功能：创建TIN
参数：
pFeatureClass点要素类
pFieldZ字段
pPath路径
public ITin Create_TIN(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.esriTinHardLine, ref pObj);
if (File.Exists(pPath))
{
Directory.Delete(pPath);
}
pTinEdit.SaveAs(pPath, ref pObj);
pTinEdit.Refresh();
return pTinEdit as ITin;
}
