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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

pointOnEarthfunction

The longitude and latitude (degrees) under a point of the box, or undefined where the box shows the sky.

Import it

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

Definition

function pointOnEarth(camera: TileCamera, x: number, y: number): { lon: number; lat: number; } | undefined

Parameters

NameTypeDescription
cameraTileCamera

The camera.

xnumber

Across the box, CSS pixels from its left.

ynumber

Down the box, CSS pixels from its top.

Returns

{ lon: number; lat: number; } | undefined

The longitude and latitude in degrees under that point, or undefined where the box shows the sky.

Examples

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

console.log(pointOnEarth({ lon: 10, lat: 20, width: 800, height: 600, panX: 0, panY: 0, radius: 900 }, 400, 300));
{ lon: 10, lat: 20 }

What it prints (run when this page was built)

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