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Chikyu Earth地球

A line-drawn globe of the world's countries that turns at the Earth's own rate, with an optional realistic Earth from space and markers for any place.

Chikyu is the Japanese word 地球 for the Earth. About the name

Contents

Reference · The realistic Earth's pure parts

countrySpotsfunction

Spreads points over each named country's land, about 48 to a country on an even grid of longitude and latitude, so that a view can find the middle of the part of it in sight and how large that part is. A polygon too small for the grid gets one point, at the middle of its outline. Made once, when the outlines arrive.

Import it

import { countrySpots } from "@johnmorrisdotca/chikyu-earth/realistic";

Definition

function countrySpots(shapes: { features: readonly NamedShape[]; }): CountrySpots

Parameters

NameTypeDescription
shapes{ features: readonly NamedShape[]; }

The outlines, as chizu's world-geo has them.

Returns

CountrySpots

The countries and their points.

Examples

import { countrySpots } from "@johnmorrisdotca/chikyu-earth/realistic";

const square = { properties: { code: "A", name: "Square" }, geometry: { type: "Polygon", coordinates: [[[0, 0], [10, 0], [10, 10], [0, 10], [0, 0]]] } };
const spots = countrySpots({ features: [square] });
console.log(spots.countries[0]?.points.length! / 4);
49

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/chikyu-earth 0.51.1.