KeosLight.cpp

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/*
 * This source file is part of KEOS (Free 3D Engine)
 * For the latest info, see http://www.keosengine.org/
 * E-mails : thierry.vouriot@keosengine.org, yeri@keosengine.org
 *
 * 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.
 *
 */

#include "KeosLight.h"
#include "KeosUtil.h"

namespace Keos
{
  //=======================================================================
  // CLight implementation
  //=======================================================================

  //-----------------------------------------------------------------------
  CLight::CLight()
  {
    // Default to point light, white diffuse light, linear attenuation, fair range
    m_nLightType = LT_POINT;
    m_Diffuse = CColor::White;
    m_Specular = CColor::Black;

    m_Range = 5000;
    m_AttenuationConst = 1.0f;
    m_AttenuationLinear = 0.0f;
    m_AttenuationQuad = 0.0f;

    m_SpotOuter = CRadian(CDegree(40.0f));
    m_SpotInner = CRadian(CDegree(30.0f));
    m_SpotFalloff = 1.0f;

    // Center in world, direction irrelevant but set anyway
    m_Position = TVector3F(0.0f, 0.0f, 0.0f);
    m_Direction = TVector3F(0.0f, 0.0f, 1.0f);
  }

  //-----------------------------------------------------------------------
  CLight::~CLight()
  {}

  //-----------------------------------------------------------------------
  void CLight::SetType(TLightType nType)
  {
    m_nLightType = nType;
  }

  //-----------------------------------------------------------------------
  CLight::TLightType CLight::GetType(void) const
  {
    return m_nLightType;
  }

  //-----------------------------------------------------------------------
  void CLight::SetPosition(float x, float y, float z)
  {
    m_Position.x = x;
    m_Position.y = y;
    m_Position.z = z;
  }

  //-----------------------------------------------------------------------
  void CLight::SetPosition(const TVector3F& Vec)
  {
    m_Position = Vec;
  }

  //-----------------------------------------------------------------------
  const TVector3F& CLight::GetPosition(void) const
  {
    return m_Position;
  }

  //-----------------------------------------------------------------------
  void CLight::SetDirection(float x, float y, float z)
  {
    m_Direction.x = x;
    m_Direction.y = y;
    m_Direction.z = z;
  }

  //-----------------------------------------------------------------------
  void CLight::SetDirection(const TVector3F& Vec)
  {
    m_Direction = Vec;
  }

  //-----------------------------------------------------------------------
  const TVector3F& CLight::GetDirection(void) const
  {
    return m_Direction;
  }

  //-----------------------------------------------------------------------
  void CLight::SetDiffuseColor(float fRed, float fGreen, float fBlue)
  {
    m_Diffuse.SetFloats(fRed, fBlue, fGreen);
  }

  //-----------------------------------------------------------------------
  void CLight::SetDiffuseColor(const CColor& Color)
  {
    m_Diffuse = Color;
  }

  //-----------------------------------------------------------------------
  const CColor& CLight::GetDiffuseColor(void) const
  {
    return m_Diffuse;
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpecularColor(float fRed, float fGreen, float fBlue)
  {
    m_Specular.SetFloats(fRed, fBlue, fGreen);
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpecularColor(const CColor& Color)
  {
    m_Specular = Color;
  }

  //-----------------------------------------------------------------------
  const CColor& CLight::GetSpecularColor(void) const
  {
    return m_Specular;
  }

  //-----------------------------------------------------------------------
  void CLight::SetAttenuation(Real range, Real constant,
                              Real linear, Real quadratic)
  {
    m_Range = range;
    m_AttenuationConst = constant;
    m_AttenuationLinear = linear;
    m_AttenuationQuad = quadratic;
  }

  //-----------------------------------------------------------------------
  Real CLight::GetAttenuationRange(void) const
  {
    return m_Range;
  }

  //-----------------------------------------------------------------------
  Real CLight::GetAttenuationConstant(void) const
  {
    return m_AttenuationConst;
  }

  //-----------------------------------------------------------------------
  Real CLight::GetAttenuationLinear(void) const
  {
    return m_AttenuationLinear;
  }

  //-----------------------------------------------------------------------
  Real CLight::GetAttenuationQuadric(void) const
  {
    return m_AttenuationQuad;
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpotRange(const CRadian& innerAngle, const CRadian& outerAngle, Real falloff)
  {
    m_SpotInner = innerAngle;
    m_SpotOuter = outerAngle;
    m_SpotFalloff = falloff;
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpotInnerAngle(const CRadian& val)
  {
    m_SpotInner = val;
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpotOuterAngle(const CRadian& val)
  {
    m_SpotOuter = val;
  }

  //-----------------------------------------------------------------------
  void CLight::SetSpotFalloff(Real val)
  {
    m_SpotFalloff = val;
  }

  //-----------------------------------------------------------------------
  const CRadian& CLight::GetSpotInnerAngle(void) const
  {
    return m_SpotInner;
  }

  //-----------------------------------------------------------------------
  const CRadian& CLight::GetSpotOuterAngle(void) const
  {
    return m_SpotOuter;
  }

  //-----------------------------------------------------------------------
  Real CLight::GetSpotFalloff(void) const
  {
    return m_SpotFalloff;
  }

} // namespace Keos

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