SO3Engine/SO3SceneGraph/SO3Moon.cpp

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/*
-----------------------------------------------------------------------------
This source file is part of OpenSpace3D
For the latest info, see http://www.openspace3d.com

Copyright (c) 2010 I-maginer

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt

You may alternatively use this source under the terms of a specific version of
the OpenSpace3D Unrestricted License provided you have obtained such a license from
I-maginer.
-----------------------------------------------------------------------------
*/

#include "SO3Moon.h"
#include "SO3Environment.h"

namespace SO3
{

SMoon::SMoon(SEnvironment* parent, std::string moonName) : SSkyLight(parent, moonName)
{
  moonPhase = 0.0f;
  moonTextureName = "SkyX_Moon.png";
}

SMoon::SMoon() : SSkyLight(0, "")
{
  // Forbiden (private)
}

SMoon::~SMoon()
{
}

const Ogre::Real SMoon::GetPhase()
{
  return moonPhase;
}

const Ogre::Vector3 SMoon::ComputeDirectionImpl(double julianDay)
{
  // Compute the moon phase too
  SAstronomy::GetMoonPhase(julianDay, moonPhase);

  // Compute the moon light direcion
  return GetMoonDirection(julianDay);
}

const Ogre::Vector3 SMoon::GetMoonDirection(double jday)
{
  Ogre::Degree azimuth, altitude;
  {
    ScopedHighPrecissionFloatSwitch precisionSwitch;
    SAstronomy::GetHorizontalMoonPosition(jday, parentEnvironment->GetLongitude(), parentEnvironment->GetLatitude(), azimuth, altitude);
  }     
  Ogre::Vector3 res = MakeDirection(azimuth, altitude);
  return res;
}

std::string SMoon::GetTextureName()
{
  return moonTextureName;
}

void SMoon::SetTextureName(std::string newTextureName)
{
  moonTextureName = newTextureName;
}

}

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