//由点集生成面（环形Polygon）
private IGeometry getGeometry(IPointCollection Points)
{
Ring ring = new RingClass();
object missing = Type.Missing;
ring.AddPointCollection(Points);
IGeometryCollection pointPolygon = new PolygonClass();
pointPolygon.AddGeometry(ring as IGeometry, ref missing, ref missing);
IPolygon polyGonGeo = pointPolygon as IPolygon;
//polyGonGeo.Close();
polyGonGeo.SimplifyPreserveFromTo();
return(polyGonGeo as IGeometry);
}
/// <summary>
/// 创建面实体
/// </summary>
/// <param name="pITable">数据表对象</param>
/// <param name="entinyNode">VCT空间实体节点</param>
public override void CreateFeature(ITable pITable, EntityNode entinyNode)
{
PolygonNode pPolygonNode = entinyNode as PolygonNode;
if (pPolygonNode != null)
{
IFeatureClass pFeatureCls = pITable as IFeatureClass;
this.Feature = pFeatureCls.CreateFeature();
///标识码赋值
int dBSMIndex = -1;
dBSMIndex = this.Feature.Fields.FindField(m_strEntityIDFiled);
if (dBSMIndex != -1)
this.Feature.set_Value(dBSMIndex, pPolygonNode.EntityID);
///要素代码赋值
int dSYDMIndex = -1;
dSYDMIndex = this.Feature.Fields.FindField(m_strYSDMField);
if (dSYDMIndex != -1)
this.Feature.set_Value(dSYDMIndex, pPolygonNode.FeatureCode);
//根据面特征类型构面
bool bGetGeometry = false;///指示是否获取图形数据
///从配置表获取面的类型InDireCoordinatePolygon表示间接坐标构面
if (Metadata.MetaDataFile.GraphConfig.GetGraphMark("POLYGONFEATURETYPE", pPolygonNode.PolygonType.ToString()) == "InDireCoordinatePolygon")
{
IGeometryCollection pGeoCollection = new PolygonClass();
IPointCollection pPtCollection = new RingClass();
///采用间接构面的方式LineStructPolygon表示引用线构面
if (Metadata.MetaDataFile.GraphConfig.GetGraphMark("POLYGONTYPE", pPolygonNode.ComposeType.ToString()) == "LineStructPolygon")
{
for (int i = 0; i < pPolygonNode.LineNodes.Count; i++)
{
LineNodeEx pLineNodeEx = pPolygonNode.LineNodes[i];
if (pLineNodeEx == null)
continue;
///标识码为0表示对象分割标识
if (pLineNodeEx.EntityID != 0)
{
IPoint pPrePoint=null;
if (pPtCollection.PointCount > 0)
pPrePoint = pPtCollection.get_Point(pPtCollection.PointCount-1);
IPointCollection pPointCollection=GetPointCollection(pLineNodeEx, pPrePoint);
if (pPointCollection != null)
pPtCollection.AddPointCollection(pPointCollection);
if (i == pPolygonNode.LineNodes.Count - 1)
{
IRing pRing = pPtCollection as IRing;
pRing.Close();///闭合当前环
object oTypeMissing = Type.Missing;
pGeoCollection.AddGeometry(pRing as IGeometry, ref oTypeMissing, ref oTypeMissing);
bGetGeometry = true;
pPtCollection = new RingClass();///清空点集数据
}
}
else///独到标识码为0时闭合图形
{
IRing pRing = pPtCollection as IRing;
pRing.Close();///闭合当前环
object oTypeMissing = Type.Missing;
pGeoCollection.AddGeometry(pRing as IGeometry, ref oTypeMissing, ref oTypeMissing);
bGetGeometry = true;
pPtCollection = new RingClass();///清空点集数据
}
}
if (bGetGeometry)
{
(this.Feature as IFeature).Shape = pGeoCollection as IGeometry;
}
}
}
else if (pPolygonNode.PolygonType == 1)
{
}
this.Feature.Store();
}
}
/// <summary>
/// 生成可视与不可视域的多面体 张琪 20110621
/// </summary>
/// <param name="bIsVis">是否可视</param>
/// <param name="pObsPt">观察点</param>
/// <param name="pTarPt">目标点</param>
/// <param name="pVisLine">可视线要素</param>
/// <param name="pInVisLine">不可视线要素</param>
/// <param name="pVisPatch">可视多面体</param>
/// <param name="pInVisPatch">不可视多面体</param>
/// <param name="dTargetHeight"></param>
public void CreateVerticalLOSPatches(bool bIsVis, ESRI.ArcGIS.Geometry.IPoint pObsPt, ESRI.ArcGIS.Geometry.IPoint pTarPt, IPolyline pVisLine, IPolyline pInVisLine, IGeometryCollection pVisPatch, IGeometryCollection pInVisPatch, double dTargetHeight)
