/// <summary>
/// 创建TIN
/// </summary>
private void CreateDelaunay()
{
//创建TIN
IFeatureLayer featureLayer = m_dataInfo.GetInputLayer() as IFeatureLayer;
IFeatureClass featureClass = featureLayer.FeatureClass;
IField pField = featureClass.Fields.get_Field(0);
if (pField == null)
{
MessageBox.Show("创建Delaunay三角网失败");
return;
}
IGeoDataset pGeoDataset = featureClass as IGeoDataset;
IEnvelope pEnvelope = pGeoDataset.Extent;
pEnvelope.SpatialReference = pGeoDataset.SpatialReference;
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pEnvelope);
object obj = Type.Missing;
pTinEdit.AddFromFeatureClass(featureClass, null, pField, null, esriTinSurfaceType.esriTinMassPoint, ref obj);
m_DT = pTinEdit as ITin;
//将所有点标识为噪声点
ITinAdvanced tinAdvanced = m_DT as ITinAdvanced;
for (int i = 0; i < tinAdvanced.NodeCount; i++)
{
m_nodeFlag.Add(-1);
}
}
/// <summary>
/// 创建Tin文件
/// </summary>
/// <param name="pFeatureClass">要素类</param>
private void CreateTinFromFeature(IFeatureClass pFeatureClass)
{
try
{
IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
ESRI.ArcGIS.Geometry.IEnvelope pExtent = pGeoDataset.Extent;
pExtent.SpatialReference = pGeoDataset.SpatialReference;
//获得高程值
IFields pFields = pFeatureClass.Fields;
IField pHeightField;
pHeightField = pFields.get_Field(3);
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pExtent);
object Missing = Type.Missing;
object pbUseShapeZ = Missing;
object pOverWrite = Missing;
pTinEdit.AddFromFeatureClass(pFeatureClass, null, pHeightField, null, esriTinSurfaceType.esriTinMassPoint, ref pbUseShapeZ);
pTinEdit.SaveAs(Application.StartupPath + "\\Convert\\TemTIN\\" + this.Random, ref pOverWrite);
pTinEdit.StopEditing(false);
CreateContourData(Application.StartupPath + "\\Convert\\TemTIN");
}
catch (Exception)
{
}
}
private ITin Create_TIN(IFeatureClass pFeatureClass, IField pField)
{
IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pGeoDataset.Extent);
object pObj = Type.Missing;
pTinEdit.AddFromFeatureClass(pFeatureClass, null, pField, null, esriTinSurfaceType.esriTinMassPoint, ref pObj);
pTinEdit.Refresh();
return(pTinEdit as ITin);
}
public static IGeometry GetExample14()
{
const int PointCount = 100;
const double ZMin = 0;
const double ZMax = 4;
//Extrusion: Square Shaped Base Geometry Extruded Between Single TIN-Based Functional Surface
IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();
//Base Geometry
IEnvelope envelope = new EnvelopeClass();
envelope.XMin = -10;
envelope.XMax = 10;
envelope.YMin = -10;
envelope.YMax = 10;
IGeometry baseGeometry = envelope as IGeometry;
//Upper Functional Surface
ITinEdit tinEdit = new TinClass();
tinEdit.InitNew(envelope);
Random random = new Random();
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = ZMin + (ZMax - ZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
tinEdit.AddPointZ(point, 0);
}
IFunctionalSurface functionalSurface = tinEdit as IFunctionalSurface;
IConstructMultiPatch constructMultiPatch = new MultiPatchClass();
constructMultiPatch.ConstructExtrudeBetween(functionalSurface, functionalSurface, baseGeometry);
return(constructMultiPatch as IGeometry);
}
/// <summary>
/// 高程点生成TIN
/// </summary>
/// <param name="featureClass">点要素</param>
/// <param name="path">保存路径</param>
/// <returns>TIN数据</returns>
public static ITin CreateTIN(IFeatureClass featureClass, string path)
{
string folder = System.IO.Path.GetDirectoryName(path);
IGeoDataset geoDataset = featureClass as IGeoDataset;
IField zField = featureClass.Fields.get_Field(4);//高程字段
ITinEdit tinEdit = new TinClass();
tinEdit.InitNew(geoDataset.Extent);
tinEdit.AddFromFeatureClass(featureClass, null, zField, null, esriTinSurfaceType.esriTinMassPoint);
if (System.IO.Directory.Exists(folder + "\\tin"))
{
(new System.IO.DirectoryInfo(folder + "\\tin")).Delete(true);
}
tinEdit.SaveAs(folder + "\\tin");
tinEdit.Refresh();
tinEdit.StopEditing(true);
return(tinEdit as ITin);
}
protected override void OnClick()
{
try
{
string shpFilePath = string.Format(@"C:\temp\contour datas");
string shpFileName = "contour2.shp"; // height data
IWorkspaceFactory workspaceFactory = new ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactoryClass();
