ComparisonGrid.h

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#ifndef GlobeEngine_ComparisonGrid_h
#define GlobeEngine_ComparisonGrid_h

#include "OpenGL_Includes.h"
#include "Shader.h"
#include "CoordinateSystem.h"

namespace geAstro {

    class ComparisonGrid : public ge::CoordinateSystem
    {
    public:
        void setupGrid(vmml::Vector2d _gridSteps, vmml::Vector2i _numberOfLines);
        void createVAO();
        vmml::Vector2d getGridExtent();
        const std::vector<double>& getGridLineCoordinatesX();
        const std::vector<double>& getGridLineCoordinatesY();
        vmml::Vector2i getNumberOfLines();
    private:
        vmml::Vector2d gridSteps;
        //number of lines excluding origin cross
        vmml::Vector2i numberOfLines;
        vmml::Vector2d gridExtent;
        //needed as single vector as there may be a different number of lines on both axis
        std::vector<double> gridLineCoordinatesX;
        //needed as single vector as there may be a different number of lines on both axis
        std::vector<double> gridLineCoordinatesY;
    };
}
#endif