[PostGIS] #5639: ST_DFullyWithin fails when dealing with LINESTRING and POLYGON

[PostGIS]

#5639: ST_DFullyWithin fails when dealing with LINESTRING and POLYGON
---------------------+---------------------------
 Reporter:  Wenjing  |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  medium   |  Milestone:  PostGIS 3.4.2
Component:  postgis  |    Version:  3.4.x
 Keywords:           |
---------------------+---------------------------
 Consider the following statement:

 {{{

 SELECT ST_DFullyWithin(a1, a2, 100)
 FROM ST_GeomFromText('LINESTRING(0 0, 0 1, 1 0, 0 0)') As a1
 ,ST_GeomFromText('POLYGON((0 0, 0 1, 1 0, 0 0))') As a2;
 --actual{f}; expected{t}

 }}}

 According to the definition below, the result of `ST_DFullyWithin(a1, a2,
 100)` is expected to `true`.

 > Returns true if the geometries are entirely within the specified
 distance of one another.

 Because the geometry a1 is fully within each point of a2 in the distance
 of 100. The same as a2 to a1. However, Postgis doesn't consider the
 DFullyWithin relationship. So I believe it is an unexpected behavior here.

 Version:

 {{{
 POSTGIS="3.5.0dev 3.4.0rc1-830-g8f77e8a6b" [EXTENSION] PGSQL="170"
 GEOS="3.13.0dev-CAPI-1.18.0" PROJ="8.2.1 NETWORK_ENABLED=OFF
 URL_ENDPOINT=https://cdn.proj.org USER_WRITABLE_DIRECTORY=/tmp/proj
 DATABASE_PATH=/usr/share/proj/proj.db" LIBXML="2.9.13"
 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5639>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.