threepipe/lib/assetmanager/import/JSONMaterialLoader.js

A 3D viewer framework built on top of three.js in TypeScript with a focus on quality rendering, modularity and extensibility.

import { SimpleJSONLoader } from './SimpleJSONLoader';
import { getEmptyMeta, ThreeSerialization } from '../../utils/serialization';
export class JSONMaterialLoader extends SimpleJSONLoader {
    async loadAsync(url, onProgress) {
        if (!this.viewer)
            throw 'Viewer not set in JSONMaterialLoader.';
        const json = await super.loadAsync(url, onProgress);
        return await JSONMaterialLoader.DeserializeMaterialJSON(json, this.viewer);
    }
    static async DeserializeMaterialJSON(json, viewer, meta, obj) {
        meta = meta || getEmptyMeta();
        const json2 = { ...json };
        if (json.images) {
            if (Array.isArray(json.images))
                meta.images = Object.fromEntries(json.images.map((i) => [i.uuid, i]));
            else
                meta.images = json.images;
            delete json2.images;
        }
        if (json.textures) {
            if (Array.isArray(json.textures))
                meta.textures = Object.fromEntries(json.textures.map((t) => [t.uuid, t]));
            else
                meta.textures = json.textures;
            delete json2.textures;
        }
        if (json.materials) {
            if (Array.isArray(json.materials))
                meta.materials = Object.fromEntries(json.materials.map((m) => [m.uuid, m]));
            else
                meta.materials = json.materials;
            delete json2.materials;
        }
        const resources = await viewer.loadConfigResources(meta);
        return ThreeSerialization.Deserialize(json2, obj || undefined, resources);
    }
}
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