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0027739: Visualization, TKV3d - implement individual acceleration data structure for selection of 2D persistent objects

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Low-level selection algorithms has been improved to explicitly support 2D
transformation persistent objects. This patch generally touches:

1) SelectMgr_SelectableObjectSet - the lists of objects has been split onto three
subsets (regular, 3d-persistent, 2d-persistent). Each subset has individual BVH
tree. The algorithms are now have more flexibility to update only those trees
that is really required for actual camera state.

2) SelectMgr_ViewerSelector - explicitly supports Eye space selection operations
on BVH tree for 2d-persistent subset. Change of camera position does not
anymore affect acceleration data structure (BVH tree) of 2d-persistent selectable objects.

3) Other classes from SelectMgr have been fine-tuned to provide appropriate API.

Porting notes:

This patch touches very low-level selection classes. If the low-level features were used
the following modifications may need to be considered for porting:

1) Iteration over objects of SelectMgr_SelectableObjectSet should now
be implemented with corresponding Iterator class.

2) SelectMgr_BaseFrustum::ScaleAndTransform and derived classes return
Handle(SelectMgr_BaseFrustum) instead of NCollection_Handle<> type.

Small correction of test case for issue CR27739
This commit is contained in:
apl
2016-09-09 15:53:58 +03:00
committed by bugmaster
parent c10703215e
commit 099f351396
21 changed files with 765 additions and 557 deletions
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28
src/StdSelect/StdSelect_ViewerSelector3d.cxx
View File

@@ -183,9 +183,11 @@ void StdSelect_ViewerSelector3d::Pick (const TColgp_Array1OfPnt2d& thePolyline,
//=======================================================================
void StdSelect_ViewerSelector3d::DisplaySensitive (const Handle(V3d_View)& theView)
{
for (Standard_Integer anObjectIdx = 0; anObjectIdx <= mySelectableObjects.Size(); ++anObjectIdx)
SelectMgr_SelectableObjectSet::Iterator aSelectableIt (mySelectableObjects);
for (; aSelectableIt.More(); aSelectableIt.Next())
{
const Handle (SelectMgr_SelectableObject)& anObj = mySelectableObjects.GetObjectById (anObjectIdx);
const Handle (SelectMgr_SelectableObject)& anObj = aSelectableIt.Value();
Handle(Graphic3d_Structure) aStruct = new Graphic3d_Structure (theView->Viewer()->StructureManager());
@@ -200,28 +202,6 @@ void StdSelect_ViewerSelector3d::DisplaySensitive (const Handle(V3d_View)& theVi
myStructs.Append (aStruct);
}
for (Standard_Integer anObjectIdx = 0; anObjectIdx <= mySelectableObjectsTrsfPers.Size(); ++anObjectIdx)
{
const Handle (SelectMgr_SelectableObject)& anObj = mySelectableObjectsTrsfPers.GetObjectById (anObjectIdx);
Handle(Graphic3d_Structure) aStruct = new Graphic3d_Structure (theView->Viewer()->StructureManager());
if (anObj->TransformPersistence().Flags == 0)
{
continue;
}
for (anObj->Init(); anObj->More(); anObj->Next())
{
if (anObj->CurrentSelection()->GetSelectionState() == SelectMgr_SOS_Activated)
{
computeSensitivePrs (aStruct, anObj->CurrentSelection(), anObj->Transformation(), anObj->TransformPersistence());
}
}
myStructs.Append (aStruct);
}
for (Standard_Integer aStructIdx = 1; aStructIdx <= myStructs.Length(); ++aStructIdx)
{
Handle(Graphic3d_Structure)& aStruct = myStructs.ChangeValue (aStructIdx);