vtkOpenVRCamera.h

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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.
 
=========================================================================*/
#ifndef vtkOpenVRCamera_h
#define vtkOpenVRCamera_h
 
#include "vtkNew.h"                   // ivars
#include "vtkRenderingOpenVRModule.h" // For export macro
#include "vtkTransform.h"             // ivars
#include "vtkVRCamera.h"
 
class vtkRenderer;
class vtkVRRenderWindow;
class vtkMatrix3x3;
class vtkMatrix4x4;
 
class VTKRENDERINGOPENVR_EXPORT vtkOpenVRCamera : public vtkVRCamera
{
public:
  static vtkOpenVRCamera* New();
  vtkTypeMacro(vtkOpenVRCamera, vtkVRCamera);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void Render(vtkRenderer* ren) override;
 
  void GetKeyMatrices(vtkRenderer* ren, vtkMatrix4x4*& WCVCMatrix, vtkMatrix3x3*& normalMatrix,
    vtkMatrix4x4*& VCDCMatrix, vtkMatrix4x4*& WCDCMatrix) override;
 
  void GetTrackingToDCMatrix(vtkMatrix4x4*& TCDCMatrix) override;
 
  // apply the left or right eye pose to the camera
  // position and focal point.  Factor is typically
  // 1.0 to add or -1.0 to subtract
  void ApplyEyePose(vtkVRRenderWindow*, bool left, double factor);
 
  // Get the VR Physical Space to World coordinate matrix
  vtkTransform* GetPhysicalToWorldTransform() { return this->PoseTransform.Get(); }
 
protected:
  vtkOpenVRCamera();
  ~vtkOpenVRCamera() override;
 
  // gets the pose and projections for the left and right eyes from
  // the openvr library
  void GetHMDEyePoses(vtkRenderer*);
  void GetHMDEyeProjections(vtkRenderer*);
 
  double LeftEyePose[3];
  double RightEyePose[3];
  vtkMatrix4x4* LeftEyeProjection;
  vtkMatrix4x4* RightEyeProjection;
 
  vtkMatrix4x4* LeftEyeTCDCMatrix;
  vtkMatrix4x4* RightEyeTCDCMatrix;
 
  // used to translate the
  // View to the HMD space
  vtkNew<vtkTransform> PoseTransform;
 
private:
  vtkOpenVRCamera(const vtkOpenVRCamera&) = delete;
  void operator=(const vtkOpenVRCamera&) = delete;
};
 
#endif