vtkOpenVRPanelRepresentation.h

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/*=========================================================================
 
Program:   Visualization Toolkit
Module:    vtkImplicitPlaneRepresentation.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 vtkOpenVRPanelRepresentation_h
#define vtkOpenVRPanelRepresentation_h
 
#include "vtkRenderingOpenVRModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
#include <string> // for ivar
 
class vtkPicker;
class vtkTextActor3D;
 
class VTKRENDERINGOPENVR_EXPORT vtkOpenVRPanelRepresentation : public vtkWidgetRepresentation
{
public:
  static vtkOpenVRPanelRepresentation* New();
 
 
  vtkTypeMacro(vtkOpenVRPanelRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  // Enums define the state of the representation relative to the mouse pointer
  // position. Used by ComputeInteractionState() to communicate with the
  // widget. Note that ComputeInteractionState() and several other methods
  // must be implemented by subclasses.
  enum _InteractionState
  {
    Outside = 0,
    Moving
  };
 
 
  void BuildRepresentation() override;
  void PlaceWidget(double bounds[6]) override;
  void StartComplexInteraction(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata) override;
  void ComplexInteraction(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata) override;
  int ComputeComplexInteractionState(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata, int modify = 0) override;
  void EndComplexInteraction(vtkRenderWindowInteractor* iren, vtkAbstractWidget* widget,
    unsigned long event, void* calldata) override;
 
  // Place the widget with a few more options
  // This method allows you to place the panel
  // and provides more options so that you can get
  // the exact positioning you want.
  // Bounds are the bounds that you want the panel to
  // fit within. For World coordinates they should be in
  // world coordinates. For all others they should be in
  // physical meters relative to the HMD or controller origin.
  // The normal is the direction the planel should face.
  // The coordinate system for the controller is X right
  // Y up and Z towards the handle. Upvec specifies the
  // vector to use as up for the panel. Note that upvec
  // has priority over normal, if they are not orthogonal
  // normal will be modified to be orthogonal to upvec.
  // Scale is the physical scale from the RenderWindow
  // and is used to position/scale the panel correctly.
  //
  // Note that you should set the Text on the panel
  // before calling this method as the positioning
  // and scaling is done based on the current text.
  //
  // All vectors will be normalized prior to use.
  void PlaceWidgetExtended(
    const double* bounds, const double* normal, const double* upvec, double scale);
 
 
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
 
  void SetText(const char* str);
 
  // allow access to the underlying text actor
  // so that properties can be set
  vtkGetObjectMacro(TextActor, vtkTextActor3D);
 
  // Set the coordinate system to use for this prop
  void SetCoordinateSystemToWorld();
  void SetCoordinateSystemToHMD();
  void SetCoordinateSystemToLeftController();
  void SetCoordinateSystemToRightController();
 
 
  vtkSetMacro(AllowAdjustment, bool);
  vtkGetMacro(AllowAdjustment, bool);
  vtkBooleanMacro(AllowAdjustment, bool);
 
protected:
  vtkOpenVRPanelRepresentation();
  ~vtkOpenVRPanelRepresentation() override;
 
  // Keep track of event positions
  double LastEventPosition[3];
  double LastEventOrientation[4];
  double StartEventOrientation[4];
 
  double LastScale;
 
  bool AllowAdjustment;
 
  void UpdatePose(double* p1, double* d1, double* p2, double* d2);
 
  void ComputeMatrix(vtkRenderer* ren);
 
  enum CoordinateSystems
  {
    World = 0,
    HMD = 1,
    LeftController = 2,
    RightController = 3,
  };
 
  CoordinateSystems CoordinateSystem;
 
  // The text
  vtkTextActor3D* TextActor;
  std::string Text;
 
private:
  vtkOpenVRPanelRepresentation(const vtkOpenVRPanelRepresentation&) = delete;
  void operator=(const vtkOpenVRPanelRepresentation&) = delete;
};
 
#endif