/// <summary>
/// 绘制工作面预警
/// </summary>
public void taskAlarm(LibGeometry.Vector3_DW[] vectors,ESRI.ArcGIS.Controls.AxMapControl map)
{
//1、提取散点
//2、先由散点创建FeatureClass
//3、由FeatureClass创建TIN
DirectoryInfo dir = new DirectoryInfo(Application.StartupPath + "\\tempRaster");
if (dir.Exists)
{
try
{
DirectoryInfo[] childs = dir.GetDirectories();
foreach (DirectoryInfo child in childs)
{
child.Delete(true);
}
dir.Delete(true);
Directory.CreateDirectory(Application.StartupPath + "\\tempRaster");
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
else
{
Directory.CreateDirectory(Application.StartupPath + "\\tempRaster");
}
IFeatureClass pFeatureClass = GetFeatureCLass(vectors,map);
IField pField = pFeatureClass.Fields.get_Field(pFeatureClass.FindField(" CoordinateZ"));
CreateRasterfromFeature( Application.StartupPath + "\\tempRaster");
//map.AddLayer(pTinLayer as ILayer);
}
/// <summary>
/// 根据离散点数据动态生成featureclass点图层
/// </summary>
/// <params name="vectors"></params>
/// <returns></returns>
private static IFeatureClass GetFeatureCLass(LibGeometry.Vector3_DW[] vectors,ESRI.ArcGIS.Controls.AxMapControl map)
{
IWorkspaceFactory pWorkspaceFactory = new InMemoryWorkspaceFactoryClass();
IWorkspaceName pWorkspaceName = pWorkspaceFactory.Create("", "pWorkspace", null, 0);
IName pName = (IName)pWorkspaceName;
IWorkspace pWorkspace = (IWorkspace)pName.Open();
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
IFields pFields = new FieldsClass();
IFieldsEdit pFieldsEdit = pFields as IFieldsEdit;
IField pField = new FieldClass();
IFieldEdit pFieldEdit = pField as IFieldEdit;
pFieldEdit.Name_2 = "SHAPE";
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
IGeometryDef pGeometryDef = new GeometryDefClass();
IGeometryDefEdit pGeometryDefEdit = pGeometryDef as IGeometryDefEdit;
pGeometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
//为FeatureClass赋参考系，不写会出错***************************************
pGeometryDefEdit.SpatialReference_2 = map.SpatialReference;
//************************************************************************
pFieldEdit.GeometryDef_2 = pGeometryDef;
pFieldsEdit.AddField(pField);
pField = new FieldClass();//不要省略写！容易出问题
pFieldEdit = pField as IFieldEdit;
pFieldEdit.AliasName_2 = "高程";
pFieldEdit.Name_2 = "CoordinateZ";
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
pFieldsEdit.AddField(pField);
pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(Application.StartupPath+"\\tempRaster", 0) as IFeatureWorkspace;
IFeatureClass pFeatureClass = pFeatureWorkspace.CreateFeatureClass("points", pFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");
//IWorkspaceFactory pWorkSpaceFac = new ShapefileWorkspaceFactoryClass();
//IFeatureWorkspace pFeatureWorkSpace = pWorkSpaceFac.OpenFromFile(shpfolder, 0) as IFeatureWorkspace;
////创建字段集2
//IFeatureClassDescription fcDescription = new FeatureClassDescriptionClass();
//IObjectClassDescription ocDescription = (IObjectClassDescription)fcDescription;//创建必要字段
//IFields fields = ocDescription.RequiredFields;
//int shapeFieldIndex = fields.FindField(fcDescription.ShapeFieldName);
//IField field = fields.get_Field(shapeFieldIndex);
//IGeometryDef geometryDef = field.GeometryDef;
//IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef;
////geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
////geometryDefEdit.SpatialReference_2 = spatialReference;
//geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon;
//ISpatialReferenceFactory pSpatialRefFac = new SpatialReferenceEnvironmentClass();
//IProjectedCoordinateSystem pcsSys = pSpatialRefFac.CreateProjectedCoordinateSystem((int)esriSRProjCS4Type.esriSRProjCS_Xian1980_3_Degree_GK_Zone_39);
//geometryDefEdit.SpatialReference_2 = pcsSys;
//IFieldChecker fieldChecker = new FieldCheckerClass();
//IEnumFieldError enumFieldError = null;
//IFields validatedFields = null; //将传入字段 转成 validatedFields
//fieldChecker.ValidateWorkspace = (IWorkspace)pFeatureWorkSpace;
//fieldChecker.Validate(fields, out enumFieldError, out validatedFields);
//pFeatureWorkSpace.CreateFeatureClass(shpname, validatedFields, ocDescription.InstanceCLSID, ocDescription.ClassExtensionCLSID, esriFeatureType.esriFTSimple, fcDescription.ShapeFieldName, "");
//从vectors中获取散点值
Dictionary<int, IPoint> pointDictionary = new Dictionary<int, IPoint>();
for (int i = 0; i < vectors.Length; i++)
{
IPoint pPoint=new PointClass();
pPoint.X = vectors[i].X;
pPoint.Y = vectors[i].Y;
pPoint.Z =vectors[i].Z;
if (pPoint.Z.ToString() != "非数字")
{
pointDictionary.Add(i, pPoint);
}
}
//插入到新建的FeatureClass中
IWorkspaceEdit pWorkspaceEdit = pWorkspace as IWorkspaceEdit;
pWorkspaceEdit.StartEditing(true);
pWorkspaceEdit.StartEditOperation();
IFeatureBuffer pFeatureBuffer = pFeatureClass.CreateFeatureBuffer();
IFeatureCursor pFeatureCursor = pFeatureClass.Insert(true);
for (int featureNum = 4; featureNum < pointDictionary.Count;featureNum++ )
{
pFeatureBuffer.Shape = pointDictionary[featureNum] as IPoint;//出错点，在于新建字段的错误
pFeatureBuffer.set_Value(pFeatureClass.Fields.FindField("CoordinateZ"), pointDictionary[featureNum].Z);
pFeatureCursor.InsertFeature(pFeatureBuffer);
}
pFeatureCursor.Flush();
pWorkspaceEdit.StopEditOperation();
pWorkspaceEdit.StopEditing(true);
return pFeatureClass;
}