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127 lines
4.2 KiB
C++
127 lines
4.2 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkInteractorStyleTerrain.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkInteractorStyleTerrain
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* @brief manipulate camera in scene with natural view up (e.g., terrain)
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*
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* vtkInteractorStyleTerrain is used to manipulate a camera which is viewing
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* a scene with a natural view up, e.g., terrain. The camera in such a
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* scene is manipulated by specifying azimuth (angle around the view
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* up vector) and elevation (the angle from the horizon).
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*
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* The mouse binding for this class is as follows. Left mouse click followed
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* rotates the camera around the focal point using both elevation and azimuth
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* invocations on the camera. Left mouse motion in the horizontal direction
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* results in azimuth motion; left mouse motion in the vertical direction
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* results in elevation motion. Therefore, diagonal motion results in a
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* combination of azimuth and elevation. (If the shift key is held during
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* motion, then only one of elevation or azimuth is invoked, depending on the
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* whether the mouse motion is primarily horizontal or vertical.) Middle
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* mouse button pans the camera across the scene (again the shift key has a
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* similar effect on limiting the motion to the vertical or horizontal
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* direction. The right mouse is used to dolly (e.g., a type of zoom) towards
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* or away from the focal point.
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*
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* The class also supports some keypress events. The "r" key resets the
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* camera. The "e" key invokes the exit callback and by default exits the
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* program. The "f" key sets a new camera focal point and flys towards that
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* point. The "u" key invokes the user event. The "3" key toggles between
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* stereo and non-stero mode. The "l" key toggles on/off a latitude/longitude
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* markers that can be used to estimate/control position.
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*
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*
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* @sa
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* vtkInteractorObserver vtkInteractorStyle vtk3DWidget
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*/
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#ifndef vtkInteractorStyleTerrain_h
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#define vtkInteractorStyleTerrain_h
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#include "vtkInteractionStyleModule.h" // For export macro
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#include "vtkInteractorStyle.h"
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class vtkPolyDataMapper;
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class vtkSphereSource;
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class vtkExtractEdges;
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class VTKINTERACTIONSTYLE_EXPORT vtkInteractorStyleTerrain : public vtkInteractorStyle
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{
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public:
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/**
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* Instantiate the object.
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*/
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static vtkInteractorStyleTerrain* New();
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vtkTypeMacro(vtkInteractorStyleTerrain, vtkInteractorStyle);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Event bindings controlling the effects of pressing mouse buttons
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* or moving the mouse.
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*/
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void OnMouseMove() override;
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void OnLeftButtonDown() override;
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void OnLeftButtonUp() override;
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void OnMiddleButtonDown() override;
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void OnMiddleButtonUp() override;
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void OnRightButtonDown() override;
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void OnRightButtonUp() override;
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//@}
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/**
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* Override the "fly-to" (f keypress) for images.
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*/
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void OnChar() override;
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// These methods for the different interactions in different modes
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// are overridden in subclasses to perform the correct motion.
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void Rotate() override;
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void Pan() override;
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void Dolly() override;
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//@{
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/**
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* Turn on/off the latitude/longitude lines.
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*/
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vtkSetMacro(LatLongLines, vtkTypeBool);
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vtkGetMacro(LatLongLines, vtkTypeBool);
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vtkBooleanMacro(LatLongLines, vtkTypeBool);
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//@}
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protected:
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vtkInteractorStyleTerrain();
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~vtkInteractorStyleTerrain() override;
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// Internal helper attributes
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vtkTypeBool LatLongLines;
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vtkSphereSource* LatLongSphere;
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vtkPolyDataMapper* LatLongMapper;
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vtkActor* LatLongActor;
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vtkExtractEdges* LatLongExtractEdges;
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void SelectRepresentation();
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void CreateLatLong();
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double MotionFactor;
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private:
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vtkInteractorStyleTerrain(const vtkInteractorStyleTerrain&) = delete;
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void operator=(const vtkInteractorStyleTerrain&) = delete;
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};
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#endif
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