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graphics/vtkInteractorStyleTrackballCamera.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkInteractorStyleTrackballCamera.h,v $
00005   Language:  C++
00006 
00007 
00008 Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
00009 All rights reserved.
00010 
00011 Redistribution and use in source and binary forms, with or without
00012 modification, are permitted provided that the following conditions are met:
00013 
00014  * Redistributions of source code must retain the above copyright notice,
00015    this list of conditions and the following disclaimer.
00016 
00017  * Redistributions in binary form must reproduce the above copyright notice,
00018    this list of conditions and the following disclaimer in the documentation
00019    and/or other materials provided with the distribution.
00020 
00021  * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
00022    of any contributors may be used to endorse or promote products derived
00023    from this software without specific prior written permission.
00024 
00025  * Modified source versions must be plainly marked as such, and must not be
00026    misrepresented as being the original software.
00027 
00028 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00029 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00030 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00031 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
00032 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00033 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00034 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00035 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00036 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00037 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00038 
00039 =========================================================================*/
00040 
00055 #ifndef __vtkInteractorStyleTrackballCamera_h
00056 #define __vtkInteractorStyleTrackballCamera_h
00057 
00058 #include "vtkInteractorStyle.h"
00059 
00060 
00061 #define VTK_INTERACTOR_STYLE_CAMERA_NONE    0
00062 #define VTK_INTERACTOR_STYLE_CAMERA_ROTATE  1
00063 #define VTK_INTERACTOR_STYLE_CAMERA_PAN     2
00064 #define VTK_INTERACTOR_STYLE_CAMERA_ZOOM    3
00065 #define VTK_INTERACTOR_STYLE_CAMERA_SPIN    4
00066 
00067 class VTK_EXPORT vtkInteractorStyleTrackballCamera : public vtkInteractorStyle
00068 {
00069 public:
00073   static vtkInteractorStyleTrackballCamera *New();
00074 
00075   vtkTypeMacro(vtkInteractorStyleTrackballCamera, vtkObject);
00076   void PrintSelf(ostream& os, vtkIndent indent);
00077 
00078   // Generic event bindings must be overridden in subclasses
00079   void OnMouseMove  (int ctrl, int shift, int x, int y);
00080   void OnLeftButtonDown(int ctrl, int shift, int x, int y);
00081   void OnLeftButtonUp  (int ctrl, int shift, int x, int y);
00082   void OnMiddleButtonDown(int ctrl, int shift, int x, int y);
00083   void OnMiddleButtonUp  (int ctrl, int shift, int x, int y);
00084   void OnRightButtonDown(int ctrl, int shift, int x, int y);
00085   void OnRightButtonUp  (int ctrl, int shift, int x, int y);
00086 
00087 protected:
00088   vtkInteractorStyleTrackballCamera();
00089   ~vtkInteractorStyleTrackballCamera();
00090   vtkInteractorStyleTrackballCamera(const vtkInteractorStyleTrackballCamera&) {};
00091   void operator=(const vtkInteractorStyleTrackballCamera&) {};
00092 
00093   void RotateXY(int dx, int dy);
00094   void PanXY(int x, int y, int oldX, int oldY);
00095   void DollyXY(int dx, int dy);
00096   void SpinXY(int dx, int dy, int oldX, int oldY);
00097   
00098   int State;
00099   float MotionFactor;
00100   float RadianToDegree;                 // constant: for conv from deg to rad
00101 };
00102 
00103 #endif

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