drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx

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  28
  29 #include <drawinglayer/primitive3d/hatchtextureprimitive3d.hxx>
  30 #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
  31 #include <basegfx/polygon/b2dpolypolygon.hxx>
  32 #include <basegfx/polygon/b3dpolygon.hxx>
  33 #include <basegfx/polygon/b2dpolygon.hxx>
  34 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  35 #include <basegfx/range/b2drange.hxx>
  36 #include <drawinglayer/texture/texture.hxx>
  37 #include <basegfx/polygon/b2dpolygonclipper.hxx>
  38 #include <basegfx/matrix/b3dhommatrix.hxx>
  39 #include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
  40 #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
  41
  42 //////////////////////////////////////////////////////////////////////////////
  43
  44 using namespace com::sun::star;
  45
  46 //////////////////////////////////////////////////////////////////////////////
  47
  48 namespace drawinglayer
  49 {
  50     namespace primitive3d
  51     {
  52         Primitive3DSequence HatchTexturePrimitive3D::impCreate3DDecomposition() const
  53         {
  54             Primitive3DSequence aRetval;
  55
  56             if(getChildren().hasElements())
  57             {
  58                 const Primitive3DSequence aSource(getChildren());
  59                 const sal_uInt32 nSourceCount(aSource.getLength());
  60                 std::vector< Primitive3DReference > aDestination;
  61
  62                 for(sal_uInt32 a(0); a < nSourceCount; a++)
  63                 {
  64                     // get reference
  65                     const Primitive3DReference xReference(aSource[a]);
  66
  67                     if(xReference.is())
  68                     {
  69                         // try to cast to BasePrimitive2D implementation
  70                         const BasePrimitive3D* pBasePrimitive = dynamic_cast< const BasePrimitive3D* >(xReference.get());
  71
  72                         if(pBasePrimitive)
  73                         {
  74                             // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
  75                             // not all content is needed, remove transparencies and ModifiedColorPrimitives
  76                             switch(pBasePrimitive->getPrimitive3DID())
  77                             {
  78                                 case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
  79                                 {
  80                                     // polyPolygonMaterialPrimitive3D, check texturing and hatching
  81                                     const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
  82                                     const basegfx::B3DPolyPolygon aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());
  83
  84                                     if(maHatch.isFillBackground())
  85                                     {
  86                                         // add original primitive for background
  87                                         aDestination.push_back(xReference);
  88                                     }
  89
  90                                     if(aFillPolyPolygon.areTextureCoordinatesUsed())
  91                                     {
  92                                         const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
  93                                         basegfx::B2DPolyPolygon aTexPolyPolygon;
  94                                         basegfx::B2DPoint a2N;
  95                                         basegfx::B2DVector a2X, a2Y;
  96                                         basegfx::B3DPoint a3N;
  97                                         basegfx::B3DVector a3X, a3Y;
  98                                         bool b2N(false), b2X(false), b2Y(false);
  99
 100                                         for(sal_uInt32 b(0); b < nPolyCount; b++)
 101                                         {
 102                                             const basegfx::B3DPolygon aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
 103                                             const sal_uInt32 nPointCount(aPartPoly.count());
 104                                             basegfx::B2DPolygon aTexPolygon;
 105
 106                                             for(sal_uInt32 c(0); c < nPointCount; c++)
 107                                             {
 108                                                 const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));
 109
 110                                                 if(!b2N)
 111                                                 {
 112                                                     a2N = a2Candidate;
 113                                                     a3N = aPartPoly.getB3DPoint(c);
 114                                                     b2N = true;
 115                                                 }
 116                                                 else if(!b2X && !a2N.equal(a2Candidate))
 117                                                 {
 118                                                     a2X = a2Candidate - a2N;
 119                                                     a3X = aPartPoly.getB3DPoint(c) - a3N;
 120                                                     b2X = true;
 121                                                 }
 122                                                 else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
 123                                                 {
 124                                                     a2Y = a2Candidate - a2N;
 125
 126                                                     const double fCross(a2X.cross(a2Y));
 127
 128                                                     if(!basegfx::fTools::equalZero(fCross))
 129                                                     {
 130                                                         a3Y = aPartPoly.getB3DPoint(c) - a3N;
 131                                                         b2Y = true;
 132                                                     }
 133                                                 }
 134
 135                                                 aTexPolygon.append(a2Candidate);
 136                                             }
 137
 138                                             aTexPolygon.setClosed(true);
 139                                             aTexPolyPolygon.append(aTexPolygon);
 140                                         }
 141
 142                                         if(b2N && b2X && b2Y)
 143                                         {
 144                                             // found two linearly independent 2D vectors
 145                                             // get 2d range of texture coordinates
 146                                             const basegfx::B2DRange aOutlineRange(basegfx::tools::getRange(aTexPolyPolygon));
 147                                             const basegfx::BColor aHatchColor(getHatch().getColor());
 148                                             const double fAngle(getHatch().getAngle());
 149                                             ::std::vector< basegfx::B2DHomMatrix > aMatrices;
 150
 151                                             // get hatch transformations
 152                                             switch(getHatch().getStyle())
 153                                             {
 154                                                 case attribute::HATCHSTYLE_TRIPLE:
 155                                                 {
 156                                                     // rotated 45 degrees
 157                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI4);
 158                                                     aHatch.appendTransformations(aMatrices);
 159                                                 }
 160                                                 case attribute::HATCHSTYLE_DOUBLE:
 161                                                 {
 162                                                     // rotated 90 degrees
 163                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle - F_PI2);
 164                                                     aHatch.appendTransformations(aMatrices);
 165                                                 }
