@metacell/geppetto-meta-ui
Version:
React components from geppetto-meta to create neuroscience applications and visualize data.
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JavaScript
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
import { AdditiveBlending, BufferGeometry, Color, FileLoader, Float32BufferAttribute, Geometry, Group, LineBasicMaterial, LineSegments, Loader, Material, Mesh, MeshPhongMaterial, Points, PointsMaterial, Vector3 } from 'three';
// o object_name | g group_name
var _object_pattern = /^[og]\s*(.+)?/;
// mtllib file_reference
var _material_library_pattern = /^mtllib /;
// usemtl material_name
var _material_use_pattern = /^usemtl /;
// usemap map_name
var _map_use_pattern = /^usemap /;
var _vA = new Vector3();
var _vB = new Vector3();
var _vC = new Vector3();
var _ab = new Vector3();
var _cb = new Vector3();
function ParserState() {
var state = {
objects: [],
object: {},
vertices: [],
normals: [],
colors: [],
uvs: [],
materials: {},
materialLibraries: [],
startObject: function startObject(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;
}
var 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 startMaterial(name, libraries) {
var 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);
}
var 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 clone(index) {
var 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 currentMaterial() {
if (this.materials.length > 0) {
return this.materials[this.materials.length - 1];
}
return undefined;
},
_finalize: function _finalize(end) {
var 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 (var 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') {
var declared = previousMaterial.clone(0);
declared.inherited = true;
this.object.materials.push(declared);
}
this.objects.push(this.object);
},
finalize: function finalize() {
if (this.object && typeof this.object._finalize === 'function') {
this.object._finalize(true);
}
},
parseVertexIndex: function parseVertexIndex(value, len) {
var index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 3) * 3;
},
parseNormalIndex: function parseNormalIndex(value, len) {
var index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 3) * 3;
},
parseUVIndex: function parseUVIndex(value, len) {
var index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 2) * 2;
},
addVertex: function addVertex(a, b, c) {
var src = this.vertices;
var 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 addVertexPoint(a) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
dst.push(src[a + 0], src[a + 1], src[a + 2]);
},
addVertexLine: function addVertexLine(a) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
dst.push(src[a + 0], src[a + 1], src[a + 2]);
},
addNormal: function addNormal(a, b, c) {
var src = this.normals;
var 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 addFaceNormal(a, b, c) {
var src = this.vertices;
var 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 addColor(a, b, c) {
var src = this.colors;
var 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 addUV(a, b, c) {
var src = this.uvs;
var 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 addDefaultUV() {
var dst = this.object.geometry.uvs;
dst.push(0, 0);
dst.push(0, 0);
dst.push(0, 0);
},
addUVLine: function addUVLine(a) {
var src = this.uvs;
var dst = this.object.geometry.uvs;
dst.push(src[a + 0], src[a + 1]);
},
addFace: function addFace(a, b, c, ua, ub, uc, na, nb, nc) {
var vLen = this.vertices.length;
var ia = this.parseVertexIndex(a, vLen);
var ib = this.parseVertexIndex(b, vLen);
var ic = this.parseVertexIndex(c, vLen);
this.addVertex(ia, ib, ic);
this.addColor(ia, ib, ic);
// normals
if (na !== undefined && na !== '') {
var 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 !== '') {
var 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 addPointGeometry(vertices) {
this.object.geometry.type = 'Points';
var vLen = this.vertices.length;
for (var vi = 0, l = vertices.length; vi < l; vi++) {
var index = this.parseVertexIndex(vertices[vi], vLen);
this.addVertexPoint(index);
this.addColor(index);
}
},
addLineGeometry: function addLineGeometry(vertices, uvs) {
this.object.geometry.type = 'Line';
var vLen = this.vertices.length;
var uvLen = this.uvs.length;
for (var vi = 0, l = vertices.length; vi < l; vi++) {
this.addVertexLine(this.parseVertexIndex(vertices[vi], vLen));
}
for (var uvi = 0, _l = uvs.length; uvi < _l; uvi++) {
this.addUVLine(this.parseUVIndex(uvs[uvi], uvLen));
}
}
};
state.startObject('', false);
return state;
}
//
var OBJLoader = /*#__PURE__*/function (_Loader) {
function OBJLoader(manager) {
var _this;
_classCallCheck(this, OBJLoader);
_this = _callSuper(this, OBJLoader, [manager]);
_this.materials = null;
return _this;
}
_inherits(OBJLoader, _Loader);
return _createClass(OBJLoader, [{
key: "load",
value: function load(url, onLoad, onProgress, onError) {
var scope = this;
var loader = new 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);
}
}, {
key: "setMaterials",
value: function setMaterials(materials) {
this.materials = materials;
return this;
}
}, {
key: "createMesh",
value: function createMesh(vertices, color, texture) {
var i, c;
var vl = vertices.length;
var geometry = new Geometry();
for (i = 0; i < vl; i++) {
geometry.vertices.push(new Vector3(vertices[i++], vertices[i++], vertices[i]));
}
var threeColor = new Color();
threeColor.setHex(color);
var material = new PointsMaterial({
size: 0.5,
map: texture,
blending: AdditiveBlending,
depthTest: false,
transparent: true,
color: threeColor
});
material.defaultColor = color;
material.defaultOpacity = 1;
return new Points(geometry, material);
}
// @metacell change
}, {
key: "parse",
value: function parse(text, texture) {
var 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, '');
}
var lines = text.split('\n');
var line = '',
lineFirstChar = '';
var lineLength = 0;
var result = [];
// Faster to just trim left side of the line. Use if available.
