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b30b2c1381
Added an argument to OpenGl_GraphicDriver::GetSharedContext() for returning only currently bound OpenGL context. SelectMgr_SelectingVolumeManager::GetMousePosition() - added getter returning mouse coordinates.
242 lines
12 KiB
C++
242 lines
12 KiB
C++
// Created on: 2014-05-22
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// Created by: Varvara POSKONINA
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// Copyright (c) 2005-2014 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_SelectingVolumeManager_HeaderFile
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#define _SelectMgr_SelectingVolumeManager_HeaderFile
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#include <NCollection_Handle.hxx>
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#include <Graphic3d_Camera.hxx>
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#include <Graphic3d_SequenceOfHClipPlane.hxx>
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#include <Graphic3d_WorldViewProjState.hxx>
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#include <SelectMgr_BaseFrustum.hxx>
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#include <SelectMgr_RectangularFrustum.hxx>
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#include <SelectMgr_TriangularFrustumSet.hxx>
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#include <SelectBasics_SelectingVolumeManager.hxx>
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//! This class is used to switch between active selecting volumes depending
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//! on selection type chosen by the user
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class SelectMgr_SelectingVolumeManager : public SelectBasics_SelectingVolumeManager
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{
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public:
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//! Creates instances of all available selecting volume types
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Standard_EXPORT SelectMgr_SelectingVolumeManager (Standard_Boolean theToAllocateFrustums = Standard_True);
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virtual ~SelectMgr_SelectingVolumeManager() {};
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//! IMPORTANT: Scaling makes sense only for frustum built on a single point!
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//! Note that this method does not perform any checks on type of the frustum.
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//!
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//! Returns a copy of the frustum resized according to the scale factor given
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//! and transforms it using the matrix given.
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//! There are no default parameters, but in case if:
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//! - transformation only is needed: @theScaleFactor must be initialized as any negative value;
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//! - scale only is needed: @theTrsf must be set to gp_Identity.
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//! Builder is an optional argument that represents corresponding settings for re-constructing transformed
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//! frustum from scratch. Can be null if reconstruction is not expected furthermore.
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Standard_EXPORT virtual SelectMgr_SelectingVolumeManager ScaleAndTransform (const Standard_Integer theScaleFactor,
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const gp_GTrsf& theTrsf,
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const Handle(SelectMgr_FrustumBuilder)& theBuilder = NULL) const;
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Standard_EXPORT virtual Standard_Integer GetActiveSelectionType() const Standard_OVERRIDE;
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Standard_EXPORT void SetActiveSelectionType (const SelectionType& theType);
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//! Returns current camera definition.
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const Handle(Graphic3d_Camera)& Camera() const { return mySelectingVolumes[Frustum]->Camera(); }
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//! Updates camera projection and orientation matrices in all selecting volumes
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Standard_EXPORT void SetCamera (const Handle(Graphic3d_Camera) theCamera);
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//! Updates camera projection and orientation matrices in all selecting volumes
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Standard_EXPORT void SetCamera (const Graphic3d_Mat4d& theProjection,
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const Graphic3d_Mat4d& theWorldView,
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const Standard_Boolean theIsOrthographic,
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const Graphic3d_WorldViewProjState& theWVPState = Graphic3d_WorldViewProjState());
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//! @return current projection transformation common for all selecting volumes
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Standard_EXPORT const Graphic3d_Mat4d& ProjectionMatrix() const;
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//! @return current world view transformation common for all selecting volumes
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Standard_EXPORT const Graphic3d_Mat4d& WorldViewMatrix() const;
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Standard_EXPORT void WindowSize (Standard_Integer& theWidth, Standard_Integer& theHeight) const;
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//! @return current camera world view projection transformation state common for all selecting volumes
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Standard_EXPORT const Graphic3d_WorldViewProjState& WorldViewProjState() const;
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//! Updates viewport in all selecting volumes
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Standard_EXPORT void SetViewport (const Standard_Real theX,
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const Standard_Real theY,
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const Standard_Real theWidth,
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const Standard_Real theHeight);
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//! Updates pixel tolerance in all selecting volumes
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Standard_EXPORT void SetPixelTolerance (const Standard_Integer theTolerance);
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//! Updates window size in all selecting volumes
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Standard_EXPORT void SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight);
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//! Builds rectangular selecting frustum for point selection
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Standard_EXPORT void BuildSelectingVolume (const gp_Pnt2d& thePoint);
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//! Builds rectangular selecting frustum for box selection
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Standard_EXPORT void BuildSelectingVolume (const gp_Pnt2d& theMinPt,
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const gp_Pnt2d& theMaxPt);
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//! Builds set of triangular selecting frustums for polyline selection
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Standard_EXPORT void BuildSelectingVolume (const TColgp_Array1OfPnt2d& thePoints);
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//! SAT intersection test between defined volume and given axis-aligned box
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Standard_EXPORT virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theBoxMin,
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const SelectMgr_Vec3& theBoxMax,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by axis-aligned bounding box
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//! with minimum corner at point theMinPt and maximum at point theMaxPt
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Standard_EXPORT virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theBoxMin,
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const SelectMgr_Vec3& theBoxMax,
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Standard_Boolean* theInside = NULL) const Standard_OVERRIDE;
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//! Intersection test between defined volume and given point
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Intersection test between defined volume and given point
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt) const Standard_OVERRIDE;
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//! SAT intersection test between defined volume and given ordered set of points,
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//! representing line segments. The test may be considered of interior part or
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//! boundary line defined by segments depending on given sensitivity type
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Standard_EXPORT virtual Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPts,
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Standard_Integer theSensType,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! SAT intersection test between defined volume and given ordered set of points,
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//! representing line segments. The test may be considered of interior part or
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//! boundary line defined by segments depending on given sensitivity type
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Standard_EXPORT virtual Standard_Boolean Overlaps (const TColgp_Array1OfPnt& theArrayOfPts,
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Standard_Integer theSensType,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Checks if line segment overlaps selecting frustum
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
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const gp_Pnt& thePnt2,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! SAT intersection test between defined volume and given triangle. The test may
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//! be considered of interior part or boundary line defined by triangle vertices
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//! depending on given sensitivity type
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
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const gp_Pnt& thePnt2,
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const gp_Pnt& thePnt3,
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Standard_Integer theSensType,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Measures distance between 3d projection of user-picked
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//! screen point and given point theCOG
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Standard_EXPORT virtual Standard_Real DistToGeometryCenter (const gp_Pnt& theCOG) const Standard_OVERRIDE;
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//! Calculates the point on a view ray that was detected during the run of selection algo by given depth.
