1 files changed, 55 insertions, 0 deletions
diff --git a/perllib/FixMyStreet/Map/UKCouncilWMTS.pm b/perllib/FixMyStreet/Map/UKCouncilWMTS.pm
new file mode 100644
index 000000000..53b6859bf
--- /dev/null
+++ b/perllib/FixMyStreet/Map/UKCouncilWMTS.pm
@@ -0,0 +1,55 @@
+package FixMyStreet::Map::UKCouncilWMTS;
+use base 'FixMyStreet::Map::WMTSBase';
+
+use strict;
+
+sub zoom_parameters {
+    my $self = shift;
+    my $params = {
+        zoom_levels    => scalar $self->scales,
+        default_zoom   => $self->default_zoom,
+        min_zoom_level => 0,
+        id_offset      => 0,
+    };
+    return $params;
+}
+
+sub tile_parameters {
+    my $self = shift;
+    my $params = {
+        urls            => $self->urls,
+        layer_names     => $self->layer_names,
+        wmts_version    => '1.0.0',
+        layer_style     => 'default',
+        matrix_set      => 'default028mm',
+        suffix          => '.png', # appended to tile URLs
+        size            => 256, # pixels
+        dpi             => 96,
+        inches_per_unit => 39.37, # BNG uses metres
+        projection      => 'EPSG:27700',
+        origin_x        => -5220400.0,
+        origin_y        => 4470200.0,
+    };
+    return $params;
+}
+
+# Reproject a WGS84 lat/lon into BNG easting/northing
+sub reproject_from_latlon($$$) {
+    my ($self, $lat, $lon) = @_;
+    # do not try to reproject if we have no co-ordindates as convert breaks
+    return (0.0, 0.0) if $lat == 0 && $lon == 0;
+    my ($x, $y) = Utils::convert_latlon_to_en($lat, $lon);
+    return ($x, $y);
+}
+
+# Reproject a BNG easting/northing into WGS84 lat/lon
+sub reproject_to_latlon($$$) {
+    my ($self, $x, $y) = @_;
+    return (0,0) if $x<0 || $y<0;
+    my ($lat, $lon) = Utils::convert_en_to_latlon($x, $y);
+    return ($lat, $lon);
+}
+
+sub map_template { 'wmts' }
+
+1;