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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: shadow3dextractor.cxx,v $
*
* $Revision: 1.1 $
*
* last change: $Author: aw $ $Date: 2006-08-09 16:57:48 $
*
* 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 _DRAWINGLAYER_PROCESSOR3D_SHADOW3DEXTRACTOR_HXX
#include <drawinglayer/processor3d/shadow3dextractor.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE3D_SHADOWPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/shadowprimitive3d.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE_SHADOWPRIMITIVE_HXX
#include <drawinglayer/primitive/shadowprimitive.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE3D_TRANSFORMPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE3D_POLYGONPRIMITIVE3D_HXX
#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
#endif
#ifndef _BGFX_POLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolygontools.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE3D_POLYPOLYGONPRIMITIVE_HXX
#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
#endif
#ifndef _BGFX_POLYPOLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#endif
#ifndef _DRAWINGLAYER_GEOMETRY_TRANSFORMATION3D_HXX
#include <drawinglayer/geometry/transformation3d.hxx>
#endif
#ifndef _DRAWINGLAYER_ATTRIBUTE_SDRATTRIBUTE3D_HXX
#include <drawinglayer/attribute/sdrattribute3d.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE_SIMPLETRANSPARENCEPRIMITIVE_HXX
#include <drawinglayer/primitive/simpletransparenceprimitive.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE_POLYGONPRIMITIVE_HXX
#include <drawinglayer/primitive/polygonprimitive.hxx>
#endif
#ifndef _DRAWINGLAYER_PRIMITIVE_POLYPOLYGONPRIMITIVE_HXX
#include <drawinglayer/primitive/polypolygonprimitive.hxx>
#endif
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace processor3d
{
shadow3DExtractingProcessor::shadow3DExtractingProcessor(
const geometry::viewInformation& rViewInformation,
const geometry::transformation3D& rTransformation3D,
const attribute::sdrLightingAttribute& rSdrLightingAttribute,
const primitive3d::primitiveVector3D& rPrimitiveVector,
double fShadowSlant)
: baseProcessor3D(rViewInformation, rTransformation3D),
mpTargetVector(&maPrimitiveVector),
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);
// create complete 3d transformation set for shadow stuff
maWorldToEye = getTransformation3D().getOrientation() * getTransformation3D().getTransformation();
maEyeToView = getTransformation3D().getDeviceToView() * getTransformation3D().getProjection();
maWorldToView = maEyeToView * maWorldToEye;
// 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);
if(basegfx::fTools::more(mfLightPlaneScalar, 0.0))
{
// use only when scalar is > 0.0, so the light is in front of the object
basegfx::B3DRange aContained3DRange(get3DRangeFromVector(rPrimitiveVector));
aContained3DRange.transform(maWorldToEye);
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;
}
}
}
shadow3DExtractingProcessor::~shadow3DExtractingProcessor()
{
}
void shadow3DExtractingProcessor::process(const primitive3d::primitiveVector3D& rSource)
{
for(sal_uInt32 a(0L); a < rSource.size(); a++)
{
// get reference
const primitive3d::referencedPrimitive3D& rCandidate = rSource[a];
switch(rCandidate.getID())
{
case CreatePrimitiveID('S', 'H', 'D', '3'):
{
// shadow3d object. Call recursive with content and start conversion
const primitive3d::shadowPrimitive3D& rPrimitive = static_cast< const primitive3d::shadowPrimitive3D& >(rCandidate.getBasePrimitive());
// set new target
primitive::primitiveVector aNewSubList;
primitive::primitiveVector* pLastTargetVector = mpTargetVector;
mpTargetVector = &aNewSubList;
// activate convert
const bool bLastConvert(mbConvert);
