinglayer::attribute::MaterialAttribute3D& rMaterial) + { + mpCurrentMaterial = &rMaterial; + } +}; + +void ZBufferRasterConverter3D::processLineSpan(const basegfx::RasterConversionLineEntry3D& rA, const basegfx::RasterConversionLineEntry3D& rB, sal_Int32 nLine, sal_uInt32 nSpanCount) +{ + if(!(nSpanCount & 0x0001)) + { + if(nLine >= 0 && nLine < (sal_Int32)mrBuffer.getHeight()) + { + sal_uInt32 nXA(::std::min(mrBuffer.getWidth(), (sal_uInt32)::std::max((sal_Int32)0, basegfx::fround(rA.getX().getVal())))); + const sal_uInt32 nXB(::std::min(mrBuffer.getWidth(), (sal_uInt32)::std::max((sal_Int32)0, basegfx::fround(rB.getX().getVal())))); + + if(nXA < nXB) + { + // prepare the span interpolators + setupLineSpanInterpolators(rA, rB); + + // bring span interpolators to start condition by incrementing with the possible difference of + // clamped and non-clamped XStart. Interpolators are setup relying on double precision + // X-values, so that difference is the correct value to compensate for possible clampings + incrementLineSpanInterpolators(static_cast<double>(nXA) - rA.getX().getVal()); + + // prepare scanline index + sal_uInt32 nScanlineIndex(mrBuffer.getIndexFromXY(nXA, static_cast<sal_uInt32>(nLine))); + basegfx::BColor aNewColor; + + while(nXA < nXB) + { + // early-test Z values if we need to do anything at all + const double fNewZ(::std::max(0.0, ::std::min((double)0xffff, maIntZ.getVal()))); + const sal_uInt16 nNewZ(static_cast< sal_uInt16 >(fNewZ)); + sal_uInt16& rOldZ(mrBuffer.getZ(nScanlineIndex)); + + if(nNewZ > rOldZ) + { + // detect color and opacity for this pixel + const sal_uInt16 nOpacity(::std::max((sal_Int16)0, static_cast< sal_Int16 >(decideColorAndOpacity(aNewColor) * 255.0))); + + if(nOpacity > 0) + { + // avoid color overrun + aNewColor.clamp(); + + if(nOpacity >= 0x00ff) + { + // full opacity, set z and color + rOldZ = nNewZ; + mrBuffer.getBPixel(nScanlineIndex) = basegfx::BPixel(aNewColor, 0xff); + } + else + { + basegfx::BPixel& rDest = mrBuffer.getBPixel(nScanlineIndex); + + if(rDest.getOpacity()) + { + // both transparent, mix color based on front pixel's opacity + // (the new one) + const sal_uInt16 nTransparence(0x0100 - nOpacity); + rDest.setRed((sal_uInt8)(((rDest.getRed() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getRed()) * nOpacity)) >> 8)); + rDest.setGreen((sal_uInt8)(((rDest.getGreen() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getGreen()) * nOpacity)) >> 8)); + rDest.setBlue((sal_uInt8)(((rDest.getBlue() * nTransparence) + ((sal_uInt16)(255.0 * aNewColor.getBlue()) * nOpacity)) >> 8)); + + if(0xff != rDest.getOpacity()) + { + // destination is also transparent, mix opacities by weighting + // old opacity with new pixel's transparence and adding new opacity + rDest.setOpacity((sal_uInt8)(((rDest.getOpacity() * nTransparence) >> 8) + nOpacity)); + } + } + else + { + // dest is not visible. Set color. + rDest = basegfx::BPixel(aNewColor, (sal_uInt8)nOpacity); + } + } + } + } + + // increments + nScanlineIndex++; + nXA++; + incrementLineSpanInterpolators(1.0); + } + } + } + } +} + +////////////////////////////////////////////////////////////////////////////// + +namespace drawinglayer +{ + namespace processor3d + { + // the processing method for a single, known primitive + void ZBufferProcessor3D::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rBasePrimitive) + { + // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch + switch(rBasePrimitive.getPrimitive3DID()) + { + case PRIMITIVE3D_ID_ALPHATEXTUREPRIMITIVE3D : + { + // AlphaTexturePrimitive3D + const primitive3d::AlphaTexturePrimitive3D& rPrimitive = static_cast< const primitive3d::AlphaTexturePrimitive3D& >(rBasePrimitive); + + if(mbProcessTransparent) + { + impRenderGradientTexturePrimitive3D(rPrimitive, true); + } + else + { + mbContainsTransparent = true; + } + break; + } + case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D : + { + // directdraw of PolygonHairlinePrimitive3D + const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rBasePrimitive); + + // do