102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkCameraHandleSource.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 vtkCameraHandleSource
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* @brief handle source used to represent one camera.
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*
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* vtkCameraHandleSource is deriving vtkHandleSource interface.
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* This handle represents a camera pointing in the focal point direction.
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* Its position and size can be modified.
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* If the directional parameter is set to true,
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* the camera is represented by one big arrow in the focal point direction
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* and one smaller pointing in the view up direction.
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* Else, the camera is only displayed as a simple sphere.
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*/
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#ifndef vtkCameraHandleSource_h
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#define vtkCameraHandleSource_h
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#include "vtkCamera.h" // for vtkCamera
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#include "vtkHandleSource.h"
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#include "vtkInteractionWidgetsModule.h" // For export macro
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class vtkArrowSource;
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class vtkActor;
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class vtkAppendPolyData;
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class vtkSphereSource;
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class vtkTransform;
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class vtkTransformFilter;
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class VTKINTERACTIONWIDGETS_EXPORT vtkCameraHandleSource : public vtkHandleSource
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{
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public:
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static vtkCameraHandleSource* New();
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vtkTypeMacro(vtkCameraHandleSource, vtkHandleSource);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Set the camera represented by this handle.
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* The camera can't be set to nullptr.
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*/
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void SetCamera(vtkCamera* cam);
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///@{
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/**
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* Set/Get the position of the camera handle.
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*/
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using vtkHandleSource::SetPosition;
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void SetPosition(double xPos, double yPos, double zPos) override;
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using vtkHandleSource::GetPosition;
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double* GetPosition() override;
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///@}
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///@{
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/**
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* Set/Get the direction of the camera handle.
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* The direction is used in case the camera handle is
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* represented as two arrows (when this->Directional = true).
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*/
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using vtkHandleSource::SetDirection;
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void SetDirection(double xTarget, double yTarget, double zTarget) override;
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using vtkHandleSource::GetDirection;
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double* GetDirection() override;
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///@}
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vtkCameraHandleSource(const vtkCameraHandleSource&) = delete;
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void operator=(const vtkCameraHandleSource&) = delete;
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protected:
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vtkCameraHandleSource();
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~vtkCameraHandleSource() override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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void RecomputeArrows();
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void RecomputeSphere();
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private:
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vtkSmartPointer<vtkCamera> Camera = vtkSmartPointer<vtkCamera>::New();
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vtkNew<vtkArrowSource> UpArrow;
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vtkNew<vtkArrowSource> FrontArrow;
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vtkNew<vtkTransform> UpTransform;
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vtkNew<vtkTransformFilter> UpTransformFilter;
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vtkNew<vtkTransform> FrontTransform;
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vtkNew<vtkTransformFilter> FrontTransformFilter;
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vtkNew<vtkAppendPolyData> ArrowsAppend;
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vtkNew<vtkSphereSource> PositionSphere;
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};
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#endif
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