var trimLeft = typeof ''.trimLeft === 'function';
for (var 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') {
var 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') {
var lineData = line.substr(1).trim();
var vertexData = lineData.split(/\s+/);
var faceVertices = [];
// Parse the face vertex data into an easy to work with format
for (var j = 0, jl = vertexData.length; j < jl; j++) {
var vertex = vertexData[j];
if (vertex.length > 0) {
var vertexParts = vertex.split('/');
faceVertices.push(vertexParts);
}
}
// Draw an edge between the first vertex and all subsequent vertices to form an n-gon
var v1 = faceVertices[0];
for (var _j = 1, _jl = faceVertices.length - 1; _j < _jl; _j++) {
var v2 = faceVertices[_j];
var 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') {
var lineParts = line.substring(1).trim().split(' ');
var lineVertices = [];
var lineUVs = [];
if (line.indexOf('/') === -1) {
lineVertices = lineParts;
} else {
for (var li = 0, llen = lineParts.length; li < llen; li++) {
var 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') {
var _lineData = line.substr(1).trim();
var 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();
*/
var 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) {
var value = result[1].trim().toLowerCase();
state.object.smooth = value !== '0' && value !== 'off';
} else {
// ZBrush can produce "s" lines #11707
state.object.smooth = true;
}
var 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();
var container = new Group();
container.materialLibraries = [].concat(state.materialLibraries);
var hasPrimitives = !(state.objects.length === 1 && state.objects[0].geometry.vertices.length === 0);
if (hasPrimitives === true) {
for (var _i = 0, _l2 = state.objects.length; _i < _l2; _i++) {
var object = state.objects[_i];
var geometry = object.geometry;
var materials = object.materials;
var isLine = geometry.type === 'Line';
var isPoints = geometry.type === 'Points';
var hasVertexColors = false;
// Skip o/g line declarations that did not follow with any faces
if (geometry.vertices.length === 0) {
continue;
}
var buffergeometry = new BufferGeometry();
buffergeometry.setAttribute('position', new Float32BufferAttribute(geometry.vertices, 3));
if (geometry.normals.length > 0) {
buffergeometry.setAttribute('normal', new Float32BufferAttribute(geometry.normals, 3));
}
if (geometry.colors.length > 0) {
hasVertexColors = true;
buffergeometry.setAttribute('color', new Float32BufferAttribute(geometry.colors, 3));
}
if (geometry.hasUVIndices === true) {
buffergeometry.setAttribute('uv', new Float32BufferAttribute(geometry.uvs, 2));
}
// Create materials
var createdMaterials = [];
for (var mi = 0, miLen = materials.length; mi < miLen; mi++) {
var sourceMaterial = materials[mi];
var materialHash = sourceMaterial.name + '_' + sourceMaterial.smooth + '_' + hasVertexColors;
var _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 LineBasicMaterial)) {
var materialLine = new LineBasicMaterial();
Material.prototype.copy.call(materialLine, _material);
materialLine.color.copy(_material.color);
_material = materialLine;
} else if (isPoints && _material && !(_material instanceof PointsMaterial)) {
var materialPoints = new PointsMaterial({
size: 10,
sizeAttenuation: false
});
Material.prototype.copy.call(materialPoints, _material);
materialPoints.color.copy(_material.color);
materialPoints.map = _material.map;
_material = materialPoints;
}
}
if (_material === undefined) {
if (isLine) {
_material = new LineBasicMaterial();
} else if (isPoints) {
_material = new PointsMaterial({
size: 1,
sizeAttenuation: false
});
} else {
_material = new MeshPhongMaterial();
}
_material.name = sourceMaterial.name;
_material.flatShading = !sourceMaterial.smooth;
_material.vertexColors = hasVertexColors;
state.materials[materialHash] = _material;
}
createdMaterials.push(_material);
}
// Create mesh
var mesh = void 0;
if (createdMaterials.length > 1) {
for (var _mi = 0, _miLen = materials.length; _mi < _miLen; _mi++) {
var _sourceMaterial = materials[_mi];
buffergeometry.addGroup(_sourceMaterial.groupStart, _sourceMaterial.groupCount, _mi);
}
if (isLine) {
mesh = new LineSegments(buffergeometry, createdMaterials);
} else if (isPoints) {
mesh = new Points(buffergeometry, createdMaterials);
} else {
mesh = new Mesh(buffergeometry, createdMaterials);
}
} else {
if (isLine) {
mesh = new LineSegments(buffergeometry, createdMaterials[0]);
} else if (isPoints) {
mesh = new Points(buffergeometry, createdMaterials[0]);
} else {
mesh = new 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
* @metacell change
*/
container.add(this.createMesh(state.vertices, '0x' + Math.floor(Math.random() * 16777215).toString(16), texture));
}
return container;
}
}]);
}(Loader);
export { OBJLoader };