made 3d work again

.well-known/matrix/client

@@ -0,0 +1,5 @@
+{
+  "m.homeserver": {
+    "base_url": "https://matrix.kaoscube.org"
+  }
+}

3d.php

@@ -74,15 +74,16 @@
 <div style="height: 5vh; background-color:deeppink;"></div>
 <div class="model0" id="model0" style="width: 80vw; height: 80vh; justify-self: center; background-color: white;"> </div>
 </div>
+
 </center>
 </body>
 
 
 </html>
 
-<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/build/three.min.js"></script> 
+<script src="three.min.js"></script> 
-<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/controls/OrbitControls.js"></script>
+<script src="OrbitControls.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/loaders/STLLoader.js"></script>
+<script src="STLLoader.js"></script>
 
 
 <script type="text/javascript">

STLLoader.js

@@ -1,389 +1,371 @@
-/**
+( function () {
- * @author aleeper / http://adamleeper.com/
+
- * @author mrdoob / http://mrdoob.com/
+	/**
- * @author gero3 / https://github.com/gero3
- *
  * Description: A THREE loader for STL ASCII files, as created by Solidworks and other CAD programs.
  *
  * Supports both binary and ASCII encoded files, with automatic detection of type.
  *
+ * The loader returns a non-indexed buffer geometry.
+ *
  * Limitations:
- * 	Binary decoding ignores header. There doesn't seem to be much of a use for it.
+ *  Binary decoding supports "Magics" color format (http://en.wikipedia.org/wiki/STL_(file_format)#Color_in_binary_STL).
  *  There is perhaps some question as to how valid it is to always assume little-endian-ness.
- * 	ASCII decoding assumes file is UTF-8. Seems to work for the examples...
+ *  ASCII decoding assumes file is UTF-8.
  *
  * Usage:
- * 	var loader = new THREE.STLLoader();
+ *  const loader = new STLLoader();
- * 	loader.addEventListener( 'load', function ( event ) {
+ *  loader.load( './models/stl/slotted_disk.stl', function ( geometry ) {
- *
- * 		var geometry = event.content;
  *    scene.add( new THREE.Mesh( geometry ) );
+ *  });
  *
- * 	} );
+ * For binary STLs geometry might contain colors for vertices. To use it:
- * 	loader.load( './models/stl/slotted_disk.stl' );
+ *  // use the same code to load STL as above
+ *  if (geometry.hasColors) {
+ *    material = new THREE.MeshPhongMaterial({ opacity: geometry.alpha, vertexColors: true });
+ *  } else { .... }
+ *  const mesh = new THREE.Mesh( geometry, material );
+ *
+ * For ASCII STLs containing multiple solids, each solid is assigned to a different group.
+ * Groups can be used to assign a different color by defining an array of materials with the same length of
+ * geometry.groups and passing it to the Mesh constructor:
+ *
+ * const mesh = new THREE.Mesh( geometry, material );
+ *
+ * For example:
+ *
+ *  const materials = [];
+ *  const nGeometryGroups = geometry.groups.length;
+ *
+ *  const colorMap = ...; // Some logic to index colors.
+ *
+ *  for (let i = 0; i < nGeometryGroups; i++) {
+ *
+ *		const material = new THREE.MeshPhongMaterial({
+ *			color: colorMap[i],
+ *			wireframe: false
+ *		});
+ *
+ *  }
+ *
+ *  materials.push(material);
+ *  const mesh = new THREE.Mesh(geometry, materials);
  */
 
+	class STLLoader extends THREE.Loader {
 
-THREE.STLLoader = function () {};
+		constructor( manager ) {
 
-THREE.STLLoader.prototype = {
+			super( manager );
 
-    constructor: THREE.STLLoader,
+		}
 
-    addEventListener: THREE.EventDispatcher.prototype.addEventListener,
+		load( url, onLoad, onProgress, onError ) {
-    hasEventListener: THREE.EventDispatcher.prototype.hasEventListener,
-    removeEventListener: THREE.EventDispatcher.prototype.removeEventListener,
-    dispatchEvent: THREE.EventDispatcher.prototype.dispatchEvent
 
-};
+			const scope = this;
+			const loader = new THREE.FileLoader( this.manager );
+			loader.setPath( this.path );
+			loader.setResponseType( 'arraybuffer' );
+			loader.setRequestHeader( this.requestHeader );
+			loader.setWithCredentials( this.withCredentials );
+			loader.load( url, function ( text ) {
 