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//! Throws exception if active selection type is not Point.
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Standard_EXPORT virtual gp_Pnt DetectedPoint (const Standard_Real theDepth) const Standard_OVERRIDE;
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//! Checks if the point of sensitive in which selection was detected belongs
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//! to the region defined by clipping planes
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Standard_EXPORT virtual Standard_Boolean IsClipped (const Graphic3d_SequenceOfHClipPlane& thePlanes,
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const Standard_Real& theDepth) const;
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//! Is used for rectangular selection only
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//! If theIsToAllow is false, only fully included sensitives will be detected, otherwise the algorithm will
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//! mark both included and overlapped entities as matched
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Standard_EXPORT virtual void AllowOverlapDetection (const Standard_Boolean theIsToAllow);
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Standard_EXPORT virtual Standard_Boolean IsOverlapAllowed() const Standard_OVERRIDE;
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//! Return view clipping planes.
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const Handle(Graphic3d_SequenceOfHClipPlane)& ViewClipping() const { return myViewClipPlanes; }
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//! Valid for point selection only!
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//! Computes depth range for global (defined for the whole view) clipping planes.
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Standard_EXPORT void SetViewClipping (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes);
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//! Set if view clipping plane is enabled or not.
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//! @return previous flag value
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Standard_EXPORT Standard_Boolean SetViewClippingEnabled (const Standard_Boolean theToEnable);
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//! A set of helper functions that return rectangular selecting frustum data
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Standard_EXPORT const gp_Pnt* GetVertices() const;
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//! Valid only for point and rectangular selection.
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//! Returns projection of 2d mouse picked point or projection
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//! of center of 2d rectangle (for point and rectangular selection
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//! correspondingly) onto near view frustum plane
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Standard_EXPORT virtual gp_Pnt GetNearPickedPnt() const Standard_OVERRIDE;
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//! Valid only for point and rectangular selection.
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//! Returns projection of 2d mouse picked point or projection
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//! of center of 2d rectangle (for point and rectangular selection
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//! correspondingly) onto far view frustum plane
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Standard_EXPORT virtual gp_Pnt GetFarPickedPnt() const Standard_OVERRIDE;
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//! Return mouse coordinates for Point selection mode.
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virtual gp_Pnt2d GetMousePosition() const Standard_OVERRIDE
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{
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if (myActiveSelectionType != Point)
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{
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return gp_Pnt2d (RealLast(), RealLast());
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}
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const SelectMgr_RectangularFrustum* aFr = reinterpret_cast<const SelectMgr_RectangularFrustum*> (mySelectingVolumes[myActiveSelectionType / 2].get());
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return aFr->GetMousePosition();
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}
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//! Returns active selecting volume that was built during last
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//! run of OCCT selection mechanism
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Handle(SelectMgr_BaseFrustum) ActiveVolume() const
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{
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if (myActiveSelectionType == Unknown)
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return Handle(SelectMgr_BaseFrustum)();
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return mySelectingVolumes[myActiveSelectionType / 2];
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}
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//! Stores plane equation coefficients (in the following form:
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//! Ax + By + Cz + D = 0) to the given vector
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virtual void GetPlanes (NCollection_Vector<SelectMgr_Vec4>& thePlaneEquations) const Standard_OVERRIDE
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{
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if (myActiveSelectionType == Unknown)
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{
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thePlaneEquations.Clear();
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return;
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}
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return mySelectingVolumes[myActiveSelectionType / 2]->GetPlanes (thePlaneEquations);
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}
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private:
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enum { Frustum, FrustumSet, VolumeTypesNb }; //!< Defines the amount of available selecting volumes
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Handle(SelectMgr_BaseFrustum) mySelectingVolumes[VolumeTypesNb]; //!< Array of selecting volumes
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Handle(Graphic3d_SequenceOfHClipPlane) myViewClipPlanes; //!< view clipping planes
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Standard_Boolean myToAllowOverlap; //!< Defines if partially overlapped entities will me detected or not
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};
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#endif
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