vtkVRControlsHelper.h

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/*=========================================================================
 
Program:   Visualization Toolkit
Module:    vtkVRControlsHelper.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.
 
=========================================================================*/
#ifndef vtkVRControlsHelper_h
#define vtkVRControlsHelper_h
 
#include "vtkEventData.h" // for vtkEventDataDevice
#include "vtkNew.h"       // for iVar
#include "vtkProp.h"
#include "vtkRenderingVRModule.h" // For export macro
#include "vtkWeakPointer.h"       // needed for vtkWeakPointer iVar.
#include <string>                 // for std::string
 
class vtkActor;
class vtkProperty;
class vtkPolyData;
class vtkPolyDataMapper;
class vtkCellArray;
class vtkPoints;
class vtkTextActor3D;
class vtkTransform;
 
class vtkLineSource;
class vtkPolyDataMapper;
class vtkRenderer;
class vtkCallbackCommand;
 
class VTKRENDERINGVR_EXPORT vtkVRControlsHelper : public vtkProp
{
public:
 
  vtkTypeMacro(vtkVRControlsHelper, vtkProp);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  enum ButtonSides
  {
    Back = -1,
    Front = 1
  };
 
  enum DrawSides
  {
    Left = -1,
    Right = 1
  };
 
 
  void BuildRepresentation();
  void UpdateRepresentation();
 
 
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
 
  void SetText(const std::string& str);
 
  void SetTooltipInfo(const char* s, int buttonSide, int drawSide, const char* txt)
  {
    if (!s || !txt)
    {
      return;
    }
    this->ComponentName = std::string(s);
    this->DrawSide = drawSide;
    this->ButtonSide = buttonSide;
    this->SetText(std::string(txt));
  }
 
  void SetEnabled(bool enabled);
  vtkGetMacro(Enabled, bool);
  vtkBooleanMacro(Enabled, bool);
 
  void SetDevice(vtkEventDataDevice val);
 
  virtual void SetRenderer(vtkRenderer* ren);
  virtual vtkRenderer* GetRenderer();
 
protected:
  vtkVRControlsHelper();
  ~vtkVRControlsHelper() override;
 
  double FrameSize[2];
 
  // The text
  vtkTextActor3D* TextActor;
  std::string Text;
 
  // The line
  vtkLineSource* LineSource;
  vtkPolyDataMapper* LineMapper;
  vtkActor* LineActor;
 
  vtkEventDataDevice Device;
 
  // Tooltip parameters
  std::string ComponentName;
  int DrawSide;   // Left/Right
  int ButtonSide; // Front/Back
 
  bool Enabled;
 
  double ControlPositionLC[3];
 
  // The renderer in which this widget is placed
  vtkWeakPointer<vtkRenderer> Renderer;
 
  vtkCallbackCommand* MoveCallbackCommand;
  unsigned long ObserverTag;
  static void MoveEvent(vtkObject* object, unsigned long event, void* clientdata, void* calldata);
 
  virtual void InitControlPosition() = 0;
 
  vtkNew<vtkTransform> TempTransform;
  double LastPhysicalTranslation[3];
  double LastEventPosition[3];
  double LastEventOrientation[4];
  bool NeedUpdate;
  bool LabelVisible;
 
private:
  vtkVRControlsHelper(const vtkVRControlsHelper&) = delete;
  void operator=(const vtkVRControlsHelper&) = delete;
};
 
#endif