-THREE.STLLoader.prototype.load = function (url, callback) {
+				try {
 
-    var scope = this;
+					onLoad( scope.parse( text ) );
 
-    var xhr = new XMLHttpRequest();
+				} catch ( e ) {
 
-    function onloaded( event ) {
+					if ( onError ) {
 
-        if ( event.target.status === 200 || event.target.status === 0 ) {
+						onError( e );
-
-            var geometry = scope.parse( event.target.response || event.target.responseText );
-
-            scope.dispatchEvent( { type: 'load', content: geometry } );
-
-            if ( callback ) callback( geometry );
 
 					} else {
 
-            scope.dispatchEvent( { type: 'error', message: 'Couldn\'t load URL [' + url + ']',
+						console.error( e );
-                response: event.target.responseText } );
+
+					}
+
+					scope.manager.itemError( url );
+
+				}
+
+			}, onProgress, onError );
+
+		}
+
+		parse( data ) {
+
+			function isBinary( data ) {
+
+				const reader = new DataView( data );
+				const face_size = 32 / 8 * 3 + 32 / 8 * 3 * 3 + 16 / 8;
+				const n_faces = reader.getUint32( 80, true );
+				const expect = 80 + 32 / 8 + n_faces * face_size;
+
+				if ( expect === reader.byteLength ) {
+
+					return true;
+
+				} // An ASCII STL data must begin with 'solid ' as the first six bytes.
+				// However, ASCII STLs lacking the SPACE after the 'd' are known to be
+				// plentiful.  So, check the first 5 bytes for 'solid'.
+				// Several encodings, such as UTF-8, precede the text with up to 5 bytes:
+				// https://en.wikipedia.org/wiki/Byte_order_mark#Byte_order_marks_by_encoding
+				// Search for "solid" to start anywhere after those prefixes.
+				// US-ASCII ordinal values for 's', 'o', 'l', 'i', 'd'
+
+
+				const solid = [ 115, 111, 108, 105, 100 ];
+
+				for ( let off = 0; off < 5; off ++ ) {
+
+					// If "solid" text is matched to the current offset, declare it to be an ASCII STL.
+					if ( matchDataViewAt( solid, reader, off ) ) return false;
+
+				} // Couldn't find "solid" text at the beginning; it is binary STL.
+
+
+				return true;
+
+			}
+
+			function matchDataViewAt( query, reader, offset ) {
+
+				// Check if each byte in query matches the corresponding byte from the current offset
+				for ( let i = 0, il = query.length; i < il; i ++ ) {
+
+					if ( query[ i ] !== reader.getUint8( offset + i, false ) ) return false;
+
+				}
+
+				return true;
+
+			}
+
+			function parseBinary( data ) {
+
+				const reader = new DataView( data );
+				const faces = reader.getUint32( 80, true );
+				let r,
+					g,
+					b,
+					hasColors = false,
+					colors;
+				let defaultR, defaultG, defaultB, alpha; // process STL header
+				// check for default color in header ("COLOR=rgba" sequence).
+
+				for ( let index = 0; index < 80 - 10; index ++ ) {
+
+					if ( reader.getUint32( index, false ) == 0x434F4C4F
+        /*COLO*/
+        && reader.getUint8( index + 4 ) == 0x52
+        /*'R'*/
+        && reader.getUint8( index + 5 ) == 0x3D
+        /*'='*/
+					) {
+
+						hasColors = true;
+						colors = new Float32Array( faces * 3 * 3 );
+						defaultR = reader.getUint8( index + 6 ) / 255;
+						defaultG = reader.getUint8( index + 7 ) / 255;
+						defaultB = reader.getUint8( index + 8 ) / 255;
+						alpha = reader.getUint8( index + 9 ) / 255;
 
 					}
 
 				}
 
-    xhr.addEventListener( 'load', onloaded, false );
+				const dataOffset = 84;
+				const faceLength = 12 * 4 + 2;
+				const geometry = new THREE.BufferGeometry();
+				const vertices = new Float32Array( faces * 3 * 3 );
+				const normals = new Float32Array( faces * 3 * 3 );
 
-    xhr.addEventListener( 'progress', function ( event ) {
+				for ( let face = 0; face < faces; face ++ ) {
 
-        scope.dispatchEvent( { type: 'progress', loaded: event.loaded, total: event.total } );
+					const start = dataOffset + face * faceLength;
+					const normalX = reader.getFloat32( start, true );
+					const normalY = reader.getFloat32( start + 4, true );
+					const normalZ = reader.getFloat32( start + 8, true );
 
