先上效果：
代码：
axios.get('/data/provinceboundary.json').then((res) => {
const geometries = res.data.geometries
const geometryInstances: any[] = []
geometries.forEach((geometry: any) => {
const coordinates = geometry.coordinates
for (let i = 0; i < coordinates.length; i++) {
coordinates[i].push(10000)
}
const geometryInstance = new GeometryInstance({
geometry: new WallGeometry({
positions: Cartesian3.fromDegreesArrayHeights(coordinates.flat()),
}),
})
geometryInstances.push(geometryInstance)
// console.log(coordinates.length)
// // console.log(coordinates.length)
// console.log(coordinates)
// provinceBoundaryDataSource.entities.add(
// new Entity({
// wall: new WallGraphics({
// positions: Cartesian3.fromDegreesArrayHeights(coordinates.flat()),
// material: Color.GREEN,
// fill: true,
// outline: false,
// shadows: ShadowMode.ENABLED,
// }),
// })
// )
})
provinceBoundaryPrimitive = viewer.scene.primitives.add(
new Primitive({
geometryInstances: geometryInstances,
appearance: new EllipsoidSurfaceAppearance({
material: Material.fromType('Fade', {
fadeInColor: new Color(22 / 255, 132 / 255, 129 / 255, 0.0),
fadeOutColor: Color.BISQUE,
repeat: false,
fadeDirection: new Cartesian2(0.0, 1.0),
maximumDistance: 1.0,
time: {
x: 0.0,
y: 0.0,
},
}),
aboveGround: true,
}),
})
)
// viewer.dataSources.add(provinceBoundaryDataSource)
// changeTime()
})
