/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file eggNurbsCurve.h
 * @author drose
 * @date 2000-02-15
 */

#ifndef EGGNURBSCURVE_H
#define EGGNURBSCURVE_H

#include "pandabase.h"

#include "eggCurve.h"

#include "vector_double.h"

/**
 * A parametric NURBS curve.
 */
class EXPCL_PANDA_EGG EggNurbsCurve : public EggCurve {
PUBLISHED:
  INLINE explicit EggNurbsCurve(const std::string &name = "");
  INLINE EggNurbsCurve(const EggNurbsCurve &copy);
  INLINE EggNurbsCurve &operator = (const EggNurbsCurve &copy);

  virtual EggNurbsCurve *make_copy() const override;

  void setup(int order, int num_knots);

  INLINE void set_order(int order);
  void set_num_knots(int num);

  INLINE void set_knot(int k, double value);

  bool is_valid() const;

  INLINE int get_order() const;
  INLINE int get_degree() const;
  INLINE int get_num_knots() const;
  INLINE int get_num_cvs() const;

  bool is_closed() const;

  INLINE double get_knot(int k) const;
  MAKE_SEQ(get_knots, get_num_knots, get_knot);

  virtual void write(std::ostream &out, int indent_level) const override;

  MAKE_PROPERTY(order, get_order, set_order);
  MAKE_PROPERTY(degree, get_degree);
  MAKE_PROPERTY(closed, is_closed);
  MAKE_SEQ_PROPERTY(knots, get_num_knots, get_knot, set_knot);

private:
  typedef vector_double Knots;
  Knots _knots;
  int _order;

public:

  static TypeHandle get_class_type() {
    return _type_handle;
  }
  static void init_type() {
    EggCurve::init_type();
    register_type(_type_handle, "EggNurbsCurve",
                  EggCurve::get_class_type());
  }
  virtual TypeHandle get_type() const override {
    return get_class_type();
  }
  virtual TypeHandle force_init_type() override {
    init_type();
    return get_class_type();
  }

private:
  static TypeHandle _type_handle;

};

#include "eggNurbsCurve.I"

#endif