Add some straits (under Naturals)

Also adds the scripts used to generate them.

media/attribution.js

@@ -15294,6 +15294,13 @@ const attributionData = {
                 "openstreetmap"
             ]
         },
+        {
+            prefix: "./media/naturals/straits",
+            all: "https://www.naturalearthdata.com/downloads/10m-physical-vectors/",
+            authors: [
+                "naturalearth"
+            ]
+        },
         {
             prefix: "./media/food/plants/",
             files: [

media/naturals/straits/Strait of Dover.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.2" baseProfile="tiny" width="800" height="1256" viewBox="0 0 800 1256" stroke-linecap="round" stroke-linejoin="round">
+<g id="ne_10m_land">
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+</g>
+</svg>

media/naturals/straits/Strait of Gibraltar.svg

@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.2" baseProfile="tiny" width="800" height="663" viewBox="0 0 800 663" stroke-linecap="round" stroke-linejoin="round">
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+</g>
+</svg>

media/naturals/straits/Strait of Hormuz.svg

@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.2" baseProfile="tiny" width="800" height="470" viewBox="0 0 800 470" stroke-linecap="round" stroke-linejoin="round">
+<g id="ne_10m_land">
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media/naturals/straits/Strait of Messina.svg

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+</g>
+</svg>

media/naturals/straits/Strait of Otranto.svg

@@ -0,0 +1,7 @@
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+<svg xmlns="http://www.w3.org/2000/svg" version="1.2" baseProfile="tiny" width="800" height="936" viewBox="0 0 800 936" stroke-linecap="round" stroke-linejoin="round">
+<g id="ne_10m_land">
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+<path d="M 791.2668 933.4144 798.5975 931.7986 798.9821 931.626 799 933.3307 791.2668 933.4144 Z"/>
+</g>
+</svg>

presets/naturals.js

@@ -894,6 +894,8 @@ const globalCityData = [
     ["Beijing", 16426832679.115694, 178940.11723688344],
 ]
 
+const straitData = [["Strait of Dover", 31174983454.928658, 222577.01735751258], ["Strait of Gibraltar", 4012438156.156927, 55658.19643643095], ["Strait of Hormuz", 25574748008.534893, 122431.35146918982], ["Strait of Messina", 97316549.67370307, 11131.941670965367], ["Strait of Otranto", 30353100830.64735, 189202.32829987607], ["Strait of Juan de Fuca", 36469939347.95791, 178049.49203886717]]
+
 function makePlanet(name, diameter, mass, image) {
     return {
         name: name,
@@ -1108,6 +1110,15 @@ function makeNaturals() {
         "Global Cities",
         false
     ));
+
+    results.push(makeGIS(
+        straitData.sort((s1, s2) => {
+            return s1[0].localeCompare(s2[0])
+        }),
+        "Straits",
+        false
+    ));
+
     results.sort((b1, b2) => {
         e1 = b1.constructor();
         e2 = b2.constructor();

scripts/mapshaper/straits.json

@@ -0,0 +1,49 @@
+{
+    "name": "Straits",
+    "directory": "/media/naturals/straits/",
+    "shapefile": "E:/macrovision/mapshaper/straits/ne_10m_land.shp",
+    "items": [
+        {
+            "name": "Strait of Dover",
+            "lat0": 50,
+            "lon0": 0,
+            "lat1": 52,
+            "lon1": 2
+        },
+        {
+            "name": "Strait of Gibraltar",
+            "lat0": 35.7,
+            "lon0": -6.1,
+            "lat1": 36.2,
+            "lon1": -5.3
+        },
+        {
+            "name": "Strait of Hormuz",
+            "lat0": 26.1,
+            "lon0": 55.2,
+            "lat1": 27.2,
+            "lon1": 57.3
+        },
+        {
+            "name": "Strait of Messina",
+            "lat0": 38.2,
+            "lon0": 15.6,
+            "lat1": 38.3,
+            "lon1": 15.7
+        },
+        {
+            "name": "Strait of Otranto",
+            "lat0": 39.8,
+            "lon0": 17.9,
+            "lat1": 41.5,
+            "lon1": 19.8
+        },
+        {
+            "name": "Strait of Juan de Fuca",
+            "lat0": 48.1,
+            "lon0": -125.1,
+            "lat1": 49.7,
+            "lon1": -122.3
+        }
+    ]
+}

scripts/mapshaper/straits.py

@@ -0,0 +1,42 @@
+import json
+import sys
+import subprocess
+
+config = json.load(open(sys.argv[1]))
+results = []
+
+for item in config["items"]:
+    lon0 = item["lon0"]
+    lat0 = item["lat0"]
+    lon1 = item["lon1"]
+    lat1 = item["lat1"]
+
+    center_lat = (lat0 + lat1) / 2
+    center_lon = (lon0 + lon1) / 2
+
+    path = "../../" + config["directory"] + "/" + item["name"] + ".svg"
+
+    CMD = """\
+    mapshaper -i {7} \
+    -rectangle bbox={0},{1},{2},{3} name=rect \
+    -clip rect target=ne_10m_land \
+    -proj crs="+proj=nsper +h=10000000 +lon_0={4} +lat_0={5}" target=ne_10m_land,rect \
+    -each 'console.log(this.bounds.concat([this.area]))' target=rect \
+    -o "{6}" target=ne_10m_land
+    """
+
+    prepared = CMD.format(lon0, lat0, lon1, lat1, center_lon, center_lat, path, config["shapefile"])
+    print(prepared)
+    result = subprocess.check_output(
+        prepared,
+        shell=True
+    )
+
+    data = json.loads(result.decode("utf-8"))
+
+    height = data[3] - data[1]
+    area = data[4]
+
+    results.append([item["name"], area, height])
+
+print(json.dumps(results))