IWorkspace workspace = workspaceFactory.OpenFromFile(shpFilePath, 0);
IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace;
IFeatureClass pFeatureClass = featureWorkspace.OpenFeatureClass(shpFileName);
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.FeatureClass = pFeatureClass;
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.WhereClause = "";
IEnvelope pEnv = pFeatureLayer.AreaOfInterest;
IGeoDataset pGDS = (IGeoDataset)pFeatureLayer.FeatureClass;
ISpatialReference pSR = pGDS.SpatialReference;
IGeometry pGeom = pEnv;
pGeom.Project(pSR);
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pEnv);
IFields pFields = pFeatureClass.Fields;
IField pFiled = pFields.get_Field(pFields.FindField("HSL"));
object Missing = Type.Missing;
esriTinSurfaceType pTinSurface = esriTinSurfaceType.esriTinHardLine;
pTinEdit.AddFromFeatureClass(pFeatureClass, pQueryFilter, pFiled, pFiled, pTinSurface, ref Missing);
string outputFolderPath = @"C:\temp\Output\";
string tinFolderName = "tin_data";
pTinEdit.SaveAs(outputFolderPath + tinFolderName, ref Missing);
MessageBox.Show("end");
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
ArcMap.Application.CurrentTool = null;
}
protected override void OnClick()
{
try
{
string shpFilePath = string.Format(@"C:\temp\contour datas");
string shpFileName = "contour2.shp"; // height data
IWorkspaceFactory workspaceFactory = new ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactoryClass();
IWorkspace workspace = workspaceFactory.OpenFromFile(shpFilePath, 0);
IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace;
IFeatureClass pFeatureClass = featureWorkspace.OpenFeatureClass(shpFileName);
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.FeatureClass = pFeatureClass;
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.WhereClause = "";
IEnvelope pEnv = pFeatureLayer.AreaOfInterest;
IGeoDataset pGDS = (IGeoDataset)pFeatureLayer.FeatureClass;
ISpatialReference pSR = pGDS.SpatialReference;
IGeometry pGeom = pEnv;
pGeom.Project(pSR);
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pEnv);
IFields pFields = pFeatureClass.Fields;
IField pFiled = pFields.get_Field(pFields.FindField("HSL"));
object Missing = Type.Missing;
esriTinSurfaceType pTinSurface = esriTinSurfaceType.esriTinHardLine;
pTinEdit.AddFromFeatureClass(pFeatureClass, pQueryFilter, pFiled, pFiled, pTinSurface, ref Missing);
string outputFolderPath = @"C:\temp\Output\";
string tinFolderName = "tin_data";
pTinEdit.SaveAs(outputFolderPath + tinFolderName, ref Missing);
MessageBox.Show("end");
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
ArcMap.Application.CurrentTool = null;
}
/// <summary>
///
/// </summary>
/// <param name="ConstraintCpllt"></param>
/// <param name="KnownCEdgeLt"></param>
/// <param name="strIdentity"></param>
/// <param name="blnSave"></param>
/// <remarks>If the "data area" is not set deliberately, then ArcEngine will set a default "data area".
/// The default data area excludes super edges and super nodes</remarks>
public void Triangulate(List <CPolyline> ConstraintCpllt = null, List <CEdge> KnownCEdgeLt = null,
string strIdentity = "", bool blnSave = false)
{
var cpg = _CPg;
//cpg.pPolygon = null;
cpg.JudgeAndSetPolygon();
IPointCollection4 pCol = cpg.pPolygon as IPointCollection4;
int intCount = pCol.PointCount;
var pEnv = cpg.pPolygon.Envelope;
ITinEdit TinEdit = new TinClass();
TinEdit.InitNew(pEnv);
ITinEdit2 TinEdit2 = TinEdit as ITinEdit2;
TinEdit2.SetToConstrainedDelaunay(); //this must be done before adding any feature
var pTinAdvanced2 = TinEdit as ITinAdvanced2;
ITinFeatureEdit pTinFeatureEdit = TinEdit as ITinFeatureEdit;
cpg.JudgeAndSetZToZero(); //we need z coordinate to construct triangulation
pTinFeatureEdit.AddPolygonZ(cpg.pPolygon, esriTinEdgeType.esriTinHardEdge, 1, 1, 1, null);
if (ConstraintCpllt != null)
{
foreach (var cpl in ConstraintCpllt)
{
cpl.JudgeAndSetPolyline();
cpl.JudgeAndSetZToZero();
pTinFeatureEdit.AddPolylineZ(cpl.pPolyline, esriTinEdgeType.esriTinHardEdge, 1, 1, null);
}
}
_pTinAdvanced2 = pTinAdvanced2;
//we are not allowed to use AddShapeZ.
