LibreOffice Module svx (master)  1
e3dsceneupdater.cxx
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19 
20 #include <svx/e3dsceneupdater.hxx>
22 #include <svx/obj3d.hxx>
23 #include <svx/scene3d.hxx>
25 
26 
28 : mpScene(nullptr)
29 {
30  // Secure old 3D transformation stack before modification
31  if(const E3dObject* pE3dObject = dynamic_cast< const E3dObject* >(pObject))
32  {
33  mpScene = pE3dObject->getRootE3dSceneFromE3dObject();
34 
35  if(nullptr != mpScene && mpScene->getRootE3dSceneFromE3dObject() == mpScene)
36  {
37  // if there is a scene and it's the outmost scene, get current 3D range
39  const basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
40 
41  if(aAllContentRange.isEmpty())
42  {
43  // no content, nothing to do
44  mpScene = nullptr;
45  }
46  else
47  {
48  // secure current 3D transformation stack
49  mpViewInformation3D.reset(
51  rVCScene.getViewInformation3D(aAllContentRange)));
52  }
53  }
54  }
55 }
56 
58 {
60  {
61  // after changing parts of the scene, use the secured last 3d transformation stack and the new content
62  // range to calculate a new, eventually expanded or shrunk, 2D geometry for the scene and apply it.
63  // Get new content range
65  basegfx::B3DRange aAllContentRange(rVCScene.getAllContentRange3D());
66 
67  // only change when there is still content; else let scene stay at old SnapRect
68  if(!aAllContentRange.isEmpty())
69  {
70  // check if object transform of scene has changed
71  if(mpViewInformation3D->getObjectTransformation() != mpScene->GetTransform())
72  {
73  // If Yes, it needs to be updated since it's - for historical reasons -
74  // part of the basic 3d transformation stack of the scene
76  mpScene->GetTransform(), // replace object transformation with new local transform
77  mpViewInformation3D->getOrientation(),
78  mpViewInformation3D->getProjection(),
79  mpViewInformation3D->getDeviceToView(),
80  mpViewInformation3D->getViewTime(),
81  mpViewInformation3D->getExtendedInformationSequence());
82  mpViewInformation3D.reset(pNew);
83  }
84 
85  // transform content range to scene-relative coordinates using old 3d transformation stack
86  aAllContentRange.transform(mpViewInformation3D->getObjectToView());
87 
88  // build 2d relative content range
89  basegfx::B2DRange aSnapRange(
90  aAllContentRange.getMinX(), aAllContentRange.getMinY(),
91  aAllContentRange.getMaxX(), aAllContentRange.getMaxY());
92 
93  // transform to 2D world coordinates using scene's 2D transformation
94  aSnapRange.transform(rVCScene.getObjectTransformation());
95 
96  // snap to (old) integer
97  const tools::Rectangle aNewSnapRect(
98  sal_Int32(floor(aSnapRange.getMinX())), sal_Int32(floor(aSnapRange.getMinY())),
99  sal_Int32(ceil(aSnapRange.getMaxX())), sal_Int32(ceil(aSnapRange.getMaxY())));
100 
101  // set as new SnapRect and invalidate bound volume
102  if(mpScene->GetSnapRect() != aNewSnapRect)
103  {
104  mpScene->SetSnapRect(aNewSnapRect);
106  }
107  }
108  }
109 }
110 
111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
const drawinglayer::geometry::ViewInformation3D & getViewInformation3D(const ::basegfx::B3DRange &rContentRange) const
const basegfx::B3DHomMatrix & GetTransform() const
Definition: obj3d.hxx:111
virtual const tools::Rectangle & GetSnapRect() const override
Definition: svdoattr.cxx:91
sdr::contact::ViewContact & GetViewContact() const
Definition: svdobj.cxx:271
BASEGFX_DLLPUBLIC void transform(const B2DHomMatrix &rMatrix)
Abstract DrawObject.
Definition: svdobj.hxx:312
E3DModifySceneSnapRectUpdater(const SdrObject *mpObject)
const basegfx::B2DHomMatrix & getObjectTransformation() const
virtual void SetSnapRect(const tools::Rectangle &rRect)
Definition: svdobj.cxx:1649
std::unique_ptr< drawinglayer::geometry::ViewInformation3D > mpViewInformation3D
virtual E3dScene * getRootE3dSceneFromE3dObject() const override
Definition: scene3d.cxx:366
void InvalidateBoundVolume()
Definition: obj3d.cxx:333
basegfx::B3DRange getAllContentRange3D() const