The Decompose to Triangles operator automatically splits area objects into triangles. The triangles are created using the Delaunay criterion, which seeks to maximize the minimum angle of each triangle. This operator is often used to split area objects into triangles to allow computations or to create centroids that fall within areas. See the discussion of such usage in the Decompose to Convex Parts topic.
Suppose we have an area that we wish to decompose into triangles.
After running the operator the area will be replaced with two triangular areas.
The operator can, of course, be used with considerably more complex areas, such as those representing geographic entities such as the island shown above, located off the coast of Mexico.
Decomposing it into triangles results in many triangles. The triangles are created using the coordinates that define the area as vertices for the triangles.
Notes
ยท The transfer of data fields to the new triangular areas will be governed by the Transfer Rules for the fields.
See Also