drawinglayer/source/processor2d/hittestprocessor2d.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
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   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <drawinglayer/processor2d/hittestprocessor2d.hxx>
  21 #include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
  22 #include <drawinglayer/primitive2d/transformprimitive2d.hxx>
  23 #include <drawinglayer/primitive2d/polygonprimitive2d.hxx>
  24 #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
  25 #include <basegfx/polygon/b2dpolygontools.hxx>
  26 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  27 #include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
  28 #include <drawinglayer/primitive2d/maskprimitive2d.hxx>
  29 #include <drawinglayer/primitive2d/sceneprimitive2d.hxx>
  30 #include <drawinglayer/primitive2d/pointarrayprimitive2d.hxx>
  31 #include <basegfx/matrix/b3dhommatrix.hxx>
  32 #include <drawinglayer/processor3d/cutfindprocessor3d.hxx>
  33 #include <drawinglayer/primitive2d/hiddengeometryprimitive2d.hxx>
  34 #include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
  35 #include <comphelper/lok.hxx>
  36
  37 namespace drawinglayer
  38 {
  39     namespace processor2d
  40     {
  41         HitTestProcessor2D::HitTestProcessor2D(const geometry::ViewInformation2D& rViewInformation,
  42             const basegfx::B2DPoint& rLogicHitPosition,
  43             double fLogicHitTolerance,
  44             bool bHitTextOnly)
  45         :   BaseProcessor2D(rViewInformation),
  46             maDiscreteHitPosition(),
  47             mfDiscreteHitTolerance(0.0),
  48             mbHit(false),
  49             mbHitToleranceUsed(false),
  50             mbUseInvisiblePrimitiveContent(true),
  51             mbHitTextOnly(bHitTextOnly)
  52         {
  53             // init hit tolerance
  54             mfDiscreteHitTolerance = fLogicHitTolerance;
  55
  56             if(basegfx::fTools::less(mfDiscreteHitTolerance, 0.0))
  57             {
  58                 // ensure input parameter for hit tolerance is >= 0.0
  59                 mfDiscreteHitTolerance = 0.0;
  60             }
  61             else if(basegfx::fTools::more(mfDiscreteHitTolerance, 0.0))
  62             {
  63                 // generate discrete hit tolerance
  64                 mfDiscreteHitTolerance = (getViewInformation2D().getObjectToViewTransformation()
  65                     * basegfx::B2DVector(mfDiscreteHitTolerance, 0.0)).getLength();
  66             }
  67
  68             // gererate discrete hit position
  69             maDiscreteHitPosition = getViewInformation2D().getObjectToViewTransformation() * rLogicHitPosition;
  70
  71             // check if HitTolerance is used
  72             mbHitToleranceUsed = basegfx::fTools::more(getDiscreteHitTolerance(), 0.0);
  73         }
  74
  75         HitTestProcessor2D::~HitTestProcessor2D()
  76         {
  77         }
  78
  79         bool HitTestProcessor2D::checkHairlineHitWithTolerance(
  80             const basegfx::B2DPolygon& rPolygon,
  81             double fDiscreteHitTolerance)
  82         {
  83             basegfx::B2DPolygon aLocalPolygon(rPolygon);
  84             aLocalPolygon.transform(getViewInformation2D().getObjectToViewTransformation());
  85
  86             // get discrete range
  87             basegfx::B2DRange aPolygonRange(aLocalPolygon.getB2DRange());
  88
  89             if(basegfx::fTools::more(fDiscreteHitTolerance, 0.0))
  90             {
  91                 aPolygonRange.grow(fDiscreteHitTolerance);
  92             }
  93
  94             // do rough range test first
  95             if(aPolygonRange.isInside(getDiscreteHitPosition()))
  96             {
  97                 // check if a polygon edge is hit
  98                 return basegfx::tools::isInEpsilonRange(
  99                     aLocalPolygon,
 100                     getDiscreteHitPosition(),
 101                     fDiscreteHitTolerance);
 102             }
 103
 104             return false;
 105         }
 106
 107         bool HitTestProcessor2D::checkFillHitWithTolerance(
 108             const basegfx::B2DPolyPolygon& rPolyPolygon,
 109             double fDiscreteHitTolerance)
 110         {
 111             bool bRetval(false);
 112             basegfx::B2DPolyPolygon aLocalPolyPolygon(rPolyPolygon);
 113             aLocalPolyPolygon.transform(getViewInformation2D().getObjectToViewTransformation());
 114
 115             // get discrete range
 116             basegfx::B2DRange aPolygonRange(aLocalPolyPolygon.getB2DRange());
