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Constructs a Delaunay triangulation based on input points and breaklines.

The surface model may be output in a variety of representations, such as a triangulated irregular network (TIN), TIN vertices, triangles, digital elevation model (DEM), and contours. Because the surface model is a Delaunay triangulation, it can also be output as its dual – a Voronoi diagram.

When you need multiple representations of a surface model, this transformer is more efficient than using separate transformers.

Input Ports

Output Ports





Draped Features

Output Contours

Use Surface Model File


Usage Notes

It is important to note that if the only thing you want to do with an existing surface model is output information, then you must route a feature into the surface model. The easiest way to do this is to simply use the Creator transformer and route a single feature with a null geometry into the DrapeFeatures input port.

Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Transformer Categories


FME Licensing Level

FME Professional edition and above


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Tags Keywords: MBR "minimum bounding rectangle" SurfaceGeneralizer pointcloud