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<title>数字城市</title>
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padding: 0px;
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var bgImagery;
var fsBody = `
// 可以修改的参数
// 注意shader中写浮点数是,一定要带小数点,否则会报错,比如0需要写成0.0,1要写成1.0
float _baseHeight = 0.0; // 物体的基础高度,需要修改成一个合适的建筑基础高度
float _heightRange = 60.0; // 高亮的范围(_baseHeight ~ _baseHeight + _heightRange) 默认是 0-60米
float _glowRange = 300.0; // 光环的移动范围(高度)