1 // Created on: 2011-10-14
2 // Created by: Roman KOZLOV
3 // Copyright (c) 2011-2014 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 __IVTKVTK_VIEW_H__
17 #define __IVTKVTK_VIEW_H__
19 #include <IVtk_IView.hxx>
20 #include <vtkSmartPointer.h>
25 DEFINE_STANDARD_HANDLE( IVtkVTK_View, IVtk_IView )
27 //! @class IVtkVTK_View
28 //! @brief ICamera implementation for VTK.
30 //! This class is used for obtaining view transformation parameters.
31 //! These parameters are used by selection algorithm to compute
32 //! projections of selectable (active) 3D shapes.
33 class IVtkVTK_View : public IVtk_IView
37 typedef Handle(IVtkVTK_View) Handle;
39 Standard_EXPORT IVtkVTK_View (vtkRenderer* theRenderer);
42 Standard_EXPORT virtual ~IVtkVTK_View();
44 //! @return true if this is a perspective view, and false otherwise.
45 Standard_EXPORT virtual bool IsPerspective() const Standard_OVERRIDE;
47 //! @return The focal distance of the view
48 Standard_EXPORT virtual double GetDistance() const Standard_OVERRIDE;
50 //! @return The world coordinates of the view position
51 Standard_EXPORT virtual void GetPosition (double& theX, double& theY, double& theZ) const Standard_OVERRIDE;
53 //! @return The "view up" direction of the view
54 Standard_EXPORT virtual void GetViewUp (double& theDx, double& theDy, double& theDz) const Standard_OVERRIDE;
56 //! @return The projection direction vector of this view
57 Standard_EXPORT virtual void GetDirectionOfProjection (double& theDx,
59 double& theDz) const Standard_OVERRIDE;
61 //! @return Three doubles containing scale components of the view transformation
62 Standard_EXPORT virtual void GetScale (double& theX, double& theY, double& theZ) const Standard_OVERRIDE;
64 //! @return The current view's zoom factor (for parallel projection)
65 Standard_EXPORT virtual double GetParallelScale() const Standard_OVERRIDE;
67 //! @return The current view angle (for perspective projection)
68 Standard_EXPORT virtual double GetViewAngle() const Standard_OVERRIDE;
70 //! @return Two doubles containing the display coordinates of the view window center
71 Standard_EXPORT virtual void GetViewCenter (double& theX, double& theY) const Standard_OVERRIDE;
73 //! Gets window size in screen coordinates in pixels
74 Standard_EXPORT virtual void GetWindowSize (int& theX, int& theY) const Standard_OVERRIDE;
76 //! Gets camera projection and orientation matrices
77 Standard_EXPORT virtual void GetCamera (Graphic3d_Mat4d& theProj,
78 Graphic3d_Mat4d& theOrient,
79 Standard_Boolean& theIsOrtho) const Standard_OVERRIDE;
81 //! Gets viewport coordinates
82 Standard_EXPORT virtual void GetViewport (Standard_Real& theX,
84 Standard_Real& theWidth,
85 Standard_Real& theHeight) const Standard_OVERRIDE;
87 //! Converts 3D display coordinates into 3D world coordinates.
88 //! @param [in] theDisplayPnt 2d point of display coordinates
89 //! @param [out] theWorldPnt 3d point of world coordinates
90 //! @return true if conversion was successful, false otherwise
91 Standard_EXPORT virtual bool DisplayToWorld (const gp_XY& theDisplayPnt, gp_XYZ& theWorldPnt) const Standard_OVERRIDE;
93 DEFINE_STANDARD_RTTIEXT(IVtkVTK_View,IVtk_IView)
96 vtkSmartPointer<vtkRenderer> myRenderer;
99 #endif // __IVTKVTK_VIEW_H__