Add 3D Brain model

This commit is contained in:
Mahdi Dibaiee 2021-10-18 10:49:37 +01:00
parent 743c82b5a5
commit 3e65f90d12
12 changed files with 43449 additions and 0 deletions

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assets/brain.gltf Normal file

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@ -83,3 +83,7 @@ svg {
.highlight { .highlight {
background-color: rgb(251, 255, 130); background-color: rgb(251, 255, 130);
} }
#brain-container canvas {
margin: 1rem auto;
}

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@ -125,6 +125,8 @@
<div class='row'> <div class='row'>
<div class='column'> <div class='column'>
<p>Cerebellum is one of the major controlling areas in terms of motor function: that means moving our bodies and keeping our balance ...</p> <p>Cerebellum is one of the major controlling areas in terms of motor function: that means moving our bodies and keeping our balance ...</p>
<div id='brain-container'></div>
</div class='column'> </div class='column'>
</div> </div>
@ -199,5 +201,11 @@
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.min.js" integrity="sha512-Wt1bJGtlnMtGP0dqNFH1xlkLBNpEodaiQ8ZN5JLA5wpc1sUlk/O5uuOMNgvzddzkpvZ9GLyYNa8w2s7rqiTk5Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.min.js" integrity="sha512-Wt1bJGtlnMtGP0dqNFH1xlkLBNpEodaiQ8ZN5JLA5wpc1sUlk/O5uuOMNgvzddzkpvZ9GLyYNa8w2s7rqiTk5Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="javascript/alcohol-use-disorder.js"></script> <script src="javascript/alcohol-use-disorder.js"></script>
<script src='javascript/main.js'></script> <script src='javascript/main.js'></script>
<script src="javascript/three.js"></script>
<script src="javascript/OBJLoader.js"></script>
<script src="javascript/GLTFLoader.js"></script>
<script src="javascript/MTLLoader.js"></script>
<script src="javascript/OrbitControls.js"></script>
<script src="javascript/brain.js"></script>
</html> </html>

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javascript/GLTFLoader.js Normal file

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javascript/MTLLoader.js Normal file
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( function () {
/**
* Loads a Wavefront .mtl file specifying materials
*/
class MTLLoader extends THREE.Loader {
constructor( manager ) {
super( manager );
}
/**
* Loads and parses a MTL asset from a URL.
*
* @param {String} url - URL to the MTL file.
* @param {Function} [onLoad] - Callback invoked with the loaded object.
* @param {Function} [onProgress] - Callback for download progress.
* @param {Function} [onError] - Callback for download errors.
*
* @see setPath setResourcePath
*
* @note In order for relative texture references to resolve correctly
* you must call setResourcePath() explicitly prior to load.
*/
load( url, onLoad, onProgress, onError ) {
const scope = this;
const path = this.path === '' ? THREE.LoaderUtils.extractUrlBase( url ) : this.path;
const loader = new THREE.FileLoader( this.manager );
loader.setPath( this.path );
loader.setRequestHeader( this.requestHeader );
loader.setWithCredentials( this.withCredentials );
loader.load( url, function ( text ) {
try {
onLoad( scope.parse( text, path ) );
} catch ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
}
}, onProgress, onError );
}
setMaterialOptions( value ) {
this.materialOptions = value;
return this;
}
/**
* Parses a MTL file.
*
* @param {String} text - Content of MTL file
* @return {MaterialCreator}
*
* @see setPath setResourcePath
*
* @note In order for relative texture references to resolve correctly
* you must call setResourcePath() explicitly prior to parse.
