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====== XEdge ======

**//Inherited from//**  [[class::domain::xgeometry|XGeometry]],

**//Inherited by//**  NULL

**//Friend class//**  GeometryManager,

**//Description//**

XEdge封装了几何边的数据及其方法，其类型标识名为“CGEOEDGE”(以CGEO为前缀）。几何边由线单元离散构成，在拓扑上一般最多包含2个顶点，也可能只包含一个顶点（闭合边），或者0个顶点（比如一个圆）。XEdge从XGeometry继承并重新实现了适用于边的方法。

**//Members//**
  * XBoundBox [[xedge#m_dboundbox|m_dBoundBox]]
  * const XVertex * [[xedge#m_pendvertex0|m_pEndVertex0]]
  * const XVertex * [[xedge#m_pendvertex1|m_pEndVertex1]]
  * const XNode * [[xedge#m_pfirstnode|m_pFirstNode]]
  * const XNode * [[xedge#m_plastnode|m_pLastNode]]
  * XMemPool * [[xedge#m_phashpool|m_pHashPool]]
  * XItemPtrArray<XGeometry,2> [[xedge#m_upperlist|m_UpperList]]
  * XRenderData [[xedge#m_renderdata|m_RenderData]]
  * XRenderData [[xedge#m_elemencodedata|m_ElemEncodeData]]
  * RGBAColor [[xedge#m_bakcolor|m_BakColor]]
**//Public interface//**
  * [[xedge#xedge1|XEdge]](ulong id,XMemPool * pHashPool = 0)
  * [[xedge#~xedge|~XEdge]]()
  * void [[xedge#updateboundbox|updateBoundbox]]()
  * real [[xedge#getlength|getLength]]() const
  * real [[xedge#getnorm2|getNorm2]]()const
  * bool [[xedge#isclosed|isClosed]]() const
  * const XVertex * [[xedge#getendvertex0|getEndVertex0]]() const
  * const XVertex * [[xedge#getendvertex1|getEndVertex1]]() const
  * ulong [[xedge#getendvertexid0|getEndVertexID0]]() const
  * ulong [[xedge#getendvertexid1|getEndVertexID1]]() const
  * const XNode * [[xedge#getendnode0|getEndNode0]]() const
  * const XNode * [[xedge#getendnode1|getEndNode1]]() const
  * const XGeometry * [[xedge#getupperentity|getUpperEntity]](int index) const
  * bool [[xedge#isupperentity|isUpperEntity]](const XGeometry * pFace)const
  * void [[xedge#addupperentity|addUpperEntity]](const XGeometry * pFace)
  * void [[xedge#removeupperentity|removeUpperEntity]](const XGeometry *pFace)
  * void [[xedge#buildrenderdata_withindex|buildRenderData_WithIndex]](const float * rvalue = NULL)
  * void [[xedge#buildrenderdatafvm|buildRenderDataFVM]]()
  * void [[xedge#buildrenderdata|buildRenderData]]()
  * void [[xedge#updaterenderdata|updateRenderData]](const float * colorValue, int colorLoc, const float * deformX, const float * deformY, const float * deformZ, const int * colorIndex = NULL)
  * const XRenderData * [[xedge#getrenderdata|getRenderData]]() const
  * void [[xedge#clear|clear]](ClearFlag f = Clear_All)
  * const XBoundBox & [[xedge#getboundbox|getBoundBox]]() const
  * void [[xedge#normalizeboundbox|normalizeBoundBox]](const real * origin, real scale)
  * void [[xedge#restoreboundbox|restoreBoundBox]](const real * origin, real scale)
  * void [[xedge#copyboundbox|copyBoundBox]](const XEdge * e)
  * ulong [[xedge#getchildcount|getChildCount]]() const
  * const XGeometry * [[xedge#getchildentity|getChildEntity]](ulong id)const
  * int [[xedge#getuppercount|getUpperCount]]() const
  * void [[xedge#write|write]](XBinaryIO * io)const
  * ErrorCode [[xedge#read|read]](GeometryManager * esmgr, XBinaryIO * io)
  * void [[xedge#updateafterrenumber|updateAfterRenumber]](TypeID tid = DItem_Element)
  * void [[xedge#backupcolor|backupColor]]()
  * void [[xedge#recovercolor|recoverColor]]()
  * void [[xedge#getcenter|getCenter]](real * c) const
  * bool [[xedge#isloop|isLoop]]() const
**//Protected interface//**
  * void [[xedge#attachchildentity|attachChildEntity]](const XGeometry * pEntity)
  * void [[xedge#detachchildentity|detachChildEntity]](ulong id)
  * void [[xedge#setendvertex0|setEndVertex0]](const XVertex * pVertex)
  * void [[xedge#setendvertex1|setEndVertex1]](const XVertex * pVertex)
**//Private interface//**
  * void [[xedge#buildglindex|buildGLIndex]]()
  * void [[xedge#buildvertex|buildVertex]]()