//it will report that there is no Z value in the shape, even we already set Z value to 0
//The reason may be that we actually need polyhedron
//TinEdit.AddShapeZ((IGeometry)cpg.pPolygon, esriTinSurfaceType.esriTinHardClip, 0);
//********************************************
//this function set the "data area" of the TIN,
//we avoid to use this function because it may introduce new points
//the new poins can be very close to the original points
//TinEdit.AddShape((IGeometry)cpg.pPolygon, esriTinSurfaceType.esriTinHardClip, 0);
//TinEdit.Refresh();
if (pTinAdvanced2.DataNodeCount != this.CptLt.Count)
{
//Usually, KnownCEdgeLt saves all the constraints for the triangulation
CSaveFeature.SaveCEdgeEb(KnownCEdgeLt, "KnownCEdgeLt" + strIdentity);
CSaveFeature.SaveCptEb(this.CptLt, "CptLtForKnownCEdgeLt" + strIdentity);
var NodeCptLt = GetCptLtFromTinAdvanced(pTinAdvanced2, true);
CSaveFeature.SaveCptEb(NodeCptLt, "TinNode" + strIdentity);
//var TinCEdgeLt= get
var ExtraNodeCptLt = new List <CPoint>(pTinAdvanced2.DataNodeCount - this.CptLt.Count);
foreach (var nodeCpt in NodeCptLt)
{
if (this.CptSD.ContainsKey(nodeCpt) == false)
{
ExtraNodeCptLt.Add(nodeCpt);
}
}
CSaveFeature.SaveCptEb(ExtraNodeCptLt, "ExtraNodeCptLt" + strIdentity);
var TinCEdgeLt = GetCEdgeLtFromTinAdvanced(pTinAdvanced2);
CSaveFeature.SaveCEdgeEb(TinCEdgeLt, "TinCEdgeLt" + strIdentity);
throw new ArgumentException("the numbers of points should be the same!");
}
this.CptLt.SetIndexID();
var ITinEdgeLt = GenerateITinEdgeLt();
var tincedgeSS = new SortedSet <CEdge>(new CCmpEdge_CptGID_BothDirections());
var tincedgelt = new List <CEdge>();
if (KnownCEdgeLt != null)
{
tincedgeSS = new SortedSet <CEdge>(KnownCEdgeLt, new CCmpEdge_CptGID_BothDirections());
tincedgelt.AddRange(KnownCEdgeLt);
}
cpg.SetAxisAngleAndReverseLt();
var cptSD = this.CptSD;
foreach (var tinedge in ITinEdgeLt)
{
//there are always a pair of edges between a pair of triangles, but we only need one edge.
//So we reverse some edges than we can delete one edge of each pair
var pFrNode = tinedge.FromNode;
var pToNode = tinedge.ToNode;
CPoint frcpt, tocpt;
FindCorrCptInSDByTinNode(pFrNode, cptSD, out frcpt);
FindCorrCptInSDByTinNode(pToNode, cptSD, out tocpt);
CEdge newCEdge;
if (frcpt.indexID < tocpt.indexID)
{
newCEdge = new CEdge(frcpt, tocpt);
}
else if (frcpt.indexID > tocpt.indexID)
{
newCEdge = new CEdge(tocpt, frcpt);
}
else
{
throw new ArgumentException("should not happen!");
}
//test if the new edge is outside the boundary polygon (cpg)
if (newCEdge.FrCpt.indexID < cpg.CEdgeLt.Count)
{
//the new edge starts from a point which constitues the boundary polygon (cpg)
newCEdge.SetAxisAngle();
if (CGeoFunc.IsInbetween_Counterclockwise(cpg.AxisAngleLt[newCEdge.FrCpt.indexID],
newCEdge.dblAxisAngle, cpg.ReverseAxisAngleLt[newCEdge.FrCpt.indexID]) == false)
{
//the new edge is outside the boundary polygon (cpg)
continue;
}
}
//add the new edge if the edge is not added yet
if (tincedgeSS.Add(newCEdge))
{
this.NewCEdgeLt.Add(newCEdge);
tincedgelt.Add(newCEdge);
}
}
if (blnSave == true)
{
CSaveFeature.SaveCEdgeEb(tincedgelt, "tincedgelt" + strIdentity, blnVisible: false);
}
this.CEdgeLt = tincedgelt;
}
/// <summary>
/// 创建Tin文件
/// </summary>
/// <param name="pFeatureClass">要素类</param>
private void CreateTinFromFeature(IFeatureClass pFeatureClass)
{
try
{
IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
ESRI.ArcGIS.Geometry.IEnvelope pExtent = pGeoDataset.Extent;
pExtent.SpatialReference = pGeoDataset.SpatialReference;
//获得高程值
IFields pFields = pFeatureClass.Fields;
IField pHeightField;
pHeightField = pFields.get_Field(3);
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pExtent);
object Missing = Type.Missing;
object pbUseShapeZ = Missing;
object pOverWrite = Missing;
pTinEdit.AddFromFeatureClass(pFeatureClass, null, pHeightField, null, esriTinSurfaceType.esriTinMassPoint, ref pbUseShapeZ);
pTinEdit.SaveAs(Application.StartupPath + "\\Convert\\TemTIN\\" + this.Random, ref pOverWrite);
pTinEdit.StopEditing(false);
CreateContourData(Application.StartupPath + "\\Convert\\TemTIN");
}
catch (Exception)
{
}
}
private List <CPoint> LookingForNeighboursDT(IFeatureLayer pFeatureLayer, double dblThreshold, int intPtNumLast,
ref long lngTimeForSearching, ref long lngTimeForDT, ref long lngMemory, ref long lngMemoryDT,
ref long lngMemoryDTProcess, ref int intOutPut, string strTINPath)
{
lngMemory = GC.GetTotalMemory(true);
//lngMemoryDT = GC.GetTotalMemory(true);
//lngMemoryDTProcess = Process.GetProcessesByName("ContinuousGeneralizer.vshost")[0].WorkingSet64;
long lngStartTime = System.Environment.TickCount; //record the start time
//lngMemoryDT = Process.GetProcessesByName("ContinuousGeneralizer.vshost")[0].WorkingSet64;
//Process .GetProcessesByName("ContinuousGeneralizer.vshost")[0].