 117             const bool bDiscreteHitToleranceUsed(basegfx::fTools::more(fDiscreteHitTolerance, 0.0));
 118
 119             if(bDiscreteHitToleranceUsed)
 120             {
 121                 aPolygonRange.grow(fDiscreteHitTolerance);
 122             }
 123
 124             // do rough range test first
 125             if(aPolygonRange.isInside(getDiscreteHitPosition()))
 126             {
 127                 // if a HitTolerance is given, check for polygon edge hit in epsilon first
 128                 if(bDiscreteHitToleranceUsed &&
 129                     basegfx::tools::isInEpsilonRange(
 130                         aLocalPolyPolygon,
 131                         getDiscreteHitPosition(),
 132                         fDiscreteHitTolerance))
 133                 {
 134                     bRetval = true;
 135                 }
 136
 137                 // check for hit in filled polyPolygon
 138                 if(!bRetval && basegfx::tools::isInside(
 139                     aLocalPolyPolygon,
 140                     getDiscreteHitPosition(),
 141                     true))
 142                 {
 143                     bRetval = true;
 144                 }
 145             }
 146
 147             return bRetval;
 148         }
 149
 150         void HitTestProcessor2D::check3DHit(const primitive2d::ScenePrimitive2D& rCandidate)
 151         {
 152             // calculate relative point in unified 2D scene
 153             const basegfx::B2DPoint aLogicHitPosition(getViewInformation2D().getInverseObjectToViewTransformation() * getDiscreteHitPosition());
 154
 155             // use bitmap check in ScenePrimitive2D
 156             bool bTryFastResult(false);
 157
 158             if(rCandidate.tryToCheckLastVisualisationDirectHit(aLogicHitPosition, bTryFastResult))
 159             {
 160                 mbHit = bTryFastResult;
 161             }
 162             else
 163             {
 164                 basegfx::B2DHomMatrix aInverseSceneTransform(rCandidate.getObjectTransformation());
 165                 aInverseSceneTransform.invert();
 166                 const basegfx::B2DPoint aRelativePoint(aInverseSceneTransform * aLogicHitPosition);
 167
 168                 // check if test point is inside scene's unified area at all
 169                 if(aRelativePoint.getX() >= 0.0 && aRelativePoint.getX() <= 1.0
 170                     && aRelativePoint.getY() >= 0.0 && aRelativePoint.getY() <= 1.0)
 171                 {
 172                     // get 3D view information
 173                     const geometry::ViewInformation3D& rObjectViewInformation3D = rCandidate.getViewInformation3D();
 174
 175                     // create HitPoint Front and Back, transform to object coordinates
 176                     basegfx::B3DHomMatrix aViewToObject(rObjectViewInformation3D.getObjectToView());
 177                     aViewToObject.invert();
 178                     const basegfx::B3DPoint aFront(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 0.0));
 179                     const basegfx::B3DPoint aBack(aViewToObject * basegfx::B3DPoint(aRelativePoint.getX(), aRelativePoint.getY(), 1.0));
 180
 181                     if(!aFront.equal(aBack))
 182                     {
 183                         const primitive3d::Primitive3DContainer& rPrimitives = rCandidate.getChildren3D();
 184
 185                         if(!rPrimitives.empty())
 186                         {
 187                             // make BoundVolume empty and overlapping test for speedup
 188                             const basegfx::B3DRange aObjectRange(
 189                                     rPrimitives.getB3DRange(rObjectViewInformation3D));
 190
 191                             if(!aObjectRange.isEmpty())
 192                             {
 193                                 const basegfx::B3DRange aFrontBackRange(aFront, aBack);
 194
 195                                 if(aObjectRange.overlaps(aFrontBackRange))
 196                                 {
 197                                     // bound volumes hit, geometric cut tests needed
 198                                     drawinglayer::processor3d::CutFindProcessor aCutFindProcessor(
 199                                         rObjectViewInformation3D,
 200                                         aFront,
 201                                         aBack,
 202                                         true);
 203                                     aCutFindProcessor.process(rPrimitives);
 204
 205                                     mbHit = (0 != aCutFindProcessor.getCutPoints().size());
