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@shimizu

shimizu/README.md

Last active Jan 28, 2019
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SVG filter effects

SVGエフェクトテスト

<!DOCTYPE html>
<html lang="jp">
<head>
<script src="//unpkg.com/d3@5.0.0/dist/d3.min.js"></script>
<style>
html,body, svg{
width: 100%;
height: 100%;
background-image:url("p0129_l.jpeg")
}
</style>
</head>
<body>
<svg>
<defs>
<filter id="filter">
<!-- COLOR -->
<feFlood flood-color="#000000" flood-opacity="1" result="COLOR-blue" />
<!-- COLOR END -->
<!-- Texture -->
<feTurbulence baseFrequency=".025" type="fractalNoise" numOctaves="3" seed="0" result="Texture" />
<!-- Texture -->
<!-- FILL -->
<feOffset dx="-3" dy="4" in="SourceAlpha" result="step1"/>
<feDisplacementMap scale="17" in="step1" in2="Texture" result="step2" />
<feComposite operator="in" in="Texture" in2 = "step2" result="step3"/>
<feComposite operator="in" in="COLOR-blue" in2="step3" result="fill-filter" />
<!-- FILL END-->
<feMerge result="merge2">
<feMergeNode in="fill-filter" />
</feMerge>
</filter>
</defs>
</svg>
<script>
let width = d3.select("svg").node().clientWidth;
let height = d3.select("svg").node().clientHeight;
width = (width < 980) ? 980 : width;
height = (height < 980) ? 980 : height;
const cityLayer = d3.select("svg").append("g").attr("class", "cityLayer");
const prefLayer = d3.select("svg").append("g").attr("class", "prefLayer");
const selectYear = 2016;
const stepYear = 5
const projection = d3.geoMercator()
const geoPath = d3.geoPath();
const p1 = d3.json("pref-s.geojson")
Promise.all([p1]).then(data => {
const prefData = data[0];
projection.fitExtent([[0, 0], [980, 980]], prefData);
geoPath.projection(projection);
prefLayer.selectAll(".pref")
.data(prefData.features)
.enter()
.append("path")
.attr("class", "pref")
.attr("d", geoPath)
.attr("stroke", "red")
.attr("stroke-width", 1)
.attr("fill", "black")
.attr("filter", "url(#filter)")
.attr("opacity", 0.65)
})
</script>
</body>
</html>
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