//create TIN
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
IGeoDataset pGDS = (IGeoDataset)pFeatureClass;
IEnvelope pEnv = (IEnvelope)pGDS.Extent;
pEnv.SpatialReference = pGDS.SpatialReference;
IFields pFields = pFeatureClass.Fields;
IField pHeightFiled = new FieldClass();
try
{
pHeightFiled = pFields.get_Field(pFields.FindField("Id"));
}
catch (Exception)
{
pHeightFiled = pFields.get_Field(pFields.FindField("ID"));
throw;
}
//ITinWorkspace
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pEnv);
object Missing = Type.Missing;
pTinEdit.AddFromFeatureClass(pFeatureClass, null, pHeightFiled, null, esriTinSurfaceType.esriTinHardLine, ref Missing);
lngTimeForDT = System.Environment.TickCount - lngStartTime; //Time for constructing DT
//long lngMemoryafterTinEdit = GC.GetTotalMemory(false) - lngMemoryDT;
//GC.Collect();
//lngMemoryDT = GC.GetTotalMemory(true) - lngMemoryDT;
//lngMemoryDTProcess = Process.GetProcessesByName("ContinuousGeneralizer.vshost")[0].WorkingSet64 - lngMemoryDTProcess;
//C5.LinkedList<int> intLLt = new C5.LinkedList<int>();
ITinNodeCollection pTinNodeCollection = (ITinNodeCollection)pTinEdit;
List <CPoint> CptLt = new List <CPoint>(pTinNodeCollection.NodeCount);
for (int i = 1; i <= pTinNodeCollection.NodeCount; i++) //i=1-4: super node
{
ITinNode pNode = pTinNodeCollection.GetNode(i);
CPoint cpt = new CPoint(pNode);
//cpt.intTS = new C5.TreeSet<int>();
CptLt.Add(cpt);
}
//long lngMemoryafterfetching = GC.GetTotalMemory(true);
//lngMemoryDT = GC.GetTotalMemory(true) - lngMemoryDT;
//Looking for neighbours based on Breadth First Search
if (intPtNumLast != -1)
{
dblThreshold = dblThreshold * Math.Pow(Convert.ToDouble(intPtNumLast) / Convert.ToDouble(CptLt.Count - 4), 0.5); //---------------dblThreshold------------------------------------------------//
//Math.Pow(1.8 / Convert.ToDouble(CptLt.Count - 4), 0.5);//---------------dblThreshold------------------------------------------------//
}
//double dblThresholdDT = (1 + Math.Sqrt(2)) / 2 * dblThreshold;
lngTimeForSearching = System.Environment.TickCount; //the start time
SCG.LinkedList <int> intTargetLLt = new SCG.LinkedList <int>();
SCG.LinkedList <int> intAllLLt = new SCG.LinkedList <int>();
for (int i = 0; i < CptLt.Count; i++)
{
CptLt[i].isTraversed = true;
intTargetLLt = new SCG.LinkedList <int>();
intTargetLLt.AddLast(CptLt[i].pTinNode.Index);
intAllLLt = new SCG.LinkedList <int>();
intAllLLt.AddLast(CptLt[i].pTinNode.Index);
while (intTargetLLt.Count > 0)
{
intTargetLLt = BSF(CptLt[i], ref CptLt, ref intTargetLLt, ref intAllLLt, dblThreshold, ref intOutPut);
}
intOutPut--; //the point will take itself as a close point, so we have to minus 1
//CptLt[i].intTS.Remove(CptLt[i].pTinNode.Index);
RestoreIsTraversed(ref CptLt, ref intAllLLt);
//intAllLLt.Dispose();
}
//long lngMemoryaftersearch = GC.GetTotalMemory(true);
lngTimeForSearching = System.Environment.TickCount - lngTimeForSearching; //the result time
lngMemory = GC.GetTotalMemory(true) - lngMemory;
pTinEdit.SaveAs(strTINPath + "\\" + pFeatureLayer.Name, true);
long lngFileSize = CHelpFunc.GetDirectoryLength(strTINPath + "\\" + pFeatureLayer.Name);
lngMemory += lngFileSize;
lngMemoryDT = lngFileSize;
return(CptLt);
}
public void DEMToTIN(IRaster iRaster, string tinFileName)
{
try
{
//***************生成TIN模型*********************************************
IGeoDataset pGeoData = iRaster as IGeoDataset;
IEnvelope pExtent = pGeoData.Extent;
IRasterBandCollection pRasBC = iRaster as IRasterBandCollection;
IRasterBand pRasBand = pRasBC.Item(0);
IRawPixels pRawPixels = pRasBand as IRawPixels;
IRasterProps pProps = pRawPixels as IRasterProps;
int iWid = pProps.Width;
int iHei = pProps.Height;
double w = iWid / 1000.0f;
double h = iHei / 1000.0f;
IPnt pBlockSize = new DblPntClass();
bool IterationFlag;
if (w < 1 && h < 1) //横纵都小于1000个像素
{
pBlockSize.X = iWid;
pBlockSize.Y = iHei;
IterationFlag = false;
}
else
{
pBlockSize.X = 1001.0f;
pBlockSize.Y = 1001.0f;
IterationFlag = true;
}
double cellsize = 0.0f; //栅格大小
IPnt pPnt1 = pProps.MeanCellSize(); //栅格平均大小
cellsize = pPnt1.X;
ITinEdit pTinEdit = new TinClass() as ITinEdit;
pTinEdit.InitNew(pExtent);
ISpatialReference pSpatial = pGeoData.SpatialReference;
pExtent.SpatialReference = pSpatial;
IPnt pOrigin = new DblPntClass();
IPnt pPixelBlockOrigin = new DblPntClass();
//栅格左上角像素中心坐标
double bX = pBlockSize.X;
double bY = pBlockSize.Y;
pBlockSize.SetCoords(bX, bY);
IPixelBlock pPixelBlock = pRawPixels.CreatePixelBlock(pBlockSize);