*/
parse( text, path ) {
const lines = text.split( '\n' );
let info = {};
const delimiter_pattern = /\s+/;
const materialsInfo = {};
for ( let i = 0; i < lines.length; i ++ ) {
let line = lines[ i ];
line = line.trim();
if ( line.length === 0 || line.charAt( 0 ) === '#' ) {
// Blank line or comment ignore
continue;
}
const pos = line.indexOf( ' ' );
let key = pos >= 0 ? line.substring( 0, pos ) : line;
key = key.toLowerCase();
let value = pos >= 0 ? line.substring( pos + 1 ) : '';
value = value.trim();
if ( key === 'newmtl' ) {
// New material
info = {
name: value
};
materialsInfo[ value ] = info;
} else {
if ( key === 'ka' || key === 'kd' || key === 'ks' || key === 'ke' ) {
const ss = value.split( delimiter_pattern, 3 );
info[ key ] = [ parseFloat( ss[ 0 ] ), parseFloat( ss[ 1 ] ), parseFloat( ss[ 2 ] ) ];
} else {
info[ key ] = value;
}
}
}
const materialCreator = new MaterialCreator( this.resourcePath || path, this.materialOptions );
materialCreator.setCrossOrigin( this.crossOrigin );
materialCreator.setManager( this.manager );
materialCreator.setMaterials( materialsInfo );
return materialCreator;
}
}
/**
* Create a new MTLLoader.MaterialCreator
* @param baseUrl - Url relative to which textures are loaded
* @param options - Set of options on how to construct the materials
* side: Which side to apply the material
* THREE.FrontSide (default), THREE.BackSide, THREE.DoubleSide
* wrap: What type of wrapping to apply for textures
* THREE.RepeatWrapping (default), THREE.ClampToEdgeWrapping, THREE.MirroredRepeatWrapping
* normalizeRGB: RGBs need to be normalized to 0-1 from 0-255
* Default: false, assumed to be already normalized
* ignoreZeroRGBs: Ignore values of RGBs (Ka,Kd,Ks) that are all 0's
* Default: false
* @constructor
*/
class MaterialCreator {
constructor( baseUrl = '', options = {} ) {
this.baseUrl = baseUrl;
this.options = options;
this.materialsInfo = {};
this.materials = {};
this.materialsArray = [];
this.nameLookup = {};
this.crossOrigin = 'anonymous';
this.side = this.options.side !== undefined ? this.options.side : THREE.FrontSide;
this.wrap = this.options.wrap !== undefined ? this.options.wrap : THREE.RepeatWrapping;
}
setCrossOrigin( value ) {
this.crossOrigin = value;
return this;
}
setManager( value ) {
this.manager = value;
}
setMaterials( materialsInfo ) {
this.materialsInfo = this.convert( materialsInfo );
this.materials = {};
this.materialsArray = [];
this.nameLookup = {};
}
convert( materialsInfo ) {
if ( ! this.options ) return materialsInfo;
const converted = {};
for ( const mn in materialsInfo ) {
// Convert materials info into normalized form based on options
const mat = materialsInfo[ mn ];
const covmat = {};
converted[ mn ] = covmat;
for ( const prop in mat ) {
let save = true;
let value = mat[ prop ];
const lprop = prop.toLowerCase();
switch ( lprop ) {
case 'kd':
case 'ka':
case 'ks':
// Diffuse color (color under white light) using RGB values
if ( this.options && this.options.normalizeRGB ) {
value = [ value[ 0 ] / 255, value[ 1 ] / 255, value[ 2 ] / 255 ];
}
if ( this.options && this.options.ignoreZeroRGBs ) {
if ( value[ 0 ] === 0 && value[ 1 ] === 0 && value[ 2 ] === 0 ) {
// ignore
save = false;
}
}
break;
default:
break;
}
if ( save ) {
covmat[ lprop ] = value;
}
}
}
return converted;
}
preload() {
for ( const mn in this.materialsInfo ) {
this.create( mn );
}
}
getIndex( materialName ) {
return this.nameLookup[ materialName ];
}
getAsArray() {
let index = 0;
for ( const mn in this.materialsInfo ) {
this.materialsArray[ index ] = this.create( mn );
this.nameLookup[ mn ] = index;
index ++;
}
return this.materialsArray;
}
create( materialName ) {
if ( this.materials[ materialName ] === undefined ) {
this.createMaterial_( materialName );
}
return this.materials[ materialName ];
}
createMaterial_( materialName ) {
// Create material
const scope = this;
const mat = this.materialsInfo[ materialName ];
const params = {
name: materialName,
side: this.side
};
function resolveURL( baseUrl, url ) {
if ( typeof url !== 'string' || url === '' ) return ''; // Absolute URL
if ( /^https?:\/\//i.test( url ) ) return url;
return baseUrl + url;
}
function setMapForType( mapType, value ) {