-    }, false );
+					if ( hasColors ) {
 
-    xhr.addEventListener( 'error', function () {
+						const packedColor = reader.getUint16( start + 48, true );
 
-        scope.dispatchEvent( { type: 'error', message: 'Couldn\'t load URL [' + url + ']' } );
+						if ( ( packedColor & 0x8000 ) === 0 ) {
 
-    }, false );
+							// facet has its own unique color
+							r = ( packedColor & 0x1F ) / 31;
+							g = ( packedColor >> 5 & 0x1F ) / 31;
+							b = ( packedColor >> 10 & 0x1F ) / 31;
 
-    xhr.overrideMimeType('text/plain; charset=x-user-defined');
-    xhr.open( 'GET', url, true );
-    xhr.responseType = "arraybuffer";
-    xhr.send( null );
-
-};
-
-THREE.STLLoader.prototype.parse = function (data) {
-
-
-    var isBinary = function () {
-
-        var expect, face_size, n_faces, reader;
-        reader = new DataView( binData );
-        face_size = (32 / 8 * 3) + ((32 / 8 * 3) * 3) + (16 / 8);
-        n_faces = reader.getUint32(80,true);
-        expect = 80 + (32 / 8) + (n_faces * face_size);
-        return expect === reader.byteLength;
-
-    };
-
-    var binData = this.ensureBinary( data );
-
-    return isBinary()
-        ? this.parseBinary( binData )
-        : this.parseASCII( this.ensureString( data ) );
-
-};
-
-THREE.STLLoader.prototype.parseBinary = function (data) {
-
-    var face, geometry, n_faces, reader, length, normal, i, dataOffset, faceLength, start, vertexstart;
-
-    reader = new DataView( data );
-    n_faces = reader.getUint32(80,true);
-    geometry = new THREE.Geometry();
-    dataOffset = 84;
-    faceLength = 12 * 4 + 2;
-
-    for (face = 0; face < n_faces; face++) {
-
-        start = dataOffset + face * faceLength;
-        normal = new THREE.Vector3(
-            reader.getFloat32(start,true),
-            reader.getFloat32(start + 4,true),
-            reader.getFloat32(start + 8,true)
-        );
-
-        for (i = 1; i <= 3; i++) {
-
-            vertexstart = start + i * 12;
-            geometry.vertices.push(
-                new THREE.Vector3(
-                    reader.getFloat32(vertexstart,true),
-                    reader.getFloat32(vertexstart +4,true),
-                    reader.getFloat32(vertexstart + 8,true)
-                )
-            );
-
-        }
-
-        length = geometry.vertices.length;
-        geometry.faces.push(new THREE.Face3(length - 3, length - 2, length - 1, normal));
-
-    }
-
-    //geometry.computeCentroids();
-    geometry.computeBoundingSphere();
-
-    return geometry;
-
-};
-
-THREE.STLLoader.prototype.parseASCII = function (data) {
-
-    var geometry, length, normal, patternFace, patternNormal, patternVertex, result, text;
-    geometry = new THREE.Geometry();
-    patternFace = /facet([\s\S]*?)endfacet/g;
-
-    while (((result = patternFace.exec(data)) != null)) {
-
-        text = result[0];
-        patternNormal = /normal[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g;
-
-        while (((result = patternNormal.exec(text)) != null)) {
-
-            normal = new THREE.Vector3(parseFloat(result[1]), parseFloat(result[3]), parseFloat(result[5]));
-
-        }
-
-        patternVertex = /vertex[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g;
-
-        while (((result = patternVertex.exec(text)) != null)) {
-
-            geometry.vertices.push(new THREE.Vector3(parseFloat(result[1]), parseFloat(result[3]), parseFloat(result[5])));
-
-        }
-
-        length = geometry.vertices.length;
-        geometry.faces.push(new THREE.Face3(length - 3, length - 2, length - 1, normal));
-
-    }
-
-    geometry.computeCentroids();
-    geometry.computeBoundingBox();
-    geometry.computeBoundingSphere();
-
-    return geometry;
-
-};
-
-THREE.STLLoader.prototype.ensureString = function (buf) {
-
-    if (typeof buf !== "string"){
-        var array_buffer = new Uint8Array(buf);
-        var str = '';
-        for(var i = 0; i < buf.byteLength; i++) {
-            str += String.fromCharCode(array_buffer[i]); // implicitly assumes little-endian
-        }
-        return str;
 						} else {
-        return buf;
+
+							r = defaultR;
+							g = defaultG;
+							b = defaultB;
+
 						}
 