object nodata = pProps.NoDataValue; //无值标记
ITinAdvanced2 pTinNodeCount = pTinEdit as ITinAdvanced2;
int nodeCount = pTinNodeCount.NodeCount;
object vtMissing = Type.Missing;
object vPixels = null; //格子
double m_zTolerance = 0;
if (!IterationFlag) //当为一个处理单元格子时;(w < 1 && h < 1) //横纵都小于1000个像素
{
pPixelBlockOrigin.SetCoords(0.0f, 0.0f);
pRawPixels.Read(pPixelBlockOrigin, pPixelBlock);
vPixels = pPixelBlock.get_SafeArray(0);
double xMin = pExtent.XMin;
double yMax = pExtent.YMax;
pOrigin.X = xMin + cellsize / 2;
pOrigin.Y = yMax - cellsize / 2;
bX = pOrigin.X;
bY = pOrigin.Y;
pTinEdit.AddFromPixelBlock(bX, bY, cellsize, cellsize, nodata, vPixels, m_zTolerance, ref vtMissing, out vtMissing);
}
else //当有多个处理单元格时，依次循环处理每个单元格
{
int i = 0, j = 0, count = 0;
int FirstGoNodeCount = 0;
//while (nodeCount != FirstGoNodeCount)
//{
count++;
nodeCount = pTinNodeCount.NodeCount;
int bwidth = 0; int bheight = 0;
//依次循环处理
for (i = 0; i < (int)h + 1; i++)
{
if (i < (int)h)
{
bheight = 1000;
}
else
{
bheight = iHei - 1000 * i;
}
for (j = 0; j < (int)w + 1; j++)
{
if (j < (int)w)
{
bwidth = 1000;
}
else
{
bwidth = iWid - 1000 * j;
}
pBlockSize.SetCoords(bwidth, bheight);
pPixelBlock = pRawPixels.CreatePixelBlock(pBlockSize);
double bX1, bY1, xMin1, yMax1;
bX1 = pBlockSize.X;
bY1 = pBlockSize.Y;
pPixelBlockOrigin.SetCoords(j * 1000, i * 1000);
pRawPixels.Read(pPixelBlockOrigin, pPixelBlock);
vPixels = pPixelBlock.get_SafeArray(0);
xMin1 = pExtent.XMin;
yMax1 = pExtent.YMax;
//bX1 = pBlockSize.X;
//bY1 = pBlockSize.Y;
pOrigin.X = xMin1 + j * 1000 * cellsize + cellsize / 2.0f;
pOrigin.Y = yMax1 - i * 1000 * cellsize - cellsize / 2.0f;
bX1 = pOrigin.X;
bY1 = pOrigin.Y;
pTinEdit.AddFromPixelBlock(bX1, bY1, cellsize, cellsize, nodata, vPixels, m_zTolerance, ref vtMissing, out vtMissing);
FirstGoNodeCount = pTinNodeCount.NodeCount;
}
}
//}
}
//保存TIN文件
pTinEdit.SaveAs(tinFileName, ref vtMissing);
pTinEdit.StopEditing(true);
m_pTin = pTinEdit as ITin;
MessageBox.Show("转换成功！");
}
catch (SystemException e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// 创建TIN
/// </summary>
private void CreateDelaunay()
{
//创建TIN
IFeatureLayer featureLayer = m_dataInfo.GetInputLayer() as IFeatureLayer;
IFeatureClass featureClass = featureLayer.FeatureClass;
IField pField = featureClass.Fields.get_Field(0);
if (pField == null)
{
MessageBox.Show("创建Delaunay三角网失败");
return;
}
IGeoDataset pGeoDataset = featureClass as IGeoDataset;
IEnvelope pEnvelope = pGeoDataset.Extent;
pEnvelope.SpatialReference = pGeoDataset.SpatialReference;
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pEnvelope);
object obj = Type.Missing;
pTinEdit.AddFromFeatureClass(featureClass, null, pField, null, esriTinSurfaceType.esriTinMassPoint, ref obj);
m_DT = pTinEdit as ITin;
//将所有点标识为噪声点
ITinAdvanced tinAdvanced = m_DT as ITinAdvanced;
for (int i = 0; i < tinAdvanced.NodeCount; i++)
{
m_nodeFlag.Add(-1);
}
}
public static IGeometry GetExample15()
{
const double CircleDegrees = 360.0;
const int CircleDivisions = 36;
const double VectorComponentOffset = 0.0000001;
const double CircleRadius = 9.5;
const int PointCount = 100;
const double UpperZMin = 7;
const double UpperZMax = 10;
const double LowerZMin = 0;
const double LowerZMax = 3;
//Extrusion: Circle Shaped Base Geometry Extruded Between Two Different TIN-Based Functional Surfaces
IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();
//Base Geometry
IPointCollection polygonPointCollection = new PolygonClass();
IPoint originPoint = GeometryUtilities.ConstructPoint3D(0, 0, 0);
IVector3D upperAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, 10);
IVector3D lowerAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, -10);
lowerAxisVector3D.XComponent += VectorComponentOffset;
IVector3D normalVector3D = upperAxisVector3D.CrossProduct(lowerAxisVector3D) as IVector3D;
normalVector3D.Magnitude = CircleRadius;
double rotationAngleInRadians = GeometryUtilities.GetRadians(CircleDegrees / CircleDivisions);
for (int i = 0; i < CircleDivisions; i++)
{
normalVector3D.Rotate(-1 * rotationAngleInRadians, upperAxisVector3D);
IPoint vertexPoint = GeometryUtilities.ConstructPoint2D(originPoint.X + normalVector3D.XComponent,
originPoint.Y + normalVector3D.YComponent);
polygonPointCollection.AddPoint(vertexPoint, ref _missing, ref _missing);
}
IPolygon polygon = polygonPointCollection as IPolygon;
polygon.Close();
IGeometry baseGeometry = polygon as IGeometry;
ITopologicalOperator topologicalOperator = polygon as ITopologicalOperator;
