[postgis-tickets] [PostGIS] #4397: A function to drape linestring with TIN

[PostGIS]

#4397: A function to drape linestring with TIN
-------------------------+---------------------------
 Reporter:  komzpa       |      Owner:  komzpa
     Type:  enhancement  |     Status:  assigned
 Priority:  medium       |  Milestone:  PostGIS 3.0.0
Component:  postgis      |    Version:  trunk
 Keywords:               |
-------------------------+---------------------------
 per discussion with pramsey:

  - should take a TIN and linestring, promote linestring to have Z
 dimension with default of 0;

  - for all covered points of linestring, set Z by interpolating on
 triangle;

  - for all spots where linestring hits edge of triangle, generate
 intermediate points with Z from triangle.

  - all values outside of TIN should be unchanged.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4397>
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.