drawinglayer/source/primitive2d/embedded3dprimitive2d.cxx

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   5  *  $RCSfile: embedded3dprimitive2d.cxx,v $
   6  *
   7  *  $Revision: 1.8 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-06-24 15:31:08 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
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  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
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  24  *    This library is distributed in the hope that it will be useful,
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  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
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  29  *    You should have received a copy of the GNU Lesser General Public
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  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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  34  ************************************************************************/
  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive2d/embedded3dprimitive2d.hxx>
  40 #include <basegfx/polygon/b2dpolygon.hxx>
  41 #include <basegfx/polygon/b2dpolygontools.hxx>
  42 #include <basegfx/color/bcolor.hxx>
  43 #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
  44 #include <basegfx/tools/canvastools.hxx>
  45 #include <drawinglayer/geometry/viewinformation2d.hxx>
  46 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  47 #include <drawinglayer/geometry/viewinformation3d.hxx>
  48 #include <drawinglayer/processor3d/shadow3dextractor.hxx>
  49
  50 //////////////////////////////////////////////////////////////////////////////
  51
  52 using namespace com::sun::star;
  53
  54 //////////////////////////////////////////////////////////////////////////////
  55
  56 namespace drawinglayer
  57 {
  58     namespace primitive2d
  59     {
  60         bool Embedded3DPrimitive2D::impGetShadow3D(const geometry::ViewInformation2D& /*rViewInformation*/) const
  61         {
  62             osl::MutexGuard aGuard( m_aMutex );
  63
  64             // create on demand
  65             if(!mbShadow3DChecked && getChildren3D().hasElements())
  66             {
  67                 // create shadow extraction processor
  68                 processor3d::Shadow3DExtractingProcessor aShadowProcessor(
  69                     getViewInformation3D(),
  70                     getObjectTransformation(),
  71                     getLightNormal(),
  72                     getShadowSlant(),
  73                     getScene3DRange());
  74
  75                 // process local primitives
  76                 aShadowProcessor.process(getChildren3D());
  77
  78                 // fetch result and set checked flag
  79                 const_cast< Embedded3DPrimitive2D* >(this)->maShadowPrimitives = aShadowProcessor.getPrimitive2DSequence();
  80                 const_cast< Embedded3DPrimitive2D* >(this)->mbShadow3DChecked = true;
  81             }
  82
  83             // return if there are shadow primitives
  84             return maShadowPrimitives.hasElements();
  85         }
  86
  87         Primitive2DSequence Embedded3DPrimitive2D::createLocalDecomposition(const geometry::ViewInformation2D& rViewInformation) const
  88         {
  89             // use info to create a yellow 2d rectangle, similar to empty 3d scenes and/or groups
  90             const basegfx::B2DRange aLocal2DRange(getB2DRange(rViewInformation));
  91             const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(aLocal2DRange));
  92             const basegfx::BColor aYellow(1.0, 1.0, 0.0);
  93             const Primitive2DReference xRef(new PolygonHairlinePrimitive2D(aOutline, aYellow));
  94
  95             return Primitive2DSequence(&xRef, 1L);
  96         }
  97
  98         Embedded3DPrimitive2D::Embedded3DPrimitive2D(
  99             const primitive3d::Primitive3DSequence& rxChildren3D,
 100             const basegfx::B2DHomMatrix& rObjectTransformation,
 101             const geometry::ViewInformation3D& rViewInformation3D,
 102             const basegfx::B3DVector& rLightNormal,
 103             double fShadowSlant,
 104             const basegfx::B3DRange& rScene3DRange)
 105         :       BasePrimitive2D(),
 106             mxChildren3D(rxChildren3D),
 107             maObjectTransformation(rObjectTransformation),
 108             maViewInformation3D(rViewInformation3D),
 109             maLightNormal(rLightNormal),
 110             mfShadowSlant(fShadowSlant),
 111             maScene3DRange(rScene3DRange),
 112             maShadowPrimitives(),
 113             maB2DRange(),
 114             mbShadow3DChecked(false)
 115         {
 116             maLightNormal.normalize();
 117         }
 118
 119         bool Embedded3DPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
 120         {
 121             if(BasePrimitive2D::operator==(rPrimitive))
 122             {
 123                 const Embedded3DPrimitive2D& rCompare = static_cast< const Embedded3DPrimitive2D& >(rPrimitive);
 124
 125                 return (primitive3d::arePrimitive3DSequencesEqual(getChildren3D(), rCompare.getChildren3D())
 126                     && getObjectTransformation() == rCompare.getObjectTransformation()
 127                     && getViewInformation3D() == rCompare.getViewInformation3D()
 128                     && getLightNormal() == rCompare.getLightNormal()
 129                     && getShadowSlant() == rCompare.getShadowSlant()
 130                     && getScene3DRange() == rCompare.getScene3DRange());
 131             }
 132
 133             return false;
 134         }
 135
 136         basegfx::B2DRange Embedded3DPrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
 137         {
 138             if(maB2DRange.isEmpty())
 139             {
 140                 // use the 3d transformation stack to create a projection of the 3D range
 141                 basegfx::B3DRange a3DRange(primitive3d::getB3DRangeFromPrimitive3DSequence(getChildren3D(), getViewInformation3D()));
 142                 a3DRange.transform(getViewInformation3D().getObjectToView());
 143
 144                 // create 2d range from projected 3d and transform with scene's object transformation
 145                 basegfx::B2DRange aNewRange;
 146                 aNewRange.expand(basegfx::B2DPoint(a3DRange.getMinX(), a3DRange.getMinY()));
 147                 aNewRange.expand(basegfx::B2DPoint(a3DRange.getMaxX(), a3DRange.getMaxY()));
 148                 aNewRange.transform(getObjectTransformation());
 149
 150                 // cehck for 3D shadows and their 2D projections. If those exist, they need to be
 151                 // taken into account
 152                 if(impGetShadow3D(rViewInformation))
 153                 {
 154                     const basegfx::B2DRange aShadow2DRange(getB2DRangeFromPrimitive2DSequence(maShadowPrimitives, rViewInformation));
 155
 156                     if(!aShadow2DRange.isEmpty())
 157                     {
 158                         aNewRange.expand(aShadow2DRange);
 159                     }
 160                 }
 161
 162                 // assign to buffered value
 163                 const_cast< Embedded3DPrimitive2D* >(this)->maB2DRange = aNewRange;
 164             }
 165
 166             return maB2DRange;
 167         }
 168
 169         // provide unique ID
 170         ImplPrimitrive2DIDBlock(Embedded3DPrimitive2D, PRIMITIVE2D_ID_EMBEDDED3DPRIMITIVE2D)
 171
 172     } // end of namespace primitive2d
 173 } // end of namespace drawinglayer
 174
 175 //////////////////////////////////////////////////////////////////////////////
 176 // eof