something when either not transparent and no transMap, or transparent and a TransMap + if((bool)mbProcessTransparent == (0 != getTransparenceGeoTexSvx())) + { + impRenderPolygonHairlinePrimitive3D(rPrimitive); + } + break; + } + case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D : + { + // directdraw of PolyPolygonMaterialPrimitive3D + const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rBasePrimitive); + + // do something when either not transparent and no transMap, or transparent and a TransMap + if((bool)mbProcessTransparent == (0 != getTransparenceGeoTexSvx())) + { + impRenderPolyPolygonMaterialPrimitive3D(rPrimitive); + } + break; + } + default: + { + // use the DefaultProcessor3D::processBasePrimitive3D() + DefaultProcessor3D::processBasePrimitive3D(rBasePrimitive); + break; + } + } + } + + void ZBufferProcessor3D::processNonTransparent(const primitive3d::Primitive3DSequence& rSource) + { + if(mpBZPixelRaster) + { + mbProcessTransparent = false; + mbContainsTransparent = false; + process(rSource); + } + } + + void ZBufferProcessor3D::processTransparent(const primitive3d::Primitive3DSequence& rSource) + { + if(mpBZPixelRaster && mbContainsTransparent) + { + mbProcessTransparent = true; + process(rSource); + } + } + + void ZBufferProcessor3D::rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const + { + if(mpBZPixelRaster) + { + mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial); + + if(mnAntiAlialize > 1) + { + const bool bForceLineSnap(getOptionsDrawinglayer().IsAntiAliasing() && getOptionsDrawinglayer().IsSnapHorVerLinesToDiscrete()); + + if(bForceLineSnap) + { + basegfx::B3DHomMatrix aTransform; + basegfx::B3DPolygon aSnappedHairline(rHairline); + const double fScaleDown(1.0 / mnAntiAlialize); + const double fScaleUp(mnAntiAlialize); + + // take oversampling out + aTransform.scale(fScaleDown, fScaleDown, 1.0); + aSnappedHairline.transform(aTransform); + + // snap to integer + aSnappedHairline = basegfx::tools::snapPointsOfHorizontalOrVerticalEdges(aSnappedHairline); + + // add oversampling again + aTransform.identity(); + aTransform.scale(fScaleUp, fScaleUp, 1.0); + + if(false) + { + // when really want to go to single pixel lines, move to center. + // Without this translation, all hor/ver hairlines will be centered exactly + // between two pixel lines (which looks best) + const double fTranslateToCenter(mnAntiAlialize * 0.5); + aTransform.translate(fTranslateToCenter, fTranslateToCenter, 0.0); + } + + aSnappedHairline.transform(aTransform); + + mpZBufferRasterConverter3D->rasterconvertB3DPolygon(aSnappedHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize); + } + else + { + mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), mnAntiAlialize); + } + } + else + { + mpZBufferRasterConverter3D->rasterconvertB3DPolygon(rHairline, 0, mpBZPixelRaster->getHeight(), 1); + } + } + } + + void ZBufferProcessor3D::rasterconvertB3DPolyPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolyPolygon& rFill) const + { + if(mpBZPixelRaster) + { + mpZBufferRasterConverter3D->setCurrentMaterial(rMaterial); + mpZBufferRasterConverter3D->rasterconvertB3DPolyPolygon(rFill, &maInvEyeToView, 0, mpBZPixelRaster->getHeight()); + } + } + + ZBufferProcessor3D::ZBufferProcessor3D( + const geometry::ViewInformation3D& rViewInformation3D, + const geometry::ViewInformation2D& rViewInformation2D, + const attribute::SdrSceneAttribute& rSdrSceneAttribute, + const attribute::SdrLightingAttribute& rSdrLightingAttribute, + double fSizeX, + double fSizeY, + const basegfx::B2DRange& rVisiblePart, + sal_uInt16 nAntiAlialize) + : DefaultProcessor3D(rViewInformation3D, rSdrSceneAttribute, rSdrLightingAttribute), + mpBZPixelRaster(0), + maInvEyeToView(), + mpZBufferRasterConverter3D(0), + mnAntiAlialize(nAntiAlialize), + mbProcessTransparent(false), + mbContainsTransparent(false) + { + // generate ViewSizes + const double fFullViewSizeX((rViewInformation2D.getObjectToViewTransformation() * basegfx::B2DVector(fSizeX, 0.0)).getLength()); + const