cesium 实现雷达波

构建雷达扫描

```

// TODO 未集成
export class RadarRadiationWave {
viewer:any;

  • init(map: any){
  • this.viewer = map;
  • this.initRadarRiationWave1();
  • this.initRadarRiationWave2();
  • }
  •  
  • initRadarRiationWave1 () {
  • var e = this.viewer.scene, i = Cesium.Cartesian3.fromDegrees(112.39, 39.9),
  • a = Cesium.Cartesian3.fromDegrees(112.39, 39.9, 2e5),
  • t = Cesium.Cartesian3.fromDegrees(112.39, 39.9, 4e5),
  • r = Cesium.Matrix4.multiplyByTranslation(Cesium.Transforms.eastNorthUpToFixedFrame(i), new Cesium.Cartesian3(0, 0, 2e5), new Cesium.Matrix4);
  • this.viewer.camera.flyToBoundingSphere(new Cesium.BoundingSphere(a, 4e5));
  • e.primitives.add(new Cesium.BillboardCollection).add({
  • image: "./images/svg/wave.svg",
  • position: t,
  • horizontalOrigin: Cesium.HorizontalOrigin.LEFT,
  • verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
  • pixelOffset: new Cesium.Cartesian2(-10, 10),
  • scale: .3
  • });
  • var n = new Cesium.CylinderGeometry({
  • length: 4e5,
  • topRadius: 0,
  • bottomRadius: 12e4,
  • vertexFormat: Cesium.MaterialAppearance.MaterialSupport.TEXTURED.vertexFormat
  • }), s = new Cesium.GeometryInstance({geometry: n, modelMatrix: r}),
  • o = e.primitives.add(new Cesium.Primitive({
  • geometryInstances: [s],
  • appearance: new Cesium.MaterialAppearance({
  • material: new Cesium.Material({
  • fabric: {
  • type: "VtxfShader1",
  • uniforms: {
  • color: new Cesium.Color(.2, 1, 0, 1),
  • repeat: 30,
  • offset: 0,
  • thickness: .3
  • },
  • source: "\n uniform vec4 color;\n uniform float repeat;\n uniform float offset;\n uniform float thickness;\n czm_material czm_getMaterial(czm_materialInput materialInput)\n {\n czm_material material = czm_getDefaultMaterial(materialInput);\n float sp = 1.0/repeat;\n vec2 st = materialInput.st;\n float dis = distance(st, vec2(0.5));\n float m = mod(dis + offset, sp);\n float a = step(sp*(1.0-thickness), m);\n material.diffuse = color.rgb;\n material.alpha = a * color.a;\n return material;\n }\n "
  • }, translucent: !1
  • }), faceForward: !1, closed: !0
  • })
  • }));
  • this.viewer.scene.preUpdate.addEventListener(function () {
 更多参考 https://xiaozhuanlan.com/topic/3748102965
posted @ 2022-01-20 17:52  haibalai  阅读(634)  评论(0)  编辑  收藏  举报