----

{{anchor:m_dboundbox}}
**XBoundBox m_dBoundBox**

几何边的包围盒

{{anchor:m_pendvertex0}}
**const XVertex * m_pEndVertex0**

几何边的第一个端顶点

{{anchor:m_pendvertex1}}
**const XVertex * m_pEndVertex1**

几何边的第二个端顶点

{{anchor:m_pfirstnode}}
**const XNode * m_pFirstNode**

几何边的第一个节点

{{anchor:m_plastnode}}
**const XNode * m_pLastNode**

几何边的最后一个节点

{{anchor:m_phashpool}}
**XMemPool * m_pHashPool**

几何边对象用到的内存池

{{anchor:m_upperlist}}
**XItemPtrArray<XGeometry,2> m_UpperList**

几何边的父拓扑对象数组

{{anchor:m_renderdata}}
**XRenderData m_RenderData**

几何边的视图数据

{{anchor:m_bakcolor}}
**RGBAColor m_BakColor**

几何边的颜色备份，用于修改颜色时保存旧的颜色以方便恢复之前的颜色。

----

{{anchor:xedge1}}
**XEdge(ulong id,XMemPool * pHashPool = 0)**
  *function: 构造函数
  *parameters: 
    - [i]ulong id: 对象ID
    - [i]XMemPool * pHashPool = 0: 内存池
  *return value: 无

{{anchor:~xedge}}
**~XEdge()**
  *function: 析构函数
  *parameters: NULL
  *return value: 无

{{anchor:updateboundbox}}
**void updateBoundbox()**
  *function: 更新几何边的包围盒
  *parameters: NULL
  *return value: 无

{{anchor:getlength}}
**real getLength() const**
  *function: 计算几何边的长度
  *parameters: NULL
  *return value: 几何边的长度

{{anchor:getnorm2}}
**real getNorm2()const**
  *function: 计算几何边的第二范数
  *parameters: NULL
  *return value: 几何边的第二范数

{{anchor:isclosed}}
**bool isClosed() const**
  *function: 判断几何边是否为闭合边
  *parameters: NULL
  *return value: 几何边为闭合边时返回true，否则返回false

{{anchor:getendvertex0}}
**const XVertex * getEndVertex0() const**
  *function: 获取几何边的第一个端顶点
  *parameters: NULL
  *return value: 几何边的第一个端顶点

{{anchor:getendvertex1}}
**const XVertex * getEndVertex1() const**
  *function: 获取几何边的第二个端顶点
  *parameters: NULL
  *return value: 几何边的第二个端顶点

{{anchor:getendvertexid0}}
**ulong getEndVertexID0() const**
  *function: 获取几何边的第一个端顶点ID
  *parameters: NULL
  *return value: 几何边的第一个端顶点ID，如不存在返回0

{{anchor:getendvertexid1}}
**ulong getEndVertexID1() const**
  *function: 获取几何边的第二个端顶点ID
  *parameters: NULL
  *return value: 几何边的第二个端顶点ID，如不存在返回0

{{anchor:getendnode0}}
**const XNode * getEndNode0() const**
  *function: 获取几何边的第一个端顶点所在的节点
  *parameters: NULL
  *return value: 几何边的第一个端顶点所在的节点，如不存在返回0

{{anchor:getendnode1}}
**const XNode * getEndNode1() const**
  *function: 获取几何边的第二个端顶点所在的节点
  *parameters: NULL
  *return value: 几何边的第二个端顶点所在的节点，如不存在返回0

{{anchor:getupperentity}}
**const XGeometry * getUpperEntity(int index) const**
  *function: 重新实现XGeometry的getUpperEntity方法，获取第index个父拓扑对象
  *parameters: 
    - [i]int index: 父拓扑对象序号
  *return value: 父拓扑对象

{{anchor:isupperentity}}
**bool isUpperEntity(const XGeometry * pFace)const **
  *function: 判断pFace是否为几何边对象的父拓扑对象
  *parameters: 
    - [i]const XGeometry * pFace: 几何拓扑对象
  *return value: pFace为几何边对象的父拓扑对象返回true，否则返回false

{{anchor:addupperentity}}
**void addUpperEntity(const XGeometry * pFace)**
  *function: 添加父拓扑对象
  *parameters: 
    - [i]const XGeometry * pFace: 父拓扑对象
  *return value: 无

{{anchor:removeupperentity}}
**void removeUpperEntity(const XGeometry *pFace)**
  *function: 删除父拓扑对象
  *parameters: 
    - [i]const XGeometry *pFace: 父拓扑对象
  *return value: 无

{{anchor:buildrenderdatafvm}}
**void buildRenderDataFVM()**
  *function: 构建有限体积法下的几何边渲染视图数据
  *parameters: NULL
  *return value: 无

{{anchor:buildrenderdata}}
**void buildRenderData()**
  *function: 构建几何边的渲染视图数据
  *parameters: NULL
  *return value: 无

