// Filename: lvector3_src.h
// Created by:  drose (24Sep99)
//
////////////////////////////////////////////////////////////////////
//
// 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."
//
////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////
//       Class : LVector3
// Description : This is a three-component vector distance (as opposed
//               to a three-component point, which represents a
//               particular point in space).  Some of the methods are
//               slightly different between LPoint3 and LVector3; in
//               particular, subtraction of two points yields a
//               vector, while addition of a vector and a point yields
//               a point.
////////////////////////////////////////////////////////////////////
class EXPCL_PANDA_LINMATH FLOATNAME(LVector3) : public FLOATNAME(LVecBase3) {
PUBLISHED:
  INLINE_LINMATH FLOATNAME(LVector3)();
  INLINE_LINMATH FLOATNAME(LVector3)(const FLOATNAME(LVecBase3) &copy);
  INLINE_LINMATH FLOATNAME(LVector3) &operator = (const FLOATNAME(LVecBase3) &copy);
  INLINE_LINMATH FLOATNAME(LVector3) &operator = (FLOATTYPE fill_value);
  INLINE_LINMATH FLOATNAME(LVector3)(FLOATTYPE fill_value);
  INLINE_LINMATH FLOATNAME(LVector3)(FLOATTYPE x, FLOATTYPE y, FLOATTYPE z);
  INLINE_LINMATH FLOATNAME(LVector3)(const FLOATNAME(LVecBase2) &copy, FLOATTYPE z);

  EXTENSION(INLINE_LINMATH PyObject *__getattr__(PyObject *self, const string &attr_name) const);
  EXTENSION(INLINE_LINMATH int __setattr__(PyObject *self, const string &attr_name, PyObject *assign));

  INLINE_LINMATH static const FLOATNAME(LVector3) &zero();
  INLINE_LINMATH static const FLOATNAME(LVector3) &unit_x();
  INLINE_LINMATH static const FLOATNAME(LVector3) &unit_y();
  INLINE_LINMATH static const FLOATNAME(LVector3) &unit_z();

  INLINE_LINMATH FLOATNAME(LVector2) get_xy() const;
  INLINE_LINMATH FLOATNAME(LVector2) get_xz() const;
  INLINE_LINMATH FLOATNAME(LVector2) get_yz() const;

  INLINE_LINMATH FLOATNAME(LVector3) operator - () const;

  INLINE_LINMATH FLOATNAME(LVecBase3) operator + (const FLOATNAME(LVecBase3) &other) const;
  INLINE_LINMATH FLOATNAME(LVector3) operator + (const FLOATNAME(LVector3) &other) const;

  INLINE_LINMATH FLOATNAME(LVecBase3) operator - (const FLOATNAME(LVecBase3) &other) const;
  INLINE_LINMATH FLOATNAME(LVector3) operator - (const FLOATNAME(LVector3) &other) const;

  INLINE_LINMATH FLOATNAME(LVector3) cross(const FLOATNAME(LVecBase3) &other) const;

#ifndef FLOATTYPE_IS_INT
  INLINE_LINMATH FLOATNAME(LVector3) project(const FLOATNAME(LVecBase3) &onto) const;
  INLINE_LINMATH FLOATTYPE angle_rad(const FLOATNAME(LVector3) &other) const;
  INLINE_LINMATH FLOATTYPE angle_deg(const FLOATNAME(LVector3) &other) const;

  INLINE_LINMATH FLOATTYPE signed_angle_rad(const FLOATNAME(LVector3) &other,
                                            const FLOATNAME(LVector3) &ref) const;
  INLINE_LINMATH FLOATTYPE signed_angle_deg(const FLOATNAME(LVector3) &other,
                                            const FLOATNAME(LVector3) &ref) const;

  INLINE_LINMATH FLOATTYPE relative_angle_rad(const FLOATNAME(LVector3) &other) const;
  INLINE_LINMATH FLOATTYPE relative_angle_deg(const FLOATNAME(LVector3) &other) const;
#endif

  INLINE_LINMATH FLOATNAME(LVector3) operator * (FLOATTYPE scalar) const;
  INLINE_LINMATH FLOATNAME(LVector3) operator / (FLOATTYPE scalar) const;

  // Some special named constructors for LVector3.

  INLINE_LINMATH static FLOATNAME(LVector3) up(CoordinateSystem cs = CS_default);
  INLINE_LINMATH static FLOATNAME(LVector3) right(CoordinateSystem cs = CS_default);
  INLINE_LINMATH static FLOATNAME(LVector3) forward(CoordinateSystem cs = CS_default);

  INLINE_LINMATH static FLOATNAME(LVector3) down(CoordinateSystem cs = CS_default);
  INLINE_LINMATH static FLOATNAME(LVector3) left(CoordinateSystem cs = CS_default);
  INLINE_LINMATH static FLOATNAME(LVector3) back(CoordinateSystem cs = CS_default);

//  INLINE_LINMATH static FLOATNAME(LVector3) & rfu(FLOATTYPE right,
  INLINE_LINMATH static FLOATNAME(LVector3) rfu(FLOATTYPE right,
                                        FLOATTYPE fwd,FLOATTYPE up,     CoordinateSystem cs = CS_default);

  EXTENSION(INLINE_LINMATH string __repr__() const);

public:
  static TypeHandle get_class_type() {
    return _type_handle;
  }
  static void init_type();

private:
  static TypeHandle _type_handle;
};

#include "lvector3_src.I"