 206                                 }
 207                             }
 208                         }
 209                     }
 210                 }
 211
 212                 if(!getHit())
 213                 {
 214                     // empty 3D scene; Check for border hit
 215                     basegfx::B2DPolygon aOutline(basegfx::tools::createUnitPolygon());
 216                     aOutline.transform(rCandidate.getObjectTransformation());
 217
 218                     mbHit = checkHairlineHitWithTolerance(aOutline, getDiscreteHitTolerance());
 219                 }
 220             }
 221         }
 222
 223         void HitTestProcessor2D::processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate)
 224         {
 225             if(getHit())
 226             {
 227                 // stop processing as soon as a hit was recognized
 228                 return;
 229             }
 230
 231             switch(rCandidate.getPrimitive2DID())
 232             {
 233                 case PRIMITIVE2D_ID_TRANSFORMPRIMITIVE2D :
 234                 {
 235                     // remember current ViewInformation2D
 236                     const primitive2d::TransformPrimitive2D& rTransformCandidate(static_cast< const primitive2d::TransformPrimitive2D& >(rCandidate));
 237                     const geometry::ViewInformation2D aLastViewInformation2D(getViewInformation2D());
 238
 239                     // create new local ViewInformation2D containing transformation
 240                     const geometry::ViewInformation2D aViewInformation2D(
 241                         getViewInformation2D().getObjectTransformation() * rTransformCandidate.getTransformation(),
 242                         getViewInformation2D().getViewTransformation(),
 243                         getViewInformation2D().getViewport(),
 244                         getViewInformation2D().getVisualizedPage(),
 245                         getViewInformation2D().getViewTime(),
 246                         getViewInformation2D().getExtendedInformationSequence());
 247                     updateViewInformation(aViewInformation2D);
 248
 249                     // process child content recursively
 250                     process(rTransformCandidate.getChildren());
 251
 252                     // restore transformations
 253                     updateViewInformation(aLastViewInformation2D);
 254
 255                     break;
 256                 }
 257                 case PRIMITIVE2D_ID_POLYGONHAIRLINEPRIMITIVE2D :
 258                 {
 259                     if(!getHitTextOnly())
 260                     {
 261                         // create hairline in discrete coordinates
 262                         const primitive2d::PolygonHairlinePrimitive2D& rPolygonCandidate(static_cast< const primitive2d::PolygonHairlinePrimitive2D& >(rCandidate));
 263
 264                         // use hairline test
 265                         mbHit = checkHairlineHitWithTolerance(rPolygonCandidate.getB2DPolygon(), getDiscreteHitTolerance());
 266                     }
 267
 268                     break;
 269                 }
 270                 case PRIMITIVE2D_ID_POLYGONMARKERPRIMITIVE2D :
 271                 {
 272                     if(!getHitTextOnly())
 273                     {
 274                         // handle marker like hairline; no need to decompose in dashes
 275                         const primitive2d::PolygonMarkerPrimitive2D& rPolygonCandidate(static_cast< const primitive2d::PolygonMarkerPrimitive2D& >(rCandidate));
 276
 277                         // use hairline test
 278                         mbHit = checkHairlineHitWithTolerance(rPolygonCandidate.getB2DPolygon(), getDiscreteHitTolerance());
 279                     }
 280
 281                     break;
 282                 }
 283                 case PRIMITIVE2D_ID_POLYGONSTROKEPRIMITIVE2D :
 284                 {
 285                     if(!getHitTextOnly())
 286                     {
 287                         // handle stroke evtl. directly; no need to decompose to filled polygon outlines
 288                         const primitive2d::PolygonStrokePrimitive2D& rPolygonCandidate(static_cast< const primitive2d::PolygonStrokePrimitive2D& >(rCandidate));
 289                         const attribute::LineAttribute& rLineAttribute = rPolygonCandidate.getLineAttribute();
 290
 291                         if(basegfx::fTools::more(rLineAttribute.getWidth(), 0.0))
 292                         {
 293                             if(basegfx::B2DLineJoin::Miter == rLineAttribute.getLineJoin())
