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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
<html> | |
<head> | |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
</head> | |
<body style="background: #000;"> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="script.js"></script> | |
</body> | |
</html> |
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var margin = {top:0, right:0, bottom:0, left:0,body:0}, | |
width = window.innerWidth - margin.left - margin.right - margin.body * 2, | |
height = window.innerHeight - margin.top - margin.bottom * 2 - margin.body * 2; | |
var color = d3.scale.ordinal().range(["#333","#666", "#555", "#444", "#222", "#777"]); | |
// Переменные для удава | |
var n = 6; | |
var m = 20, // number of samples per layer | |
stack = d3.layout.stack(), | |
data = d3.range(n).map(function() { return bumpLayer(m); }); | |
var layers0 = stack(data); | |
d3.select("body") | |
.style("margin", margin.body + "px"); | |
var x = d3.scale.linear() | |
.domain([0, m - 1]) | |
.range([0, width]); | |
var maxHeight = d3.max(layers0, function(layer) { | |
return d3.max(layer, function(d) { | |
return d.y0 + d.y; | |
}) | |
}); | |
var y = d3.scale.linear() | |
.domain([0, maxHeight]) | |
.range([height, height * 0.3]); | |
var area = d3.svg.area() | |
.interpolate('basis') | |
.x(function(d) { return x(d.x); }) | |
.y0(function(d) { return y(d.y0); }) | |
.y1(function(d) { return y(d.y0 + d.y); }); | |
// рисуем удава | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.style("padding", margin.top+'px '+margin.right+'px '+margin.bottom+'px '+margin.left+'px'); | |
svg.selectAll("path") | |
.data(layers0) | |
.enter().append("path") | |
.attr("d", area) | |
.style("fill", function() { | |
return color(Math.random()); | |
}); | |
change_layers(); | |
setInterval('change_layers()',2000); | |
//---------------------------FUNCTIONS------------------------- | |
function change_layers(){ | |
// Создать новые данные | |
data = data.map(function(layer) { | |
layer = layer.map(function(d) {return d.y}); | |
layer.reverse(); | |
layer.push(Math.random() * d3.max(layer)); | |
bump(layer, m+1); | |
layer.reverse(); | |
layer.pop(); | |
layer = layer.map(function(d, i) { return {x: i, y: Math.max(0, d)}; }); | |
return layer; | |
}); | |
var layers0 = stack(data); | |
// Уточнить функцию для подгонки высоты | |
y.domain([0, d3.max(layers0, function(layer) { | |
return d3.max(layer, function(d) { | |
return d.y0 + d.y; | |
}); | |
})]); | |
//Подогнать высоту | |
var area = d3.svg.area() | |
.interpolate('basis') | |
.x(function(d) { return x(d.x); }) | |
.y0(function(d) { return y(d.y0); }) | |
.y1(function(d) { return y(d.y0 + d.y); }); | |
// Обновить данные | |
svg.selectAll("path") | |
.data(layers0) | |
.transition('updatePath') | |
.ease('linear') | |
.duration(2000) | |
.attr("d", area); | |
} | |
function bump(a, m) { | |
var x = 1 / (.1 + Math.random()), | |
y = 2 * Math.random() - .5, | |
z = 10 / (.1 + Math.random()); | |
for (var i = 0; i < m; i++) { | |
var w = (i / m - y) * z; | |
a[i] += x * Math.exp(-w * w); | |
} | |
} | |
// Генератор данных от Майка Бостока | |
function bumpLayer(m) { | |
var a = [], i; | |
for (i = 0; i < m; ++i) a[i] = 0; | |
for (i = 0; i < 5; ++i) bump(a, m); | |
return a.map(function(d, i) { return {x: i, y: Math.max(0, d)}; }); | |
} |
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