/****************************************************************************
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** This file is part of the examples of the Qt Toolkit.
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#ifndef QTSPLINE_H
#define QTSPLINE_H
#include <QColor>
#include <QObject>
#include <QtOpenGL>
#include <QDebug>


#include <glm/glm.hpp>

namespace Fragmentarium
{
namespace GUI
{

struct Geometry {
    QVector<glm::dvec3> vertices;
    void appendVertex ( const glm::dvec3 &a );
};

class Patch
{
public:
    Patch ( Geometry * );
    void addVertex ( const glm::dvec3 &a );
    GLuint start;
    GLuint count;
    GLfloat pointSize;
    GLfloat color[4];
    Geometry *geom;
};

class QtSpline : public QObject
{
public:
    QtSpline ( QOpenGLWidget *parent, int nctrl = 0, int nsegs = 0, glm::dvec3 *cv = 0, bool loop = false );
    ~QtSpline();

    void setSplineColor ( QColor c ) const;
    void setControlColor ( QColor c ) const;
    glm::vec4 splineColor () const;
    glm::vec4 controlColor () const;

    QVector<glm::dvec3>getControlPoints(){ return parts[0]->geom->vertices; };
    QVector<glm::dvec3>getSplinePoints(){ return parts[1]->geom->vertices; };

    glm::dvec3 getControlPoint ( int n );
    glm::dvec3 getSplinePoint ( int n );
    void setControlPoint ( int n, glm::dvec3 *p );
    void recalc ( int nc, int ns, glm::dvec3 *cv );
    void setLooping ( bool l ){ looping = l; };

private:
    void buildGeometry ( int nctrl, int nsegs, glm::dvec3 *cv );
    QOpenGLWidget *prnt;
    Geometry *geom;
    QList<Patch *> parts;
    int num_c, num_s;
    bool looping;
};
} // namespace GUI

} // namespace Fragmentarium
#endif // QTSPLINE_H
