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Adjust obj loader spacing

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This commit is contained in:
Dennis Eichhorn 2017-11-11 16:51:46 +01:00
parent 54a53724ab
commit 97b4ef3e44
1 changed files with 217 additions and 318 deletions
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209
3D/Loader/ObjLoader.js
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@ -15,31 +15,18 @@
jsOMS.ThreeD.Loader.ObjLoader = function(manager) {
this.manager = (manager !== undefined) ? manager : THREE.DefaultLoadingManager;
this.materials = null;
this.regexp = {
// v float float float
vertex_pattern : /^v\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/,
// vn float float float
normal_pattern : /^vn\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/,
// vt float float
uv_pattern : /^vt\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/,
// f vertex vertex vertex
face_vertex : /^f\s+(-?\d+)\s+(-?\d+)\s+(-?\d+)(?:\s+(-?\d+))?/,
// f vertex/uv vertex/uv vertex/uv
face_vertex_uv : /^f\s+(-?\d+)\/(-?\d+)\s+(-?\d+)\/(-?\d+)\s+(-?\d+)\/(-?\d+)(?:\s+(-?\d+)\/(-?\d+))?/,
// f vertex/uv/normal vertex/uv/normal vertex/uv/normal
face_vertex_uv_normal : /^f\s+(-?\d+)\/(-?\d+)\/(-?\d+)\s+(-?\d+)\/(-?\d+)\/(-?\d+)\s+(-?\d+)\/(-?\d+)\/(-?\d+)(?:\s+(-?\d+)\/(-?\d+)\/(-?\d+))?/,
// f vertex//normal vertex//normal vertex//normal
face_vertex_normal : /^f\s+(-?\d+)\/\/(-?\d+)\s+(-?\d+)\/\/(-?\d+)\s+(-?\d+)\/\/(-?\d+)(?:\s+(-?\d+)\/\/(-?\d+))?/,
// o object_name | g group_name
object_pattern : /^[og]\s*(.+)?/,
// s boolean
smoothing_pattern : /^s\s+(\d+|on|off)/,
// mtllib file_reference
material_library_pattern : /^mtllib /,
// usemtl material_name
material_use_pattern : /^usemtl /
};
};
@ -68,25 +55,19 @@
let state = {
objects : [],
object : {},
vertices : [],
normals : [],
uvs : [],
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;
return;
}
var previousMaterial = ( this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined );
let previousMaterial = (this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined);
if (this.object && typeof this.object._finalize === 'function') {
this.object._finalize(true);
@ -95,7 +76,6 @@
this.object = {
name : name || '',
fromDeclaration : (fromDeclaration !== false),
geometry : {
vertices : [],
normals : [],
@ -103,17 +83,14 @@
},
materials : [],
smooth : true,
startMaterial : function(name, libraries) {
var previous = this._finalize( false );
let 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 = {
let material = {
index : this.materials.length,
name : name || '',
mtllib : (Array.isArray(libraries) && libraries.length > 0 ? libraries[libraries.length - 1] : ''),
@ -142,7 +119,6 @@
this.materials.push(material);
return material;
},
currentMaterial : function() {
@ -151,11 +127,10 @@
}
return undefined;
},
_finalize : function(end) {
var lastMultiMaterial = this.currentMaterial();
let lastMultiMaterial = this.currentMaterial();
if (lastMultiMaterial && lastMultiMaterial.groupEnd === -1) {
lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
@ -163,16 +138,14 @@
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-- ) {
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 : '',
@ -184,46 +157,34 @@
}
};
// 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 );
let 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) {
var index = parseInt( value, 10 );
let index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 3) * 3;
},
parseNormalIndex: function (value, len) {
var index = parseInt( value, 10 );
let index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 3) * 3;
},
parseUVIndex: function (value, len) {
var index = parseInt( value, 10 );
let index = parseInt(value, 10);
return (index >= 0 ? index - 1 : index + len / 2) * 2;
},
addVertex: function (a, b, c) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
let src = this.vertices;
let dst = this.object.geometry.vertices;
dst.push(src[a + 0]);
dst.push(src[a + 1]);
@ -235,19 +196,17 @@
dst.push(src[c + 1]);
dst.push(src[c + 2]);
},
addVertexLine: function (a) {
var src = this.vertices;
var dst = this.object.geometry.vertices;
let src = this.vertices;
let dst = this.object.geometry.vertices;
dst.push(src[a + 0]);
dst.push(src[a + 1]);
