/
ModelVisualizer.js
228 lines (202 loc) · 7.8 KB
/
ModelVisualizer.js
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
/*global define*/
define([
'../Core/AssociativeArray',
'../Core/Cartesian3',
'../Core/defined',
'../Core/destroyObject',
'../Core/DeveloperError',
'../Core/Matrix3',
'../Core/Matrix4',
'../Core/Quaternion',
'../Core/Transforms',
'../Scene/Model',
'../Scene/ModelAnimationLoop',
'./Property'
], function(
AssociativeArray,
Cartesian3,
defined,
destroyObject,
DeveloperError,
Matrix3,
Matrix4,
Quaternion,
Transforms,
Model,
ModelAnimationLoop,
Property) {
"use strict";
var defaultScale = 1.0;
var defaultMinimumPixelSize = 0.0;
var matrix3Scratch = new Matrix3();
var position = new Cartesian3();
var orientation = new Quaternion();
/**
* A {@link Visualizer} which maps {@link Entity#model} to a {@link Model}.
* @alias ModelVisualizer
* @constructor
*
* @param {Scene} scene The scene the primitives will be rendered in.
* @param {EntityCollection} entityCollection The entityCollection to visualize.
*/
var ModelVisualizer = function(scene, entityCollection) {
//>>includeStart('debug', pragmas.debug);
if (!defined(scene)) {
throw new DeveloperError('scene is required.');
}
if (!defined(entityCollection)) {
throw new DeveloperError('entityCollection is required.');
}
//>>includeEnd('debug');
entityCollection.collectionChanged.addEventListener(ModelVisualizer.prototype._onCollectionChanged, this);
this._scene = scene;
this._primitives = scene.primitives;
this._entityCollection = entityCollection;
this._modelHash = {};
this._entitiesToVisualize = new AssociativeArray();
this._onCollectionChanged(entityCollection, entityCollection.entities, [], []);
};
/**
* Updates models created this visualizer to match their
* Entity counterpart at the given time.
*
* @param {JulianDate} time The time to update to.
* @returns {Boolean} This function always returns true.
*/
ModelVisualizer.prototype.update = function(time) {
//>>includeStart('debug', pragmas.debug);
if (!defined(time)) {
throw new DeveloperError('time is requied.');
}
//>>includeEnd('debug');
var context = this._scene.context;
var entities = this._entitiesToVisualize.values;
var modelHash = this._modelHash;
var primitives = this._primitives;
var scene = this._scene;
for (var i = 0, len = entities.length; i < len; i++) {
var entity = entities[i];
var modelGraphics = entity._model;
var uri;
var modelData = modelHash[entity.id];
var show = entity.isAvailable(time) && Property.getValueOrDefault(modelGraphics._show, time, true);
if (show) {
position = Property.getValueOrUndefined(entity._position, time, position);
uri = Property.getValueOrUndefined(modelGraphics._uri, time);
show = defined(position) && defined(uri);
}
if (!show) {
if (defined(modelData)) {
modelData.modelPrimitive.show = false;
}
continue;
}
var model = defined(modelData) ? modelData.modelPrimitive : undefined;
if (!defined(model) || uri !== modelData.uri) {
if (defined(model)) {
primitives.remove(model);
if (!model.isDestroyed()) {
model.destroy();
}
delete modelHash[entity.id];
}
model = Model.fromGltf({
url : uri
});
model.readyToRender.addEventListener(readyToRender, this);
model.id = entity;
primitives.add(model);
modelData = {
modelPrimitive : model,
uri : uri,
position : undefined,
orientation : undefined
};
modelHash[entity.id] = modelData;
}
model.show = true;
model.scale = Property.getValueOrDefault(modelGraphics._scale, time, defaultScale);
model.minimumPixelSize = Property.getValueOrDefault(modelGraphics._minimumPixelSize, time, defaultMinimumPixelSize);
orientation = Property.getValueOrUndefined(entity._orientation, time, orientation);
if (!Cartesian3.equals(position, modelData.position) || !Quaternion.equals(orientation, modelData.orientation)) {
if (!defined(orientation)) {
Transforms.northEastDownToFixedFrame(position, scene.globe.ellipsoid, model.modelMatrix);
} else {
Matrix4.fromRotationTranslation(Matrix3.fromQuaternion(orientation, matrix3Scratch), position, model.modelMatrix);
}
modelData.position = Cartesian3.clone(position, modelData.position);
modelData.orientation = Quaternion.clone(orientation, modelData.orientation);
}
}
return true;
};
/**
* Returns true if this object was destroyed; otherwise, false.
*
* @returns {Boolean} True if this object was destroyed; otherwise, false.
*/
ModelVisualizer.prototype.isDestroyed = function() {
return false;
};
/**
* Removes and destroys all primitives created by this instance.
*/
ModelVisualizer.prototype.destroy = function() {
this._entityCollection.collectionChanged.removeEventListener(ModelVisualizer.prototype._onCollectionChanged, this);
var entities = this._entitiesToVisualize.values;
var modelHash = this._modelHash;
var primitives = this._primitives;
for (var i = entities.length - 1; i > -1; i--) {
removeModel(this, entities[i], modelHash, primitives);
}
return destroyObject(this);
};
/**
* @private
*/
ModelVisualizer.prototype._onCollectionChanged = function(entityCollection, added, removed, changed) {
var i;
var entity;
var entities = this._entitiesToVisualize;
var modelHash = this._modelHash;
var primitives = this._primitives;
for (i = added.length - 1; i > -1; i--) {
entity = added[i];
if (defined(entity._model) && defined(entity._position)) {
entities.set(entity.id, entity);
}
}
for (i = changed.length - 1; i > -1; i--) {
entity = changed[i];
if (defined(entity._model) && defined(entity._position)) {
entities.set(entity.id, entity);
} else {
removeModel(this, entity, modelHash, primitives);
entities.remove(entity.id);
}
}
for (i = removed.length - 1; i > -1; i--) {
entity = removed[i];
removeModel(this, entity, modelHash, primitives);
entities.remove(entity.id);
}
};
function removeModel(visualizer, entity, modelHash, primitives) {
var modelData = modelHash[entity.id];
if (defined(modelData)) {
var model = modelData.modelPrimitive;
model.readyToRender.removeEventListener(readyToRender, visualizer);
primitives.remove(model);
if (!model.isDestroyed()) {
model.destroy();
}
delete modelHash[entity.id];
}
}
function readyToRender(model) {
model.activeAnimations.addAll({
loop : ModelAnimationLoop.REPEAT
});
}
return ModelVisualizer;
});