DrapeVoid

encloses a voided area of the TIN surface. the boundary <i>LineStrings</i> of the <i>Polygon</i> behave as breaklines in that triangles in the <i>Patches</i> attribute of the <i>TIN</i> value must be adjusted so that void boundary becomes an edge of two or more triangles. However, for drape voids, the elevation of the original TIN surface takes precedence over. The area bounded by TIN elements having a <i>'</i>break void', 'drape void', 'void' and 'hole' element type are still considered to be part of the TIN surface, rather than a hole bounded by an interior boundary of the surface. This distinction is significant when merging two TIN surfaces.