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# DrawRequest.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  * 描画リクエスト実装
    00022  * @author Junpee
    00023  */
    00024
    00025 #include "LampBasic.h"
    00026 #include "Graphics/Renderer/DrawRequest.h"
    00027 #include "Graphics/Renderer/Renderer.h"
    00028 #include "Graphics/SceneNode/SceneNode.h"
    00029 #include "Graphics/Light/AmbientLight.h"
    00030 #include "Graphics/Light/DirectionalLight.h"
    00031 #include "Graphics/Light/PointLight.h"
    00032 #include "Graphics/Model/Model.h"
    00033 #include "Graphics/Mesh/Mesh.h"
    00034 #include "Graphics/Material/Material.h"
    00035
    00036 namespace Lamp{
    00037
    00038 // インスタンス
    00039 DrawRequest* DrawRequest::instance_ = NULL;
    00040
    00041 //------------------------------------------------------------------------------
    00042 // コンストラクタ
    00043 DrawRequest::DrawRequest(){
    00044     clear();
    00045     Assert(instance_ == NULL);
    00046     instance_ = this;
    00047 }
    00048 //------------------------------------------------------------------------------
    00049 // デストラクタ
    00050 DrawRequest::~DrawRequest(){
    00051     Assert(instance_ != NULL);
    00052     instance_ = NULL;
    00053 }
    00054 //------------------------------------------------------------------------------
    00055 // クリア
    00056 void DrawRequest::clear(){
    00057     directionalLights_.clear();
    00058     ambientLights_.clear();
    00059     localLights_.clear();
    00060     fog_ = NULL;
    00061     camera_ = NULL;
    00062     mesh_ = preMesh_ = NULL;
    00063     sceneNode_ = preSceneNode_ = NULL;
    00064     model_ = preModel_ = NULL;
    00065     meshData_ = preMeshData_ = NULL;
    00066     material_ = preMaterial_ = NULL;
    00067 }
    00068 //------------------------------------------------------------------------------
    00069 // メッシュの設定
    00070 void DrawRequest::setMesh(Mesh* mesh){
    00071     Assert(mesh != NULL);
    00072     preMesh_ = mesh_;
    00073     preSceneNode_ = sceneNode_;
    00074     preModel_ = model_;
    00075     preMeshData_ = meshData_;
    00076     preMaterial_ = material_;
    00077     mesh_ = mesh;
    00078     model_ = mesh_->getParent();
    00079     sceneNode_ = model_->getParent();
    00080     meshData_ = mesh_->getMeshData();
    00081     material_ = mesh_->getMaterial();
    00082     Assert(sceneNode_ != NULL);
    00083     Assert(model_ != NULL);
    00084     Assert(meshData_ != NULL);
    00085     Assert(material_ != NULL);
    00086 }
    00087 //------------------------------------------------------------------------------
    00088 // 正規化を必要とするか
    00089 bool DrawRequest::requireNormalize() const{
    00090     // シーンノードにスケールが含まれるなら正規化を行う
    00091     bool result = sceneNode_->isGlobalScaled();
    00092     // メッシュが正規化を必要とするなら正規化を行う
    00093     result |= mesh_->requireNormalize();
    00094     return result;
    00095 }
    00096 //------------------------------------------------------------------------------
    00097 // パイプラインモードに変更があったか
    00098 bool DrawRequest::isPipelineModeChanged() const{
    00099     if(preMaterial_ == NULL){ return true; }
    00100     return (material_->getPipelineMode() !=
    00101         preMaterial_->getPipelineMode());
    00102 }
    00103 //------------------------------------------------------------------------------
    00104 // ブレンドが有効になった
    00105 bool DrawRequest::isBlendEnabled() const{
    00106     Assert(material_ != NULL);
    00107     bool alphaBlend = material_->isBlendEnabled();
    00108     if(preMaterial_ == NULL){
    00109         return alphaBlend;
    00110     }else{
    00111         bool preAlphaBlend = preMaterial_->isBlendEnabled();
    00112         // アルファ状態からアルファでない状態にはならない
    00113         Assert(!(preAlphaBlend && (!alphaBlend)));
    00114         if((!preAlphaBlend) && alphaBlend){ return true; }
    00115     }
    00116     return false;
    00117 }
    00118 //------------------------------------------------------------------------------
    00119 // アンビエントライトの追加
    00120 void DrawRequest::addAmbientLight(AmbientLight* ambientLight){
    00121     Assert(ambientLight->isAmbientLight());
    00122     ambientLights_.add(ambientLight);
    00123 }
    00124 //------------------------------------------------------------------------------
    00125 // アンビエント色の取得
    00126 Color3f DrawRequest::getAmbientColor() const{
    00127     Assert(material_ != NULL);
    00128     u_int lightMask = material_->getLightMask();
    00129     Color3f ambientColor(Color3f::black);
    00130     int ambientLightCount = ambientLights_.getCount();
    00131     for(int i = 0; i < ambientLightCount; i++){
    00132         AmbientLight* ambientLight = ambientLights_.get(i);
    00133         // ライトマスク判定
    00134         if((ambientLight->getLightMask() & lightMask) == 0){ continue; }
    00135         ambientColor += ambientLight->getColor();
    00136     }
    00137     return ambientColor;
    00138 }
    00139 //------------------------------------------------------------------------------
    00140 // ディレクショナルライトの追加
    00141 void DrawRequest::addDirectionalLight(DirectionalLight* directionalLight){
    00142     Assert(directionalLight->isDirectionalLight());
    00143     directionalLights_.add(directionalLight);
    00144 }
    00145 //------------------------------------------------------------------------------
    00146 // ローカルライトの追加
    00147 void DrawRequest::addLocalLight(LocalLight* localLight){
    00148     Assert(localLight->isLocalLight());
    00149     localLights_.add(localLight);
    00150 }
    00151 //------------------------------------------------------------------------------
    00152 // ローカルライトのソート用コールバック
    00153 int DrawRequest::sortLocalLightsCallback(
    00154     LocalLight* const* left, LocalLight* const* right){
    00155     return instance_->sortLocalLightsImprement((*left), (*right));
    00156 }
    00157 //------------------------------------------------------------------------------
    00158 // ローカルライトのソート実装
    00159 int DrawRequest::sortLocalLightsImprement(LocalLight* left, LocalLight* right){
    00160     Assert(mesh_ != NULL);
    00161     // メッシュに近いものから遠いものへソート
    00162     // メッシュ中心に対して最も明るいものでソートしたほうがいい
    00163     // 輝度と減衰(distance - near)/(far - near)をかけたもので
    00164     // LocalLightにgetWorldLuminance()やgetWorldSquaredDistance()
    00165     const Vector3& meshCenter = mesh_->getWorldCenter();
    00166     PointLight* pointLeft = left->castPointLight();
    00167     Assert(pointLeft != NULL);
    00168     PointLight* pointRight = right->castPointLight();
    00169     Assert(pointRight != NULL);
    00170     float leftDistance =
    00171         (pointLeft->getWorldPosition() - meshCenter).getSquaredLength();
    00172     float rightDistance =
    00173         (pointRight->getWorldPosition() - meshCenter).getSquaredLength();
    00174     if((rightDistance - leftDistance) > 0.f){ return -1; }
    00175     else{ return 1; }
    00176 }
    00177 //------------------------------------------------------------------------------
    00178 } // End of namespace Lamp
    00179 //------------------------------------------------------------------------------