drawinglayer/source/primitive3d/hatchtextureprimitive3d.cxx

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   5  *  $RCSfile: hatchtextureprimitive3d.cxx,v $
   6  *
   7  *  $Revision: 1.11 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-06-10 09:29:33 $
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  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.
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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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  27  *    Lesser General Public License for more details.
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  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <drawinglayer/primitive3d/hatchtextureprimitive3d.hxx>
  40 #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
  41 #include <basegfx/polygon/b2dpolypolygon.hxx>
  42 #include <basegfx/polygon/b3dpolygon.hxx>
  43 #include <basegfx/polygon/b2dpolygon.hxx>
  44 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  45 #include <basegfx/range/b2drange.hxx>
  46 #include <drawinglayer/texture/texture.hxx>
  47 #include <basegfx/polygon/b2dpolygonclipper.hxx>
  48 #include <basegfx/matrix/b3dhommatrix.hxx>
  49 #include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
  50 #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
  51
  52 //////////////////////////////////////////////////////////////////////////////
  53
  54 using namespace com::sun::star;
  55
  56 //////////////////////////////////////////////////////////////////////////////
  57
  58 namespace drawinglayer
  59 {
  60     namespace primitive3d
  61     {
  62         Primitive3DSequence HatchTexturePrimitive3D::createLocalDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
  63         {
  64             Primitive3DSequence aRetval;
  65
  66             if(getChildren().hasElements())
  67             {
  68                 const Primitive3DSequence aSource(getChildren());
  69                 const sal_uInt32 nSourceCount(aSource.getLength());
  70                 std::vector< Primitive3DReference > aDestination;
  71
  72                 for(sal_uInt32 a(0); a < nSourceCount; a++)
  73                 {
  74                     // get reference
  75                     const Primitive3DReference xReference(aSource[a]);
  76
  77                     if(xReference.is())
  78                     {
  79                         // try to cast to BasePrimitive2D implementation
  80                         const BasePrimitive3D* pBasePrimitive = dynamic_cast< const BasePrimitive3D* >(xReference.get());
  81
  82                         if(pBasePrimitive)
  83                         {
  84                             // it is a BasePrimitive3D implementation, use getPrimitiveID() call for switch
  85                             // not all content is needed, remove transparencies and ModifiedColorPrimitives
  86                             switch(pBasePrimitive->getPrimitiveID())
  87                             {
  88                                 case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
  89                                 {
  90                                     // polyPolygonMaterialPrimitive3D, check texturing and hatching
  91                                     const PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const PolyPolygonMaterialPrimitive3D& >(*pBasePrimitive);
  92                                     const basegfx::B3DPolyPolygon aFillPolyPolygon(rPrimitive.getB3DPolyPolygon());
  93
  94                                     if(maHatch.isFillBackground())
  95                                     {
  96                                         // add original primitive for background
  97                                         aDestination.push_back(xReference);
  98                                     }
  99
 100                                     if(aFillPolyPolygon.areTextureCoordinatesUsed())
 101                                     {
 102                                         const sal_uInt32 nPolyCount(aFillPolyPolygon.count());
 103                                         basegfx::B2DPolyPolygon aTexPolyPolygon;
 104                                         basegfx::B2DPoint a2N;
 105                                         basegfx::B2DVector a2X, a2Y;
 106                                         basegfx::B3DPoint a3N;
 107                                         basegfx::B3DVector a3X, a3Y;
 108                                         bool b2N(false), b2X(false), b2Y(false);
 109
 110                                         for(sal_uInt32 b(0); b < nPolyCount; b++)
 111                                         {
 112                                             const basegfx::B3DPolygon aPartPoly(aFillPolyPolygon.getB3DPolygon(b));
 113                                             const sal_uInt32 nPointCount(aPartPoly.count());
 114                                             basegfx::B2DPolygon aTexPolygon;
 115
 116                                             for(sal_uInt32 c(0); c < nPointCount; c++)
 117                                             {
 118                                                 const basegfx::B2DPoint a2Candidate(aPartPoly.getTextureCoordinate(c));
 119
 120                                                 if(!b2N)
 121                                                 {
 122                                                     a2N = a2Candidate;
 123                                                     a3N = aPartPoly.getB3DPoint(c);
 124                                                     b2N = true;
 125                                                 }
 126                                                 else if(!b2X && !a2N.equal(a2Candidate))