topologicalOperator.Simplify();
//Functional Surfaces
IEnvelope envelope = new EnvelopeClass();
envelope.XMin = -10;
envelope.XMax = 10;
envelope.YMin = -10;
envelope.YMax = 10;
Random random = new Random();
//Upper Functional Surface
ITinEdit upperTinEdit = new TinClass();
upperTinEdit.InitNew(envelope);
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = UpperZMin + (UpperZMax - UpperZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
upperTinEdit.AddPointZ(point, 0);
}
IFunctionalSurface upperFunctionalSurface = upperTinEdit as IFunctionalSurface;
//Lower Functional Surface
ITinEdit lowerTinEdit = new TinClass();
lowerTinEdit.InitNew(envelope);
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = LowerZMin + (LowerZMax - LowerZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
lowerTinEdit.AddPointZ(point, 0);
}
IFunctionalSurface lowerFunctionalSurface = lowerTinEdit as IFunctionalSurface;
IConstructMultiPatch constructMultiPatch = new MultiPatchClass();
constructMultiPatch.ConstructExtrudeBetween(upperFunctionalSurface, lowerFunctionalSurface, baseGeometry);
return(constructMultiPatch as IGeometry);
}
private void button1_Click(object sender, EventArgs e)
{
if (mLayerCombox.Text == "" || mFeildCombox.Text == "")//判断输入合法性
{
MessageBox.Show("没有相应的图层");
return;
}
ITinEdit pTin = new TinClass();
//寻找Featurelayer
IFeatureLayer pFeatureLayer =
mSceneControl.Scene.get_Layer(mLayerCombox.SelectedIndex) as IFeatureLayer;
if (pFeatureLayer != null)
{
IEnvelope pEnvelope = new EnvelopeClass();
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
IQueryFilter pQueryFilter = new QueryFilterClass();
IField pField = null;
//找字段
pField = pFeatureClass.Fields.get_Field(pFeatureClass.Fields.FindField(mFeildCombox.Text));
if (pField.Type == esriFieldType.esriFieldTypeInteger ||
pField.Type == esriFieldType.esriFieldTypeDouble ||
pField.Type == esriFieldType.esriFieldTypeSingle) //判断类型
{
IGeoDataset pGeoDataset = pFeatureLayer as IGeoDataset;
pEnvelope = pGeoDataset.Extent;
//设置空间参考系
ISpatialReference pSpatialReference;
pSpatialReference = pGeoDataset.SpatialReference;
//选择生成TIN的输入类型
esriTinSurfaceType pSurfaceTypeCount = esriTinSurfaceType.esriTinMassPoint;
switch (mTINType.Text)
{
case "点":
pSurfaceTypeCount = esriTinSurfaceType.esriTinMassPoint;
break;
case "直线":
pSurfaceTypeCount = esriTinSurfaceType.esriTinSoftLine;
break;
case "光滑线":
pSurfaceTypeCount = esriTinSurfaceType.esriTinHardLine;
break;
}
//创建TIN
pTin.InitNew(pEnvelope);
object missing = Type.Missing;
//生成TIN
pTin.AddFromFeatureClass(pFeatureClass, pQueryFilter, pField, pField, pSurfaceTypeCount, ref missing);
pTin.SetSpatialReference(pGeoDataset.SpatialReference);
//创建Tin图层并将Tin图层加入到场景中去
ITinLayer pTinLayer = new TinLayerClass();
pTinLayer.Dataset = pTin as ITin;
mSceneControl.Scene.AddLayer(pTinLayer, true);
}
else
{
MessageBox.Show("该字段的类型不符合构建TIN的条件");
}
}
}
public static IGeometry GetExample15()
{
const double CircleDegrees = 360.0;
const int CircleDivisions = 36;
const double VectorComponentOffset = 0.0000001;
const double CircleRadius = 9.5;
const int PointCount = 100;
const double UpperZMin = 7;
const double UpperZMax = 10;
const double LowerZMin = 0;
const double LowerZMax = 3;
//Extrusion: Circle Shaped Base Geometry Extruded Between Two Different TIN-Based Functional Surfaces
IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();
//Base Geometry
IPointCollection polygonPointCollection = new PolygonClass();
IPoint originPoint = GeometryUtilities.ConstructPoint3D(0, 0, 0);
IVector3D upperAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, 10);
IVector3D lowerAxisVector3D = GeometryUtilities.ConstructVector3D(0, 0, -10);
lowerAxisVector3D.XComponent += VectorComponentOffset;
IVector3D normalVector3D = upperAxisVector3D.CrossProduct(lowerAxisVector3D) as IVector3D;
normalVector3D.Magnitude = CircleRadius;
double rotationAngleInRadians = GeometryUtilities.GetRadians(CircleDegrees / CircleDivisions);
for (int i = 0; i < CircleDivisions; i++)
{
normalVector3D.Rotate(-1 * rotationAngleInRadians, upperAxisVector3D);
IPoint vertexPoint = GeometryUtilities.ConstructPoint2D(originPoint.X + normalVector3D.XComponent,
originPoint.Y + normalVector3D.YComponent);
polygonPointCollection.AddPoint(vertexPoint, ref _missing, ref _missing);
}
IPolygon polygon = polygonPointCollection as IPolygon;
polygon.Close();
IGeometry baseGeometry = polygon as IGeometry;
ITopologicalOperator topologicalOperator = polygon as ITopologicalOperator;