{{anchor:updaterenderdata}}
**void updateRenderData(const float * colorValue, int colorLoc, const float * deformX, const float * deformY, const float * deformZ, const int * colorIndex = NULL)**
  *function: 更新几何边的渲染视图数据
  *parameters: 
    - [i]const float * colorValue: 渲染数值地址
    - [i] int colorLoc: 渲染数值的位置（积分点、单元节点或节点）
    - [i] const float * deformX: X变形分量数组地址
    - [i] const float * deformY: Y变形分量数组地址
    - [i] const float * deformZ: Z变形分量数组地址
    - [i] const int * elemNodeIndex = NULL: 单元节点数组索引
  *return value: 无

{{anchor:getrenderdata}}
**const XRenderData * getRenderData() const**
  *function: 获取几何边的渲染视图数据
  *parameters: NULL
  *return value: 无

{{anchor:clear}}
**void clear(ClearFlag f = Clear_All)**
  *function: 清空几何边的数据
  *parameters: 
    - [i]ClearFlag f = Clear_All: 清空标记
  *return value: 无

{{anchor:getboundbox}}
**const XBoundBox & getBoundBox() const**
  *function:  获取几何边的包围盒
  *parameters: NULL
  *return value: 几何边的包围盒

{{anchor:normalizeboundbox}}
**void normalizeBoundBox(const real * origin, real scale)**
  *function: 归一化几何边的包围盒
  *parameters: 
    - [i]const real * origin:  归一化基准点
    - [i] real scale: 归一化系数
  *return value: 无

{{anchor:restoreboundbox}}
**void restoreBoundBox(const real * origin, real scale)**
  *function: 归一化之后恢复几何面的原始包围盒
  *parameters: 
    - [i]const real * origin: 归一化基准点
    - [i] real scale: 归一化系数
  *return value: 无

{{anchor:copyboundbox}}
**void copyBoundBox(const XEdge * e)**
  *function: 拷贝几何面对象的包围盒
  *parameters: 
    - [i]const XEdge * e: 参考几何边对象
  *return value: 无

{{anchor:getchildcount}}
**ulong getChildCount() const**
  *function: 获取子拓扑对象个数
  *parameters: NULL
  *return value: 子拓扑对象个数

{{anchor:getchildentity}}
**const XGeometry * getChildEntity(ulong id)const**
  *function: 获取指定ID的子拓扑对象
  *parameters: 
    - [i]ulong id: 子拓扑对象ID
  *return value: 如包含指定ID的子拓扑对象，返回该对象，否则返回空

{{anchor:getuppercount}}
**int getUpperCount() const**
  *function: 获取父拓扑对象的个数
  *parameters: NULL
  *return value: 父拓扑对象的个数

{{anchor:write}}
**void write(XBinaryIO * io)const**
  *function: 将几何边对象写入到二进制文件中
  *parameters: 
    - [i]XBinaryIO * io: 二进制文件句柄
  *return value: 无

{{anchor:read}}
**ErrorCode read(GeometryManager * esmgr, XBinaryIO * io)**
  *function: 从二进制文件中读取几何对象数据
  *parameters: 
    - [i]GeometryManager * esmgr: 几何对象管理器
    - [i] XBinaryIO * io: 二进制文件句柄
  *return value: 成功读取返回Error_None,否则返回相应错误码

{{anchor:updateafterrenumber}}
**void updateAfterRenumber(TypeID tid = DItem_Element)**
  *function: 在对模型对象重编号之后调用，用以更新对重编号对象的引用
  *parameters: 
    - [i]TypeID tid = DItem_Element: 重编号的对象类型
  *return value: 无

{{anchor:backupcolor}}
**void backupColor()**
  *function: 备份颜色
  *parameters: NULL
  *return value: 无

{{anchor:recovercolor}}
**void recoverColor()**
  *function: 恢复备份颜色
  *parameters: NULL
  *return value: 无

{{anchor:getcenter}}
**void getCenter(real * c) const**
  *function: 计算几何边的中心
  *parameters: 
    - [i]real * c: 中心坐标
  *return value: 无

{{anchor:isloop}}
**bool isLoop() const**
  *function: 是否为闭合曲线
  *parameters: NULL
  *return value: 是闭合曲线返回true，否则返回false

----

{{anchor:attachchildentity}}
**void attachChildEntity(const XGeometry * pEntity)**
  *function: 绑定几何边对象与子拓扑对象的从属关系
  *parameters: 
    - [i]const XGeometry * pEntity: 子拓扑对象
  *return value: 无

{{anchor:detachchildentity}}
**void detachChildEntity(ulong id)**
  *function: 解除几何边对象与子拓扑对象的从属关系
  *parameters: 
    - [i]ulong id: 子拓扑对象ID
  *return value: 无

{{anchor:setendvertex0}}
**void setEndVertex0(const XVertex * pVertex)**
  *function: 设置第一个端顶点
  *parameters: 
    - [i]const XVertex * pVertex: 顶点对象
  *return value: 无

{{anchor:setendvertex1}}
**void setEndVertex1(const XVertex * pVertex)**
  *function: 设置第二个端顶点
  *parameters: 
    - [i]const XVertex * pVertex: 顶点对象
  *return value: 无
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