Triangle: -A switch (original) (raw)

The -A switch

Assigns an additional attribute to each triangle that identifies what segment-bounded region each triangle belongs to. (See the.ele file format description for a description of triangle attributes.)
Attributes are assigned to regions by the .poly file; see the.poly file format description for details.
If a region is not explicitly marked by the .poly file, triangles in that region are assigned an attribute of zero.
The -A switch has an effect only when the -p switch is used and the-r switch is not.