mbConvert = true;
// set projection flag
const bool bLastUseProjection(mbUseProjection);
mbUseProjection = rPrimitive.getShadow3D();
// process content
process(rPrimitive.getPrimitives());
// restore values
mbUseProjection = bLastUseProjection;
mbConvert = bLastConvert;
mpTargetVector = pLastTargetVector;
// create 2d shadow primitive with result
primitive::shadowPrimitive* pNew = new primitive::shadowPrimitive(rPrimitive.getShadowTransform(), rPrimitive.getShadowColor(), aNewSubList);
if(basegfx::fTools::more(rPrimitive.getShadowTransparence(), 0.0))
{
// create simpleTransparencePrimitive, add created primitives
primitive::primitiveVector aNewTransPrimitiveVector;
aNewTransPrimitiveVector.push_back(primitive::referencedPrimitive(*pNew));
primitive::simpleTransparencePrimitive* pNewTrans = new primitive::simpleTransparencePrimitive(rPrimitive.getShadowTransparence(), aNewTransPrimitiveVector);
mpTargetVector->push_back(primitive::referencedPrimitive(*pNewTrans));
}
else
{
// add directly
mpTargetVector->push_back(primitive::referencedPrimitive(*pNew));
}
break;
}
case CreatePrimitiveID('T', 'R', 'N', '3'):
{
// transform group. Remember current transformations
const primitive3d::transformPrimitive3D& rPrimitive = static_cast< const primitive3d::transformPrimitive3D& >(rCandidate.getBasePrimitive());
basegfx::B3DHomMatrix aLastWorldToView(maWorldToView);
basegfx::B3DHomMatrix aLastWorldToEye(maWorldToEye);
// create new transformations
maWorldToView = maWorldToView * rPrimitive.getTransformation();
maWorldToEye = maWorldToEye * rPrimitive.getTransformation();
// let break down
process(rPrimitive.getPrimitives());
// restore transformations
maWorldToView = aLastWorldToView;
maWorldToEye = aLastWorldToEye;
break;
}
case CreatePrimitiveID('P', 'O', 'H', '3'):
{
// polygonHairlinePrimitive3D
if(mbConvert)
{
const primitive3d::polygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::polygonHairlinePrimitive3D& >(rCandidate.getBasePrimitive());
basegfx::B2DPolygon a2DHairline;
if(mbUseProjection)
{
if(mbShadowProjectionIsValid)
{
a2DHairline = impDoShadowProjection(rPrimitive.getB3DPolygon());
}
}
else
{
a2DHairline = basegfx::tools::createB2DPolygonFromB3DPolygon(rPrimitive.getB3DPolygon(), maWorldToView);
}
if(a2DHairline.count())
{
a2DHairline.transform(getTransformation3D().getObjectTransformation());
primitive::polygonHairlinePrimitive* pNew = new primitive::polygonHairlinePrimitive(a2DHairline, maPrimitiveColor);
mpTargetVector->push_back(primitive::referencedPrimitive(*pNew));
}
}
break;
}
case CreatePrimitiveID('P', 'O', 'M', '3'):
{
// polyPolygonMaterialPrimitive3D
if(mbConvert)
{
const primitive3d::polyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::polyPolygonMaterialPrimitive3D& >(rCandidate.getBasePrimitive());
basegfx::B2DPolyPolygon a2DFill;
if(mbUseProjection)
{
if(mbShadowProjectionIsValid)
{
a2DFill = impDoShadowProjection(rPrimitive.getB3DPolyPolygon());
}
}
else
{
a2DFill = basegfx::tools::createB2DPolyPolygonFromB3DPolyPolygon(rPrimitive.getB3DPolyPolygon(), maWorldToView);
}
if(a2DFill.count())
{
a2DFill.transform(getTransformation3D().getObjectTransformation());
primitive::polyPolygonColorPrimitive* pNew = new primitive::polyPolygonColorPrimitive(a2DFill, maPrimitiveColor);
mpTargetVector->push_back(primitive::referencedPrimitive(*pNew));
}
}
break;
}
case CreatePrimitiveID('L', 'A', 'B', '3'):
{
// has no 3d shadow, accept and ignore
break;
}
default:
{
// let break down
process(rCandidate.getBasePrimitive().getDecomposition());
break;
}
}
}
}
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 *= maWorldToEye;
// 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 *= maEyeToView;
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
|
