cxCameraStyleForView.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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#ifndef CXCameraStyleForViewFORVIEW_H
#define CXCameraStyleForViewFORVIEW_H

#include "org_custusx_core_view_Export.h"

#include "cxTransform3D.h"
#include "cxForwardDeclarations.h"
#include "cxEnumConverter.h"
#include "cxViewService.h"
#include "cxViewGroupData.h"
#include "cxRegionOfInterestMetric.h"
#include "cxDoubleRange.h"
class QIcon;
class QWidget;
class QMenu;
class QActionGroup;
class vtkInteractorStyle;

namespace cx
{
typedef boost::shared_ptr<class ViewportPreRenderListener> ViewportPreRenderListenerPtr;
typedef boost::shared_ptr<class CoreServices> CoreServicesPtr;

typedef boost::shared_ptr<class CameraStyleForView> CameraStyleForViewPtr;
using cx::Transform3D;

class JitterFilter
{
public:
        JitterFilter();
        double newValue(double value);
private:
        DoubleRange range;
        double currentValue;
};

struct CameraInfo
{
        CameraInfo() {}
        explicit CameraInfo(vtkCameraPtr camera);
        double distance() const { return (pos-focus).length(); }
        Vector3D vpn() const { return (pos-focus).normal(); }

        Vector3D pos;
        Vector3D focus;
        Vector3D vup;
        double viewAngle; // vtk View angle in DEGREES
};

bool similar(const CameraInfo& lhs, const CameraInfo& rhs, double tol=1.0E-6);

class org_custusx_core_view_EXPORT CameraStyleForView: public QObject
{
Q_OBJECT
public:
        explicit CameraStyleForView(CoreServicesPtr backend);
        void setView(ViewPtr widget);

        void setCameraStyle(CameraStyleData style);
        CameraStyleData getCameraStyle();

private slots:
        void setModified();
        void activeToolChangedSlot();

private:
        ViewPtr getView() const;
        vtkRendererPtr getRenderer() const;
        vtkCameraPtr getCamera() const;
        ToolRep3DPtr getToolRep() const;
        bool isToolFollowingStyle() const;
        void onPreRender();
        void applyCameraStyle(); 

        void connectTool();
        void disconnectTool();
        void viewportChangedSlot();
        RegionOfInterest getROI(QString uid) const;
        void setInteractor(vtkSmartPointer<vtkInteractorStyle> style);

        CameraStyleData mStyle; 
        ToolPtr mFollowingTool; 
        ViewportListenerPtr mViewportListener;
        ViewportPreRenderListenerPtr mPreRenderListener;
        bool mBlockCameraUpdate; 
        ViewPtr mView;
        CoreServicesPtr mBackend;

//      Vector3D mPreviousZoomCameraPos;
        JitterFilter mZoomJitterFilter;

        Vector3D smoothZoomedCameraPosition(Vector3D pos);
        void handleLights();
        CameraInfo viewEntireAutoZoomROI(CameraInfo info);
        void updateCamera(CameraInfo info);
        Vector3D getToolTip_r();
        Transform3D get_rMto();
};

} //namespace cx

#endif // CXCameraStyleForViewFORVIEW_H