{
IGeometryCollection pGeomColl = pVisLine as IGeometryCollection; //存储可视域线要素
IMultiPatch pVisMPatch = pVisPatch as IMultiPatch;
IMultiPatch pInVisMPatch = pInVisPatch as IMultiPatch; //生成不可视域要素
dTargetHeight = pTarPt.Z;
double dist1 = 0;
double dist2;
IPointCollection pPc;
IClone pClone;
ESRI.ArcGIS.Geometry.IPoint pLastVisPoint = null;
IPointCollection pVisFan = new TriangleFanClass();//用于存储可视域多面体要素
object before = Type.Missing;
object after = Type.Missing;
for (int i = 0; i < pGeomColl.GeometryCount; i++)//遍历可视域线要素
{
pPc = pGeomColl.get_Geometry(i) as IPointCollection;
if (i == 0)//当为第一个可视域线要素是先要存储观察点要素
{
pClone = pObsPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pClone = pPc.get_Point(0) as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
ESRI.ArcGIS.Geometry.IPoint pStartPoint = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
}
pClone = pPc as IClone;
pVisFan.AddPointCollection(pClone.Clone() as IPointCollection); //将可视域线要素的点集合存储于pVisFan中
if (i == pGeomColl.GeometryCount - 1) //当为可视域最后一个线要素时
{
IVector3D pV = new Vector3DClass();
ESRI.ArcGIS.Geometry.IPoint p1;
pClone = pObsPt as IClone;
p1 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p1.Z = 0;
ESRI.ArcGIS.Geometry.IPoint p2;
pClone = pPc.get_Point(pPc.PointCount - 1) as IClone;
p2 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p2.Z = 0;
pV.ConstructDifference(p1, p2);
dist1 = pV.Magnitude;
pLastVisPoint = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
if (pInVisLine == null)
{
if (pTarPt.Z > pPc.get_Point(pPc.PointCount - 1).Z)//当被观察点高程高于最后一点要素时则到被观点都是可视的
{
pClone = pTarPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
}
}
}
pVisPatch.AddGeometry(pVisFan as IGeometry, ref before, ref after); //根据获得的点要素集生成TriangleFanClass
}
if (pInVisLine != null) //当不可视域的线要素不为空时
{
pGeomColl = pInVisLine as IGeometryCollection;
IPointCollection pInVisRing = new RingClass();//用于存储不可视域点要素集并生成RingClass
for (int i = 0; i < pGeomColl.GeometryCount; i++)
{
pPc = pGeomColl.get_Geometry(i) as IPointCollection;
pClone = pPc.get_Point(0) as IClone;
pInVisRing.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pClone = pPc as IClone;
pInVisRing.AddPointCollection(pClone.Clone() as IPointCollection);
if (i == pGeomColl.GeometryCount - 1)
{
IVector3D pV = new Vector3DClass();
pClone = pObsPt as IClone;
ESRI.ArcGIS.Geometry.IPoint p1 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p1.Z = 0;
pClone = pPc.get_Point(pPc.PointCount - 1) as IClone;
ESRI.ArcGIS.Geometry.IPoint p2 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p2.Z = 0;
pV.ConstructDifference(p1, p2);
dist2 = pV.Magnitude;
if (dist1 < dist2)
{
pClone = pObsPt as IClone;
p1 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p1.Z = 0;
pClone = pPc.get_Point(0) as IClone;
p2 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p2.Z = 0;
pV.ConstructDifference(p1, p2);
double theDist1;
theDist1 = pV.Magnitude;
double slope = (pObsPt.Z - pPc.get_Point(0).Z) / theDist1;
pClone = pPc.get_Point(pPc.PointCount - 1) as IClone;
ESRI.ArcGIS.Geometry.IPoint pEndPoint = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p2 = pClone.Clone() as ESRI.ArcGIS.Geometry.IPoint;
p2.Z = 0;
pV.ConstructDifference(p1, p2);
double theDist2 = pV.Magnitude;
double deltaZ = theDist2 * slope;
double theHeight = pObsPt.Z - deltaZ;
pEndPoint.Z = theHeight;
pClone = pEndPoint as IClone;
pInVisRing.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
if (bIsVis)//为True时说明不可视域线要素空间范围内存在可视区域
