1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
/**
* @author Kai Salmen / https://kaisalmen.de
* Development repository: https://github.com/kaisalmen/WWOBJLoader
*/
import {
BufferAttribute,
BufferGeometry,
LineSegments,
Mesh,
Points
} from "../../../../../build/three.module.js";
/**
*
* @param {MaterialHandler} materialHandler
* @constructor
*/
const MeshReceiver = function ( materialHandler ) {
this.logging = {
enabled: false,
debug: false
};
this.callbacks = {
onProgress: null,
onMeshAlter: null
};
this.materialHandler = materialHandler;
};
MeshReceiver.prototype = {
constructor: MeshReceiver,
/**
* Enable or disable logging in general (except warn and error), plus enable or disable debug logging.
*
* @param {boolean} enabled True or false.
* @param {boolean} debug True or false.
*/
setLogging: function ( enabled, debug ) {
this.logging.enabled = enabled === true;
this.logging.debug = debug === true;
},
/**
*
* @param {Function} onProgress
* @param {Function} onMeshAlter
* @private
*/
_setCallbacks: function ( onProgress, onMeshAlter ) {
if ( onProgress !== null && onProgress !== undefined && onProgress instanceof Function ) {
this.callbacks.onProgress = onProgress;
}
if ( onMeshAlter !== null && onMeshAlter !== undefined && onMeshAlter instanceof Function ) {
this.callbacks.onMeshAlter = onMeshAlter;
}
},
/**
* Builds one or multiple meshes from the data described in the payload (buffers, params, material info).
*
* @param {Object} meshPayload Raw mesh description (buffers, params, materials) used to build one to many meshes.
* @returns {Mesh[]} mesh Array of {@link Mesh}
*/
buildMeshes: function ( meshPayload ) {
let meshName = meshPayload.params.meshName;
let buffers = meshPayload.buffers;
let bufferGeometry = new BufferGeometry();
if ( buffers.vertices !== undefined && buffers.vertices !== null ) {
bufferGeometry.setAttribute( 'position', new BufferAttribute( new Float32Array( buffers.vertices ), 3 ) );
}
if ( buffers.indices !== undefined && buffers.indices !== null ) {
bufferGeometry.setIndex( new BufferAttribute( new Uint32Array( buffers.indices ), 1 ) );
}
if ( buffers.colors !== undefined && buffers.colors !== null ) {
bufferGeometry.setAttribute( 'color', new BufferAttribute( new Float32Array( buffers.colors ), 3 ) );
}
if ( buffers.normals !== undefined && buffers.normals !== null ) {
bufferGeometry.setAttribute( 'normal', new BufferAttribute( new Float32Array( buffers.normals ), 3 ) );
} else {
bufferGeometry.computeVertexNormals();
}
if ( buffers.uvs !== undefined && buffers.uvs !== null ) {
bufferGeometry.setAttribute( 'uv', new BufferAttribute( new Float32Array( buffers.uvs ), 2 ) );
}
if ( buffers.skinIndex !== undefined && buffers.skinIndex !== null ) {
bufferGeometry.setAttribute( 'skinIndex', new BufferAttribute( new Uint16Array( buffers.skinIndex ), 4 ) );
}
if ( buffers.skinWeight !== undefined && buffers.skinWeight !== null ) {
bufferGeometry.setAttribute( 'skinWeight', new BufferAttribute( new Float32Array( buffers.skinWeight ), 4 ) );
}
let material, materialName, key;
let materialNames = meshPayload.materials.materialNames;
let createMultiMaterial = meshPayload.materials.multiMaterial;
let multiMaterials = [];
for ( key in materialNames ) {
materialName = materialNames[ key ];
material = this.materialHandler.getMaterial( materialName );
if ( createMultiMaterial ) multiMaterials.push( material );
}
if ( createMultiMaterial ) {
material = multiMaterials;
let materialGroups = meshPayload.materials.materialGroups;
let materialGroup;
for ( key in materialGroups ) {
materialGroup = materialGroups[ key ];
bufferGeometry.addGroup( materialGroup.start, materialGroup.count, materialGroup.index );
}
}
let meshes = [];
let mesh;
let callbackOnMeshAlterResult;
let useOrgMesh = true;
let geometryType = meshPayload.geometryType === null ? 0 : meshPayload.geometryType;
if ( this.callbacks.onMeshAlter ) {
callbackOnMeshAlterResult = this.callbacks.onMeshAlter(
{
detail: {
meshName: meshName,
bufferGeometry: bufferGeometry,
material: material,
geometryType: geometryType
}
}
);
}
// here LoadedMeshUserOverride is required to be provided by the callback used to alter the results
if ( callbackOnMeshAlterResult ) {
if ( callbackOnMeshAlterResult.isDisregardMesh() ) {
useOrgMesh = false;
} else if ( callbackOnMeshAlterResult.providesAlteredMeshes() ) {
for ( let i in callbackOnMeshAlterResult.meshes ) {
meshes.push( callbackOnMeshAlterResult.meshes[ i ] );
}
useOrgMesh = false;
}
}
if ( useOrgMesh ) {
if ( meshPayload.computeBoundingSphere ) bufferGeometry.computeBoundingSphere();
if ( geometryType === 0 ) {
mesh = new Mesh( bufferGeometry, material );
} else if ( geometryType === 1 ) {
mesh = new LineSegments( bufferGeometry, material );
} else {
mesh = new Points( bufferGeometry, material );
}
mesh.name = meshName;
meshes.push( mesh );
}
let progressMessage = meshPayload.params.meshName;
if ( meshes.length > 0 ) {
let meshNames = [];
for ( let i in meshes ) {
mesh = meshes[ i ];
meshNames[ i ] = mesh.name;
}
progressMessage += ': Adding mesh(es) (' + meshNames.length + ': ' + meshNames + ') from input mesh: ' + meshName;
progressMessage += ' (' + ( meshPayload.progress.numericalValue * 100 ).toFixed( 2 ) + '%)';
} else {
progressMessage += ': Not adding mesh: ' + meshName;
progressMessage += ' (' + ( meshPayload.progress.numericalValue * 100 ).toFixed( 2 ) + '%)';
}
if ( this.callbacks.onProgress ) {
this.callbacks.onProgress( 'progress', progressMessage, meshPayload.progress.numericalValue );
}
return meshes;
}
};
/**
* Object to return by callback onMeshAlter. Used to disregard a certain mesh or to return one to many meshes.
* @class
*
* @param {boolean} disregardMesh=false Tell implementation to completely disregard this mesh
* @param {boolean} disregardMesh=false Tell implementation that mesh(es) have been altered or added
*/
const LoadedMeshUserOverride = function ( disregardMesh, alteredMesh ) {
this.disregardMesh = disregardMesh === true;
this.alteredMesh = alteredMesh === true;
this.meshes = [];
};
LoadedMeshUserOverride.prototype = {
constructor: LoadedMeshUserOverride,
/**
* Add a mesh created within callback.
*
* @param {Mesh} mesh
*/
addMesh: function ( mesh ) {
this.meshes.push( mesh );
this.alteredMesh = true;
},
/**
* Answers if mesh shall be disregarded completely.
*
* @returns {boolean}
*/
isDisregardMesh: function () {
return this.disregardMesh;
},
/**
* Answers if new mesh(es) were created.
*
* @returns {boolean}
*/
providesAlteredMeshes: function () {
return this.alteredMesh;
}
};
export {
MeshReceiver,
LoadedMeshUserOverride
};
|
