-
Notifications
You must be signed in to change notification settings - Fork 8
/
interpolation_heading_pitch_roll.js
137 lines (118 loc) · 4.75 KB
/
interpolation_heading_pitch_roll.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
var viewer = new Cesium.Viewer('cesiumContainer', {
infoBox: false, //Disable InfoBox widget
selectionIndicator: false, //Disable selection indicator
shouldAnimate: true, // Enable animations
terrainProvider: Cesium.createWorldTerrain()
});
//Enable lighting based on sun/moon positions
viewer.scene.globe.enableLighting = true;
//Enable depth testing so things behind the terrain disappear.
viewer.scene.globe.depthTestAgainstTerrain = true;
//Set the random number seed for consistent results.
Cesium.Math.setRandomNumberSeed(3);
//Set bounds of our simulation time
var start = Cesium.JulianDate.fromDate(new Date(2015, 2, 25, 16));
var stop = Cesium.JulianDate.addSeconds(start, 360, new Cesium.JulianDate());
//Make sure viewer is at the desired time.
viewer.clock.startTime = start.clone();
viewer.clock.stopTime = stop.clone();
viewer.clock.currentTime = start.clone();
viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP; //Loop at the end
viewer.clock.multiplier = 10;
//Set timeline to simulation bounds
viewer.timeline.zoomTo(start, stop);
//Generate a random circular pattern with varying heights.
function computeCirclularFlight(lon, lat, radius) {
var property = new Cesium.SampledPositionProperty();
for (var i = 0; i <= 360; i += 45) {
var radians = Cesium.Math.toRadians(i);
var time = Cesium.JulianDate.addSeconds(start, i, new Cesium.JulianDate());
var position = Cesium.Cartesian3.fromDegrees(lon + (radius * 1.5 * Math.cos(radians)), lat + (radius * Math.sin(radians)), Cesium.Math.nextRandomNumber() * 500 + 1750);
property.addSample(time, position);
//Also create a point for each sample we generate.
viewer.entities.add({
position : position,
point : {
pixelSize : 8,
color : Cesium.Color.TRANSPARENT,
outlineColor : Cesium.Color.YELLOW,
outlineWidth : 3
}
});
}
return property;
}
//Compute the entity position property.
var position = computeCirclularFlight(-112.110693, 36.0994841, 0.03);
var heading = 1.633305658542387;
var pitch = 2.038045447177264;
var roll = 0;
var hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
//Actually create the entity
var entity = viewer.entities.add({
//Set the entity availability to the same interval as the simulation time.
availability : new Cesium.TimeIntervalCollection([new Cesium.TimeInterval({
start : start,
stop : stop
})]),
//Use our computed positions
position : position,
//Automatically compute orientation based on position movement.
orientation : Cesium.Transforms.headingPitchRollQuaternion(new Cesium.Cartesian3(-1371108.6511167218, -5508684.080096612, 2901825.449865087), hpr),
//Load the Cesium plane model to represent the entity
cylinder : {
length : 400.0,
topRadius : 10.0,
bottomRadius : 200.0,
material : Cesium.Color.RED
},
//Show the path as a pink line sampled in 1 second increments.
path : {
resolution : 1,
material : new Cesium.PolylineGlowMaterialProperty({
glowPower : 0.1,
color : Cesium.Color.YELLOW
}),
width : 10
}
});
//Add button to view the path from the top down
Sandcastle.addDefaultToolbarButton('View Top Down', function() {
viewer.trackedEntity = undefined;
viewer.zoomTo(viewer.entities, new Cesium.HeadingPitchRange(0, Cesium.Math.toRadians(-90)));
});
//Add button to view the path from the side
Sandcastle.addToolbarButton('View Side', function() {
viewer.trackedEntity = undefined;
viewer.zoomTo(viewer.entities, new Cesium.HeadingPitchRange(Cesium.Math.toRadians(-90), Cesium.Math.toRadians(-15), 7500));
});
//Add button to track the entity as it moves
Sandcastle.addToolbarButton('View Aircraft', function() {
viewer.trackedEntity = entity;
});
//Add a combo box for selecting each interpolation mode.
Sandcastle.addToolbarMenu([{
text : 'Interpolation: Linear Approximation',
onselect : function() {
entity.position.setInterpolationOptions({
interpolationDegree : 1,
interpolationAlgorithm : Cesium.LinearApproximation
});
}
}, {
text : 'Interpolation: Lagrange Polynomial Approximation',
onselect : function() {
entity.position.setInterpolationOptions({
interpolationDegree : 5,
interpolationAlgorithm : Cesium.LagrangePolynomialApproximation
});
}
}, {
text : 'Interpolation: Hermite Polynomial Approximation',
onselect : function() {
entity.position.setInterpolationOptions({
interpolationDegree : 2,
interpolationAlgorithm : Cesium.HermitePolynomialApproximation
});
}
}], 'interpolationMenu');