 127                                                 {
 128                                                     a2X = a2Candidate - a2N;
 129                                                     a3X = aPartPoly.getB3DPoint(c) - a3N;
 130                                                     b2X = true;
 131                                                 }
 132                                                 else if(!b2Y && !a2N.equal(a2Candidate) && !a2X.equal(a2Candidate))
 133                                                 {
 134                                                     a2Y = a2Candidate - a2N;
 135
 136                                                     const double fCross(a2X.cross(a2Y));
 137
 138                                                     if(!basegfx::fTools::equalZero(fCross))
 139                                                     {
 140                                                         a3Y = aPartPoly.getB3DPoint(c) - a3N;
 141                                                         b2Y = true;
 142                                                     }
 143                                                 }
 144
 145                                                 aTexPolygon.append(a2Candidate);
 146                                             }
 147
 148                                             aTexPolygon.setClosed(true);
 149                                             aTexPolyPolygon.append(aTexPolygon);
 150                                         }
 151
 152                                         if(b2N && b2X && b2Y)
 153                                         {
 154                                             // found two linearly independent 2D vectors
 155                                             // get 2d range of texture coordinates
 156                                             const basegfx::B2DRange aOutlineRange(basegfx::tools::getRange(aTexPolyPolygon));
 157                                             const basegfx::BColor aHatchColor(getHatch().getColor());
 158                                             const double fAngle(-getHatch().getAngle());
 159                                             ::std::vector< basegfx::B2DHomMatrix > aMatrices;
 160
 161                                             // get hatch transformations
 162                                             switch(getHatch().getStyle())
 163                                             {
 164                                                 case attribute::HATCHSTYLE_TRIPLE:
 165                                                 {
 166                                                     // rotated 45 degrees
 167                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle + F_PI4);
 168                                                     aHatch.appendTransformations(aMatrices);
 169                                                 }
 170                                                 case attribute::HATCHSTYLE_DOUBLE:
 171                                                 {
 172                                                     // rotated 90 degrees
 173                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle + F_PI2);
 174                                                     aHatch.appendTransformations(aMatrices);
 175                                                 }
 176                                                 case attribute::HATCHSTYLE_SINGLE:
 177                                                 {
 178                                                     // angle as given
 179                                                     texture::GeoTexSvxHatch aHatch(aOutlineRange, getHatch().getDistance(), fAngle);
 180                                                     aHatch.appendTransformations(aMatrices);
 181                                                 }
 182                                             }
 183
 184                                             // create geometry from unit line
 185                                             basegfx::B2DPolyPolygon a2DHatchLines;
 186                                             basegfx::B2DPolygon a2DUnitLine;
 187                                             a2DUnitLine.append(basegfx::B2DPoint(0.0, 0.0));
 188                                             a2DUnitLine.append(basegfx::B2DPoint(1.0, 0.0));
 189
 190                                             for(sal_uInt32 c(0); c < aMatrices.size(); c++)
 191                                             {
 192                                                 const basegfx::B2DHomMatrix& rMatrix = aMatrices[c];
 193                                                 basegfx::B2DPolygon aNewLine(a2DUnitLine);
 194                                                 aNewLine.transform(rMatrix);
 195                                                 a2DHatchLines.append(aNewLine);
 196                                             }
 197
 198                                             if(a2DHatchLines.count())
 199                                             {
 200                                                 // clip against texture polygon
 201                                                 a2DHatchLines = basegfx::tools::clipPolyPolygonOnPolyPolygon(a2DHatchLines, aTexPolyPolygon, true, true);
 202                                             }
 203
 204                                             if(a2DHatchLines.count())
 205                                             {
 206                                                 // create 2d matrix with 2d vectors as column vectors and 2d point as offset, this represents
 207                                                 // a coordinate system transformation from unit coordinates to the new coordinate system
