[postgis-tickets] [PostGIS] #3655: Infinite line defined by two points

[PostGIS]

#3655: Infinite line defined by two points
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 Reporter:  stefanpetrea   |      Owner:  pramsey
     Type:  enhancement    |     Status:  new
 Priority:  low            |  Milestone:  PostGIS 2.3.1
Component:  postgis        |    Version:  2.3.x
 Keywords:  infinite,line  |
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 It would be useful to have the ability to build an infinite line that
 passes through two points.

 Some people need find point that would lie on a segment's continuation(for
 example if they need to extend that segment indefinitely and see if it
 would hit a different geometry along the way, maybe a polygon). And
 currently it seems that the way this is done is
 [http://gis.stackexchange.com/a/33084/22412 by computing the segment's
 bearing] and new length, and are extending their lines that way.

 Since PostgreSQL has `+/- Infinity`
 [https://www.postgresql.org/docs/9.4/static/datatype-numeric.html
 #DATATYPE-FLOAT described in the docs] for floating point types, maybe
 those could be used to define such a line.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3655>
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