105 lines
5.8 KiB
C++
105 lines
5.8 KiB
C++
#ifndef HGL_GRAPH_SCENE_NODE_INCLUDE
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#define HGL_GRAPH_SCENE_NODE_INCLUDE
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#include<hgl/type/List.h>
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#include<hgl/graph/SceneOrient.h>
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namespace hgl
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{
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namespace graph
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{
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class SceneNode;
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struct Camera;
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class Frustum;
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class Renderable;
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typedef List<const SceneNode *> RenderList; ///<渲染列表类型重定义
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typedef float (*RenderListCompFunc)(Camera *,SceneNode *,SceneNode *); ///<渲染列表排序比较函数
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float CameraLengthComp(Camera *,SceneNode *,SceneNode *); ///<摄像机距离比较函数
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typedef bool (*FilterSceneNodeFunc)(const SceneNode *,void *); ///<场景节点过滤函数重定义
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bool FrustumClipFilter(const SceneNode *,void *); ///<平截头截减过滤函数
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/**
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* 场景节点数据类<br>
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* 从场景坐标变换(SceneOrient)类继承
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*/
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class SceneNode:public SceneOrient ///场景节点类
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{
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protected:
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AABB BoundingBox; ///<绑定盒
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// AABB LocalBoundingBox; ///<本地坐标绑定盒
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// AABB WorldBoundingBox; ///<世界坐标绑定盒
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Vector3f Center; ///<中心点
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Vector3f LocalCenter; ///<本地坐标中心点
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Vector3f WorldCenter; ///<世界坐标中心点
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public:
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List<Renderable *> SubData; ///<可渲染数据
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ObjectList<SceneNode> SubNode; ///<子节点
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public:
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SceneNode()=default;
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virtual ~SceneNode()
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{
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ClearSubNode();
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ClearRenderable();
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}
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void Add(Renderable *r){if(r)SubData.Add(r);} ///<增加一个可渲染数据
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void ClearRenderable(){SubData.Clear();} ///<清除可渲染数据
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void AddSubNode(SceneNode *n){if(n)SubNode.Add(n);} ///<增加一个子节点
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SceneNode * CreateSubNode() ///<创建一个子节点
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{
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SceneNode *sn=new SceneNode();
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SubNode.Add(sn);
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return sn;
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}
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SceneNode * AddSubNode(Renderable *r,const Matrix4f &m)
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{
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if(!r)return(nullptr);
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SceneNode *sn=CreateSubNode();
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sn->Add(r);
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sn->SetLocalMatrix(m);
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return sn;
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}
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void ClearSubNode(){SubNode.Clear();} ///<清除子节点
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public: //坐标相关方法
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virtual void SetBoundingBox (const AABB &bb){BoundingBox=bb;} ///<设置绑定盒
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virtual void RefreshMatrix (const Matrix4f *mat=nullptr); ///<刷新世界变换矩阵
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virtual void RefreshBoundingBox (); ///<刷新绑定盒
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virtual const AABB & GetBoundingBox ()const{return BoundingBox;} ///<取得绑定盒
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// virtual const AABB & GetLocalBoundingBox ()const{return LocalBoundingBox;} ///<取得本地坐标绑定盒
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// virtual const AABB & GetWorldBoundingBox ()const{return WorldBoundingBox;} ///<取得世界坐标绑定盒
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virtual const Vector3f & GetCenter ()const{return Center;} ///<取得中心点
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virtual const Vector3f & GetLocalCenter ()const{return LocalCenter;} ///<取得本地坐标中心点
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virtual const Vector3f & GetWorldCenter ()const{return WorldCenter;} ///<取得世界坐标中心点
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public: //渲染列表相关方法
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virtual bool ExpendToList(RenderList *,FilterSceneNodeFunc func=nullptr,void *func_data=nullptr)const; ///<展开到渲染列表
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bool ExpendToList(RenderList *rl,Frustum *f)const ///<展开到渲染列表(使用平截头裁剪)
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{return ExpendToList(rl,FrustumClipFilter,f);}
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bool ExpendToList(RenderList *,const Matrix4f &,const Matrix4f &,RenderListCompFunc=nullptr)const; ///<展开到渲染列表(使用平截头裁剪并排序)
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bool ExpendToList(RenderList *,Camera *,RenderListCompFunc=nullptr)const; ///<展开到渲染列表(使用摄像机平截头裁剪并排序)
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};//class SceneNode
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_SCENE_NODE_INCLUDE
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