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@erlenstar

erlenstar/.block

Created October 19, 2016 23:23
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dotted background intro
Raw
.block
license: mit
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
body {
background: #0d1215;
}
</style>
</head>
<body>
<script>
let height = 500
let width = 960
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
// background dots
let dotStep = 20
, rows = height / dotStep
, cols = width / dotStep
d3.range(rows).map(function(d, i) {
d3.range(cols).map(function(e, j) {
svg.append("rect").classed("pip", true)
.attr("height", 2)
.attr("width", 2)
.attr("fill", "#807c7b")
.attr("x", width / 2)
.attr("y", height / 2)
.transition().duration(750)
.attr("y", () => dotStep * d + dotStep)
.transition().duration(750 + (j / cols) * 500).ease(d3.easeCubicOut)
.attr("x", () => dotStep * j + dotStep)
})
})
// widget
let wHeight = dotStep * 8
, wWidth = dotStep * 18
svg.append("rect").classed("widget", true)
.attr("fill", "#0d1215")
.attr("height", 0)
.attr("width", wWidth)
.attr("x", (width / 2) - (wWidth / 2))
.attr("y", (height / 2) - (wHeight / 2))
.transition().duration(750).delay(2000)
.attr("height", wHeight)
</script>
</body>
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