リファレンス · 立体の星座 (視差から星を空間に置き、誤差の範囲と地球からの視線を示す)

`Constellation3D`型

リファレンスの説明と例は英語です。見出しと目次は日本語です。

A constellation's figure in space.

インポート

import type { Constellation3D } from "@johnmorrisdotca/hoshi-stars/constellation-3d";

定義

interface Constellation3D {
    constellation: Constellation;
    viewpoint: {
        name: string | undefined;
        earth: Point3;
    };
    stars: StarIn3D[];
    segments: Array<[
        number,
        number
    ]>;
    counts: Record<DistanceQuality, number>;
    frame: {
        centre: Point3;
        up: Point3;
    };
    radius: number;
}

メンバー

名前	型	説明
`constellation`	`Constellation`	The constellation.
`viewpoint`	`{ name: string \| undefined; earth: Point3; }`	The viewpoint: its name where it is a star, and where the Earth is (`earth`), both relative to the viewpoint, which is the origin.
`stars`	`StarIn3D[]`	The stars of the figure, each once, in the figure's order (the viewpoint star itself is left out).
`segments`	`[number, number][]`	The lines of the figure as pairs of indexes into `stars`.
`counts`	`Record<DistanceQuality, number>`	How many stars have each quality of distance.
`frame`	`{ centre: Point3; up: Point3; }`	The direction from the viewpoint to the middle of the figure, and the direction of "up" (celestial north, turned square to it): a unit vector each. From the middle of the figure looking along `centre` with `up` up, east is on the left, as on a sky chart.
`radius`	`number`	How far the figure's stars lie from `centre`, in degrees, at the most: the figure's angular radius.

例

import { constellationIn3D, type Constellation3D } from "@johnmorrisdotca/hoshi-stars/constellation-3d";

const orion: Constellation3D = constellationIn3D("Ori");
console.log(orion.stars.length, orion.segments.length, orion.counts);

8 8 { good: 0, fair: 1, rough: 6, none: 1 }

出力（このページを作ったときに実行した結果）

ソースを見る GitHub で編集@johnmorrisdotca/hoshi-stars 0.47.0 のソースから作成しました。

この日本語は、まだ日本語を母語とする方の確認を受けていません。訂正を歓迎します。

Constellation3D型

定義

メンバー

例

`Constellation3D`型