LCOV - code coverage report
Current view: top level - libreoffice/svx/source/engine3d - helperminimaldepth3d.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 66 0.0 %
Date: 2012-12-27 Functions: 0 6 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       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             : 
      21             : #include <helperminimaldepth3d.hxx>
      22             : #include <drawinglayer/processor3d/baseprocessor3d.hxx>
      23             : #include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
      24             : #include <drawinglayer/primitive3d/transformprimitive3d.hxx>
      25             : #include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
      26             : #include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
      27             : #include <svx/sdr/contact/viewcontactofe3d.hxx>
      28             : #include <svx/sdr/contact/viewcontactofe3dscene.hxx>
      29             : #include <svx/obj3d.hxx>
      30             : #include <svx/scene3d.hxx>
      31             : 
      32             : //////////////////////////////////////////////////////////////////////////////
      33             : 
      34             : namespace drawinglayer
      35             : {
      36             :     namespace processor3d
      37             :     {
      38           0 :         class MinimalDephInViewExtractor : public BaseProcessor3D
      39             :         {
      40             :         private:
      41             :             // the value which will be fetched as result
      42             :             double                                  mfMinimalDepth;
      43             : 
      44             :             // as tooling, the process() implementation takes over API handling and calls this
      45             :             // virtual render method when the primitive implementation is BasePrimitive3D-based.
      46             :             virtual void processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate);
      47             : 
      48             :         public:
      49           0 :             MinimalDephInViewExtractor(const geometry::ViewInformation3D& rViewInformation)
      50             :             :   BaseProcessor3D(rViewInformation),
      51           0 :                 mfMinimalDepth(DBL_MAX)
      52           0 :             {}
      53             : 
      54             :             // data access
      55           0 :             double getMinimalDepth() const { return mfMinimalDepth; }
      56             :         };
      57             : 
      58           0 :         void MinimalDephInViewExtractor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate)
      59             :         {
      60             :             // it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
      61           0 :             switch(rCandidate.getPrimitive3DID())
      62             :             {
      63             :                 case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D :
      64             :                 {
      65             :                     // transform group. Remember current transformations
      66           0 :                     const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate);
      67           0 :                     const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D());
      68             : 
      69             :                     // create new transformation; add new object transform from right side
      70             :                     const geometry::ViewInformation3D aNewViewInformation3D(
      71           0 :                         aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(),
      72           0 :                         aLastViewInformation3D.getOrientation(),
      73           0 :                         aLastViewInformation3D.getProjection(),
      74           0 :                         aLastViewInformation3D.getDeviceToView(),
      75             :                         aLastViewInformation3D.getViewTime(),
      76           0 :                         aLastViewInformation3D.getExtendedInformationSequence());
      77           0 :                     updateViewInformation(aNewViewInformation3D);
      78             : 
      79             :                     // let break down
      80           0 :                     process(rPrimitive.getChildren());
      81             : 
      82             :                     // restore transformations
      83           0 :                     updateViewInformation(aLastViewInformation3D);
      84           0 :                     break;
      85             :                 }
      86             :                 case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
      87             :                 {
      88             :                     // PolygonHairlinePrimitive3D
      89           0 :                     const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rCandidate);
      90           0 :                        const basegfx::B3DPolygon& rPolygon = rPrimitive.getB3DPolygon();
      91           0 :                     const sal_uInt32 nCount(rPolygon.count());
      92             : 
      93           0 :                     for(sal_uInt32 a(0); a < nCount; a++)
      94             :                     {
      95           0 :                         const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * rPolygon.getB3DPoint(a));
      96             : 
      97           0 :                         if(aPointInView.getZ() < mfMinimalDepth)
      98             :                         {
      99           0 :                             mfMinimalDepth = aPointInView.getZ();
     100             :                         }
     101           0 :                     }
     102             : 
     103           0 :                     break;
     104             :                 }
     105             :                 case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
     106             :                 {
     107             :                     // PolyPolygonMaterialPrimitive3D
     108           0 :                     const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate);
     109           0 :                        const basegfx::B3DPolyPolygon& rPolyPolygon = rPrimitive.getB3DPolyPolygon();
