Cesium 封装雪效果

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已于 2024-01-28 11:42:08 修改

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于 2024-01-28 11:40:04 首次发布

本文链接：https://blog.youkuaiyun.com/QQhelphelp/article/details/135893415

/*
 * @Descripttion: 
 * @version: 1.0
 * @Author: tanzheng
 * @Date: 2024-1-22 15:30:42
 */
/**
 * 
 * 封装天气场景
 * 雪天
 */
class Snow{

    constructor(viewer){
        
    }
    //创建雪
    createSnow(){
        this.collection = viewer.scene.postProcessStages;
        this._snow = new Cesium.PostProcessStage({
            name: 'czm_snow',
            fragmentShader: this.getSnow()
        });
        this.collection.add(this._snow);
        viewer.scene.skyAtmosphere.hueShift = -0.8;
        viewer.scene.skyAtmosphere.saturationShift = -0.7;
        viewer.scene.skyAtmosphere.brightnessShift = -0.33;
        viewer.scene.fog.density = 0.001;
        viewer.scene.fog.minimumBrightness = 0.8;
        
    }
    //获得雪的shader
    getSnow(){
        var fs= "uniform sampler2D colorTexture;\n\
        varying vec2 v_textureCoordinates;\n\
        \n\
            float snow(vec2 uv,float scale)\n\
            {\n\

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