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3fe9ce0edd
Graphic3d_TransformPers now takes Graphic3d_Camera definition as argument for methods applying transformation. Graphic3d_TransformPers::Apply() now computes Graphic3d_TMF_TriedronPers transformation in the following way: - The object is moved onto Z focus distance. - The object is expected to be defined in pixels. - The Z coordinate on anchor point is used as offset from the view corner in pixels. - It is now possible to define not only corners of the view, but also middle of the side. - Graphic3d_TMF_TriedronPers now works with perspective projection. OpenGl_LayerList::ChangeLayer() - fixed removing of the element in old ZLayer. OpenGl_Layer::BoundingBox() now takes into account bounding box of Graphic3d_TMF_TriedronPers presentations for Z-fit operation.
119 lines
5.1 KiB
C++
119 lines
5.1 KiB
C++
// Created on: 2015-06-30
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// Created by: Anton POLETAEV
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// Copyright (c) 2015 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _SelectMgr_SelectableObjectTrsfPersSet_HeaderFile
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#define _SelectMgr_SelectableObjectTrsfPersSet_HeaderFile
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#include <BVH_Builder.hxx>
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#include <BVH_Set.hxx>
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#include <BVH_Tree.hxx>
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#include <Graphic3d_Camera.hxx>
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#include <Graphic3d_WorldViewProjState.hxx>
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#include <NCollection_Handle.hxx>
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#include <NCollection_IndexedMap.hxx>
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#include <Select3D_BndBox3d.hxx>
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#include <SelectMgr_SelectableObject.hxx>
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//! Primitive set specialized for transformation persistent selectable objects.
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//! Provides built-in mechanism to invalidate tree when world view projection state changes.
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//! Due to frequent invalidation of BVH tree the choice of BVH tree builder is made
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//! in favor of BVH linear builder (quick rebuild).
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class SelectMgr_SelectableObjectTrsfPersSet : public BVH_Set<Standard_Real, 3>
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{
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private:
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typedef NCollection_Handle<Select3D_BndBox3d> HBndBox3d;
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Handle(SelectMgr_SelectableObject) EMPTY_OBJ;
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public:
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//! Creates new empty objects set and initializes BVH tree
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//! builder to Linear builder with 1 element per list.
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Standard_EXPORT SelectMgr_SelectableObjectTrsfPersSet();
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//! Returns size of objects set.
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Standard_EXPORT virtual Standard_Integer Size() const Standard_OVERRIDE;
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//! Returns bounding box of object with index theIndex.
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Standard_EXPORT virtual Select3D_BndBox3d Box (const Standard_Integer theIndex) const Standard_OVERRIDE;
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//! Returns center of object with index theIndex in the set along the given axis theAxis.
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Standard_EXPORT virtual Standard_Real Center (const Standard_Integer theIndex,
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const Standard_Integer theAxis) const Standard_OVERRIDE;
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//! Swaps items with indexes theIndex1 and theIndex2 in the set.
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Standard_EXPORT virtual void Swap (const Standard_Integer theIndex1,
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const Standard_Integer theIndex2) Standard_OVERRIDE;
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//! Adds new selectable object to the set.
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//! @return true if structure added, otherwise returns false (structure already in the set).
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Standard_EXPORT Standard_Boolean Append (const Handle(SelectMgr_SelectableObject)& theObject);
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//! Removes selectable object from set.
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//! @return true if structure removed, otherwise returns false (structure is not in the set).
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Standard_EXPORT Standard_Boolean Remove (const Handle(SelectMgr_SelectableObject)& theObject);
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//! Returns object from set by theIndex given.
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const Handle(SelectMgr_SelectableObject)& GetObjectById (const Standard_Integer theIndex) const
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{
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return myObjects.FindKey (theIndex + 1);
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}
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//! Marks object state as outdated (needs BVH rebuilding).
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void MarkDirty()
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{
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myIsDirty = Standard_True;
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}
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//! Returns true if this objects set contains theObject given
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Standard_Boolean Contains (const Handle(SelectMgr_SelectableObject)& theObject) const
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{
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return myObjects.Contains (theObject);
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}
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//! Returns BVH tree for the given world view projection (builds it if necessary).
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Standard_EXPORT const NCollection_Handle<BVH_Tree<Standard_Real, 3> >& BVH (const Handle(Graphic3d_Camera)& theCamera,
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const Graphic3d_Mat4d& theProjectionMatrix,
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const Graphic3d_Mat4d& theWorldViewMatrix,
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const Standard_Integer theViewportWidth,
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const Standard_Integer theViewportHeight,
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const Graphic3d_WorldViewProjState& theWVPState);
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private:
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//! Marks internal object state as outdated.
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Standard_Boolean myIsDirty;
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//! Constructed bottom-level BVH.
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NCollection_Handle<BVH_Tree<Standard_Real, 3> > myBVH;
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//! Builder for bottom-level BVH.
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NCollection_Handle<BVH_Builder<Standard_Real, 3> > myBuilder;
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//! Set of transform persistence objects.
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NCollection_IndexedMap<Handle(SelectMgr_SelectableObject)> myObjects;
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//! Cached set of bounding boxes precomputed for transformation persistent selectable objects.
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//! Cache exists only during computation of BVH Tree. Bounding boxes are world view projection
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//! dependent and should by synchronized.
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NCollection_IndexedMap<HBndBox3d> myObjectBoxes;
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//! State of world view projection used for generation of transformation persistence bounding boxes.
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Graphic3d_WorldViewProjState myObjectBoxesState;
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};
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#endif
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