arcengine将TIN转DEM的代码
时间: 2023-09-08 07:12:29 浏览: 69
以下是使用 ArcEngine 将 TIN 转换为 DEM 的示例代码:
```csharp
// 创建栅格工作空间
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactory();
IWorkspace workspace = workspaceFactory.OpenFromFile("C:/data", 0); // 替换为你的栅格工作空间路径
// 创建栅格数据集
IRasterWorkspace rasterWorkspace = (IRasterWorkspace)workspace;
IRasterDataset rasterDataset = rasterWorkspace.CreateRasterDataset("dem.tif", "TIFF", originX, originY, cellSize, numCols, numRows, 1, rstPixelType.FPT_FLOAT, null);
// 获取 TIN 数据集
ITinDataset tinDataset = ...; // 替换为你的 TIN 数据集
// 创建 DEM 栅格对象
IRaster2 raster = (IRaster2)rasterDataset.CreateDefaultRaster();
// 获取 DEM 栅格像元大小
IPnt cellSizePnt = new PntClass();
cellSizePnt.SetCoords(cellSize, cellSize);
// 获取 DEM 栅格范围
IEnvelope envelope = new EnvelopeClass();
envelope.PutCoords(minX, minY, maxX, maxY);
// 设置 DEM 栅格环境
IRasterProps rasterProps = (IRasterProps)raster;
rasterProps.Width = numCols;
rasterProps.Height = numRows;
rasterProps.Extent = envelope;
rasterProps.CellSize = cellSizePnt;
// 获取 DEM 栅格编辑对象
IRasterEdit rasterEdit = (IRasterEdit)raster;
// 遍历 TIN 中的三角形
ITin tin = tinDataset.GetTin();
ITinTriangleEnumerator triangleEnumerator = tin.Triangles.GetEnumerator();
while (triangleEnumerator.MoveNext())
{
ITinTriangle triangle = triangleEnumerator.Current;
// 获取三角形的顶点坐标
IPoint[] vertices = new IPoint[3];
vertices[0] = tin.GetPoint(triangle.FromNode);
vertices[1] = tin.GetPoint(triangle.ToNode);
vertices[2] = tin.GetPoint(triangle.OtherNode);
// 计算三角形的高度值
double height = ...; // 替换为你计算高度值的方法
// 将高度值分配给 DEM 栅格像元
for (int i = 0; i < 3; i++)
{
int col = (int)((vertices[i].X - minX) / cellSize);
int row = (int)((maxY - vertices[i].Y) / cellSize);
rasterEdit.Write(col, row, height);
}
}
// 保存 DEM 栅格数据集
rasterEdit.Refresh();
ISaveAs saveAs = (ISaveAs)rasterDataset;
saveAs.SaveAs("C:/data/dem.tif", null);
```
请注意,这只是一个示例代码框架,你需要根据你的具体情况和数据源进行适当的修改和调整。希望对你有所帮助!