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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 //------------------------------------------------------------------------------

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