vtkOpenVRCamera.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#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);
 
  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