 294                             {
 295                                 // if line is mitered, use decomposition since mitered line
 296                                 // geometry may use more space than the geometry grown by half line width
 297                                 process(rCandidate.get2DDecomposition(getViewInformation2D()));
 298                             }
 299                             else
 300                             {
 301                                 // for all other B2DLINEJOIN_* do a hairline HitTest with expanded tolerance
 302                                 const basegfx::B2DVector aDiscreteHalfLineVector(getViewInformation2D().getObjectToViewTransformation()
 303                                     * basegfx::B2DVector(rLineAttribute.getWidth() * 0.5, 0.0));
 304                                 mbHit = checkHairlineHitWithTolerance(
 305                                     rPolygonCandidate.getB2DPolygon(),
 306                                     getDiscreteHitTolerance() + aDiscreteHalfLineVector.getLength());
 307                             }
 308                         }
 309                         else
 310                         {
 311                             // hairline; fallback to hairline test. Do not decompose
 312                             // since this may decompose the hairline to dashes
 313                             mbHit = checkHairlineHitWithTolerance(rPolygonCandidate.getB2DPolygon(), getDiscreteHitTolerance());
 314                         }
 315                     }
 316
 317                     break;
 318                 }
 319                 case PRIMITIVE2D_ID_POLYGONWAVEPRIMITIVE2D :
 320                 {
 321                     if(!getHitTextOnly())
 322                     {
 323                         // do not use decompose; just handle like a line with width
 324                         const primitive2d::PolygonWavePrimitive2D& rPolygonCandidate(static_cast< const primitive2d::PolygonWavePrimitive2D& >(rCandidate));
 325                         double fLogicHitTolerance(0.0);
 326
 327                         // if WaveHeight, grow by it
 328                         if(basegfx::fTools::more(rPolygonCandidate.getWaveHeight(), 0.0))
 329                         {
 330                             fLogicHitTolerance += rPolygonCandidate.getWaveHeight();
 331                         }
 332
 333                         // if line width, grow by it
 334                         if(basegfx::fTools::more(rPolygonCandidate.getLineAttribute().getWidth(), 0.0))
 335                         {
 336                             fLogicHitTolerance += rPolygonCandidate.getLineAttribute().getWidth() * 0.5;
 337                         }
 338
 339                         const basegfx::B2DVector aDiscreteHalfLineVector(getViewInformation2D().getObjectToViewTransformation()
 340                             * basegfx::B2DVector(fLogicHitTolerance, 0.0));
 341
 342                         mbHit = checkHairlineHitWithTolerance(
 343                             rPolygonCandidate.getB2DPolygon(),
 344                             getDiscreteHitTolerance() + aDiscreteHalfLineVector.getLength());
 345                     }
 346
 347                     break;
 348                 }
 349                 case PRIMITIVE2D_ID_POLYPOLYGONCOLORPRIMITIVE2D :
 350                 {
 351                     if(!getHitTextOnly())
 352                     {
 353                         // create filled polyPolygon in discrete coordinates
 354                         const primitive2d::PolyPolygonColorPrimitive2D& rPolygonCandidate(static_cast< const primitive2d::PolyPolygonColorPrimitive2D& >(rCandidate));
 355
 356                         // use fill hit test
 357                         mbHit = checkFillHitWithTolerance(rPolygonCandidate.getB2DPolyPolygon(), getDiscreteHitTolerance());
 358                     }
 359
 360                     break;
 361                 }
 362                 case PRIMITIVE2D_ID_TRANSPARENCEPRIMITIVE2D :
 363                 {
 364                     // sub-transparence group
 365                     const primitive2d::TransparencePrimitive2D& rTransCandidate(static_cast< const primitive2d::TransparencePrimitive2D& >(rCandidate));
 366
 367                     // Currently the transparence content is not taken into account; only
 368                     // the children are recursively checked for hit. This may be refined for
 369                     // parts where the content is completely transparent if needed.
