# DO NOT EDIT - This file is being maintained by Chef
MAP
<% if @extension == "os_sv_png" -%>
  OUTPUTFORMAT
    NAME "os_sv_png"
    DRIVER AGG/PNG
    MIMETYPE "image/png"
    IMAGEMODE RGB
    EXTENSION "png"
    FORMATOPTION "COMPRESSION=9"
    FORMATOPTION "PALETTE_FORCE=on"
    FORMATOPTION "PALETTE=/srv/imagery/common/ossv-palette.txt"
  END
<% end -%>
<% if @extension == "os_sv_diff_png" -%>
  OUTPUTFORMAT
    NAME "os_sv_diff_png"
    DRIVER AGG/PNG
    MIMETYPE "image/png"
    IMAGEMODE RGBA
    EXTENSION "png"
    FORMATOPTION "COMPRESSION=9"
  END
<% end -%>

  NAME "map-<%= @layer %>"
  STATUS ON
  SIZE 256 256
  UNITS METERS
  <% if @background_colour -%>
  IMAGECOLOR <%= @background_colour %>
  <% end -%>
  IMAGETYPE <%= @extension %>
    PROJECTION
    "init=<%= @projection.downcase %>"
  END

  LAYER
    NAME "<%= @layer %>"
    DATA "<%= @source %>"
    PROJECTION
    <% if @projection == "EPSG:27700" -%>
      <%# Override EPSG:27700 to use accurate nadgrid %>
      "+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy +datum=OSGB36 +units=m +no_defs +nadgrids=/srv/imagery/common/ostn02-ntv2-data/OSTN02_NTv2.gsb"
    <% else -%>
      "init=<%= @projection.downcase %>"
    <% end -%>
    END
    STATUS       DEFAULT
    TYPE         RASTER
    PROCESSING   "RESAMPLE=AVERAGE"
    PROCESSING   "CLOSE_CONNECTION=DEFER"
  END # layer
END