请给出一个czml的操作范例代码
时间: 2024-05-04 22:16:06 浏览: 12
以下是一个简单的czml操作范例代码:
```
[{
"id": "document",
"name": "CZML Document",
"version": "1.0"
}, {
"id": "myPoint",
"name": "My Point",
"position": {
"cartographicDegrees": [-75.0, 43.0, 100000.0]
},
"point": {
"color": {
"rgba": [255, 0, 0, 255]
},
"outlineColor": {
"rgba": [0, 255, 0, 255]
},
"outlineWidth": 2,
"pixelSize": 10,
"show": true
}
}]
```
这个czml代码的作用是创建一个名为"My Point"的点,位于经度-75、纬度43的点上,并且该点的高度为100000。这个点的颜色为红色,边框为绿色,边框宽度为2个像素,大小为10像素。
相关问题
给一个循环czml文件
以下是一个循环生成czml文件的示例代码:
```python
import json
# 生成一个包含位置和时间信息的czml包
def generate_czml_packet(position, time):
czml_packet = {
"position": {
"cartographicDegrees": position
},
"point": {
"color": {
"rgba": [255, 0, 0, 255]
},
"outlineColor": {
"rgba": [0, 0, 0, 255]
},
"outlineWidth": 2,
"pixelSize": 10,
"heightReference": "CLAMP_TO_GROUND"
},
"availability": time
}
return czml_packet
# 生成多个czml包并组合成czml文档
def generate_czml_document():
czml_document = {
"version": "1.0",
"id": "document",
"name": "Sample CZML Document",
"clock": {
"interval": "2012-08-04T16:00:00Z/2012-08-04T16:05:00Z",
"currentTime": "2012-08-04T16:00:00Z",
"multiplier": 1,
"range": "LOOP_STOP",
"step": "SYSTEM_CLOCK_MULTIPLIER"
},
"packetData": []
}
# 循环生成位置和时间信息,并添加到czml文档中
for i in range(5):
position = [116.3 + i * 0.01, 39.9 + i * 0.01, 0]
time = "2012-08-04T16:0{}:00Z/2012-08-04T16:0{}:00Z".format(i, i+1)
czml_packet = generate_czml_packet(position, time)
czml_document["packetData"].append(czml_packet)
return json.dumps(czml_document)
# 输出czml文档
print(generate_czml_document())
```
这个示例代码会生成一个包含5个czml包的czml文档,每个czml包都包含一个位置和时间信息。在循环中,我们可以修改位置和时间信息,从而生成不同的czml文档。
写一个cesium1卫星运行轨迹的czml
以下是一个简单的Cesium CZML文件,用于绘制Cesium-1卫星的运行轨迹:
```
[{
"id": "document",
"name": "Cesium-1 Satellite Orbit",
"version": "1.0"
}, {
"id": "Cesium-1",
"name": "Cesium-1 Satellite",
"availability": "2019-01-01T00:00:00Z/2019-12-31T00:00:00Z",
"position": {
"epoch": "2019-01-01T00:00:00Z",
"cartographicDegrees": [
0, -80.55, 500000, 0, 0, -1,
30, -70.82, 500000, 0, 0, -1,
60, -60.27, 500000, 0, 0, -1,
90, -49.56, 500000, 0, 0, -1,
120, -38.59, 500000, 0, 0, -1,
150, -27.36, 500000, 0, 0, -1,
180, -15.86, 500000, 0, 0, -1,
210, -4.11, 500000, 0, 0, -1,
240, 7.93, 500000, 0, 0, -1,
270, 20.19, 500000, 0, 0, -1,
300, 32.9, 500000, 0, 0, -1,
330, 45.97, 500000, 0, 0, -1
]
},
"point": {
"color": {
"rgba": [255, 0, 0, 255]
},
"outlineColor": {
"rgba": [0, 0, 0, 255]
},
"outlineWidth": 2,
"pixelSize": 10
},
"path": {
"material": {
"solidColor": {
"color": {
"rgba": [255, 255, 255, 100]
}
}
},
"width": 5,
"resolution": 60
}
}]
```
该文件定义了一个Cesium CZML文档,其中包含一个名为“Cesium-1”的实体,该实体代表Cesium-1卫星。该实体具有一个时刻序列的位置属性,该属性定义卫星在地球上的位置。该实体还具有一个点图形,表示卫星的当前位置,以及一个路径图形,表示卫星的轨迹。该路径使用白色填充,并在每秒钟的60帧下绘制。