 370                     process(rTransCandidate.getChildren());
 371
 372                     break;
 373                 }
 374                 case PRIMITIVE2D_ID_MASKPRIMITIVE2D :
 375                 {
 376                     // create mask in discrete coordinates; only recursively continue
 377                     // with content when HitTest position is inside the mask
 378                     const primitive2d::MaskPrimitive2D& rMaskCandidate(static_cast< const primitive2d::MaskPrimitive2D& >(rCandidate));
 379
 380                     // use fill hit test
 381                     if(checkFillHitWithTolerance(rMaskCandidate.getMask(), getDiscreteHitTolerance()))
 382                     {
 383                         // recursively HitTest children
 384                         process(rMaskCandidate.getChildren());
 385                     }
 386
 387                     break;
 388                 }
 389                 case PRIMITIVE2D_ID_SCENEPRIMITIVE2D :
 390                 {
 391                     if(!getHitTextOnly())
 392                     {
 393                         const primitive2d::ScenePrimitive2D& rScenePrimitive2D(
 394                             static_cast< const primitive2d::ScenePrimitive2D& >(rCandidate));
 395                         check3DHit(rScenePrimitive2D);
 396                     }
 397
 398                     break;
 399                 }
 400                 case PRIMITIVE2D_ID_WRONGSPELLPRIMITIVE2D :
 401                 case PRIMITIVE2D_ID_MARKERARRAYPRIMITIVE2D :
 402                 case PRIMITIVE2D_ID_GRIDPRIMITIVE2D :
 403                 case PRIMITIVE2D_ID_HELPLINEPRIMITIVE2D :
 404                 {
 405                     // ignorable primitives
 406                     break;
 407                 }
 408                 case PRIMITIVE2D_ID_SHADOWPRIMITIVE2D :
 409                 {
 410                     // Ignore shadows; we do not want to have shadows hittable.
 411                     // Remove this one to make shadows hittable on demand.
 412                     break;
 413                 }
 414                 case PRIMITIVE2D_ID_TEXTSIMPLEPORTIONPRIMITIVE2D :
 415                 case PRIMITIVE2D_ID_TEXTDECORATEDPORTIONPRIMITIVE2D :
 416                 {
 417                     // for text use the BoundRect of the primitive itself
 418                     const basegfx::B2DRange aRange(rCandidate.getB2DRange(getViewInformation2D()));
 419
 420                     if(!aRange.isEmpty())
 421                     {
 422                         const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(aRange));
 423                         mbHit = checkFillHitWithTolerance(basegfx::B2DPolyPolygon(aOutline), getDiscreteHitTolerance());
 424                     }
 425
 426                     break;
 427                 }
 428                 case PRIMITIVE2D_ID_BITMAPPRIMITIVE2D :
 429                 {
 430                     if(!getHitTextOnly())
 431                     {
 432                         // The recently added BitmapEx::GetTransparency() makes it easy to extend
 433                         // the BitmapPrimitive2D HitTest to take the contained BotmapEx and it's
 434                         // transparency into account
 435                         const basegfx::B2DRange aRange(rCandidate.getB2DRange(getViewInformation2D()));
 436
 437                         if(!aRange.isEmpty())
 438                         {
 439                             const primitive2d::BitmapPrimitive2D& rBitmapCandidate(static_cast< const primitive2d::BitmapPrimitive2D& >(rCandidate));
 440                             const BitmapEx& rBitmapEx = rBitmapCandidate.getBitmapEx();
 441                             const Size& rSizePixel(rBitmapEx.GetSizePixel());
 442
 443                             // When tiled rendering, don't bother with the pixel size of the candidate.
