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# DirectionalLight.cpp

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    00001 //------------------------------------------------------------------------------
    00002 // Lamp : Open source game middleware
    00003 // Copyright (C) 2004  Junpei Ohtani ( Email : junpee@users.sourceforge.jp )
    00004 //
    00005 // This library is free software; you can redistribute it and/or
    00006 // modify it under the terms of the GNU Lesser General Public
    00007 // License as published by the Free Software Foundation; either
    00008 // version 2.1 of the License, or (at your option) any later version.
    00009 //
    00010 // This library is distributed in the hope that it will be useful,
    00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013 // Lesser General Public License for more details.
    00014 //
    00015 // You should have received a copy of the GNU Lesser General Public
    00016 // License along with this library; if not, write to the Free Software
    00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00018 //------------------------------------------------------------------------------
    00019
    00020 /** @file
    00021  * ディレクショナルライト実装
    00022  * @author Junpee
    00023  */
    00024
    00025 #include "LampBasic.h"
    00026 #include "Graphics/Light/DirectionalLight.h"
    00027 #include "Graphics/Scene/Scene.h"
    00028 #include "Graphics/Light/LightManager.h"
    00029
    00030 namespace Lamp{
    00031
    00032 //------------------------------------------------------------------------------
    00033 // コンストラクタ
    00034 DirectionalLight::DirectionalLight(const String& name, Scene* scene) :
    00035     GlobalLight(name, scene), diffuseColor_(Color3f::white),
    00036     specularColor_(Color3f::white), direction_(0.f, -1.f, 0.f),
    00037     worldDirection_(0.f, -1.f, 0.f){
    00038 }
    00039 //------------------------------------------------------------------------------
    00040 // デストラクタ
    00041 DirectionalLight::~DirectionalLight(){
    00042 }
    00043 //------------------------------------------------------------------------------
    00044 // ディレクショナルライトのコピー
    00045 DirectionalLight* DirectionalLight::copyDirectionalLight() const{
    00046     LightManager* manager = scene_->getLightManager();
    00047     DirectionalLight* copyLight =
    00048         manager->createDirectionalLight(manager->rename(name_));
    00049     // ライトの値コピー
    00050     copyLightValue(copyLight);
    00051     // メンバのコピー
    00052     copyLight->setDiffuseColor(diffuseColor_);
    00053     copyLight->setSpecularColor(specularColor_);
    00054     copyLight->setDirection(direction_);
    00055     return copyLight;
    00056 }
    00057 //------------------------------------------------------------------------------
    00058 // 走査
    00059 void DirectionalLight::traverse(const Matrix34& parentMatrix,
    00060     bool parentEnabled, bool parentScaled, bool parentChanged){
    00061     Light::traverse(parentMatrix, parentEnabled, parentScaled, parentChanged);
    00062     // ワールドの方向算出
    00063     worldDirection_ = parentMatrix.multiply33(direction_);
    00064     // ライトに対するスケールの判断微妙。Assert(false);で止めたほうがいいかも
    00065     if(parentScaled){ worldDirection_.normalize(); }
    00066     Assert(worldDirection_.isUnit());
    00067 }
    00068 //------------------------------------------------------------------------------
    00069 } // End of namespace Lamp
    00070 //------------------------------------------------------------------------------