Use visvalingam for ocean and admin boundaries

Author: systemed

resources/config-openmaptiles.json

@@ -1,7 +1,7 @@
 {
 	"layers": {
 		"place":            { "minzoom":  0, "maxzoom": 14 },
-		"boundary":         { "minzoom":  0, "maxzoom": 14, "simplify_below": 12, "simplify_level": 0.0003, "simplify_ratio": 2 },
+		"boundary":         { "minzoom":  0, "maxzoom": 14, "simplify_below": 12, "simplify_level": 0.0003, "simplify_ratio": 2, "simplify_algorithm": "visvalingam" },
 
 		"poi":              { "minzoom": 12, "maxzoom": 14 },
 		"poi_detail":       { "minzoom": 14, "maxzoom": 14, "write_to": "poi"},
@@ -17,7 +17,7 @@
 		"building":          { "minzoom": 13, "maxzoom": 14 },
 
 		"water":             { "minzoom": 6,  "maxzoom": 14, "simplify_below": 12, "simplify_level": 0.0003, "simplify_ratio": 2},
-		"ocean":             { "minzoom": 0,  "maxzoom": 14, "source": "coastline/water_polygons.shp", "filter_below": 12, "filter_area": 0.5, "simplify_below": 13, "simplify_level": 0.0001, "simplify_ratio": 2, "write_to": "water" },
+		"ocean":             { "minzoom": 0,  "maxzoom": 14, "source": "coastline/water_polygons.shp", "filter_below": 12, "filter_area": 0.5, "simplify_below": 13, "simplify_level": 0.0001, "simplify_ratio": 2, "simplify_algorithm": "visvalingam", "write_to": "water" },
 		"water_name":        { "minzoom": 14, "maxzoom": 14 },
 		"water_name_detail": { "minzoom": 14, "maxzoom": 14, "write_to": "water_name" },