 166                                                 case attribute::HATCHSTYLE_SINGLE:
 167                                                 {
 168                                                     // angle as given
 169                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle);
 170                                                     aHatch.appendTransformations(aMatrices);
 171                                                 }
 172                                             }
 173
 174                                             // create geometry from unit line
 175                                             basegfx::B2DPolyPolygon a2DHatchLines;
 176                                             basegfx::B2DPolygon a2DUnitLine;
 177                                             a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
 178                                             a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));
 179
 180                                             for(sal_uInt32 c(0); c < aMatrices.size(); c++)
 181                                             {
 182                                                 const basegfx::B2DHomMatrix& rMatrix = aMatrices[c];
 183                                                 basegfx::B2DPolygon aNewLine(a2DUnitLine);
 184                                                 aNewLine.transform(rMatrix);
 185                                                 a2DHatchLines.append(aNewLine);
 186                                             }
 187
 188                                             if(a2DHatchLines.count())
 189                                             {
 190                                                 // clip against texture polygon
 191                                                 a2DHatchLines = basegfx::tools::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
 192                                             }
 193
 194                                             if(a2DHatchLines.count())
 195                                             {
 196                                                 // create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
 197                                                 // a coordinate system transformation from unit coordinates to the new coordinate system
 198                                                 basegfx::B2DHomMatrix a2D;
 199                                                 a2D.set(0, 0, a2X.getX());
 200                                                 a2D.set(1, 0, a2X.getY());
 201                                                 a2D.set(0, 1, a2Y.getX());
 202                                                 a2D.set(1, 1, a2Y.getY());
 203                                                 a2D.set(0, 2, a2N.getX());
 204                                                 a2D.set(1, 2, a2N.getY());
 205
 206                                                 // invert that transformation, so we have a back-transformation from texture coordinates
 207                                                 // to unit coordinates
 208                                                 a2D.invert();
 209                                                 a2DHatchLines.transform(a2D);
 210
 211                                                 // expand back-transformated geometry tpo 3D
 212                                                 basegfx::B3DPolyPolygon a3DHatchLines(basegfx::tools::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));
 213
 214                                                 // create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
 215                                                 // a coordinate system transformation from unit coordinates to the object's 3d coordinate system
 216                                                 basegfx::B3DHomMatrix a3D;
 217                                                 a3D.set(0, 0, a3X.getX());
 218                                                 a3D.set(1, 0, a3X.getY());
 219                                                 a3D.set(2, 0, a3X.getZ());
 220                                                 a3D.set(0, 1, a3Y.getX());
 221                                                 a3D.set(1, 1, a3Y.getY());
 222                                                 a3D.set(2, 1, a3Y.getZ());
 223                                                 a3D.set(0, 3, a3N.getX());
 224                                                 a3D.set(1, 3, a3N.getY());
 225                                                 a3D.set(2, 3, a3N.getZ());
 226
 227                                                 // transform hatch lines to 3D object coordinates
 228                                                 a3DHatchLines.transform(a3D);
 229
 230                                                 // build primitives from this geometry
 231                                                 const sal_uInt32 nHatchLines(a3DHatchLines.count());
 232
 233                                                 for(sal_uInt32 d(0); d < nHatchLines; d++)
 234                                                 {
 235                                                     const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
 236                                                     aDestination.push_back(xRef);
 237                                                 }
 238                                             }
 239                                         }
 240                                     }
 241
 242                                     break;
 243                                 }
 244                                 default :
 245                                 {
 246                                     // add reference to result
 247                                     aDestination.push_back(xReference);
 248                                     break;
 249                                 }
 250                             }
 251                         }
 252                         else
 253                         {
 254                             // unknown implementation, add to result
 255                             aDestination.push_back(xReference);
 256                         }
 257                     }
 258                 }
 259
 260                 // prepare return value
 261                 const sal_uInt32 nDestSize(aDestination.size());
 262                 aRetval.realloc(nDestSize);
 263
 264                 for(sal_uInt32 b(0); b < nDestSize; b++)
 265                 {
 266                     aRetval[b] = aDestination[b];
 267                 }
 268             }
 269
 270             return aRetval;
 271         }
 272
 273         HatchTexturePrimitive3D::HatchTexturePrimitive3D(
 274             const attribute::FillHatchAttribute& rHatch,
 275             const Primitive3DSequence& rChildren,
 276             const basegfx::B2DVector& rTextureSize,
 277             bool bModulate,
 278             bool bFilter)
 279         :   TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
 280             maHatch(rHatch),
 281             maBuffered3DDecomposition()
 282         {
 283         }
 284
 285         bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
 286         {
 287             if(TexturePrimitive3D::operator==(rPrimitive))
 288             {
 289                 const HatchTexturePrimitive3D& rCompare = (HatchTexturePrimitive3D&)rPrimitive;
 290
 291                 return (getHatch() == rCompare.getHatch());
 292             }
 293
 294             return false;
 295         }
 296
 297         Primitive3DSequence HatchTexturePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
 298         {
 299             ::osl::MutexGuard aGuard( m_aMutex );
 300
 301             if(!getBuffered3DDecomposition().hasElements())
 302             {
 303                 const Primitive3DSequence aNewSequence(impCreate3DDecomposition());
 304                 const_cast< HatchTexturePrimitive3D* >(this)->setBuffered3DDecomposition(aNewSequence);
 305             }
 306
 307             return getBuffered3DDecomposition();
 308         }
 309
 310         // provide unique ID
 311         ImplPrimitrive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)
 312
 313     } // end of namespace primitive3d
 314 } // end of namespace drawinglayer
 315
 316 //////////////////////////////////////////////////////////////////////////////
 317 // eof
 318
 319 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */