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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkInteractorStyleTrackballActor
* @brief manipulate objects in the scene independent of each other
*
* vtkInteractorStyleTrackballActor allows the user to interact with (rotate,
* pan, etc.) objects in the scene independent of each other. In trackball
* interaction, the magnitude of the mouse motion is proportional to the
* actor motion associated with a particular mouse binding. For example,
* small left-button motions cause small changes in the rotation of the
* actor around its center point.
*
* The mouse bindings are as follows. For a 3-button mouse, the left button
* is for rotation, the right button for zooming, the middle button for
* panning, and ctrl + left button for spinning. (With fewer mouse buttons,
* ctrl + shift + left button is for zooming, and shift + left button is for
* panning.)
*
* @sa
* vtkInteractorStyleTrackballCamera vtkInteractorStyleJoystickActor
* vtkInteractorStyleJoystickCamera
*/
#ifndef vtkInteractorStyleTrackballActor_h
#define vtkInteractorStyleTrackballActor_h
#include "vtkInteractionStyleModule.h" // For export macro
#include "vtkInteractorStyle.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
VTK_ABI_NAMESPACE_BEGIN
class vtkCellPicker;
class VTKINTERACTIONSTYLE_EXPORT VTK_MARSHALAUTO vtkInteractorStyleTrackballActor
: public vtkInteractorStyle
{
public:
static vtkInteractorStyleTrackballActor* New();
vtkTypeMacro(vtkInteractorStyleTrackballActor, vtkInteractorStyle);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Event bindings controlling the effects of pressing mouse buttons
* or moving the mouse.
*/
void OnMouseMove() override;
void OnLeftButtonDown() override;
void OnLeftButtonUp() override;
void OnMiddleButtonDown() override;
void OnMiddleButtonUp() override;
void OnRightButtonDown() override;
void OnRightButtonUp() override;
///@}
// These methods for the different interactions in different modes
// are overridden in subclasses to perform the correct motion. Since
// they might be called from OnTimer, they do not have mouse coord parameters
// (use interactor's GetEventPosition and GetLastEventPosition)
void Rotate() override;
void Spin() override;
void Pan() override;
void Dolly() override;
void UniformScale() override;
protected:
vtkInteractorStyleTrackballActor();
~vtkInteractorStyleTrackballActor() override;
void FindPickedActor(int x, int y);
void Prop3DTransform(
vtkProp3D* prop3D, double* boxCenter, int NumRotation, double** rotate, double* scale);
double MotionFactor;
vtkProp3D* InteractionProp;
vtkCellPicker* InteractionPicker;
private:
vtkInteractorStyleTrackballActor(const vtkInteractorStyleTrackballActor&) = delete;
void operator=(const vtkInteractorStyleTrackballActor&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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