topologicalOperator.Simplify();
//Functional Surfaces
IEnvelope envelope = new EnvelopeClass();
envelope.XMin = -10;
envelope.XMax = 10;
envelope.YMin = -10;
envelope.YMax = 10;
Random random = new Random();
//Upper Functional Surface
ITinEdit upperTinEdit = new TinClass();
upperTinEdit.InitNew(envelope);
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = UpperZMin + (UpperZMax - UpperZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
upperTinEdit.AddPointZ(point, 0);
}
IFunctionalSurface upperFunctionalSurface = upperTinEdit as IFunctionalSurface;
//Lower Functional Surface
ITinEdit lowerTinEdit = new TinClass();
lowerTinEdit.InitNew(envelope);
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = LowerZMin + (LowerZMax - LowerZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
lowerTinEdit.AddPointZ(point, 0);
}
IFunctionalSurface lowerFunctionalSurface = lowerTinEdit as IFunctionalSurface;
IConstructMultiPatch constructMultiPatch = new MultiPatchClass();
constructMultiPatch.ConstructExtrudeBetween(upperFunctionalSurface, lowerFunctionalSurface, baseGeometry);
return constructMultiPatch as IGeometry;
}
public static IGeometry GetExample14()
{
const int PointCount = 100;
const double ZMin = 0;
const double ZMax = 4;
//Extrusion: Square Shaped Base Geometry Extruded Between Single TIN-Based Functional Surface
IGeometryCollection multiPatchGeometryCollection = new MultiPatchClass();
//Base Geometry
IEnvelope envelope = new EnvelopeClass();
envelope.XMin = -10;
envelope.XMax = 10;
envelope.YMin = -10;
envelope.YMax = 10;
IGeometry baseGeometry = envelope as IGeometry;
//Upper Functional Surface
ITinEdit tinEdit = new TinClass();
tinEdit.InitNew(envelope);
Random random = new Random();
for (int i = 0; i < PointCount; i++)
{
double x = envelope.XMin + (envelope.XMax - envelope.XMin) * random.NextDouble();
double y = envelope.YMin + (envelope.YMax - envelope.YMin) * random.NextDouble();
double z = ZMin + (ZMax - ZMin) * random.NextDouble();
IPoint point = GeometryUtilities.ConstructPoint3D(x, y, z);
tinEdit.AddPointZ(point, 0);
}
IFunctionalSurface functionalSurface = tinEdit as IFunctionalSurface;
IConstructMultiPatch constructMultiPatch = new MultiPatchClass();
constructMultiPatch.ConstructExtrudeBetween(functionalSurface, functionalSurface, baseGeometry);
return constructMultiPatch as IGeometry;
}
public void Execute(IArray paramvalues, ITrackCancel trackcancel, IGPEnvironmentManager envMgr, IGPMessages message)
{
// Get Parameters
IGPParameter3 inputParameter = (IGPParameter3)paramvalues.get_Element(0);
IGPParameter3 polygonParameter = (IGPParameter3)paramvalues.get_Element(1);
IGPParameter3 outputParameter = (IGPParameter3)paramvalues.get_Element(2);
IGPParameter3 fieldParameter = (IGPParameter3)paramvalues.get_Element(3);
// UnPackGPValue. This ensures you get the value from either the dataelement or GpVariable (ModelBuilder)
IGPValue inputParameterValue = m_GPUtilities.UnpackGPValue(inputParameter);
IGPValue polygonParameterValue = m_GPUtilities.UnpackGPValue(polygonParameter);
IGPValue outputParameterValue = m_GPUtilities.UnpackGPValue(outputParameter);
IGPValue fieldParameterValue = m_GPUtilities.UnpackGPValue(fieldParameter);
// Decode Input Feature Layers
IFeatureClass inputFeatureClass;
IFeatureClass polygonFeatureClass;
IQueryFilter inputFeatureClassQF;
IQueryFilter polygonFeatureClassQF;
m_GPUtilities.DecodeFeatureLayer(inputParameterValue, out inputFeatureClass, out inputFeatureClassQF);
m_GPUtilities.DecodeFeatureLayer(polygonParameterValue, out polygonFeatureClass, out polygonFeatureClassQF);
if (inputFeatureClass == null)
{
message.AddError(2, "Could not open input dataset.");
return;
}
if (polygonFeatureClass == null)
{
message.AddError(2, "Could not open clipping polygon dataset.");
return;
}
if (polygonFeatureClass.FeatureCount(null) > 1)
{
message.AddWarning("Clipping polygon feature class contains more than one feature.");
}
// Create the Geoprocessor
Geoprocessor gp = new Geoprocessor();
// Create Output Polygon Feature Class
CreateFeatureclass cfc = new CreateFeatureclass();
IName name = m_GPUtilities.CreateFeatureClassName(outputParameterValue.GetAsText());
IDatasetName dsName = name as IDatasetName;
IFeatureClassName fcName = dsName as IFeatureClassName;
IFeatureDatasetName fdsName = fcName.FeatureDatasetName as IFeatureDatasetName;
// Check if output is in a FeatureDataset or not. Set the output path parameter for CreateFeatureClass tool.