-};
-
-THREE.STLLoader.prototype.ensureBinary = function (buf) {
-
-    if (typeof buf === "string"){
-        var array_buffer = new Uint8Array(buf.length);
-        for(var i = 0; i < buf.length; i++) {
-            array_buffer[i] = buf.charCodeAt(i) & 0xff; // implicitly assumes little-endian
 					}
+
+					for ( let i = 1; i <= 3; i ++ ) {
+
+						const vertexstart = start + i * 12;
+						const componentIdx = face * 3 * 3 + ( i - 1 ) * 3;
+						vertices[ componentIdx ] = reader.getFloat32( vertexstart, true );
+						vertices[ componentIdx + 1 ] = reader.getFloat32( vertexstart + 4, true );
+						vertices[ componentIdx + 2 ] = reader.getFloat32( vertexstart + 8, true );
+						normals[ componentIdx ] = normalX;
+						normals[ componentIdx + 1 ] = normalY;
+						normals[ componentIdx + 2 ] = normalZ;
+
+						if ( hasColors ) {
+
+							colors[ componentIdx ] = r;
+							colors[ componentIdx + 1 ] = g;
+							colors[ componentIdx + 2 ] = b;
+
+						}
+
+					}
+
+				}
+
+				geometry.setAttribute( 'position', new THREE.BufferAttribute( vertices, 3 ) );
+				geometry.setAttribute( 'normal', new THREE.BufferAttribute( normals, 3 ) );
+
+				if ( hasColors ) {
+
+					geometry.setAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );
+					geometry.hasColors = true;
+					geometry.alpha = alpha;
+
+				}
+
+				return geometry;
+
+			}
+
+			function parseASCII( data ) {
+
+				const geometry = new THREE.BufferGeometry();
+				const patternSolid = /solid([\s\S]*?)endsolid/g;
+				const patternFace = /facet([\s\S]*?)endfacet/g;
+				let faceCounter = 0;
+				const patternFloat = /[\s]+([+-]?(?:\d*)(?:\.\d*)?(?:[eE][+-]?\d+)?)/.source;
+				const patternVertex = new RegExp( 'vertex' + patternFloat + patternFloat + patternFloat, 'g' );
+				const patternNormal = new RegExp( 'normal' + patternFloat + patternFloat + patternFloat, 'g' );
+				const vertices = [];
+				const normals = [];
+				const normal = new THREE.Vector3();
+				let result;
+				let groupCount = 0;
+				let startVertex = 0;
+				let endVertex = 0;
+
+				while ( ( result = patternSolid.exec( data ) ) !== null ) {
+
+					startVertex = endVertex;
+					const solid = result[ 0 ];
+
+					while ( ( result = patternFace.exec( solid ) ) !== null ) {
+
+						let vertexCountPerFace = 0;
+						let normalCountPerFace = 0;
+						const text = result[ 0 ];
+
+						while ( ( result = patternNormal.exec( text ) ) !== null ) {
+
+							normal.x = parseFloat( result[ 1 ] );
+							normal.y = parseFloat( result[ 2 ] );
+							normal.z = parseFloat( result[ 3 ] );
+							normalCountPerFace ++;
+
+						}
+
+						while ( ( result = patternVertex.exec( text ) ) !== null ) {
+
+							vertices.push( parseFloat( result[ 1 ] ), parseFloat( result[ 2 ] ), parseFloat( result[ 3 ] ) );
+							normals.push( normal.x, normal.y, normal.z );
+							vertexCountPerFace ++;
+							endVertex ++;
+
+						} // every face have to own ONE valid normal
+
+
+						if ( normalCountPerFace !== 1 ) {
+
+							console.error( 'THREE.STLLoader: Something isn\'t right with the normal of face number ' + faceCounter );
+
+						} // each face have to own THREE valid vertices
+
+
+						if ( vertexCountPerFace !== 3 ) {
+
+							console.error( 'THREE.STLLoader: Something isn\'t right with the vertices of face number ' + faceCounter );
+
+						}
+
+						faceCounter ++;
+
+					}
+
+					const start = startVertex;
+					const count = endVertex - startVertex;
+					geometry.addGroup( start, count, groupCount );
+					groupCount ++;
+
+				}
+
+				geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
+				geometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( normals, 3 ) );
+				return geometry;
+
+			}
+
+			function ensureString( buffer ) {
+
+				if ( typeof buffer !== 'string' ) {
+
+					return THREE.LoaderUtils.decodeText( new Uint8Array( buffer ) );
+
+				}
+
+				return buffer;
+
+			}
+
+			function ensureBinary( buffer ) {
+
+				if ( typeof buffer === 'string' ) {
+
+					const array_buffer = new Uint8Array( buffer.length );
+
+					for ( let i = 0; i < buffer.length; i ++ ) {
+
+						array_buffer[ i ] = buffer.charCodeAt( i ) & 0xff; // implicitly assumes little-endian
+
+					}
+
 					return array_buffer.buffer || array_buffer;
-    } else {
-        return buf;
-    }
-
-};
-
-if ( typeof DataView === 'undefined'){
-
-    DataView = function(buffer, byteOffset, byteLength){
-
-        this.buffer = buffer;
-        this.byteOffset = byteOffset || 0;
-        this.byteLength = byteLength || buffer.byteLength || buffer.length;
-        this._isString = typeof buffer === "string";
-
-    }
-
-    DataView.prototype = {
-
-        _getCharCodes:function(buffer,start,length){
-            start = start || 0;
-            length = length || buffer.length;
-            var end = start + length;
-            var codes = [];
-            for (var i = start; i < end; i++) {
-                codes.push(buffer.charCodeAt(i) & 0xff);
-            }
-            return codes;
-        },
-
-        _getBytes: function (length, byteOffset, littleEndian) {
-
-            var result;
-
-            // Handle the lack of endianness
-            if (littleEndian === undefined) {
-
-                littleEndian = this._littleEndian;
-
-            }
-
-            // Handle the lack of byteOffset
-            if (byteOffset === undefined) {
-
-                byteOffset = this.byteOffset;
 
