In your own three.js scene

@johnmorrisdotca/wakusei-planets/painter makes each body as an object of radius 1 that you move, scale and light in a scene of your own. It draws nothing by itself: no renderer, no loop, no clock. It is a perspective-camera version of what <wakusei-body> draws, so the same shaded look and the same painted maps are there.

import * as THREE from "three";
import { painter } from "@johnmorrisdotca/wakusei-planets/painter";

const scene = new THREE.Scene();
const jupiter = painter.make(THREE, "Jupiter", { look: "realistic", invalidate: () => undefined });
scene.add(jupiter.object);
jupiter.object.position.set(40, 0, 0);
jupiter.object.scale.setScalar(2);
jupiter.update({ toSun: [-1, 0, 0], ms: Date.now(), radiusPx: 120 });
console.log(scene.children.length);

1

• look is realistic or painted. A painted body shows the shaded look until its map arrives, then invalidate is called so you draw again.
• Place and scale the object first, then call update at each draw. toSun is the unit direction to the Sun in your scene's axes, and the scene is taken to be equatorial J2000 with y up (x to the vernal equinox). The body is turned about its real pole to its real turn at ms.
• radiusPx is how many CSS pixels across its radius the body is. A sharper picture is fetched only when it would show, and the big one is let go a few seconds after the body shrinks.
• The Sun has billboard: true: turn its object to face the camera so its glow is round.
• painter.moons("Jupiter", ms) gives each moon's place from its planet in planet radii and its size, nearest first. Make a moon the same way (painter.make(THREE, "Io")) and put it at the planet's place plus offset times the planet's drawn radius.
• The pictures come from jsDelivr by default; createPainter({ textureBase, farBase }) points them at your own folder.

The three.js you hand over needs the parts the bodies use, and Group. chikyu-earth's space view takes this painter with setBodyPainter(painter) and draws the Sun, the planets, Pluto and their moons with it (see its guide "The real planets").