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/*=========================================================================
Program: Visualization Toolkit
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkOpenVRCamera
* @brief OpenVR camera
*
* vtkOpenVRCamera is a concrete implementation of the abstract class
* vtkCamera. vtkOpenVRCamera interfaces to the OpenVR rendering library.
*/
#ifndef vtkOpenVRCamera_h
#define vtkOpenVRCamera_h
#include "vtkNew.h" // ivars
#include "vtkRenderingOpenVRModule.h" // For export macro
#include "vtkVRHMDCamera.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkRenderer;
class vtkMatrix4x4;
class VTKRENDERINGOPENVR_EXPORT vtkOpenVRCamera : public vtkVRHMDCamera
{
public:
static vtkOpenVRCamera* New();
vtkTypeMacro(vtkOpenVRCamera, vtkVRHMDCamera);
/**
* Implement base class method.
*/
void Render(vtkRenderer* ren) override;
protected:
vtkOpenVRCamera();
~vtkOpenVRCamera() override;
// gets the pose and projections for the left and right eyes from
// the openvr library
void UpdateHMDToEyeMatrices(vtkRenderer*);
void UpdateWorldToEyeMatrices(vtkRenderer*) override;
void UpdateEyeToProjectionMatrices(vtkRenderer*) override;
// all the matrices below are stored in VTK convention
// as A = Mx where x is a column vector.
// we get these from OpenVR
vtkNew<vtkMatrix4x4> HMDToLeftEyeMatrix;
vtkNew<vtkMatrix4x4> HMDToRightEyeMatrix;
// used as part of the calculation
vtkNew<vtkMatrix4x4> PhysicalToHMDMatrix;
private:
vtkOpenVRCamera(const vtkOpenVRCamera&) = delete;
void operator=(const vtkOpenVRCamera&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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