/*##############################################################################
## Author: Shaun Reed                                                         ##
## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
## About: Fly camera class from tutorials followed at trentreed.net           ##
##                                                                            ##
## Contact: shaunrd0@gmail.com	| URL: www.shaunreed.com | GitHub: shaunrd0   ##
##############################################################################*/

#include <camera3d.h>


const QVector3D Camera3D::LocalForward(0.0f, 0.0f, -1.0f);
const QVector3D Camera3D::LocalUp(0.0f, 1.0f, 0.0f);
const QVector3D Camera3D::LocalRight(1.0f, 0.0f, 0.0f);


/*******************************************************************************
 * Accessors
 ******************************************************************************/

// Produces worldToView matrix
const QMatrix4x4 & Camera3D::toMatrix()
{
  mWorld.setToIdentity();
  // Qt6 renamed QMatrix4x4::conjugate() to conjugated()
  mWorld.rotate(mTransform.rotation().conjugated());
  mWorld.translate(-mTransform.translation());
  return mWorld;
}


/*******************************************************************************
 * Qt Streams
 ******************************************************************************/

QDataStream & operator<<(QDataStream & out, Camera3D & transform)
{
  out << transform.transform();
  return out;
}

QDataStream & operator>>(QDataStream & in, Camera3D & transform)
{
  in >> transform.transform();
  return in;
}

QDebug operator<<(QDebug dbg, const Camera3D & transform)
{
  dbg << "Camera3D\n{\n";
  dbg << "Position: <" << transform.translation().x() << ", "
      << transform.translation().y() << ", "
      << transform.translation().z() << ">\n";
  dbg << "Rotation: <" << transform.rotation().x() << ", "
      << transform.rotation().y() << ", "
      << transform.rotation().z() << " | "
      << transform.rotation().scalar() << ">\n}";
  return dbg;
}