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Wakusei Planets惑星

The Sun, the planets and their moons as a clean line drawing, a shaded realistic drawing or a painted surface map, with real sizes, tilt and rotation, and the moons where they are at any date and time.

Wakusei is the Japanese word 惑星 for a planet. About the name

Contents

Reference · Where the Sun, Moon and planets are for a date, in two scales, with the camera maths

blendfunction

A frame between two others, t from 0 to 1.

Import it

import { blend } from "@johnmorrisdotca/wakusei-planets/space";

Definition

function blend(a: SpaceFrame, b: SpaceFrame, t: number): SpaceFrame

Parameters

NameTypeDescription
aSpaceFrame

The earlier frame.

bSpaceFrame

The later frame.

tnumber

How far from a to b, from 0 to 1.

Returns

SpaceFrame

The frame at that fraction.

Examples

import { blend, frameAt } from "@johnmorrisdotca/wakusei-planets/space";

const start = Date.UTC(2026, 10, 2);
const middle = blend(frameAt(start), frameAt(start + 1000), 0.5);
console.log(middle.ms - start);
500

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/wakusei-planets 0.24.0.