text: /*=========================================================================
  
  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   vtkOpenVRModel
  * @brief   OpenVR device model
  
  * This internal class is used to load models
  * such as for the trackers and controllers and to
  * render them in the scene
  */
  
  #ifndef vtkOpenVRModel_h
  #define vtkOpenVRModel_h
  
  #include "vtkNew.h" // for ivar
  #include "vtkObject.h"
  #include "vtkOpenGLHelper.h"          // ivar
  #include "vtkRenderingOpenVRModule.h" // For export macro
  #include <openvr.h>                   // for ivars
  
  class vtkOpenVRRenderWindow;
  class vtkRenderWindow;
  class vtkOpenGLVertexBufferObject;
  class vtkTextureObject;
  class vtkMatrix4x4;
  class vtkOpenVRRay;
  
  class VTKRENDERINGOPENVR_EXPORT vtkOpenVRModel : public vtkObject
  {
  public:
    static vtkOpenVRModel* New();
    vtkTypeMacro(vtkOpenVRModel, vtkObject);
    void PrintSelf(ostream& os, vtkIndent indent) override;
  
    bool Build(vtkOpenVRRenderWindow* win);
    void Render(vtkOpenVRRenderWindow* win, const vr::TrackedDevicePose_t& pose);
  
    const std::string& GetName() const { return this->ModelName; }
    void SetName(const std::string& modelName) { this->ModelName = modelName; }
  
    // show the model
    void SetVisibility(bool v) { this->Visibility = v; }
    bool GetVisibility() { return this->Visibility; }
  
    // Set Ray parameters
    void SetShowRay(bool v);
    void SetRayLength(double length);
    void SetRayColor(double r, double g, double b);
    vtkOpenVRRay* GetRay() { return this->Ray; }
  
    void ReleaseGraphicsResources(vtkWindow* win);
  
    // the tracked device this model represents if any
    vr::TrackedDeviceIndex_t TrackedDevice;
  
    vr::RenderModel_t* RawModel;
  
  protected:
    vtkOpenVRModel();
    ~vtkOpenVRModel() override;
  
    std::string ModelName;
  
    bool Visibility;
    bool Loaded;
    bool FailedToLoad;
  
    vr::RenderModel_TextureMap_t* RawTexture;
    vtkOpenGLHelper ModelHelper;
    vtkOpenGLVertexBufferObject* ModelVBO;
    vtkNew<vtkTextureObject> TextureObject;
    vtkNew<vtkMatrix4x4> PoseMatrix;
  
    // Controller ray
    vtkNew<vtkOpenVRRay> Ray;
  
  private:
    vtkOpenVRModel(const vtkOpenVRModel&) = delete;
    void operator=(const vtkOpenVRModel&) = delete;
  };
  
  #endif
  