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Diffstat (limited to 'drawinglayer/source/processor3d/shadow3dextractor.cxx')
| -rw-r--r-- | drawinglayer/source/processor3d/shadow3dextractor.cxx | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/drawinglayer/source/processor3d/shadow3dextractor.cxx b/drawinglayer/source/processor3d/shadow3dextractor.cxx new file mode 100644 index 000000000000..5e6678fc3a8e --- /dev/null +++ b/drawinglayer/source/processor3d/shadow3dextractor.cxx @@ -0,0 +1,306 @@ +/************************************************************************* + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: shadow3dextractor.cxx,v $ + * + * $Revision: 1.9 $ + * + * 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/shadow3dextractor.hxx> +#include <drawinglayer/primitive3d/shadowprimitive3d.hxx> +#include <drawinglayer/primitive2d/shadowprimitive2d.hxx> +#include <drawinglayer/primitive2d/unifiedalphaprimitive2d.hxx> +#include <drawinglayer/primitive3d/transformprimitive3d.hxx> +#include <drawinglayer/primitive3d/polygonprimitive3d.hxx> +#include <basegfx/polygon/b2dpolygontools.hxx> +#include <drawinglayer/primitive2d/polygonprimitive2d.hxx> +#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx> +#include <basegfx/polygon/b2dpolypolygontools.hxx> +#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx> +#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx> + +////////////////////////////////////////////////////////////////////////////// + +using namespace com::sun::star; + +////////////////////////////////////////////////////////////////////////////// + +namespace drawinglayer +{ + namespace processor3d + { + // as tooling, the process() implementation takes over API handling and calls this + // virtual render method when the primitive implementation is BasePrimitive3D-based. + void Shadow3DExtractingProcessor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate) + { + // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch + switch(rCandidate.getPrimitive3DID()) + { + case PRIMITIVE3D_ID_SHADOWPRIMITIVE3D : + { + // shadow3d object. Call recursive with content and start conversion + const primitive3d::ShadowPrimitive3D& rPrimitive = static_cast< const primitive3d::ShadowPrimitive3D& >(rCandidate); + + // set new target + primitive2d::Primitive2DSequence aNewSubList; + primitive2d::Primitive2DSequence* pLastTargetSequence = mpPrimitive2DSequence; + mpPrimitive2DSequence = &aNewSubList; + + // activate convert + const bool bLastConvert(mbConvert); + mbConvert = true; + + // set projection flag + const bool bLastUseProjection(mbUseProjection); + mbUseProjection = rPrimitive.getShadow3D(); + + // process content + process(rPrimitive.getChildren()); + + // restore values + mbUseProjection = bLastUseProjection; + mbConvert = bLastConvert; + mpPrimitive2DSequence = pLastTargetSequence; + + // create 2d shadow primitive with result + const primitive2d::Primitive2DReference xRef(new primitive2d::ShadowPrimitive2D(rPrimitive.getShadowTransform(), rPrimitive.getShadowColor(), aNewSubList)); + + if(basegfx::fTools::more(rPrimitive.getShadowTransparence(), 0.0)) + { + // create simpleTransparencePrimitive, add created primitives + const primitive2d::Primitive2DSequence aNewTransPrimitiveVector(&xRef, 1L); + const primitive2d::Primitive2DReference xRef2(new primitive2d::UnifiedAlphaPrimitive2D(aNewTransPrimitiveVector, rPrimitive.getShadowTransparence())); + primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(*mpPrimitive2DSequence, xRef2); + } + else + { + // add directly + primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(*mpPrimitive2DSequence, xRef); + } + break; + } + case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D : + { + // transform group. Remember current transformations + const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate); + const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D()); + + // create new transformation; add new object transform from right side + const geometry::ViewInformation3D aNewViewInformation3D( + aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(), + aLastViewInformation3D.getOrientation(), + aLastViewInformation3D.getProjection(), + aLastViewInformation3D.getDeviceToView(), + aLastViewInformation3D.getViewTime(), + aLastViewInformation3D.getExtendedInformationSequence()); + updateViewInformation(aNewViewInformation3D); + + if(mbShadowProjectionIsValid) + { + // update buffered WorldToEye and EyeToView + maWorldToEye = getViewInformation3D().getOrientation() * getViewInformation3D().getObjectTransformation(); + maEyeToView = getViewInformation3D().getDeviceToView() * getViewInformation3D().getProjection(); + } + + // let break down + process(rPrimitive.getChildren()); + + // restore transformations + updateViewInformation(aLastViewInformation3D); + + if(mbShadowProjectionIsValid) + { + // update buffered WorldToEye and EyeToView + maWorldToEye = getViewInformation3D().getOrientation() * getViewInformation3D().getObjectTransformation(); + maEyeToView = getViewInformation3D().getDeviceToView() * getViewInformation3D().getProjection(); + } + break; + } + case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D : + { + // PolygonHairlinePrimitive3D + if(mbConvert) + { + const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rCandidate); + basegfx::B2DPolygon a2DHairline; + + if(mbUseProjection) + { + if(mbShadowProjectionIsValid) + { + a2DHairline = impDoShadowProjection(rPrimitive.getB3DPolygon()); + } + } + else + { + a2DHairline = basegfx::tools::createB2DPolygonFromB3DPolygon(rPrimitive.getB3DPolygon(), getViewInformation3D().getObjectToView()); + } + + if(a2DHairline.count()) + { + a2DHairline.transform(getObjectTransformation()); + const primitive2d::Primitive2DReference xRef(new primitive2d::PolygonHairlinePrimitive2D(a2DHairline, maPrimitiveColor)); + primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(*mpPrimitive2DSequence, xRef); + } + } + break; + } + case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D : + { + // PolyPolygonMaterialPrimitive3D + if(mbConvert) + { + const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate); + basegfx::B2DPolyPolygon a2DFill; + + if(mbUseProjection) + { + if(mbShadowProjectionIsValid) + { + a2DFill = impDoShadowProjection(rPrimitive.getB3DPolyPolygon()); + } + } + else + { + a2DFill = basegfx::tools::createB2DPolyPolygonFromB3DPolyPolygon(rPrimitive.getB3DPolyPolygon(), getViewInformation3D().getObjectToView()); + } + + if(a2DFill.count()) + { + a2DFill.transform(getObjectTransformation()); + const primitive2d::Primitive2DReference xRef(new primitive2d::PolyPolygonColorPrimitive2D(a2DFill, maPrimitiveColor)); + primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(*mpPrimitive2DSequence, xRef); + } + } + break; + } + default : + { + // process recursively + process(rCandidate.get3DDecomposition(getViewInformation3D())); + break; + } + } + } + + Shadow3DExtractingProcessor::Shadow3DExtractingProcessor( + const geometry::ViewInformation3D& rViewInformation, + const basegfx::B2DHomMatrix& rObjectTransformation, + const basegfx::B3DVector& rLightNormal, + double fShadowSlant, + const basegfx::B3DRange& rContained3DRange) + : BaseProcessor3D(rViewInformation), + maPrimitive2DSequence(), + mpPrimitive2DSequence(&maPrimitive2DSequence), + maObjectTransformation(rObjectTransformation), + maWorldToEye(), + maEyeToView(), + maLightNormal(rLightNormal), + maShadowPlaneNormal(), + maPlanePoint(), + mfLightPlaneScalar(0.0), + maPrimitiveColor(), + mbShadowProjectionIsValid(false), + mbConvert(false), + mbUseProjection(false) + { + // normalize light normal, get and normalize shadow plane normal and calculate scalar from it + maLightNormal.normalize(); + maShadowPlaneNormal = basegfx::B3DVector(0.0, sin(fShadowSlant), cos(fShadowSlant)); + maShadowPlaneNormal.normalize(); + mfLightPlaneScalar = maLightNormal.scalar(maShadowPlaneNormal); + + // use only when scalar is > 0.0, so the light is in front of the object + if(basegfx::fTools::more(mfLightPlaneScalar, 0.0)) + { + // prepare buffered WorldToEye and EyeToView + maWorldToEye = getViewInformation3D().getOrientation() * getViewInformation3D().getObjectTransformation(); + maEyeToView = getViewInformation3D().getDeviceToView() * getViewInformation3D().getProjection(); + + // calculate range to get front edge around which to rotate the shadow's projection + basegfx::B3DRange aContained3DRange(rContained3DRange); + aContained3DRange.transform(getWorldToEye()); + maPlanePoint.setX(maShadowPlaneNormal.getX() < 0.0 ? aContained3DRange.getMinX() : aContained3DRange.getMaxX()); + maPlanePoint.setY(maShadowPlaneNormal.getY() > 0.0 ? aContained3DRange.getMinY() : aContained3DRange.getMaxY()); + maPlanePoint.setZ(aContained3DRange.getMinZ() - (aContained3DRange.getDepth() / 8.0)); + + // set flag that shadow projection is prepared and allowed + mbShadowProjectionIsValid = true; + } + } + + basegfx::B2DPolygon Shadow3DExtractingProcessor::impDoShadowProjection(const basegfx::B3DPolygon& rSource) + { + basegfx::B2DPolygon aRetval; + + for(sal_uInt32 a(0L); a < rSource.count(); a++) + { + // get point, transform to eye coordinate system + basegfx::B3DPoint aCandidate(rSource.getB3DPoint(a)); + aCandidate *= getWorldToEye(); + + // we are in eye coordinates + // ray is (aCandidate + fCut * maLightNormal) + // plane is (maPlanePoint, maShadowPlaneNormal) + // maLightNormal.scalar(maShadowPlaneNormal) is already in mfLightPlaneScalar and > 0.0 + // get cut point of ray with shadow plane + const double fCut(basegfx::B3DVector(maPlanePoint - aCandidate).scalar(maShadowPlaneNormal) / mfLightPlaneScalar); + aCandidate += maLightNormal * fCut; + + // transform to view, use 2d coordinates + aCandidate *= getEyeToView(); + aRetval.append(basegfx::B2DPoint(aCandidate.getX(), aCandidate.getY())); + } + + // copy closed flag + aRetval.setClosed(rSource.isClosed()); + + return aRetval; + } + + basegfx::B2DPolyPolygon Shadow3DExtractingProcessor::impDoShadowProjection(const basegfx::B3DPolyPolygon& rSource) + { + basegfx::B2DPolyPolygon aRetval; + + for(sal_uInt32 a(0L); a < rSource.count(); a++) + { + aRetval.append(impDoShadowProjection(rSource.getB3DPolygon(a))); + } + + return aRetval; + } + } // end of namespace processor3d +} // end of namespace drawinglayer + +////////////////////////////////////////////////////////////////////////////// +// eof |