src/renderer/renderer.h

#ifndef RENDERER_H
#define RENDERER_H

#include <GL/glew.h>
#include <FlowData.h>

#include <Shader.h>
#include "streamgrid.h"

#include <vector>

class Renderer
{
public:
    Renderer();
    virtual ~Renderer();

    void initialize();
    void resize(int w, int h);
    void render();
    void update();
    void setData(int);
    void setCurrentChannel(int);
    void setColor(int, const QColor&);
    void setStepsize(int);
    void setDSep(int);
    void setDTest(float);
    void setShowArrows(bool);
    void setShowStreamlines(bool);
    void setRenderArrowGlyphs(bool val);
    void setUseRungeKutta(bool val);
private:
    FlowData* dataset;
    int loadedData;
    static Renderer* m_instance;
    int m_currentChannel;

    int dSep;
    int newDSep;
    float dTest;
    float newDTest;
    bool newUseRungeKutta;
    bool useRungeKutta;
    float stepSize;
    float newStepSize;

    bool showArrows;
    bool showStreamlines;
    bool mustRenderStreamlines;
    bool renderArrowGlyphs;

    GLuint fbo_lines, line_tex;

    StreamGrid* streamgrid;

    // Shaders
    Shader* colorShader;
    Shader* colorLegend;

    GLuint width;
    GLuint height;

    void renderStreamlines(void);

    void checkGLFeatures();
};

#endif // RENDERER_H