GreatCircles.h

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// -*- c-basic-offset: 4 -*-
#ifndef GREATCIRCLES_H
#define GREATCIRCLES_H

#include "ViewState.h"
#include <vector>
#include <hugin_math/hugin_math.h>

class GreatCircles
{
public:
    GreatCircles();
    void setVisualizationState(VisualizationState * visualizationState);
    void drawLineFromSpherical(double startLat, double startLong,
                               double endLat, double endLong, double width = 1.0, bool straightLine = false);
private:
    VisualizationState * m_visualizationState;
};

class GreatCircleArc
{
    public:
        GreatCircleArc();
        GreatCircleArc(double startLat, double startLong,
                       double endLat, double endLong,
                       VisualizationState & m_visualizationState);
        void draw(bool withCross=true, double width = 1.0) const;
        float squareDistance(hugin_utils::FDiff2D point) const;
                double m_xscale ;
                double getxscale() const;

        struct LineSegment
        {
            hugin_utils::FDiff2D vertices[2];
            float squareDistance(hugin_utils::FDiff2D point) const;
                        void doGLcross(int point, double cscale, VisualizationState *state) const;
            void doGL(double width, VisualizationState *state, LineSegment * preceding = NULL, LineSegment * proceeding = NULL) const;
        };

    protected:
        std::vector<LineSegment> m_lines;
        VisualizationState * m_visualizationState;
                
};

class StraightLineFromSphericals : public GreatCircleArc
{
public:
    StraightLineFromSphericals(double startLat, double startLong,
        double endLat, double endLong,
        VisualizationState& m_visualizationState);
};

#endif