if (fdsName != null)
{
cfc.out_path = fdsName;
}
else
{
cfc.out_path = dsName.WorkspaceName.PathName;
}
// Set the output Coordinate System for CreateFeatureClass tool.
// ISpatialReference3 sr = null;
IGPEnvironment env = envMgr.FindEnvironment("outputCoordinateSystem");
// Same as Input
if (env.Value.IsEmpty())
{
IGeoDataset ds = inputFeatureClass as IGeoDataset;
cfc.spatial_reference = ds.SpatialReference as ISpatialReference3;
}
// Use the environment setting
else
{
IGPCoordinateSystem cs = env.Value as IGPCoordinateSystem;
cfc.spatial_reference = cs.SpatialReference as ISpatialReference3;
}
// Remaining properties for Create Feature Class Tool
cfc.out_name = dsName.Name;
cfc.geometry_type = "POLYGON";
// Execute Geoprocessor
gp.Execute(cfc, null);
// Get Unique Field
int iField = inputFeatureClass.FindField(fieldParameterValue.GetAsText());
IField uniqueField = inputFeatureClass.Fields.get_Field(iField);
// Extract Clipping Polygon Geometry
IFeature polygonFeature = polygonFeatureClass.GetFeature(0);
IPolygon clippingPolygon = (IPolygon)polygonFeature.Shape;
// Spatial Filter
ISpatialFilter spatialFilter = new SpatialFilterClass();
spatialFilter.Geometry = polygonFeature.ShapeCopy;
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
// Debug Message
message.AddMessage("Generating TIN...");
// Create TIN
ITinEdit tinEdit = new TinClass();
// Advanced TIN Functions
ITinAdvanced2 tinAdv = (ITinAdvanced2)tinEdit;
try
{
// Initialize New TIN
IGeoDataset gds = inputFeatureClass as IGeoDataset;
tinEdit.InitNew(gds.Extent);
// Add Mass Points to TIN
tinEdit.StartEditing();
tinEdit.AddFromFeatureClass(inputFeatureClass, spatialFilter, uniqueField, uniqueField, esriTinSurfaceType.esriTinMassPoint);
tinEdit.Refresh();
// Get TIN Nodes
ITinNodeCollection tinNodeCollection = (ITinNodeCollection)tinEdit;
// Report Node Count
message.AddMessage("Input Node Count: " + inputFeatureClass.FeatureCount(null).ToString());
message.AddMessage("TIN Node Count: " + tinNodeCollection.NodeCount.ToString());
// Open Output Feature Class
IFeatureClass outputFeatureClass = m_GPUtilities.OpenFeatureClassFromString(outputParameterValue.GetAsText());
// Debug Message
message.AddMessage("Generating Polygons...");
// Create Voronoi Polygons
tinNodeCollection.ConvertToVoronoiRegions(outputFeatureClass, null, clippingPolygon, "", "");
// Release COM Objects
tinEdit.StopEditing(false);
System.Runtime.InteropServices.Marshal.ReleaseComObject(tinNodeCollection);
System.Runtime.InteropServices.Marshal.ReleaseComObject(tinEdit);
}
catch (Exception ex)
{
message.AddError(2, ex.Message);
}
}
/// <summary>
/// 根据生成的featureclass动态生成tin
/// </summary>
/// <params name="pFeatureClass"></params>
/// <params name="pField"></params>
/// <params name="pPath"></params>
/// <returns></returns>
private ITin CreateTin(IFeatureClass pFeatureClass, IField pField, string pPath)
{
IGeoDataset pGeoDataset = pFeatureClass as IGeoDataset;
ITinEdit pTinEdit = new TinClass();
pTinEdit.InitNew(pGeoDataset.Extent);
object pObj = Type.Missing;
pTinEdit.AddFromFeatureClass(pFeatureClass, null, pField, null, esriTinSurfaceType.esriTinMassPoint, ref pObj);
pTinEdit.SaveAs(pPath, ref pObj);
pTinEdit.Refresh();
return pTinEdit as ITin;
}
