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improve rivers #45

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improve rivers #45

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8 changes: 4 additions & 4 deletions config.json
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@
"combine_below": 15
},
"water_lines_labels": {
"minzoom": 4,
"minzoom": 13,
"maxzoom": 14,
"simplify_below": 14,
"simplify_level": 0.0002,
Expand Down Expand Up @@ -140,8 +140,8 @@
"water_polygons": {
"minzoom": 4,
"maxzoom": 14,
"simplify_below": 14,
"simplify_level": 0.0001,
"simplify_below": 12,
"simplify_level": 0.00015,
"simplify_ratio": 2
},
"ocean": {
Expand All @@ -164,7 +164,7 @@
"write_to": "ocean"
},
"water_polygons_labels": {
"minzoom": 14,
"minzoom": 10,
"maxzoom": 14,
"sort_z_level_ascending": false
},
Expand Down
8 changes: 6 additions & 2 deletions process.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -407,9 +407,13 @@ function process_water_polygons(way_area)
Attribute("kind", kind)
AttributeNumeric("way_area", way_area)
ZOrder(way_area)
if Holds("name") then
-- don't show river bodys and drop all small polygons always
if Holds("name") and not is_river and way_area > 2500000 then
-- show water poly labels only if they
-- are very big already
labelmz = math.max(mz, zmin_for_area(50, way_area))
LayerAsCentroid("water_polygons_labels")
MinZoom(14)
MinZoom(labelmz)
Attribute("kind", kind)
AttributeNumeric("way_area", way_area)
ZOrder(way_area)
Expand Down