if ( params[ mapType ] ) return; // Keep the first encountered texture
const texParams = scope.getTextureParams( value, params );
const map = scope.loadTexture( resolveURL( scope.baseUrl, texParams.url ) );
map.repeat.copy( texParams.scale );
map.offset.copy( texParams.offset );
map.wrapS = scope.wrap;
map.wrapT = scope.wrap;
params[ mapType ] = map;
}
for ( const prop in mat ) {
const value = mat[ prop ];
let n;
if ( value === '' ) continue;
switch ( prop.toLowerCase() ) {
// Ns is material specular exponent
case 'kd':
// Diffuse color (color under white light) using RGB values
params.color = new THREE.Color().fromArray( value );
break;
case 'ks':
// Specular color (color when light is reflected from shiny surface) using RGB values
params.specular = new THREE.Color().fromArray( value );
break;
case 'ke':
// Emissive using RGB values
params.emissive = new THREE.Color().fromArray( value );
break;
case 'map_kd':
// Diffuse texture map
setMapForType( 'map', value );
break;
case 'map_ks':
// Specular map
setMapForType( 'specularMap', value );
break;
case 'map_ke':
// Emissive map
setMapForType( 'emissiveMap', value );
break;
case 'norm':
setMapForType( 'normalMap', value );
break;
case 'map_bump':
case 'bump':
// Bump texture map
setMapForType( 'bumpMap', value );
break;
case 'map_d':
// Alpha map
setMapForType( 'alphaMap', value );
params.transparent = true;
break;
case 'ns':
// The specular exponent (defines the focus of the specular highlight)
// A high exponent results in a tight, concentrated highlight. Ns values normally range from 0 to 1000.
params.shininess = parseFloat( value );
break;
case 'd':
n = parseFloat( value );
if ( n < 1 ) {
params.opacity = n;
params.transparent = true;
}
break;
case 'tr':
n = parseFloat( value );
if ( this.options && this.options.invertTrProperty ) n = 1 - n;
if ( n > 0 ) {
params.opacity = 1 - n;
params.transparent = true;
}
break;
default:
break;
}
}
this.materials[ materialName ] = new THREE.MeshPhongMaterial( params );
return this.materials[ materialName ];
}
getTextureParams( value, matParams ) {
const texParams = {
scale: new THREE.Vector2( 1, 1 ),
offset: new THREE.Vector2( 0, 0 )
};
const items = value.split( /\s+/ );
let pos;
pos = items.indexOf( '-bm' );
if ( pos >= 0 ) {
matParams.bumpScale = parseFloat( items[ pos + 1 ] );
items.splice( pos, 2 );
}
pos = items.indexOf( '-s' );
if ( pos >= 0 ) {
texParams.scale.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
items.splice( pos, 4 ); // we expect 3 parameters here!
}
pos = items.indexOf( '-o' );
if ( pos >= 0 ) {
texParams.offset.set( parseFloat( items[ pos + 1 ] ), parseFloat( items[ pos + 2 ] ) );
items.splice( pos, 4 ); // we expect 3 parameters here!
}
texParams.url = items.join( ' ' ).trim();
return texParams;
}
loadTexture( url, mapping, onLoad, onProgress, onError ) {
const manager = this.manager !== undefined ? this.manager : THREE.DefaultLoadingManager;
let loader = manager.getHandler( url );
if ( loader === null ) {
loader = new THREE.TextureLoader( manager );
}
if ( loader.setCrossOrigin ) loader.setCrossOrigin( this.crossOrigin );
const texture = loader.load( url, onLoad, onProgress, onError );
if ( mapping !== undefined ) texture.mapping = mapping;
return texture;
}
}
THREE.MTLLoader = MTLLoader;
} )();

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javascript/OBJLoader.js Normal file
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@ -0,0 +1,808 @@
( function () {
const _object_pattern = /^[og]\s*(.+)?/; // mtllib file_reference
const _material_library_pattern = /^mtllib /; // usemtl material_name
const _material_use_pattern = /^usemtl /; // usemap map_name
const _map_use_pattern = /^usemap /;
const _vA = new THREE.Vector3();
const _vB = new THREE.Vector3();
const _vC = new THREE.Vector3();
const _ab = new THREE.Vector3();
const _cb = new THREE.Vector3();
function ParserState() {
const state = {
objects: [],
object: {},
vertices: [],
normals: [],
colors: [],
uvs: [],
materials: {},
materialLibraries: [],
startObject: function ( name, fromDeclaration ) {
// If the current object (initial from reset) is not from a g/o declaration in the parsed
// file. We need to use it for the first parsed g/o to keep things in sync.
