text: /*=========================================================================
  
  Program:   Visualization Toolkit
  Module:    vtkVRModel.h
  
  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   vtkVRModel
   * @brief   VR device model
   *
   * Abstract class used to load models
   * such as for the trackers and controllers and to
   * render them in the scene
   *
   */
  
  #ifndef vtkVRModel_h
  #define vtkVRModel_h
  
  #include "vtkEventData.h" // for vtkEventDataDevice
  #include "vtkNew.h"       // for ivar
  #include "vtkObject.h"
  #include "vtkOpenGLHelper.h"      // ivar
  #include "vtkRenderingVRModule.h" // For export macro
  
  class vtkMatrix4x4;
  class vtkOpenGLRenderWindow;
  class vtkOpenGLVertexBufferObject;
  class vtkTextureObject;
  class vtkVRRay;
  
  class VTKRENDERINGVR_EXPORT vtkVRModel : public vtkObject
  {
  public:
    vtkTypeMacro(vtkVRModel, vtkObject);
    void PrintSelf(ostream& os, vtkIndent indent) override;
  
    bool Build(vtkOpenGLRenderWindow* win);
  
    void Render(vtkOpenGLRenderWindow* win, vtkMatrix4x4* poseInTrackingCoordinates);
  
    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);
    vtkVRRay* GetRay() { return this->Ray; }
  
    void ReleaseGraphicsResources(vtkWindow* win);
  
  protected:
    vtkVRModel();
    ~vtkVRModel() override;
  
    virtual void FillModelHelper() = 0;
    virtual void SetPositionAndTCoords() = 0;
    virtual void CreateTextureObject(vtkOpenGLRenderWindow* win) = 0;
    virtual void LoadModelAndTexture(vtkOpenGLRenderWindow* win) = 0;
  
    std::string ModelName;
  
    bool Visibility;
    bool Loaded;
    bool FailedToLoad;
  
    vtkOpenGLHelper ModelHelper;
    vtkOpenGLVertexBufferObject* ModelVBO;
    vtkNew<vtkTextureObject> TextureObject;
    vtkNew<vtkMatrix4x4> PoseMatrix;
  
    // Controller ray
    vtkNew<vtkVRRay> Ray;
  
  private:
    vtkVRModel(const vtkVRModel&) = delete;
    void operator=(const vtkVRModel&) = delete;
  };
  
  #endif
  