@threlte/extras/dist/components/environment/utils/useEnvironment.svelte.js

Utilities, abstractions and plugins for your Threlte apps

import { useThrelte } from '@threlte/core';
export const useEnvironment = (scene, environment, isBackground, isEnvironment) => {
    const { invalidate } = useThrelte();
    $effect(() => {
        const currentEnvironment = environment();
        if (currentEnvironment === undefined)
            return;
        const currentScene = scene();
        const { background: lastBackground, environment: lastEnvironment } = currentScene;
        const currentIsBackground = isBackground();
        const currentIsEnvironment = isEnvironment();
        if (currentIsEnvironment) {
            currentScene.environment = currentEnvironment;
        }
        if (currentIsBackground) {
            currentScene.background = currentEnvironment;
        }
        invalidate();
        return () => {
            if (currentIsEnvironment) {
                currentScene.environment = lastEnvironment;
            }
            if (currentIsBackground) {
                currentScene.background = lastBackground;
            }
            invalidate();
        };
    });
};