C:/Projekte/C++/FlowVIS_107/src/Arrows.h

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#ifndef ARROWS_H_
#define ARROWS_H_

#include "common.h"
#include "FlowData.h"
#include "Shader.h"
#include <QObject>
#include <QWidget>
#include <QColor>

class Arrows : public QObject
{
        Q_OBJECT
public:
        Arrows(QWidget* parent = 0);
        virtual ~Arrows();

  void draw();
  void setFlowData(FlowData* data);

  // nk - active background for arrow size coding
  void setActiveBackground(int bg);

public slots:
  void setResolution(int res);
  void setPointSize(int size);

  // nk - enable/disable point scale coding
  void setActivePointScale(bool ps);

  // nk - change color of arrows
  void setColor();

private:
  FlowData* m_flowData;
  FlowGeometry* m_geom;

  // point size (connected with UI)
  float m_pointSize;

  int m_resolution;

  // nk - background used for arrow scale coding
  FlowChannel* m_backgroundData;


  GLuint m_glyphTexID;

  // point Sprite shader
  Shader* m_psShader;

  int m_dataDimX, m_dataDimY;

  // nk - pointer to OpenGLWidget (parent)
  QWidget* m_parent;

  GLint m_spriteTexLoc;
  GLint m_angleLoc;

  QColor m_arrowColor;

  bool m_scalePoints;

};
#endif

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