dst.push(src[a + 2]);
},
addNormal : function (a, b, c) {
var src = this.normals;
var dst = this.object.geometry.normals;
let src = this.normals;
let dst = this.object.geometry.normals;
dst.push(src[a + 0]);
dst.push(src[a + 1]);
@ -259,10 +218,9 @@
dst.push(src[c + 1]);
dst.push(src[c + 2]);
},
addUV: function (a, b, c) {
var src = this.uvs;
var dst = this.object.geometry.uvs;
let src = this.uvs;
let dst = this.object.geometry.uvs;
dst.push(src[a + 0]);
dst.push(src[a + 1]);
@ -271,22 +229,20 @@
dst.push(src[c + 0]);
dst.push(src[c + 1]);
},
addUVLine: function (a) {
var src = this.uvs;
var dst = this.object.geometry.uvs;
let src = this.uvs;
let dst = this.object.geometry.uvs;
dst.push(src[a + 0]);
dst.push(src[a + 1]);
},
addFace: function (a, b, c, d, ua, ub, uc, ud, na, nb, nc, nd) {
var vLen = this.vertices.length;
let vLen = this.vertices.length;
var ia = this.parseVertexIndex( a, vLen );
var ib = this.parseVertexIndex( b, vLen );
var ic = this.parseVertexIndex( c, vLen );
var id;
let ia = this.parseVertexIndex(a, vLen);
let ib = this.parseVertexIndex(b, vLen);
let ic = this.parseVertexIndex(c, vLen);
let id;
if (d === undefined) {
this.addVertex(ia, ib, ic);
@ -298,7 +254,7 @@
}
if (ua !== undefined) {
var uvLen = this.uvs.length;
let uvLen = this.uvs.length;
ia = this.parseUVIndex(ua, uvLen);
ib = this.parseUVIndex(ub, uvLen);
@ -315,8 +271,7 @@
}
if (na !== undefined) {
// Normals are many times the same. If so, skip function call and parseInt.
var nLen = this.normals.length;
let nLen = this.normals.length;
ia = this.parseNormalIndex(na, nLen);
ib = na === nb ? ia : this.parseNormalIndex(nb, nLen);
@ -332,21 +287,19 @@
}
}
},
addLineGeometry: function (vertices, uvs) {
this.object.geometry.type = 'Line';
var vLen = this.vertices.length;
var uvLen = this.uvs.length;
let vLen = this.vertices.length;
let uvLen = this.uvs.length;
for ( var vi = 0, l = vertices.length; vi < l; vi ++ ) {
for (let 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 ++ ) {
for (let uvi = 0, l = uvs.length; uvi < l; uvi ++) {
this.addUVLine(this.parseUVIndex(uvs[uvi], uvLen));
}
}
};
@ -378,43 +331,31 @@
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') {
lineSecondChar = line.charAt(1);
if (lineSecondChar === ' ' && (result = this.regexp.vertex_pattern.exec(line)) !== null) {
// 0 1 2 3
// ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
state.vertices.push(
parseFloat(result[1]),
parseFloat(result[2]),
parseFloat(result[3])
);
} else if (lineSecondChar === 'n' && (result = this.regexp.normal_pattern.exec(line)) !== null) {
// 0 1 2 3
// ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
state.normals.push(
parseFloat(result[1]),
parseFloat(result[2]),
parseFloat(result[3])
);
} else if (lineSecondChar === 't' && (result = this.regexp.uv_pattern.exec(line)) !== null) {
// 0 1 2
// ["vt 0.1 0.2", "0.1", "0.2"]
state.uvs.push(
parseFloat(result[1]),
parseFloat(result[2])
@ -424,39 +365,23 @@
}
} else if (lineFirstChar === "f") {
if ((result = this.regexp.face_vertex_uv_normal.exec(line)) !== null) {
// f vertex/uv/normal vertex/uv/normal vertex/uv/normal
// 0 1 2 3 4 5 6 7 8 9 10 11 12
// ["f 1/1/1 2/2/2 3/3/3", "1", "1", "1", "2", "2", "2", "3", "3", "3", undefined, undefined, undefined]
state.addFace(
result[1], result[4], result[7], result[10],
result[2], result[5], result[8], result[11],
result[3], result[6], result[9], result[12]
);
} else if ((result = this.regexp.face_vertex_uv.exec(line)) !== null) {
// f vertex/uv vertex/uv vertex/uv
// 0 1 2 3 4 5 6 7 8
// ["f 1/1 2/2 3/3", "1", "1", "2", "2", "3", "3", undefined, undefined]
state.addFace(
result[1], result[3], result[5], result[7],
result[2], result[4], result[6], result[8]
);
} else if ((result = this.regexp.face_vertex_normal.exec(line)) !== null) {
// f vertex//normal vertex//normal vertex//normal
// 0 1 2 3 4 5 6 7 8
// ["f 1//1 2//2 3//3", "1", "1", "2", "2", "3", "3", undefined, undefined]
state.addFace(
result[1], result[3], result[5], result[7],
undefined, undefined, undefined, undefined,
result[2], result[4], result[6], result[8]
);
} else if ((result = this.regexp.face_vertex.exec(line)) !== null) {
// f vertex vertex vertex
// 0 1 2 3 4
// ["f 1 2 3", "1", "2", "3", undefined]
state.addFace(
