1 // Created on: 2014-08-21
2 // Created by: Varvara POSKONINA
3 // Copyright (c) 2005-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _SelectBasics_SelectingVolumeManager_HeaderFile
17 #define _SelectBasics_SelectingVolumeManager_HeaderFile
19 #include <BVH_Box.hxx>
21 #include <TColgp_HArray1OfPnt.hxx>
22 #include <SelectBasics_PickResult.hxx>
27 //! This class provides an interface for selecting volume manager,
28 //! which is responsible for all overlap detection methods and
29 //! calculation of minimum depth, distance to center of geometry
30 //! and detected closest point on entity.
31 class SelectBasics_SelectingVolumeManager
35 //! Available selection types
36 enum SelectionType { Point, Box, Polyline, Unknown };
40 SelectBasics_SelectingVolumeManager() {};
42 virtual ~SelectBasics_SelectingVolumeManager() {};
44 virtual Standard_Integer GetActiveSelectionType() const = 0;
46 //! Returns true if selecting volume is overlapped by box theBox
47 virtual Standard_Boolean Overlaps (const NCollection_Vec3<Standard_Real>& theBoxMin,
48 const NCollection_Vec3<Standard_Real>& theBoxMax,
49 SelectBasics_PickResult& thePickResult) const = 0;
51 //! Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum
52 //! corner at point theMinPt and maximum at point theMaxPt
53 virtual Standard_Boolean Overlaps (const NCollection_Vec3<Standard_Real>& theBoxMin,
54 const NCollection_Vec3<Standard_Real>& theBoxMax,
55 Standard_Boolean* theInside = NULL) const = 0;
57 //! Returns true if selecting volume is overlapped by point thePnt
58 virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
59 SelectBasics_PickResult& thePickResult) const = 0;
61 //! Returns true if selecting volume is overlapped by point thePnt.
62 //! Does not perform depth calculation, so this method is defined as
63 //! helper function for inclusion test.
64 virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt) const = 0;
66 //! Returns true if selecting volume is overlapped by planar convex polygon, which points
67 //! are stored in theArrayOfPts, taking into account sensitivity type theSensType
68 virtual Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPts,
69 Standard_Integer theSensType,
70 SelectBasics_PickResult& thePickResult) const = 0;
72 //! Returns true if selecting volume is overlapped by planar convex polygon, which points
73 //! are stored in theArrayOfPts, taking into account sensitivity type theSensType
74 virtual Standard_Boolean Overlaps (const TColgp_Array1OfPnt& theArrayOfPts,
75 Standard_Integer theSensType,
76 SelectBasics_PickResult& thePickResult) const = 0;
78 //! Returns true if selecting volume is overlapped by line segment with start point at thePt1
79 //! and end point at thePt2
80 virtual Standard_Boolean Overlaps (const gp_Pnt& thePt1,
82 SelectBasics_PickResult& thePickResult) const = 0;
84 //! Returns true if selecting volume is overlapped by triangle with vertices thePt1,
85 //! thePt2 and thePt3, taking into account sensitivity type theSensType
86 virtual Standard_Boolean Overlaps (const gp_Pnt& thePt1,
89 Standard_Integer theSensType,
90 SelectBasics_PickResult& thePickResult) const = 0;
92 //! Calculates distance from 3d projection of user-defined selection point
93 //! to the given point theCOG
94 virtual Standard_Real DistToGeometryCenter (const gp_Pnt& theCOG) const = 0;
96 virtual gp_Pnt DetectedPoint (const Standard_Real theDepth) const = 0;
98 virtual Standard_Boolean IsOverlapAllowed() const = 0;
100 //! Valid only for point and rectangular selection.
101 //! Returns projection of 2d mouse picked point or projection
102 //! of center of 2d rectangle (for point and rectangular selection
103 //! correspondingly) onto near view frustum plane
104 virtual gp_Pnt GetNearPickedPnt() const = 0;
106 //! Valid only for point and rectangular selection.
107 //! Returns projection of 2d mouse picked point or projection
108 //! of center of 2d rectangle (for point and rectangular selection
109 //! correspondingly) onto far view frustum plane
110 virtual gp_Pnt GetFarPickedPnt() const = 0;
112 //! Stores plane equation coefficients (in the following form:
113 //! Ax + By + Cz + D = 0) to the given vector
114 virtual void GetPlanes (NCollection_Vector<NCollection_Vec4<Standard_Real> >& thePlaneEquations) const = 0;
117 SelectionType myActiveSelectionType; //!< Active selection type: point, box or polyline
120 #endif // _SelectBasics_SelectingVolumeManager_HeaderFile