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jlc
cesium-frame
Commits
e22378a3
Commit
e22378a3
authored
Aug 05, 2024
by
jlc
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update:车案例的修改
parent
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Vehicle.png
src/assets/Vehicle.png
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vehicle-function.js
src/examples/movingTarget/vehicle/vehicle-function.js
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src/assets/Vehicle.png
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src/examples/movingTarget/vehicle/vehicle-function.js
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e22378a3
export
function
addVehicle
(
viewer
)
{
const
czml
=
[
{
id
:
"document"
,
name
:
"Vehicle"
,
version
:
"1.0"
,
clock
:
{
interval
:
"2019-08-28T04:00:00Z/2019-08-28T04:20:00Z"
,
currentTime
:
"2019-08-28T04:00:00.00Z"
,
multiplier
:
1
,
range
:
"LOOP_STOP"
,
step
:
"SYSTEM_CLOCK_MULTIPLIER"
}
},
{
id
:
"path"
,
name
:
"path for Vehicle"
,
description
:
"<p>this is a description</p>"
,
availability
:
"2019-08-28T04:00:00Z/2019-08-28T04:20:00Z"
,
path
:
{
material
:
{
polylineOutline
:
{
color
:
{
rgba
:
[
255
,
0
,
255
,
255
],
},
outlineColor
:
{
rgba
:
[
0
,
255
,
255
,
255
],
},
outlineWidth
:
5
},
},
width
:
8
,
// 折线宽度
leadTime
:
5
,
trailTime
:
50000
,
resolution
:
5
,
},
orientation
:
{
"velocityReference"
:
"#position"
},
model
:
{
gltf
:
'https://raw.githubusercontent.com/jinlinchao123/Cesium-assets/main/3Dmodel/CesiumMilkTruck.glb'
,
minimumPixelSize
:
128
,
},
position
:
{
epoch
:
"2019-08-28T04:00:00.00Z"
,
cartographicDegrees
:
[
0
,
120
,
30
,
0
,
1200
,
121
,
30
,
0
]
}
},
// 定义开始时间
let
start
=
Cesium
.
JulianDate
.
fromDate
(
new
Date
());
// 设置时间轴当前时间为开始时间
start
=
Cesium
.
JulianDate
.
addHours
(
start
,
8
,
new
Cesium
.
JulianDate
());
// 开始时间加8小时改为北京时间
let
stop
=
Cesium
.
JulianDate
.
addSeconds
(
start
,
400
,
new
Cesium
.
JulianDate
());
// 设置结束时间为开始时间加400秒
viewer
.
clock
.
startTime
=
start
.
clone
();
// 设置时钟开始时间
viewer
.
clock
.
currentTime
=
start
.
clone
();
// 设置时钟当前时间
viewer
.
clock
.
stopTime
=
stop
.
clone
();
// 设置时钟结束时间
viewer
.
clock
.
multiplier
=
10
;
// 设置时间倍数
viewer
.
timeline
.
zoomTo
(
start
,
stop
);
// 时间轴绑定到viewer上去
viewer
.
clock
.
clockRange
=
Cesium
.
ClockRange
.
LOOP_STOP
;
// 循环执行,到达终止时间,重新从起点时间开始
function
computeFlight
(
source
)
{
var
property
=
new
Cesium
.
SampledPositionProperty
();
for
(
var
i
=
0
;
i
<
source
.
length
;
i
++
)
{
var
time
=
Cesium
.
JulianDate
.
addSeconds
(
start
,
source
[
i
].
time
,
new
Cesium
.
JulianDate
());
var
position
=
Cesium
.
Cartesian3
.
fromDegrees
(
source
[
i
].
longitude
,
source
[
i
].
latitude
,
source
[
i
].
height
);
property
.
addSample
(
time
,
position
);
}
return
property
;
}
let
data
=
[
{
longitude
:
108.95847801120208
,
latitude
:
34.21765422118126
,
height
:
-
3.948
,
time
:
0
},
{
longitude
:
108.95849254781227
,
latitude
:
34.21800309998983
,
height
:
-
3.839
,
time
:
100
},
{
longitude
:
108.9594164044393
,
latitude
:
34.21802855891169
,
height
:
-
2.579
,
time
:
200
},
];
var
dataSourcePromise
=
viewer
.
dataSources
.
add
(
Cesium
.
CzmlDataSource
.
load
(
czml
));
dataSourcePromise
.
then
(
function
(
dataSource
)
{
// 根据模型所在的实体去进行加载
viewer
.
trackedEntity
=
dataSource
.
entities
.
getById
(
'path'
);
}).
catch
(
function
(
error
)
{
console
.
error
(
error
);
let
property
=
computeFlight
(
data
);
// 添加模型
let
entityCar
=
viewer
.
entities
.
add
({
id
:
"car"
,
availability
:
new
Cesium
.
TimeIntervalCollection
([
//要添加到集合中的间隔数组
new
Cesium
.
TimeInterval
({
start
:
start
,
stop
:
stop
}),
]),
position
:
property
,
path
:
{
resolution
:
1
,
leadTime
:
0
,
trailTime
:
200
,
material
:
new
Cesium
.
PolylineGlowMaterialProperty
({
glowPower
:
0.1
,
color
:
Cesium
.
Color
.
ORANGE
}),
width
:
10
},
orientation
:
new
Cesium
.
VelocityOrientationProperty
(
property
),
// 根据速度计算方向角
model
:
{
uri
:
'https://raw.githubusercontent.com/jinlinchao123/Cesium-assets/main/3Dmodel/CesiumMilkTruck.glb'
,
minimumPixelSize
:
2
,
}
});
}
viewer
.
trackedEntity
=
entityCar
;
// 视角跟随模型
}
\ No newline at end of file
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