64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkOpenGLPropItem.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 vtkOpenGLPropItem
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* @brief Sync Context2D state with vtk camera.
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*
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*
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* The vtkContext2D framework modifies the GL state directly, while some actors
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* and mappers rely on the modelview/projection matrices from vtkCamera. This
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* class is a layer between the two that updates the camera with the current
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* OpenGL state.
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*/
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#ifndef vtkOpenGLPropItem_h
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#define vtkOpenGLPropItem_h
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#include "vtkNew.h" // for vtkNew
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#include "vtkPropItem.h"
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#include "vtkRenderingContextOpenGL2Module.h" // For export macro
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class vtkCamera;
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class VTKRENDERINGCONTEXTOPENGL2_EXPORT vtkOpenGLPropItem : public vtkPropItem
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{
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public:
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static vtkOpenGLPropItem* New();
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vtkTypeMacro(vtkOpenGLPropItem, vtkPropItem);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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bool Paint(vtkContext2D* painter) override;
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protected:
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vtkOpenGLPropItem();
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~vtkOpenGLPropItem() override;
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// Sync the active vtkCamera with the GL state set by the painter.
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void UpdateTransforms() override;
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// Restore the vtkCamera state.
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void ResetTransforms() override;
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private:
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vtkNew<vtkCamera> CameraCache;
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vtkContext2D* Painter;
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vtkOpenGLPropItem(const vtkOpenGLPropItem&) = delete;
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void operator=(const vtkOpenGLPropItem&) = delete;
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};
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#endif // vtkOpenGLPropItem_h
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