`SatelliteScreen`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。

Where a satellite is on the screen now: in CSS pixels from the view's top left (which may lie outside the box), whether it can be seen, which edge it lies beyond, whether it is behind the camera, whether the Earth hides it, and how high it is.

インポート

import type { SatelliteScreen } from "@johnmorrisdotca/chikyu-earth/space";

定義

interface SatelliteScreen {
    x: number;
    y: number;
    visible: boolean;
    heightKm: number;
    edge: ScreenEdge | null;
    behind: boolean;
    occluded: boolean;
    estimated: boolean;
}

メンバー

名前	型	説明
`x`	`number`
`y`	`number`
`visible`	`boolean`	Inside the box, in front of the camera and not hidden by the Earth.
`heightKm`	`number`	Height above the mean Earth radius, in kilometres, at the moment drawn.
`edge`	`ScreenEdge \| null`	The edge the satellite lies beyond, or `null` when its place is inside the box. Behind the camera, the edge is the way it lies in the camera's own axes, not the mirrored picture.
`behind`	`boolean`	The satellite is behind the camera. The picture would put it on the opposite side, so `edge` is taken from the camera's own axes.
`occluded`	`boolean`	The Earth hides the satellite: the line from the camera meets the globe before the satellite. False at the limb, in front, and when the satellite is only behind the camera.
`estimated`	`boolean`	Its place is an estimate (`estimate-far`): the moment shown is beyond `maxAgeDays` from its elements.

例

import type { SatelliteScreen } from "@johnmorrisdotca/chikyu-earth/space";

const seen = (place: SatelliteScreen | null): boolean => place !== null && place.visible;
console.log(typeof seen);

function

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/chikyu-earth 0.51.1 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。

SatelliteScreen型

定義

メンバー

例

`SatelliteScreen`型