@threlte/xr/dist/plugins/teleportControls/context.js

Tools to more easily create VR and AR experiences with Threlte

import { Raycaster } from 'three';
import { getContext, setContext } from 'svelte';
import { defaultComputeFunction } from './compute';
const handContextKeys = {
    left: Symbol('teleport-controls-context-left-hand'),
    right: Symbol('teleport-controls-context-right-hand')
};
const contextKey = Symbol('teleport-controls-context');
export const getHandContext = (hand) => {
    return getContext(handContextKeys[hand]);
};
export const setHandContext = (hand, context) => {
    setContext(handContextKeys[hand], context);
};
export const useTeleportControls = () => {
    return getContext(contextKey);
};
export const createTeleportContext = (compute) => {
    const addSurface = (mesh, events) => {
        // check if the object is already in the list
        if (context.interactiveObjects.indexOf(mesh) > -1) {
            return;
        }
        context.interactiveObjects.push(mesh);
        context.surfaces.set(mesh.uuid, mesh);
        context.dispatchers.set(mesh, events);
    };
    const removeSurface = (mesh) => {
        const index = context.interactiveObjects.indexOf(mesh);
        context.interactiveObjects.splice(index, 1);
        context.surfaces.delete(mesh.uuid);
        context.dispatchers.delete(mesh);
    };
    const addBlocker = (mesh) => {
        // check if the object is already in the list
        if (context.interactiveObjects.indexOf(mesh) > -1) {
            return;
        }
        context.interactiveObjects.push(mesh);
        context.blockers.set(mesh.uuid, mesh);
    };
    const removeBlocker = (mesh) => {
        const index = context.interactiveObjects.indexOf(mesh);
        context.interactiveObjects.splice(index, 1);
        context.blockers.delete(mesh.uuid);
    };
    const context = {
        interactiveObjects: [],
        surfaces: new Map(),
        blockers: new Map(),
        dispatchers: new WeakMap(),
        raycaster: new Raycaster(),
        compute: compute ?? defaultComputeFunction,
        addBlocker,
        removeBlocker,
        addSurface,
        removeSurface
    };
    setContext(contextKey, context);
    return context;
};