if ( this.object && this.object.fromDeclaration === false ) {
this.object.name = name;
this.object.fromDeclaration = fromDeclaration !== false;
return;
}
const previousMaterial = this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined;
if ( this.object && typeof this.object._finalize === 'function' ) {
this.object._finalize( true );
}
this.object = {
name: name || '',
fromDeclaration: fromDeclaration !== false,
geometry: {
vertices: [],
normals: [],
colors: [],
uvs: [],
hasUVIndices: false
},
materials: [],
smooth: true,
startMaterial: function ( name, libraries ) {
const previous = this._finalize( false ); // New usemtl declaration overwrites an inherited material, except if faces were declared
// after the material, then it must be preserved for proper MultiMaterial continuation.
if ( previous && ( previous.inherited || previous.groupCount <= 0 ) ) {
this.materials.splice( previous.index, 1 );
}
const material = {
index: this.materials.length,
name: name || '',
mtllib: Array.isArray( libraries ) && libraries.length > 0 ? libraries[ libraries.length - 1 ] : '',
smooth: previous !== undefined ? previous.smooth : this.smooth,
groupStart: previous !== undefined ? previous.groupEnd : 0,
groupEnd: - 1,
groupCount: - 1,
inherited: false,
clone: function ( index ) {
const cloned = {
index: typeof index === 'number' ? index : this.index,
name: this.name,
mtllib: this.mtllib,
smooth: this.smooth,
groupStart: 0,
groupEnd: - 1,
groupCount: - 1,
inherited: false
};
cloned.clone = this.clone.bind( cloned );
return cloned;
}
};
this.materials.push( material );
return material;
},
currentMaterial: function () {
if ( this.materials.length > 0 ) {
return this.materials[ this.materials.length - 1 ];
}
return undefined;
},
_finalize: function ( end ) {
const lastMultiMaterial = this.currentMaterial();
if ( lastMultiMaterial && lastMultiMaterial.groupEnd === - 1 ) {
lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;
lastMultiMaterial.inherited = false;
} // Ignore objects tail materials if no face declarations followed them before a new o/g started.
if ( end && this.materials.length > 1 ) {
for ( let mi = this.materials.length - 1; mi >= 0; mi -- ) {
if ( this.materials[ mi ].groupCount <= 0 ) {
this.materials.splice( mi, 1 );
}
}
} // Guarantee at least one empty material, this makes the creation later more straight forward.
if ( end && this.materials.length === 0 ) {
this.materials.push( {
name: '',
smooth: this.smooth
} );
}
return lastMultiMaterial;
}
}; // Inherit previous objects material.
// Spec tells us that a declared material must be set to all objects until a new material is declared.
// If a usemtl declaration is encountered while this new object is being parsed, it will
// overwrite the inherited material. Exception being that there was already face declarations
// to the inherited material, then it will be preserved for proper MultiMaterial continuation.
if ( previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function' ) {
const declared = previousMaterial.clone( 0 );
declared.inherited = true;
this.object.materials.push( declared );
}
this.objects.push( this.object );
},
finalize: function () {
if ( this.object && typeof this.object._finalize === 'function' ) {
this.object._finalize( true );
}
},
parseVertexIndex: function ( value, len ) {
const index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
},
parseNormalIndex: function ( value, len ) {
const index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
},
parseUVIndex: function ( value, len ) {
const index = parseInt( value, 10 );
return ( index >= 0 ? index - 1 : index + len / 2 ) * 2;
},
addVertex: function ( a, b, c ) {
const src = this.vertices;
const dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addVertexPoint: function ( a ) {
const src = this.vertices;
const dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
},
addVertexLine: function ( a ) {
const src = this.vertices;
const dst = this.object.geometry.vertices;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
},
addNormal: function ( a, b, c ) {
const src = this.normals;
const dst = this.object.geometry.normals;
dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addFaceNormal: function ( a, b, c ) {
const src = this.vertices;
const dst = this.object.geometry.normals;
_vA.fromArray( src, a );
_vB.fromArray( src, b );
_vC.fromArray( src, c );
_cb.subVectors( _vC, _vB );
_ab.subVectors( _vA, _vB );
_cb.cross( _ab );
_cb.normalize();
dst.push( _cb.x, _cb.y, _cb.z );
dst.push( _cb.x, _cb.y, _cb.z );
dst.push( _cb.x, _cb.y, _cb.z );
},
addColor: function ( a, b, c ) {
const src = this.colors;
const dst = this.object.geometry.colors;
if ( src[ a ] !== undefined ) dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
if ( src[ b ] !== undefined ) dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
if ( src[ c ] !== undefined ) dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
},
addUV: function ( a, b, c ) {
const src = this.uvs;
const dst = this.object.geometry.uvs;
dst.push( src[ a + 0 ], src[ a + 1 ] );
dst.push( src[ b + 0 ], src[ b + 1 ] );
dst.push( src[ c + 0 ], src[ c + 1 ] );
},
addDefaultUV: function () {
const dst = this.object.geometry.uvs;
dst.push( 0, 0 );
dst.push( 0, 0 );
dst.push( 0, 0 );
},
addUVLine: function ( a ) {
const src = this.uvs;
const dst = this.object.geometry.uvs;
dst.push( src[ a + 0 ], src[ a + 1 ] );
},
addFace: function ( a, b, c, ua, ub, uc, na, nb, nc ) {
const vLen = this.vertices.length;
let ia = this.parseVertexIndex( a, vLen );
let ib = this.parseVertexIndex( b, vLen );
let ic = this.parseVertexIndex( c, vLen );
this.addVertex( ia, ib, ic );
this.addColor( ia, ib, ic ); // normals
if ( na !== undefined && na !== '' ) {
const nLen = this.normals.length;
ia = this.parseNormalIndex( na, nLen );
ib = this.parseNormalIndex( nb, nLen );
ic = this.parseNormalIndex( nc, nLen );
this.addNormal( ia, ib, ic );
} else {
this.addFaceNormal( ia, ib, ic );
} // uvs
if ( ua !== undefined && ua !== '' ) {
const uvLen = this.uvs.length;
ia = this.parseUVIndex( ua, uvLen );
ib = this.parseUVIndex( ub, uvLen );
ic = this.parseUVIndex( uc, uvLen );
this.addUV( ia, ib, ic );
this.object.geometry.hasUVIndices = true;
} else {
// add placeholder values (for inconsistent face definitions)
this.addDefaultUV();
}
},
addPointGeometry: function ( vertices ) {
this.object.geometry.type = 'Points';
const vLen = this.vertices.length;
for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {
const index = this.parseVertexIndex( vertices[ vi ], vLen );
this.addVertexPoint( index );
this.addColor( index );
}
},
addLineGeometry: function ( vertices, uvs ) {
this.object.geometry.type = 'Line';
const vLen = this.vertices.length;
const uvLen = this.uvs.length;
for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {
this.addVertexLine( this.parseVertexIndex( vertices[ vi ], vLen ) );
}
for ( let uvi = 0, l = uvs.length; uvi < l; uvi ++ ) {
this.addUVLine( this.parseUVIndex( uvs[ uvi ], uvLen ) );
}
}
};
state.startObject( '', false );
return state;
} //
class OBJLoader extends THREE.Loader {
constructor( manager ) {
super( manager );
this.materials = null;
}
load( url, onLoad, onProgress, onError ) {
const scope = this;
const loader = new THREE.FileLoader( this.manager );
loader.setPath( this.path );
loader.setRequestHeader( this.requestHeader );
loader.setWithCredentials( this.withCredentials );
loader.load( url, function ( text ) {
try {
onLoad( scope.parse( text ) );
} catch ( e ) {
if ( onError ) {
onError( e );
} else {
console.error( e );
}
scope.manager.itemError( url );
}
}, onProgress, onError );
}
setMaterials( materials ) {
this.materials = materials;
return this;
}
parse( text ) {
const state = new ParserState();
if ( text.indexOf( '\r\n' ) !== - 1 ) {
// This is faster than String.split with regex that splits on both
text = text.replace( /\r\n/g, '\n' );
}
if ( text.indexOf( '\\\n' ) !== - 1 ) {
// join lines separated by a line continuation character (\)
text = text.replace( /\\\n/g, '' );
}
const lines = text.split( '\n' );
let line = '',
lineFirstChar = '';
let lineLength = 0;
let result = []; // Faster to just trim left side of the line. Use if available.
