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zzahkj

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[交流] ArcEngine如何生成限制边界的tin?

Public Sub CreateTin()

      '//变量定义

Dim pWorkspaceFact As IWorkspaceFactory

Set pWorkspaceFact = New ShapefileWorkspaceFactory

Dim pWorkspace As IWorkspace

   '//寻找文件路径,打开数据

Set pWorkspace = pWorkspaceFact.OpenFromFile("c:\shapefiledata", 0)

Dim pFeatureWorkspace As IFeatureWorkspace

Set pFeatureWorkspace = pWorkspace

Dim pFeatClass As IFeatureClass

Set pFeatClass = pFeatureWorkspace.OpenFeatureClass("shapefilefile.shp"

  '//保证加载的数据是tin格式的

Dim pFLayer As IFeatureLayer

Set pFLayer = New FeatureLayer

Set pFLayer.FeatureClass = pFeatClass

Dim pFields As IFields

Set pFields = pFeatClass.Fields

Dim pHeightField As IField

Set pHeightField = pFields.Field(pFields.FindField(pFeatClass.ShapeFieldName))

Dim pGDS As IGeoDataset

Set pGDS = pFeatClass

Dim pEnv As IEnvelope

Set pEnv = pGDS.Extent

Set pEnv.SpatialReference = pGDS.SpatialReference

Dim pTinEdit As ITinEdit

Set pTinEdit = New Tin

pTinEdit.InitNew pEnv

pTinEdit.AddFromFeatureClass pFeatClass, Nothing, pHeightField, Nothing, esriTinMassPoint

pTinEdit.SaveAs "c:\Shapfiledata\data_tin"

pTinEdit.StopEditing False

End Sub
这个代码是生成TIN的,但是我想做一个能够以一个面状图层限制输出的tin边界,我该如何做?
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