 				} else {
 
-                byteOffset = this.byteOffset + byteOffset;
+					return buffer;
 
 				}
 
-            if (length === undefined) {
+			} // start
 
-                length = this.byteLength - byteOffset;
+
+			const binData = ensureBinary( data );
+			return isBinary( binData ) ? parseBinary( binData ) : parseASCII( ensureString( data ) );
 
 		}
 
-            // Error Checking
-            if (typeof byteOffset !== 'number') {
-
-                throw new TypeError('DataView byteOffset is not a number');
-
 	}
 
-            if (length < 0 || byteOffset + length > this.byteLength) {
+	THREE.STLLoader = STLLoader;
 
-                throw new Error('DataView length or (byteOffset+length) value is out of bounds');
+} )();
-
-            }
-
-            if (this.isString){
-
-                result = this._getCharCodes(this.buffer, byteOffset, byteOffset + length);
-
-            } else {
-
-                result = this.buffer.slice(byteOffset, byteOffset + length);
-
-            }
-
-            if (!littleEndian && length > 1) {
-
-                if (!(result instanceof Array)) {
-
-                    result = Array.prototype.slice.call(result);
-
-                }
-
-                result.reverse();
-            }
-
-            return result;
-
-        },
-
-        // Compatibility functions on a String Buffer
-
-        getFloat64: function (byteOffset, littleEndian) {
-
-            var b = this._getBytes(8, byteOffset, littleEndian),
-
-                sign = 1 - (2 * (b[7] >> 7)),
-                exponent = ((((b[7] << 1) & 0xff) << 3) | (b[6] >> 4)) - ((1 << 10) - 1),
-
-            // Binary operators such as | and << operate on 32 bit values, using + and Math.pow(2) instead
-                mantissa = ((b[6] & 0x0f) * Math.pow(2, 48)) + (b[5] * Math.pow(2, 40)) + (b[4] * Math.pow(2, 32)) +
-                    (b[3] * Math.pow(2, 24)) + (b[2] * Math.pow(2, 16)) + (b[1] * Math.pow(2, 8)) + b[0];
-
-            if (exponent === 1024) {
-                if (mantissa !== 0) {
-                    return NaN;
-                } else {
-                    return sign * Infinity;
-                }
-            }
-
-            if (exponent === -1023) { // Denormalized
-                return sign * mantissa * Math.pow(2, -1022 - 52);
-            }
-
-            return sign * (1 + mantissa * Math.pow(2, -52)) * Math.pow(2, exponent);
-
-        },
-
-        getFloat32: function (byteOffset, littleEndian) {
-
-            var b = this._getBytes(4, byteOffset, littleEndian),
-
-                sign = 1 - (2 * (b[3] >> 7)),
-                exponent = (((b[3] << 1) & 0xff) | (b[2] >> 7)) - 127,
-                mantissa = ((b[2] & 0x7f) << 16) | (b[1] << 8) | b[0];
-
-            if (exponent === 128) {
-                if (mantissa !== 0) {
-                    return NaN;
-                } else {
-                    return sign * Infinity;
-                }
-            }
-
-            if (exponent === -127) { // Denormalized
-                return sign * mantissa * Math.pow(2, -126 - 23);
-            }
-
-            return sign * (1 + mantissa * Math.pow(2, -23)) * Math.pow(2, exponent);
-        },
-
-        getInt32: function (byteOffset, littleEndian) {
-            var b = this._getBytes(4, byteOffset, littleEndian);
-            return (b[3] << 24) | (b[2] << 16) | (b[1] << 8) | b[0];
-        },
-
-        getUint32: function (byteOffset, littleEndian) {
-            return this.getInt32(byteOffset, littleEndian) >>> 0;
-        },
-
-        getInt16: function (byteOffset, littleEndian) {
-            return (this.getUint16(byteOffset, littleEndian) << 16) >> 16;
-        },
-
-        getUint16: function (byteOffset, littleEndian) {
-            var b = this._getBytes(2, byteOffset, littleEndian);
-            return (b[1] << 8) | b[0];
-        },
-
-        getInt8: function (byteOffset) {
-            return (this.getUint8(byteOffset) << 24) >> 24;
-        },
-
-        getUint8: function (byteOffset) {
-            return this._getBytes(1, byteOffset)[0];
-        }
-
-    };
-
-} 

