gisthreemap/src/Cesium/extendMaterial/CircleDiffuseMaterialProperty.js

基于webGL的三维api

/*
 * @Description: 扩散圆效果（参考开源代码）
 * @Version: 1.0
 */
class CircleDiffuseMaterialProperty {
  constructor(options) {
      this._definitionChanged = new Cesium.Event();
      this._color = undefined;
      this._speed = undefined;
      this.color = options.color;
      this.speed = options.speed;
  };

  get isConstant() {
      return false;
  }

  get definitionChanged() {
      return this._definitionChanged;
  }

  getType(time) {
      return Cesium.Material.CircleDiffuseMaterialType;
  }

  getValue(time, result) {
      if (!Cesium.defined(result)) {
          result = {};
      }

      result.color = Cesium.Property.getValueOrDefault(this._color, time, Cesium.Color.RED, result.color);
      result.speed = Cesium.Property.getValueOrDefault(this._speed, time, 10, result.speed);
      return result
  }

  equals(other) {
      return (this === other ||
          (other instanceof CircleDiffuseMaterialProperty &&
              Cesium.Property.equals(this._color, other._color) &&
              Cesium.Property.equals(this._speed, other._speed))
      )
  }
}

export default CircleDiffuseMaterialProperty