const trimLeft = typeof ''.trimLeft === 'function';
for ( let i = 0, l = lines.length; i < l; i ++ ) {
line = lines[ i ];
line = trimLeft ? line.trimLeft() : line.trim();
lineLength = line.length;
if ( lineLength === 0 ) continue;
lineFirstChar = line.charAt( 0 ); // @todo invoke passed in handler if any
if ( lineFirstChar === '#' ) continue;
if ( lineFirstChar === 'v' ) {
const data = line.split( /\s+/ );
switch ( data[ 0 ] ) {
case 'v':
state.vertices.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );
if ( data.length >= 7 ) {
state.colors.push( parseFloat( data[ 4 ] ), parseFloat( data[ 5 ] ), parseFloat( data[ 6 ] ) );
} else {
// if no colors are defined, add placeholders so color and vertex indices match
state.colors.push( undefined, undefined, undefined );
}
break;
case 'vn':
state.normals.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );
break;
case 'vt':
state.uvs.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ) );
break;
}
} else if ( lineFirstChar === 'f' ) {
const lineData = line.substr( 1 ).trim();
const vertexData = lineData.split( /\s+/ );
const faceVertices = []; // Parse the face vertex data into an easy to work with format
for ( let j = 0, jl = vertexData.length; j < jl; j ++ ) {
const vertex = vertexData[ j ];
if ( vertex.length > 0 ) {
const vertexParts = vertex.split( '/' );
faceVertices.push( vertexParts );
}
} // Draw an edge between the first vertex and all subsequent vertices to form an n-gon
const v1 = faceVertices[ 0 ];
for ( let j = 1, jl = faceVertices.length - 1; j < jl; j ++ ) {
const v2 = faceVertices[ j ];
const v3 = faceVertices[ j + 1 ];
state.addFace( v1[ 0 ], v2[ 0 ], v3[ 0 ], v1[ 1 ], v2[ 1 ], v3[ 1 ], v1[ 2 ], v2[ 2 ], v3[ 2 ] );
}
} else if ( lineFirstChar === 'l' ) {
const lineParts = line.substring( 1 ).trim().split( ' ' );
let lineVertices = [];
const lineUVs = [];
if ( line.indexOf( '/' ) === - 1 ) {
lineVertices = lineParts;
} else {
for ( let li = 0, llen = lineParts.length; li < llen; li ++ ) {
const parts = lineParts[ li ].split( '/' );
if ( parts[ 0 ] !== '' ) lineVertices.push( parts[ 0 ] );
if ( parts[ 1 ] !== '' ) lineUVs.push( parts[ 1 ] );
}
}
state.addLineGeometry( lineVertices, lineUVs );
} else if ( lineFirstChar === 'p' ) {
const lineData = line.substr( 1 ).trim();
const pointData = lineData.split( ' ' );
state.addPointGeometry( pointData );
} else if ( ( result = _object_pattern.exec( line ) ) !== null ) {
// o object_name
// or
// g group_name
// WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869
// let name = result[ 0 ].substr( 1 ).trim();
const name = ( ' ' + result[ 0 ].substr( 1 ).trim() ).substr( 1 );
state.startObject( name );
} else if ( _material_use_pattern.test( line ) ) {
// material
state.object.startMaterial( line.substring( 7 ).trim(), state.materialLibraries );
} else if ( _material_library_pattern.test( line ) ) {
// mtl file
state.materialLibraries.push( line.substring( 7 ).trim() );
} else if ( _map_use_pattern.test( line ) ) {
// the line is parsed but ignored since the loader assumes textures are defined MTL files
// (according to https://www.okino.com/conv/imp_wave.htm, 'usemap' is the old-style Wavefront texture reference method)
console.warn( 'THREE.OBJLoader: Rendering identifier "usemap" not supported. Textures must be defined in MTL files.' );
} else if ( lineFirstChar === 's' ) {
result = line.split( ' ' ); // smooth shading
// @todo Handle files that have varying smooth values for a set of faces inside one geometry,
// but does not define a usemtl for each face set.
// This should be detected and a dummy material created (later MultiMaterial and geometry groups).
// This requires some care to not create extra material on each smooth value for "normal" obj files.
// where explicit usemtl defines geometry groups.