result[1], result[2], result[3], result[4]
);
@ -466,14 +391,14 @@
}
} else if (lineFirstChar === "l") {
var lineParts = line.substring( 1 ).trim().split( " " );
var lineVertices = [], lineUVs = [];
let lineParts = line.substring(1).trim().split(" ");
let lineVertices = [], lineUVs = [];
if (line.indexOf("/") === - 1) {
lineVertices = lineParts;
} else {
for ( var li = 0, llen = lineParts.length; li < llen; li ++ ) {
var parts = lineParts[ li ].split( "/" );
for (let li = 0, llen = lineParts.length; li < llen; li ++) {
let parts = lineParts[li].split("/");
if (parts[0] !== "") lineVertices.push(parts[0]);
if (parts[1] !== "") lineUVs.push(parts[1]);
@ -482,65 +407,42 @@
state.addLineGeometry(lineVertices, lineUVs);
} else if ((result = this.regexp.object_pattern.exec(line)) !== null) {
// o object_name
// or
// g group_name
// WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869
// var name = result[ 0 ].substr( 1 ).trim();
var name = ( " " + result[ 0 ].substr( 1 ).trim() ).substr( 1 );
let name = (" " + result[0].substr(1).trim()).substr(1);
state.startObject(name);
} else if (this.regexp.material_use_pattern.test(line)) {
// material
state.object.startMaterial(line.substring(7).trim(), state.materialLibraries);
} else if (this.regexp.material_library_pattern.test(line)) {
// mtl file
state.materialLibraries.push(line.substring(7).trim());
} else if ((result = this.regexp.smoothing_pattern.exec(line)) !== null) {
// 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
var value = result[ 1 ].trim().toLowerCase();
let value = result[1].trim().toLowerCase();
state.object.smooth = (value === '1' || value === 'on');
var material = state.object.currentMaterial();
let material = state.object.currentMaterial();
if (material) {
material.smooth = state.object.smooth;
}
} else {
// Handle null terminated files without exception
if (line === '\0') continue;
throw new Error("Unexpected line: '" + line + "'");
}
}
state.finalize();
var container = new THREE.Group();
let container = new THREE.Group();
container.materialLibraries = [].concat(state.materialLibraries);
for ( var i = 0, l = state.objects.length; i < l; i ++ ) {
var object = state.objects[ i ];
var geometry = object.geometry;
var materials = object.materials;
var isLine = ( geometry.type === 'Line' );
for (let i = 0, l = state.objects.length; i < l; i ++) {
let object = state.objects[i];
let geometry = object.geometry;
let materials = object.materials;
let isLine = (geometry.type === 'Line');
// Skip o/g line declarations that did not follow with any faces
if (geometry.vertices.length === 0) continue;
var buffergeometry = new THREE.BufferGeometry();
let buffergeometry = new THREE.BufferGeometry();
buffergeometry.addAttribute('position', new THREE.BufferAttribute(new Float32Array(geometry.vertices), 3));
@ -554,20 +456,18 @@
buffergeometry.addAttribute('uv', new THREE.BufferAttribute(new Float32Array(geometry.uvs), 2));
}
// Create materials
var createdMaterials = [];
let createdMaterials = [];
for ( var mi = 0, miLen = materials.length; mi < miLen ; mi++ ) {
var sourceMaterial = materials[mi];
var material = undefined;
for (let mi = 0, miLen = materials.length; mi < miLen ; mi++) {
let sourceMaterial = materials[mi];
let material = undefined;
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)) {
var materialLine = new THREE.LineBasicMaterial();
let materialLine = new THREE.LineBasicMaterial();
materialLine.copy(material);
material = materialLine;
}
@ -583,16 +483,15 @@
createdMaterials.push(material);
}
// Create mesh
var mesh;
let mesh;
if (createdMaterials.length > 1) {
for ( var mi = 0, miLen = materials.length; mi < miLen ; mi++ ) {
var sourceMaterial = materials[mi];
for (let mi = 0, miLen = materials.length; mi < miLen ; mi++) {
let sourceMaterial = materials[mi];
buffergeometry.addGroup(sourceMaterial.groupStart, sourceMaterial.groupCount, mi);
}
var multiMaterial = new THREE.MultiMaterial( createdMaterials );
let multiMaterial = new THREE.MultiMaterial(createdMaterials);
mesh = (! isLine ? new THREE.Mesh(buffergeometry, multiMaterial) : new THREE.LineSegments(buffergeometry, multiMaterial));
} else {
mesh = (! isLine ? new THREE.Mesh(buffergeometry, createdMaterials[0]) : new THREE.LineSegments(buffergeometry, createdMaterials[0]));