 208                                                 basegfx::B2DHomMatrix a2D;
 209                                                 a2D.set(0, 0, a2X.getX());
 210                                                 a2D.set(1, 0, a2X.getY());
 211                                                 a2D.set(0, 1, a2Y.getX());
 212                                                 a2D.set(1, 1, a2Y.getY());
 213                                                 a2D.set(0, 2, a2N.getX());
 214                                                 a2D.set(1, 2, a2N.getY());
 215
 216                                                 // invert that transformation, so we have a back-transformation from texture coordinates
 217                                                 // to unit coordinates
 218                                                 a2D.invert();
 219                                                 a2DHatchLines.transform(a2D);
 220
 221                                                 // expand back-transformated geometry tpo 3D
 222                                                 basegfx::B3DPolyPolygon a3DHatchLines(basegfx::tools::createB3DPolyPolygonFromB2DPolyPolygon(a2DHatchLines, 0.0));
 223
 224                                                 // create 3d matrix with 3d vectors as column vectors (0,0,1 as Z) and 3d point as offset, this represents
 225                                                 // a coordinate system transformation from unit coordinates to the object's 3d coordinate system
 226                                                 basegfx::B3DHomMatrix a3D;
 227                                                 a3D.set(0, 0, a3X.getX());
 228                                                 a3D.set(1, 0, a3X.getY());
 229                                                 a3D.set(2, 0, a3X.getZ());
 230                                                 a3D.set(0, 1, a3Y.getX());
 231                                                 a3D.set(1, 1, a3Y.getY());
 232                                                 a3D.set(2, 1, a3Y.getZ());
 233                                                 a3D.set(0, 3, a3N.getX());
 234                                                 a3D.set(1, 3, a3N.getY());
 235                                                 a3D.set(2, 3, a3N.getZ());
 236
 237                                                 // transform hatch lines to 3D object coordinates
 238                                                 a3DHatchLines.transform(a3D);
 239
 240                                                 // build primitives from this geometry
 241                                                 const sal_uInt32 nHatchLines(a3DHatchLines.count());
 242
 243                                                 for(sal_uInt32 d(0); d < nHatchLines; d++)
 244                                                 {
 245                                                     const Primitive3DReference xRef(new PolygonHairlinePrimitive3D(a3DHatchLines.getB3DPolygon(d), aHatchColor));
 246                                                     aDestination.push_back(xRef);
 247                                                 }
 248                                             }
 249                                         }
 250                                     }
 251
 252                                     break;
 253                                 }
 254                                 default :
 255                                 {
 256                                     // add reference to result
 257                                     aDestination.push_back(xReference);
 258                                     break;
 259                                 }
 260                             }
 261                         }
 262                         else
 263                         {
 264                             // unknown implementation, add to result
 265                             aDestination.push_back(xReference);
 266                         }
 267                     }
 268                 }
 269
 270                 // prepare return value
 271                 const sal_uInt32 nDestSize(aDestination.size());
 272                 aRetval.realloc(nDestSize);
 273
 274                 for(sal_uInt32 b(0); b < nDestSize; b++)
 275                 {
 276                     aRetval[b] = aDestination[b];
 277                 }
 278             }
 279
 280             return aRetval;
 281         }
 282
 283         HatchTexturePrimitive3D::HatchTexturePrimitive3D(
 284             const attribute::FillHatchAttribute& rHatch,
 285             const Primitive3DSequence& rChildren,
 286             const basegfx::B2DVector& rTextureSize,
 287             bool bModulate,
 288             bool bFilter)
 289         :       TexturePrimitive3D(rChildren, rTextureSize, bModulate, bFilter),
 290             maHatch(rHatch)
 291         {
 292         }
 293
 294         bool HatchTexturePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
 295         {
 296             if(TexturePrimitive3D::operator==(rPrimitive))
 297             {
 298                 const HatchTexturePrimitive3D& rCompare = (HatchTexturePrimitive3D&)rPrimitive;
 299
 300                 return (getHatch() == rCompare.getHatch());
 301             }
 302
 303             return false;
 304         }
 305
 306         // provide unique ID
 307         ImplPrimitrive3DIDBlock(HatchTexturePrimitive3D, PRIMITIVE3D_ID_HATCHTEXTUREPRIMITIVE3D)
 308
 309     } // end of namespace primitive3d
 310 } // end of namespace drawinglayer
 311
 312 //////////////////////////////////////////////////////////////////////////////
 313 // eof