// Example asset: examples/models/obj/cerberus/Cerberus.obj
/*
* http://paulbourke.net/dataformats/obj/
* or
* http://www.cs.utah.edu/~boulos/cs3505/obj_spec.pdf
*
* From chapter "Grouping" Syntax explanation "s group_number":
* "group_number is the smoothing group number. To turn off smoothing groups, use a value of 0 or off.
* Polygonal elements use group numbers to put elements in different smoothing groups. For free-form
* surfaces, smoothing groups are either turned on or off; there is no difference between values greater
* than 0."
*/
if ( result.length > 1 ) {
const value = result[ 1 ].trim().toLowerCase();
state.object.smooth = value !== '0' && value !== 'off';
} else {
// ZBrush can produce "s" lines #11707
state.object.smooth = true;
}
const material = state.object.currentMaterial();
if ( material ) material.smooth = state.object.smooth;
} else {
// Handle null terminated files without exception
if ( line === '\0' ) continue;
console.warn( 'THREE.OBJLoader: Unexpected line: "' + line + '"' );
}
}
state.finalize();
const container = new THREE.Group();
container.materialLibraries = [].concat( state.materialLibraries );
const hasPrimitives = ! ( state.objects.length === 1 && state.objects[ 0 ].geometry.vertices.length === 0 );
if ( hasPrimitives === true ) {
for ( let i = 0, l = state.objects.length; i < l; i ++ ) {
const object = state.objects[ i ];
const geometry = object.geometry;
const materials = object.materials;
const isLine = geometry.type === 'Line';
const isPoints = geometry.type === 'Points';
let hasVertexColors = false; // Skip o/g line declarations that did not follow with any faces
if ( geometry.vertices.length === 0 ) continue;
const buffergeometry = new THREE.BufferGeometry();
buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( geometry.vertices, 3 ) );
if ( geometry.normals.length > 0 ) {
buffergeometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( geometry.normals, 3 ) );
}
if ( geometry.colors.length > 0 ) {
hasVertexColors = true;
buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( geometry.colors, 3 ) );
}
if ( geometry.hasUVIndices === true ) {
buffergeometry.setAttribute( 'uv', new THREE.Float32BufferAttribute( geometry.uvs, 2 ) );
} // Create materials
const createdMaterials = [];
for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
const sourceMaterial = materials[ mi ];
const materialHash = sourceMaterial.name + '_' + sourceMaterial.smooth + '_' + hasVertexColors;
let material = state.materials[ materialHash ];
if ( this.materials !== null ) {
material = this.materials.create( sourceMaterial.name ); // mtl etc. loaders probably can't create line materials correctly, copy properties to a line material.
if ( isLine && material && ! ( material instanceof THREE.LineBasicMaterial ) ) {
const materialLine = new THREE.LineBasicMaterial();
THREE.Material.prototype.copy.call( materialLine, material );
materialLine.color.copy( material.color );
material = materialLine;
} else if ( isPoints && material && ! ( material instanceof THREE.PointsMaterial ) ) {
const materialPoints = new THREE.PointsMaterial( {
size: 10,
sizeAttenuation: false
} );
THREE.Material.prototype.copy.call( materialPoints, material );
materialPoints.color.copy( material.color );
materialPoints.map = material.map;
material = materialPoints;
}
}
if ( material === undefined ) {
if ( isLine ) {
material = new THREE.LineBasicMaterial();
} else if ( isPoints ) {
material = new THREE.PointsMaterial( {
size: 1,
sizeAttenuation: false
} );
} else {
material = new THREE.MeshPhongMaterial();
}
material.name = sourceMaterial.name;
material.flatShading = sourceMaterial.smooth ? false : true;
material.vertexColors = hasVertexColors;
state.materials[ materialHash ] = material;
}
createdMaterials.push( material );
} // Create mesh
let mesh;
if ( createdMaterials.length > 1 ) {
for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
const sourceMaterial = materials[ mi ];
buffergeometry.addGroup( sourceMaterial.groupStart, sourceMaterial.groupCount, mi );
}
if ( isLine ) {
mesh = new THREE.LineSegments( buffergeometry, createdMaterials );
} else if ( isPoints ) {
mesh = new THREE.Points( buffergeometry, createdMaterials );
} else {
mesh = new THREE.Mesh( buffergeometry, createdMaterials );
}
} else {
if ( isLine ) {
mesh = new THREE.LineSegments( buffergeometry, createdMaterials[ 0 ] );
} else if ( isPoints ) {
mesh = new THREE.Points( buffergeometry, createdMaterials[ 0 ] );
} else {
mesh = new THREE.Mesh( buffergeometry, createdMaterials[ 0 ] );
}
}
mesh.name = object.name;
container.add( mesh );
}
} else {
// if there is only the default parser state object with no geometry data, interpret data as point cloud
if ( state.vertices.length > 0 ) {
const material = new THREE.PointsMaterial( {
size: 1,
sizeAttenuation: false
} );
const buffergeometry = new THREE.BufferGeometry();
buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( state.vertices, 3 ) );
if ( state.colors.length > 0 && state.colors[ 0 ] !== undefined ) {
buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( state.colors, 3 ) );
material.vertexColors = true;
}
const points = new THREE.Points( buffergeometry, material );
container.add( points );
}
}
return container;
}
}
THREE.OBJLoader = OBJLoader;
} )();

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60
javascript/brain.js Normal file
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@ -0,0 +1,60 @@
const scene = new THREE.Scene();
const width = 400;
const height = 300;
const camera = new THREE.PerspectiveCamera( 75, width / height, 0.01, 1000 );
camera.position.set(-0.8, 0.11, -0.9);
scene.background = new THREE.Color('white');
const renderer = new THREE.WebGLRenderer();
renderer.setSize(width, height);
const canvas = document.getElementById('brain-container');
canvas.appendChild( renderer.domElement );
{
const controls = new THREE.OrbitControls(camera, canvas);
controls.target.set(0, 0.5, 0);
controls.update();
}
// Lights
{
const color = 0xFFFFFF;
const intensity = 0.2;
const light = new THREE.AmbientLight(color, intensity);
//scene.add(light);
}
// Upper light
{
const color = 0xFFFFFF;
const intensity = 0.6;
const light = new THREE.DirectionalLight(color, intensity);
light.position.set(0, 5, 0);
light.target.position.set(0, 0.5, 0);
scene.add(light);
scene.add(light.target);
}
// Lower light
{
const color = 0xFFFFFF;
const intensity = 2;
const light = new THREE.DirectionalLight(color, intensity);
light.position.set(0, -5, 0);
light.target.position.set(0, 0.5, 0);
scene.add(light);
scene.add(light.target);
}
const objLoader = new THREE.GLTFLoader();
objLoader.load('assets/brain.gltf', (root) => {
scene.add(root.scene.children[2]);
});
function render() {
renderer.render(scene, camera);
requestAnimationFrame(render);
}
requestAnimationFrame(render);

36414
javascript/three.js Normal file

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@ -3,3 +3,9 @@
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.min.js" integrity="sha512-Wt1bJGtlnMtGP0dqNFH1xlkLBNpEodaiQ8ZN5JLA5wpc1sUlk/O5uuOMNgvzddzkpvZ9GLyYNa8w2s7rqiTk5Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.5.1/chart.min.js" integrity="sha512-Wt1bJGtlnMtGP0dqNFH1xlkLBNpEodaiQ8ZN5JLA5wpc1sUlk/O5uuOMNgvzddzkpvZ9GLyYNa8w2s7rqiTk5Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="javascript/alcohol-use-disorder.js"></script> <script src="javascript/alcohol-use-disorder.js"></script>
<script src='javascript/main.js'></script> <script src='javascript/main.js'></script>
<script src="javascript/three.js"></script>
<script src="javascript/OBJLoader.js"></script>
<script src="javascript/GLTFLoader.js"></script>
<script src="javascript/MTLLoader.js"></script>
<script src="javascript/OrbitControls.js"></script>
<script src="javascript/brain.js"></script>

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@ -6,5 +6,7 @@
<div class='row'> <div class='row'>
<div class='column'> <div class='column'>
<p>Cerebellum is one of the major controlling areas in terms of motor function: that means moving our bodies and keeping our balance ...</p> <p>Cerebellum is one of the major controlling areas in terms of motor function: that means moving our bodies and keeping our balance ...</p>
<div id='brain-container'></div>
</div class='column'> </div class='column'>
</div> </div>