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98 lines
3.6 KiB
98 lines
3.6 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkInteractorStyleImage.h,v $
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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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// .NAME vtkInteractorStyleImage - interactive manipulation of the camera specialized for images
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// .SECTION Description
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// vtkInteractorStyleImage allows the user to interactively manipulate
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// (rotate, pan, zoomm etc.) the camera. vtkInteractorStyleImage is specially
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// designed to work with images that are being rendered with
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// vtkImageActor. Several events are overloaded from its superclass
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// vtkInteractorStyle, hence the mouse bindings are different. (The bindings
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// keep the camera's view plane normal perpendicular to the x-y plane.) In
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// summary the mouse events are as follows:
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// + Left Mouse button triggers window level events
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// + CTRL Left Mouse spins the camera around its view plane normal
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// + SHIFT Left Mouse pans the camera
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// + CTRL SHIFT Left Mouse dollys (a positional zoom) the camera
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// + Middle mouse button pans the camera
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// + Right mouse button dollys the camera.
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// + SHIFT Right Mouse triggers pick events
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//
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// Note that the renderer's actors are not moved; instead the camera is moved.
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// .SECTION See Also
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// vtkInteractorStyle vtkInteractorStyleTrackballActor
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// vtkInteractorStyleJoystickCamera vtkInteractorStyleJoystickActor
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#ifndef __vtkInteractorStyleImage_h
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#define __vtkInteractorStyleImage_h
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#include "vtkInteractorStyleTrackballCamera.h"
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// Motion flags
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#define VTKIS_WINDOW_LEVEL 1024
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#define VTKIS_PICK 1025
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class VTK_RENDERING_EXPORT vtkInteractorStyleImage : public vtkInteractorStyleTrackballCamera
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{
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public:
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static vtkInteractorStyleImage *New();
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vtkTypeRevisionMacro(vtkInteractorStyleImage, vtkInteractorStyleTrackballCamera);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Some useful information for handling window level
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vtkGetVector2Macro(WindowLevelStartPosition,int);
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vtkGetVector2Macro(WindowLevelCurrentPosition,int);
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// Description:
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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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virtual void OnMouseMove();
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virtual void OnLeftButtonDown();
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virtual void OnLeftButtonUp();
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virtual void OnRightButtonDown();
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virtual void OnRightButtonUp();
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// Description:
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// Override the "fly-to" (f keypress) for images.
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virtual void OnChar();
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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. Since
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// they might be called from OnTimer, they do not have mouse coord parameters
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// (use interactor's GetEventPosition and GetLastEventPosition)
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virtual void WindowLevel();
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virtual void Pick();
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// Interaction mode entry points used internally.
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virtual void StartWindowLevel();
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virtual void EndWindowLevel();
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virtual void StartPick();
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virtual void EndPick();
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protected:
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vtkInteractorStyleImage();
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~vtkInteractorStyleImage();
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int WindowLevelStartPosition[2];
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int WindowLevelCurrentPosition[2];
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private:
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vtkInteractorStyleImage(const vtkInteractorStyleImage&); // Not implemented.
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void operator=(const vtkInteractorStyleImage&); // Not implemented.
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};
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#endif
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