     110           0 :                     const sal_uInt32 nPolyCount(rPolyPolygon.count());
     111             : 
     112           0 :                     for(sal_uInt32 a(0); a < nPolyCount; a++)
     113             :                     {
     114           0 :                            const basegfx::B3DPolygon aPolygon(rPolyPolygon.getB3DPolygon(a));
     115           0 :                         const sal_uInt32 nCount(aPolygon.count());
     116             : 
     117           0 :                         for(sal_uInt32 b(0); b < nCount; b++)
     118             :                         {
     119           0 :                             const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * aPolygon.getB3DPoint(b));
     120             : 
     121           0 :                             if(aPointInView.getZ() < mfMinimalDepth)
     122             :                             {
     123           0 :                                 mfMinimalDepth = aPointInView.getZ();
     124             :                             }
     125           0 :                         }
     126           0 :                     }
     127             : 
     128           0 :                     break;
     129             :                 }
     130             :                 default :
     131             :                 {
     132             :                     // process recursively
     133           0 :                     process(rCandidate.get3DDecomposition(getViewInformation3D()));
     134           0 :                     break;
     135             :                 }
     136             :             }
     137           0 :         }
     138             :     } // end of namespace processor3d
     139             : } // end of namespace drawinglayer
     140             : 
     141             : //////////////////////////////////////////////////////////////////////////////
     142             : // changed to create values using VCs, Primitive3DSequence and ViewInformation3D to allow
     143             : // removal of old 3D bucket geometry. There is one slight difference in the result, it's
     144             : // in [0.0 .. 1.0] for Z-Depth since the scaling of the scene as 2D object is no longer
     145             : // part of the 3D transformations. This could be added since the ViewContactOfE3dScene is
     146             : // given, but is not needed since the permutation of the depth values needs only be correct
     147             : // relative to each other
     148             : 
     149           0 : double getMinimalDepthInViewCoordinates(const E3dCompoundObject& rObject)
     150             : {
     151             :     // this is a E3dCompoundObject, so it cannot be a scene (which is a E3dObject).
     152             :     // Get primitive sequence using VC
     153           0 :     const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
     154           0 :     const drawinglayer::primitive3d::Primitive3DSequence aPrimitives = rVCObject.getViewIndependentPrimitive3DSequence();
     155           0 :     double fRetval(DBL_MAX);
     156             : 
     157           0 :     if(aPrimitives.hasElements())
     158             :     {
     159           0 :         const E3dScene* pScene = rObject.GetScene();
     160             : 
     161           0 :         if(pScene)
     162             :         {
     163             :             // get ViewInformation3D from scene using VC
     164           0 :             const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
     165           0 :             const drawinglayer::geometry::ViewInformation3D aViewInfo3D(rVCScene.getViewInformation3D());
     166             : 
     167             :             // the scene's object transformation is already part of aViewInfo3D.getObjectTransformation()
     168             :             // for historical reasons (see ViewContactOfE3dScene::createViewInformation3D for more info)
     169             :             // and the object's transform is part of aPrimitives (and taken into account when decomposing
     170             :             // to PolygonHairlinePrimitive3D and PolyPolygonMaterialPrimitive3D). The missing part may be
     171             :             // some Scene SdrObjects lying in-between which may need to be added. This is e.g. used in chart,
     172             :             // and generally allowed in 3d scenes an their 3d object hierarchy
     173           0 :             basegfx::B3DHomMatrix aInBetweenSceneMatrix;
     174           0 :             E3dScene* pParentScene = dynamic_cast< E3dScene* >(rObject.GetParentObj());
     175             : 
     176           0 :             while(pParentScene && pParentScene != pScene)
     177             :             {
     178           0 :                 aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
     179           0 :                 pParentScene = dynamic_cast< E3dScene* >(pParentScene->GetParentObj());
     180             :             }
     181             : 
     182             :             // build new ViewInformation containing all transforms
     183             :             const drawinglayer::geometry::ViewInformation3D aNewViewInformation3D(
     184           0 :                 aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
     185           0 :                 aViewInfo3D.getOrientation(),
     186           0 :                 aViewInfo3D.getProjection(),
     187           0 :                 aViewInfo3D.getDeviceToView(),
     188             :                 aViewInfo3D.getViewTime(),
     189           0 :                 aViewInfo3D.getExtendedInformationSequence());
     190             : 
     191             :             // create extractor helper, proccess geometry and get return value
     192           0 :             drawinglayer::processor3d::MinimalDephInViewExtractor aExtractor(aNewViewInformation3D);
     193           0 :             aExtractor.process(aPrimitives);
     194           0 :             fRetval = aExtractor.getMinimalDepth();
     195             :         }
     196             :     }
     197             : 
     198           0 :     return fRetval;
     199             : }
     200             : 
     201             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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