Select3D_SensitiveGroup - added option to force overlap check for all entities in the group.
Added interface for accessing last detected entity in the group.
Select3D_SensitivePrimitiveArray - added option to keep index map of detected elements
and option to split array into groups for faster initialization of extra-large arrays.
BVH_Geometry, BVH_Object - added missing accessor ::IsDirty() for checking BVH tree state.
Several methods in Selection classes have been moved to header files for better inlining.
BVH_Constants - added new enumeration defining common constant values used with BVH trees.
BVH - replaced NCollection_Handle with Standard_Transient handle
in classes BVH_Properties, BVH_Builder, BVH_Tree, BVH_Object.
Defined global BVH-builders instead of allocating a new one for each object set.
SelectMgr_ViewerSelector - added new method ::SetEntitySetBuilder() defining
default BVH Tree builder for SelectMgr_SensitiveEntitySet.
Added new method SelectMgr_SensitiveEntitySet::SetBuilder()
for overriding default BVH tree builder.
Select3D_SensitiveSet now stores BVH_PrimitiveSet as class field (no dynamic allocation),
and BVH_PrimitiveSet subclass now stores raw pointer to Select3D_SensitiveSet (no smart pointer).
Select3D_BVHPrimitiveContent definition has been moved into Select3D_SensitiveSet
class definition to avoid confusion.
Unused field Select3D_SensitiveSet::myIsLeftChildQueuedFirst has been removed.
In frames of this issue binary BVH tree produced by building algorithms was collapsed into 4-ary BVH (QBVH).
The BVH traversal code in GLSL was modified to process such trees correctly.
This allows to implore thread coherence, decrease BVH memory consumption (~2 times), and use traversal stack of the half size.
As a result, ray tracing scalability is improved, as well as rendering performance. For various setups, speedup is 12-18%.
New class Select3D_SensitivePrimitiveArray can be initialized directly from
presentation data structures Graphic3d_Buffer defining triangulation or point set.
This class also can combine several elements into patches
to reduce BVH initialization time in at the expense of slower detection time.
AIS_PointCloud::ComputeSelection() - selection is now computed on point set using Select3D_SensitivePrimitiveArray by default.
PrsMgr_PresentableObject::Compute() - redundant default argument value has been dropped.
BVH - store BVH_Set size in local variable to simplify debugging.
2 modes of rectangular selection are available: inclusion-only and overlap-allowing;
The modes can be switched using method AllowOverlapDetection from StdSelect_ViewerSelector3d;
BVH for sensitive entities now builds if there is more than max number of leafs in collection;
Added option -allowoverlap to command vselect;
Interactive rectangular selection in Draw is now available in 2 modes:
- if the user starts selection from upper corners, only fully included objects will be selected;
- if the user starts selection from lower corners, both partially and fully overlapped objects will be selected.
Redesign of selection mechanism:
- implemented 3-level BVH tree for selection;
- selection now calculates in 3D space;
- intersection tests were moved to SelectMgr_BaseFrustum descendants;
- removed .cdl files in Select3D and .cdl related to selection in MeshVS;
- SelectMgr_ViewerSelectors are now shared between local and global contexts;
- transformations of sensitive entities are now stored in SelectMgr_SelectableObject only. Sensitive entities are independent from transformations, it is applied to SelectMgr_SelectingVolumeManager instance only;
- connected and multiple connected interactive objects are now represented by their child objects only for SelectMgr_SelectionManager;
- if interactive object has child objects, they will be stored as separate objects in SelectMgr_SelectionManager now.
- test cases bugs/vis/bug24623_1, bug24623_2, bug24623_3, bug24623_4 to test performance and memory issues.