 444                             if(rSizePixel.Width() && rSizePixel.Height() && !comphelper::LibreOfficeKit::isActive())
 445                             {
 446                                 basegfx::B2DHomMatrix aBackTransform(
 447                                     getViewInformation2D().getObjectToViewTransformation() *
 448                                     rBitmapCandidate.getTransform());
 449                                 aBackTransform.invert();
 450
 451                                 const basegfx::B2DPoint aRelativePoint(aBackTransform * getDiscreteHitPosition());
 452                                 const basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
 453
 454                                 if(aUnitRange.isInside(aRelativePoint))
 455                                 {
 456                                     const sal_Int32 nX(basegfx::fround(aRelativePoint.getX() * rSizePixel.Width()));
 457                                     const sal_Int32 nY(basegfx::fround(aRelativePoint.getY() * rSizePixel.Height()));
 458
 459                                     mbHit = (0xff != rBitmapEx.GetTransparency(nX, nY));
 460                                 }
 461                             }
 462                             else
 463                             {
 464                                 // fallback to standard HitTest
 465                                 const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(aRange));
 466                                 mbHit = checkFillHitWithTolerance(basegfx::B2DPolyPolygon(aOutline), getDiscreteHitTolerance());
 467                             }
 468                         }
 469                     }
 470
 471                     break;
 472                 }
 473                 case PRIMITIVE2D_ID_METAFILEPRIMITIVE2D :
 474                 case PRIMITIVE2D_ID_CONTROLPRIMITIVE2D :
 475                 case PRIMITIVE2D_ID_FILLGRADIENTPRIMITIVE2D :
 476                 case PRIMITIVE2D_ID_FILLHATCHPRIMITIVE2D :
 477                 case PRIMITIVE2D_ID_PAGEPREVIEWPRIMITIVE2D :
 478                 case PRIMITIVE2D_ID_MEDIAPRIMITIVE2D:
 479                 {
 480                     if(!getHitTextOnly())
 481                     {
 482                         // Class of primitives for which just the BoundRect of the primitive itself
 483                         // will be used for HitTest currently.
 484                         //
 485                         // This may be refined in the future, e.g:
 486                         // - For Bitmaps, the mask and/or transparence information may be used
 487                         // - For MetaFiles, the MetaFile content may be used
 488                         const basegfx::B2DRange aRange(rCandidate.getB2DRange(getViewInformation2D()));
 489
 490                         if(!aRange.isEmpty())
 491                         {
 492                             const basegfx::B2DPolygon aOutline(basegfx::tools::createPolygonFromRect(aRange));
 493                             mbHit = checkFillHitWithTolerance(basegfx::B2DPolyPolygon(aOutline), getDiscreteHitTolerance());
 494                         }
 495                     }
 496
 497                     break;
 498                 }
 499                 case PRIMITIVE2D_ID_HIDDENGEOMETRYPRIMITIVE2D :
 500                 {
 501                     // HiddenGeometryPrimitive2D; the default decomposition would return an empty seqence,
 502                     // so force this primitive to process its children directly if the switch is set
 503                     // (which is the default). Else, ignore invisible content
 504                     const primitive2d::HiddenGeometryPrimitive2D& rHiddenGeometry(static_cast< const primitive2d::HiddenGeometryPrimitive2D& >(rCandidate));
 505                     const primitive2d::Primitive2DContainer& rChildren = rHiddenGeometry.getChildren();
 506
 507                     if(!rChildren.empty())
 508                     {
 509                         if(getUseInvisiblePrimitiveContent())
 510                         {
 511                             process(rChildren);
 512                         }
 513                     }
 514
 515                     break;
 516                 }
 517                 case PRIMITIVE2D_ID_POINTARRAYPRIMITIVE2D :
 518                 {
 519                     if(!getHitTextOnly())
 520                     {
 521                         const primitive2d::PointArrayPrimitive2D& rPointArrayCandidate(static_cast< const primitive2d::PointArrayPrimitive2D& >(rCandidate));
 522                         const std::vector< basegfx::B2DPoint >& rPositions = rPointArrayCandidate.getPositions();
 523                         const sal_uInt32 nCount(rPositions.size());
 524
 525                         for(sal_uInt32 a(0); !getHit() && a < nCount; a++)
 526                         {
 527                             const basegfx::B2DPoint aPosition(getViewInformation2D().getObjectToViewTransformation() * rPositions[a]);
 528                             const basegfx::B2DVector aDistance(aPosition - getDiscreteHitPosition());
 529
 530                             if(aDistance.getLength() <= getDiscreteHitTolerance())
 531                             {
 532                                 mbHit = true;
 533                             }
 534                         }
 535                     }
 536
 537                     break;
 538                 }
 539                 default :
 540                 {
 541                     // process recursively
 542                     process(rCandidate.get2DDecomposition(getViewInformation2D()));
 543
 544                     break;
 545                 }
 546             }
 547         }
 548
 549     } // end of namespace processor2d
 550 } // end of namespace drawinglayer
 551
 552 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */