Cesium 自定义Material 系列 （二十二）

• 对于弹性圆效果 我们先定义一下他的interface, 方便使用的人知道他的调用参数

• export interface PMaterialElasticCircle{
• color?: any,
• speed?: number,
• }

• 对于弹性圆我们叫 MaterialElasticCircle

``javascript import { MaterialProperty } from "../MaterialProperty"; const defaultOption: PMaterialElasticCircle = { color: new Cesium.Color(1.0, 0.0, 0.0, 0.7), speed: 5 } //弹性圆效果 export class MaterialElasticCircle extends MaterialProperty { protected _getType(option: any): string { return "MaterialElasticCircle" } constructor(option = defaultOption) { super(MaterialElasticCircle.prototype, defaultOption, option); } protected _getTranslucent(material: any) { return material.uniforms.color.alpha < 1.0; } protected getSource(option: any): string { return
uniform vec4 color;
uniform float speed;

• float circle(vec2 uv, float r, float blur) {
• float d = length(uv) * 2.0;
• float c = smoothstep(r+blur, r, d);
• return c;
• }
•  
• czm_material czm_getMaterial(czm_materialInput materialInput)
• {
• czm_material material = czm_getDefaultMaterial(materialInput);

 更多参考 https://xiaozhuanlan.com/topic/3547862091