/// <summary>
/// 写入多边形线节点（非引用线图层）
/// </summary>
/// <param name="pVCTFile">VCT文件对象</param>
public void WritePolygonLineNodes(VCTFile pVCTFile)
{
if (this.m_pOleDbConnection != null && m_pOleDbConnection.State == ConnectionState.Open)
{
LineNodeExTable pLineNodeExTable = new LineNodeExTable(m_pOleDbConnection);
//只写入正向线节点
string strWhere = pLineNodeExTable.FieldName_IsFromLine + "=-1 And "
+ pLineNodeExTable.FieldName_IsReverse + "=-1 And " + pLineNodeExTable.FieldName_EntityID + "<>0";
//按标识码、在面的边界线集合中的索引排序
string strLineNodeExOrderBy = pLineNodeExTable.FieldName_PolygonID + "," + pLineNodeExTable.FieldName_LineIndex;
DataTable dataTable = pLineNodeExTable.GetRecords(strWhere, "", strLineNodeExOrderBy);
LineNodeEx lineNode = null;
LineNodeEx lineNodeCurrent = null;
LineNodeEx lineNodeUp = null;
//for (int i = 0; i < dataTable.Rows.Count; i++)
while (dataTable.Rows.Count > 0)
{
for (int i = 0; i < dataTable.Rows.Count; i++)
{
lineNodeCurrent = new LineNodeEx();
//LineNode lineNodeTemp = lineNodeCurrent as LineNode;
pLineNodeExTable.GetLineNodeByDataRow(dataTable.Rows[i], ref lineNodeCurrent, false);
if (lineNode == null)
{
lineNode = lineNodeCurrent;
}
else
{
//判断当前线节点与上一线节点是否属于同一个面
if (lineNodeCurrent.PolygonID != lineNodeUp.PolygonID)
{
pVCTFile.WritePolygonLineNode(lineNode);
lineNode = lineNodeCurrent;
}
else
{
if (lineNodeCurrent.EntityID == lineNode.EntityID)
{
lineNode.SegmentNodes.AddRange(lineNodeCurrent.SegmentNodes);
}
else
{
pVCTFile.WritePolygonLineNode(lineNode);
lineNode = lineNodeCurrent;
}
}
}
lineNodeUp = lineNodeCurrent;
}
if (dataTable.Rows.Count < pLineNodeExTable.MaxRecordCount)
break;
dataTable = pLineNodeExTable.GetNextRecords();
}
if (lineNode != null)
pVCTFile.WritePolygonLineNode(lineNode);
}
}