stl-viewer.js

@@ -0,0 +1,75 @@
+import './three.min.js';
+import './STLLoader.js';
+import './OrbitControls.js';
+
+class STLViewer extends HTMLElement {
+  constructor() {
+    super();
+  }
+
+  connectedCallback() {
+    this.connected = true;
+
+    const shadowRoot = this.attachShadow({ mode: 'open' });
+    const container = document.createElement('div');
+    container.style.width = '100%';
+    container.style.height = '100%';
+
+    shadowRoot.appendChild(container);
+
+    if (!this.hasAttribute('model')) {
+      throw new Error('model attribute is required');
+    }
+
+    const model = this.getAttribute('model');
+
+    let camera = new THREE.PerspectiveCamera(70, container.clientWidth / container.clientHeight, 1, 1000);
+    let renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
+    renderer.setSize(container.clientWidth, container.clientHeight);
+    container.appendChild(renderer.domElement);
+
+    window.addEventListener('resize', function () {
+      renderer.setSize(container.clientWidth, container.clientHeight);
+      camera.aspect = container.clientWidth / container.clientHeight;
+      camera.updateProjectionMatrix();
+    }, false);
+    let controls = new THREE.OrbitControls(camera, renderer.domElement);
+    controls.enableZoom = true;
+    let scene = new THREE.Scene();
+    scene.add(new THREE.HemisphereLight(0xffffff, 1.5));
+
+    new THREE.STLLoader().load(model, (geometry) => {
+      let material = new THREE.MeshPhongMaterial({
+        color: 0x6A39FF,
+        specular: 100,
+        shininess: 100,
+      });
+      let mesh = new THREE.Mesh(geometry, material);
+      scene.add(mesh);
+
+      let middle = new THREE.Vector3();
+      geometry.computeBoundingBox();
+      geometry.boundingBox.getCenter(middle);
+      mesh.geometry.applyMatrix4(new THREE.Matrix4().makeTranslation(-middle.x, -middle.y, -middle.z));
+      let largestDimension = Math.max(geometry.boundingBox.max.x, geometry.boundingBox.max.y, geometry.boundingBox.max.z)
+      camera.position.z = largestDimension * 1.5;
+
+      controls.autoRotate = true;
+      controls.autoRotateSpeed = 1;
+      let animate = () => {
+        controls.update();
+        renderer.render(scene, camera);
+        if (this.connected) {
+          requestAnimationFrame(animate);
+        }
+      };
+      animate();
+    });
+  }
+
+  disconnectedCallback() {
+    this.connected = false;
+  }
+}
+
+customElements.define('stl-viewer', STLViewer);