[postgis-tickets] [PostGIS] #5084: Bad rasterization of linestring

[PostGIS]

#5084: Bad rasterization of linestring
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  Reporter:  gvuidel  |      Owner:  robe
      Type:  defect   |     Status:  new
  Priority:  high     |  Milestone:  PostGIS 3.0.6
 Component:  raster   |    Version:  3.2.x
Resolution:           |   Keywords:
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Comment (by gvuidel):

 I have found where the problem comes from: in the function
 rt_raster_gdal_rasterize in rt_raster.c

 The extent is supposed to be increased by one pixel (or a half) for
 linestring and point geometries. But in several cases the extent is not
 increased causing a wrong rasterization.
 I propose to simplify the code and always increase the extent when the
 geometry is a linestring or a point as written in the code comments.

 I attach a patch file made from the master branch.

 I have tested on dev branch and 3.2.1 version.
 If needed I can test on other branch/version.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5084#comment:2>
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