ui_SceneView.hpp

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#ifndef UI_SCENE_VIEW_HPP
#define UI_SCENE_VIEW_HPP

#include "ui_View.hpp"

#include "ui_SceneRuler.hpp"
#include "transform_Projection.hpp"
#include "transform_LookAt.hpp"
// #include "Scene.hpp"
class Scene; // TODO: instead, include "Scene.hpp"

class SceneView : public View
{
public:
  SceneView(ProjectionType pt);

  // properties:

  void          setScene(Scene* pScene) { mpScene = pScene; }
  void          setDirection(const Vec3d& direction);
  void          setUp(const Vec3d& up);
  void          setCenter(const Vec3d& center);
  const LookAt& getLookAt() const { return mLookAt; }
  LookAt&       getLookAt()       { return mLookAt; }
  
  Projection&   getProjection()   { return mProjection; }

  virtual void  setProjectionViewSize(const Vec2d& size);


  // View overloads:

  virtual void setViewport(const Vec4i& vp);

  // Display:

  virtual void display();

  // Transformation services:

  Point3d unprojectPoint(const Point3d& p);
  Rayd    makeRay(int x, int y);
  Rayd    makeRay(Point2i sp);

  void setProjectionViewWidth(double w); 
  void setProjectionViewHeight(double h); 

  // --- user-input ----------------------------------------------------------

  virtual void mouse(int button, int state, int x, int y);
  virtual void motion(int x, int y);
  virtual void dragBegin() = 0;
  virtual void dragUpdate(const Vec2i& d) = 0;
  virtual void dragEnd() { }

  void setFocusPointVar(Point3d* focusPoint) { mpFocusPoint = focusPoint; }
  void setZoomVar(double* pscalar) { mpZoom = pscalar; }
  void setCameraOffset(const Vec3d& offset) { mCameraOffset = offset; }
protected:
  double getZoom() { return *mpZoom; }
  void   updateEye();
  void   setupLights();

  Scene* mpScene;
  int mDragButton;
  Projection mProjection;
  LookAt mLookAt;
  Vec2i mDragBase;
  Vec3d mCenterBase;
  Vec3d mDirection;
  Point3d* mpFocusPoint;
  double* mpZoom;
  Vec3d  mCameraOffset;

// --- future ----------------------------------------------------------------
public:
  virtual void onEvent(Event& e);
  void captureRayMotion(EventTarget* pTarget);
  void releaseRayMotion();
protected:
  EventTarget* mpCaptureRayMotionTarget;


};

#endif // UI_SCENE_VIEW_HPP