nanogl-gltf/lib/elements/TextureInfo.js

gltf loader

import GltfTypes from '../types/GltfTypes';
import Gltf from '../Gltf';
import { Sampler } from 'nanogl-pbr/Input';
import TexCoord from 'nanogl-pbr/TexCoord';
/**
 * The BaseTextureInfo element contains the base properties and methods for TextureInfo, NormalTextureInfo and OcclusionTextureInfo.
 * It contains the texture and the texCoord to use to sample the texture, and a createSampler() method to create a nanogl-pbr Sampler object.
 */
export class BaseTextureInfo {
    constructor() {
        /**
         * nanogl-pbr Sampler object, used to sample the texture.
         */
        this._sampler = null;
    }
    /**
     * Create a nanogl-pbr Sampler object, used to sample the texture.
     * @param id ID or name to use for the sampler, to differentiate multiple samplers on the same Program
     */
    createSampler(id) {
        var _a;
        if (this._sampler === null) {
            const attrib = Gltf.getSemantics().getAttributeName(`TEXCOORD_${this.texCoord}`);
            this._sampler = new Sampler(`tex_${(_a = this.name) !== null && _a !== void 0 ? _a : ''}${id}`, TexCoord.create(attrib));
            this.texture.glTexturePromise.then((t) => this._sampler.set(t));
        }
        return this._sampler;
    }
    /**
     * Parse the BaseTextureInfo data, fill the texture and texCoord properties.
     *
     * Is async as it needs to wait for the texture to be created.
     * @param gltfLoader GLTFLoader to use
     * @param data Data to parse
     */
    async parse(gltfLoader, data) {
        var _a;
        this.texture = await gltfLoader.getElement(GltfTypes.TEXTURE, data.index);
        this.texCoord = (_a = data.texCoord) !== null && _a !== void 0 ? _a : 0;
    }
}
/**
 * The TextureInfo element contains the texture and the texCoord to use to sample the texture.
 */
export default class TextureInfo extends BaseTextureInfo {
    constructor() {
        super(...arguments);
        this.gltftype = GltfTypes.TEXTURE_INFO;
    }
}