double fFullViewSizeY((rViewInformation2D.getObjectToViewTransformation() * basegfx::B2DVector(0.0, fSizeY)).getLength()); + const double fViewSizeX(fFullViewSizeX * rVisiblePart.getWidth()); + const double fViewSizeY(fFullViewSizeY * rVisiblePart.getHeight()); + + // generate RasterWidth and RasterHeight + const sal_uInt32 nRasterWidth((sal_uInt32)basegfx::fround(fViewSizeX) + 1); + const sal_uInt32 nRasterHeight((sal_uInt32)basegfx::fround(fViewSizeY) + 1); + + if(nRasterWidth && nRasterHeight) + { + // create view unit buffer + mpBZPixelRaster = new basegfx::BZPixelRaster( + mnAntiAlialize ? nRasterWidth * mnAntiAlialize : nRasterWidth, + mnAntiAlialize ? nRasterHeight * mnAntiAlialize : nRasterHeight); + OSL_ENSURE(mpBZPixelRaster, "ZBufferProcessor3D: Could not allocate basegfx::BZPixelRaster (!)"); + + // create DeviceToView for Z-Buffer renderer since Z is handled + // different from standard 3D transformations (Z is mirrored). Also + // the transformation includes the step from unit device coordinates + // to discrete units ([-1.0 .. 1.0] -> [minDiscrete .. maxDiscrete] + + basegfx::B3DHomMatrix aDeviceToView; + + { + // step one: + // + // bring from [-1.0 .. 1.0] in X,Y and Z to [0.0 .. 1.0]. Also + // necessary to + // - flip Y due to screen orientation + // - flip Z due to Z-Buffer orientation from back to front + + aDeviceToView.scale(0.5, -0.5, -0.5); + aDeviceToView.translate(0.5, 0.5, 0.5); + } + + { + // step two: + // + // bring from [0.0 .. 1.0] in X,Y and Z to view cordinates + // + // #i102611# + // also: scale Z to [1.5 .. 65534.5]. Normally, a range of [0.0 .. 65535.0] + // could be used, but a 'unused' value is needed, so '0' is used what reduces + // the range to [1.0 .. 65535.0]. It has also shown that small numerical errors + // (smaller as basegfx::fTools::mfSmallValue, which is 0.000000001) happen. + // Instead of checking those by basegfx::fTools methods which would cost + // runtime, just add another 0.5 tolerance to the start and end of the Z-Buffer + // range, thus resulting in [1.5 .. 65534.5] + const double fMaxZDepth(65533.0); + aDeviceToView.translate(-rVisiblePart.getMinX(), -rVisiblePart.getMinY(), 0.0); + + if(mnAntiAlialize) + aDeviceToView.scale(fFullViewSizeX * mnAntiAlialize, fFullViewSizeY * mnAntiAlialize, fMaxZDepth); + else + aDeviceToView.scale(fFullViewSizeX, fFullViewSizeY, fMaxZDepth); + + aDeviceToView.translate(0.0, 0.0, 1.5); + } + + // update local ViewInformation3D with own DeviceToView + const geometry::ViewInformation3D aNewViewInformation3D( + getViewInformation3D().getObjectTransformation(), + getViewInformation3D().getOrientation(), + getViewInformation3D().getProjection(), + aDeviceToView, + getViewInformation3D().getViewTime(), + getViewInformation3D().getExtendedInformationSequence()); + updateViewInformation(aNewViewInformation3D); + + // prepare inverse EyeToView transformation. This can be done in constructor + // since changes in object transformations when processing TransformPrimitive3Ds + // do not influence this prepared partial transformation + maInvEyeToView = getViewInformation3D().getDeviceToView() * getViewInformation3D().getProjection(); + maInvEyeToView.invert(); + + // prepare maRasterRange + maRasterRange.reset(); + maRasterRange.expand(basegfx::B2DPoint(0.0, 0.0)); + maRasterRange.expand(basegfx::B2DPoint(mpBZPixelRaster->getWidth(), mpBZPixelRaster->getHeight())); + + // create the raster converter + mpZBufferRasterConverter3D = new ZBufferRasterConverter3D(*mpBZPixelRaster, *this); + } + } + + ZBufferProcessor3D::~ZBufferProcessor3D() + { + if(mpBZPixelRaster) + { + delete mpZBufferRasterConverter3D; + delete mpBZPixelRaster; + } + } + + BitmapEx ZBufferProcessor3D::getBitmapEx() const + { + if(mpBZPixelRaster) + { + return BPixelRasterToBitmapEx(*mpBZPixelRaster, mnAntiAlialize); + } + + return BitmapEx(); + } + } // end of namespace processor3d +} // end of namespace drawinglayer + +////////////////////////////////////////////////////////////////////////////// +// eof |