arcgis js 4 使用d3.js 添加滤镜光
我们利用d3滤镜为d3元素增加光的效果
我们存一些全局变量
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this.animateOption = null;
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this.defs = null;
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this.animateId = "";
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this.feDropShadow = null;
滤镜初始化
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function create(option){
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this.animateOption = option;
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this.defs = this.svg.append("defs");
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let linearGradient = this.defs.append("filter")
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.attr("id",this.animateOption.id)
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.attr("x","-50%")
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.attr("y","-50%")
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.attr("width","200%")
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.attr("height","200%")
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this.feDropShadow = linearGradient.append("feDropShadow")
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.attr("dx", "0")
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.attr("dy","0")
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.attr("stdDeviation","0")
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.attr("flood-color",this.animateOption.floodColor)
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}
启动滤镜
```javascript
function start(){
let multiplier = this.animateOption.speed;
let xDiff= 0.01;
let yDiff= 0.01;
let that = this;
function setBlur(x,y){
that.feDropShadow.attr("stdDeviation",x);
}
let flag = true;
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(function updateMotionBlur(){
更多参考 https://xiaozhuanlan.com/topic/8193652740
