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"use client";
import { useRef, useMemo } from "react";
import { Canvas, useFrame } from "@react-three/fiber";
import { useTexture } from "@react-three/drei";
import type { Group, Texture } from "three";
function toRad(d: number) { return (d * Math.PI) / 180; }
function RotatingSphere({
mapSrc,
cloudsSrc,
cloudsAlphaSrc,
specularSrc,
tiltDeg = 23.4,
speed = 0.015,
}: {
mapSrc: string;
cloudsSrc?: string;
cloudsAlphaSrc?: string;
specularSrc?: string;
tiltDeg?: number;
speed?: number; // radians per second
}) {
const group = useRef<Group>(null!);
// Always load valid URLs to avoid loader errors; fall back to base map
const maps = useTexture([
mapSrc,
specularSrc ?? mapSrc,
cloudsSrc ?? mapSrc,
cloudsAlphaSrc ?? mapSrc,
]) as unknown as [
Texture,
Texture | undefined,
Texture | undefined,
Texture | undefined
];
const [map, spec, clouds, cloudsAlpha] = maps;
const cloudMat = useMemo(() => ({ transparent: true, depthWrite: false }), []);
useFrame((_s, delta) => {
if (!group.current) return;
group.current.rotation.y += speed * delta; // slow, continuous
});
return (
<group ref={group} rotation={[0, 0, toRad(tiltDeg)]}>
<mesh>
<sphereGeometry args={[1, 128, 128]} />
{spec ? (
// eslint-disable-next-line react/jsx-no-undef
<meshPhongMaterial map={map} specularMap={spec} shininess={7} />
) : (
// eslint-disable-next-line react/jsx-no-undef
<meshLambertMaterial map={map} />
)}
</mesh>
{clouds && (
<mesh scale={1.008}>
<sphereGeometry args={[1, 128, 128]} />
{/* eslint-disable-next-line react/jsx-no-undef */}
<meshLambertMaterial map={clouds} alphaMap={cloudsAlpha} {...cloudMat} />
</mesh>
)}
</group>
);
}
export function PlanetCanvas({
mapSrc,
cloudsSrc,
cloudsAlphaSrc,
specularSrc,
camera = [0, 0, 2.8],
tiltDeg,
speed,
}: {
mapSrc: string;
cloudsSrc?: string;
cloudsAlphaSrc?: string;
specularSrc?: string;
camera?: [number, number, number];
tiltDeg?: number;
speed?: number;
}) {
return (
<div className="absolute inset-0 rounded-3xl" aria-hidden>
<Canvas
camera={{ position: camera, fov: 45 }}
style={{ width: "100%", height: "100%" }}
onCreated={({ gl }) => {
// Ensure planet fully fits on very small containers
gl.setPixelRatio(Math.min(window.devicePixelRatio, 2));
}}
>
<ambientLight intensity={0.45} />
<directionalLight position={[4, 4, 6]} intensity={0.9} color="#fff5e1" />
<directionalLight position={[-6, -3, -2]} intensity={0.25} color="#a7f3d0" />
<RotatingSphere
mapSrc={mapSrc}
cloudsSrc={cloudsSrc}
cloudsAlphaSrc={cloudsAlphaSrc}
specularSrc={specularSrc}
tiltDeg={tiltDeg}
speed={speed}
/>
</Canvas>
</div>
);
}
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