guoyao-jiankang/public/static/threejs135/js/loaders/LottieLoader.js

( function () {

	class LottieLoader extends THREE.Loader {

		setQuality( value ) {

			this._quality = value;

		}

		load( url, onLoad, onProgress, onError ) {

			const quality = this._quality || 1;
			const texture = new THREE.CanvasTexture();
			texture.minFilter = THREE.NearestFilter;
			const loader = new THREE.FileLoader( this.manager );
			loader.setPath( this.path );
			loader.setWithCredentials( this.withCredentials );
			loader.load( url, function ( text ) {

				const data = JSON.parse( text ); // bodymoving uses container.offetWidth and offsetHeight
				// to define width/height

				const container = document.createElement( 'div' );
				container.style.width = data.w + 'px';
				container.style.height = data.h + 'px';
				document.body.appendChild( container );
				const animation = bodymovin.loadAnimation( {
					container: container,
					animType: 'canvas',
					loop: true,
					autoplay: true,
					animationData: data,
					rendererSettings: {
						dpr: quality
					}
				} );
				texture.animation = animation;
				texture.image = animation.container;
				animation.addEventListener( 'enterFrame', function () {

					texture.needsUpdate = true;

				} );
				container.style.display = 'none';

				if ( onLoad !== undefined ) {

					onLoad( texture );

				}

			}, onProgress, onError );
			return texture;

		}

	}

	THREE.LottieLoader = LottieLoader;

} )();