{
pVisFan = new TriangleFanClass();
pClone = pObsPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pClone = pTarPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pVisPatch.AddGeometry(pVisFan as IGeometry, ref before, ref after);
}
else
{
dTargetHeight = pEndPoint.Z;
}
}
else
{
if (bIsVis)
{
if (pTarPt.Z > pLastVisPoint.Z)
{
pVisFan = new TriangleFanClass();
pClone = pObsPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pClone = pTarPt as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pClone = pLastVisPoint as IClone;
pVisFan.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pVisPatch.AddGeometry(pVisFan as IGeometry, ref before, ref after);
}
}
}
}
pClone = pPc.get_Point(0) as IClone;
pInVisRing.AddPoint(pClone.Clone() as IPoint, ref before, ref after);
pInVisPatch.AddGeometry(pInVisRing as IGeometry, ref before, ref after);//获取每段不可视域线要素点集合并生成RingClass
pInVisMPatch.PutRingType(pInVisRing as IRing, esriMultiPatchRingType.esriMultiPatchRing);
}
}
}
/// <summary>
/// ������ʵ��
/// </summary>
/// <param name="pITable">���ݱ����</param>
/// <param name="entinyNode">VCT�ռ�ʵ��ڵ�</param>
public override void CreateFeature(ITable pITable, EntityNode entinyNode)
{
PolygonNode pPolygonNode = entinyNode as PolygonNode;
if (pPolygonNode != null)
{
IFeatureClass pFeatureCls = pITable as IFeatureClass;
this.Feature = pFeatureCls.CreateFeature();
///��ʶ�븳ֵ
int dBSMIndex = -1;
dBSMIndex = this.Feature.Fields.FindField(m_strEntityIDFiled);
if (dBSMIndex != -1)
this.Feature.set_Value(dBSMIndex, pPolygonNode.EntityID);
///Ҫ�ش��븳ֵ
int dSYDMIndex = -1;
dSYDMIndex = this.Feature.Fields.FindField(m_strYSDMField);
if (dSYDMIndex != -1)
this.Feature.set_Value(dSYDMIndex, pPolygonNode.FeatureCode);
//����������������
bool bGetGeometry = false;///ָʾ�Ƿ��ȡͼ������
///�����ñ��ȡ�������InDireCoordinatePolygon��ʾ������깹��
if (Metadata.MetaDataFile.GraphConfig.GetGraphMark("POLYGONFEATURETYPE", pPolygonNode.PolygonType.ToString()) == "InDireCoordinatePolygon")
{
IGeometryCollection pGeoCollection = new PolygonClass();
IPointCollection pPtCollection = new RingClass();
///���ü�ӹ���ķ�ʽLineStructPolygon��ʾ�����߹���
if (Metadata.MetaDataFile.GraphConfig.GetGraphMark("POLYGONTYPE", pPolygonNode.ComposeType.ToString()) == "LineStructPolygon")
{
for (int i = 0; i < pPolygonNode.LineNodes.Count; i++)
{
LineNodeEx pLineNodeEx = pPolygonNode.LineNodes[i];
if (pLineNodeEx == null)
continue;
///��ʶ��Ϊ0��ʾ����ָ��ʶ
if (pLineNodeEx.EntityID != 0)
{
IPoint pPrePoint=null;
if (pPtCollection.PointCount > 0)
pPrePoint = pPtCollection.get_Point(pPtCollection.PointCount-1);
IPointCollection pPointCollection=GetPointCollection(pLineNodeEx, pPrePoint);
if (pPointCollection != null)
pPtCollection.AddPointCollection(pPointCollection);
if (i == pPolygonNode.LineNodes.Count - 1)
{
IRing pRing = pPtCollection as IRing;
pRing.Close();///�պϵ�ǰ��
object oTypeMissing = Type.Missing;
pGeoCollection.AddGeometry(pRing as IGeometry, ref oTypeMissing, ref oTypeMissing);
bGetGeometry = true;
pPtCollection = new RingClass();///��յ㼯����
}
}
else///������ʶ��Ϊ0ʱ�պ�ͼ��
{
IRing pRing = pPtCollection as IRing;
pRing.Close();///�պϵ�ǰ��
object oTypeMissing = Type.Missing;
pGeoCollection.AddGeometry(pRing as IGeometry, ref oTypeMissing, ref oTypeMissing);
bGetGeometry = true;
pPtCollection = new RingClass();///��յ㼯����
}
}
if (bGetGeometry)
{
(this.Feature as IFeature).Shape = pGeoCollection as IGeometry;
}
}
}
else if (pPolygonNode.PolygonType == 1)
{
}
this.Feature.Store();
}
}
