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ViewListenerWithArrows.h

Go to the documentation of this file.

#ifndef Impala_Visualization_ViewListenerWithArrows_h
#define Impala_Visualization_ViewListenerWithArrows_h

#include "Visualization/View.h"
#include "Core/Geometry/ArrowRList.h"

namespace Impala
{
namespace Visualization
{


class ViewListenerWithArrows : public OglGui::ViewListener
{
public:

    // elements in list denote centre of circles, in image coordinates
    // so view should contain an image!
    ViewListenerWithArrows(Core::Geometry::ArrowRList* aList,
                           ULONG color = oglRED)
    {
        mAList = aList;
        mColor = color;
    }

    virtual void
    OnDrawView(OglGui::View* view)
    {
        if (mAList->size() == 0)
            return;

        OGLIMAGE* oglIm = view->GetOGLIMAGE();
        if (!oglIm)
            return;

        OGC ogc;
        OGCSave(&ogc);
        glPushMatrix();

        viewSys.View2DImageTransform(view->GetOGLVIEW2D());
        SetSolidLineColor(mColor);
        SetLineWidth(1);
        for (Core::Geometry::ArrowRListCI a=mAList->begin() ; a!=mAList->end() ; a++)
        {
            DrawLine(a->mPX, oglIm->h - a->mPY, a->HeadX(), oglIm->h - a->HeadY());
            DrawLine(a->HeadX(), oglIm->h - a->HeadY(),
                     a->HeadLeftX(), oglIm->h - a->HeadLeftY());
            DrawLine(a->HeadX(), oglIm->h - a->HeadY(),
                     a->HeadRightX(), oglIm->h - a->HeadRightY());
        }
        glPopMatrix();
        OGCRestore(&ogc);
    }

private:

    Core::Geometry::ArrowRList* mAList;
    ULONG                       mColor;

};

} // namespace Visualization
} // namespace Impala

#endif

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