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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: shadow3dextractor.cxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: aw $ $Date: 2007-03-06 12:35:55 $
*
* 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
*
************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_PROCESSOR3D_SHADOW3DEXTRACTOR_HXX
#include <drawinglayer/processor3d/shadow3dextractor.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_SHADOWPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/shadowprimitive3d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_SHADOWPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/shadowprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_UNIFIEDALPHAPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/unifiedalphaprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_TRANSFORMPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_POLYGONPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
#endif
#ifndef _BGFX_POLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolygontools.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_POLYGONPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_POLYPOLYGONPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
#endif
#ifndef _BGFX_POLYPOLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_POLYPOLYGONPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_SDRLABELPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/sdrlabelprimitive3d.hxx>
#endif
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE3D_PRIMITIVETYPES3D_HXX
#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
#endif
//////////////////////////////////////////////////////////////////////////////
using namespace com::sun::star;
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace processor3d
{
Shadow3DExtractingProcessor::Shadow3DExtractingProcessor(
double fTime,
const basegfx::B2DHomMatrix& rObjectTransformation,
const basegfx::B3DHomMatrix& rWorldToEye,
const basegfx::B3DHomMatrix& rEyeToView,
const attribute::SdrLightingAttribute& rSdrLightingAttribute,
const primitive3d::Primitive3DSequence& rPrimitiveSequence,
double fShadowSlant)
: BaseProcessor3D(fTime),
maPrimitive2DSequence(),
mpPrimitive2DSequence(&maPrimitive2DSequence),
maObjectTransformation(rObjectTransformation),
maWorldToEye(rWorldToEye),
maEyeToView(rEyeToView),
maWorldToView(maEyeToView * maWorldToEye),
maLightNormal(),
maShadowPlaneNormal(),
maPlanePoint(),
mfLightPlaneScalar(0.0),
maPrimitiveColor(),
mbShadowProjectionIsValid(false),
mbConvert(false),
mbUseProjection(false)
{
// create deviceToView projection for shadow geometry
// outcome is [-1.0 .. 1.0] in X,Y and Z. bring to [0.0 .. 1.0]. Also
// necessary to flip Y due to screen orientation
// Z is not needed, but will also be brought to [0.0 .. 1.0]
basegfx::B3DHomMatrix aDeviceToView;
aDeviceToView.scale(0.5, -0.5, 0.5);
aDeviceToView.translate(0.5, 0.5, 0.5);
// calculate shadow projection stuff
if(rSdrLightingAttribute.getLightVector().size())
{
// get light normal, plane normal and sclalar from it
maLightNormal = rSdrLightingAttribute.getLightVector()[0L].getDirection();
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))
{
basegfx::B3DRange aContained3DRange(primitive3d::getB3DRangeFromPrimitive3DSequence(rPrimitiveSequence, getTime()));
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;
}
}
}
void Shadow3DExtractingProcessor::process(const primitive3d::Primitive3DSequence& rSource)
{
if(rSource.hasElements())
{
const sal_Int32 nCount(rSource.getLength());
for(sal_Int32 a(0L); a < nCount; a++)
{
// get reference
const primitive3d::Primitive3DReference xReference(rSource[a]);
if(xReference.is())
{
// try to cast to BasePrimitive3D implementation
const primitive3d::BasePrimitive3D* pBasePrimitive = dynamic_cast< const primitive3d::BasePrimitive3D* >(xReference.get());
if(pBasePrimitive)
{
// it is a BasePrimitive3D implementation, use getPrimitiveID() call for switch
switch(pBasePrimitive->getPrimitiveID())
{
case PRIMITIVE3D_ID_SHADOWPRIMITIVE3D :
{
// shadow3d object. Call recursive with content and start conversion
const primitive3d::ShadowPrimitive3D& rPrimitive = static_cast< const primitive3d::ShadowPrimitive3D& >(*pBasePrimitive);
// 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& >(*pBasePrimitive);
basegfx::B3DHomMatrix aLastWorldToView(getWorldToView());
basegfx::B3DHomMatrix aLastWorldToEye(getWorldToEye());
// create new transformations
maWorldToView = getWorldToView() * rPrimitive.getTransformation();
maWorldToEye = getWorldToEye() * rPrimitive.getTransformation();
// let break down
process(rPrimitive.getChildren());
// restore transformations
maWorldToView = aLastWorldToView;
maWorldToEye = aLastWorldToEye;
break;
}
case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
{
// PolygonHairlinePrimitive3D
if(mbConvert)
{
const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(*pBasePrimitive);
basegfx::B2DPolygon a2DHairline;
if(mbUseProjection)
{
if(mbShadowProjectionIsValid)
{
a2DHairline = impDoShadowProjection(rPrimitive.getB3DPolygon());
}
}
else
{
a2DHairline = basegfx::tools::createB2DPolygonFromB3DPolygon(rPrimitive.getB3DPolygon(), getWorldToView());
}
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& >(*pBasePrimitive);
basegfx::B2DPolyPolygon a2DFill;
if(mbUseProjection)
{
if(mbShadowProjectionIsValid)
{
a2DFill = impDoShadowProjection(rPrimitive.getB3DPolyPolygon());
}
}
else
{
a2DFill = basegfx::tools::createB2DPolyPolygonFromB3DPolyPolygon(rPrimitive.getB3DPolyPolygon(), getWorldToView());
}
if(a2DFill.count())
{
a2DFill.transform(getObjectTransformation());
const primitive2d::Primitive2DReference xRef(new primitive2d::PolyPolygonColorPrimitive2D(a2DFill, maPrimitiveColor));
primitive2d::appendPrimitive2DReferenceToPrimitive2DSequence(*mpPrimitive2DSequence, xRef);
}
}
break;
}
case PRIMITIVE3D_ID_SDRLABELPRIMITIVE3D :
{
// SdrLabelPrimitive3D
// has no 3d shadow, accept and ignore
break;
}
default :
{
// process recursively
process(pBasePrimitive->get3DDecomposition(getTime()));
break;
}
}
}
else
{
// unknown implementation, use UNO API call instead and process recursively
com::sun::star::graphic::Primitive3DParameters aPrimitive3DParameters;
aPrimitive3DParameters.Time = getTime();
process(xReference->getDecomposition(aPrimitive3DParameters));
}
}
}
}
}
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
|
