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@preziotte
Last active August 29, 2015 14:05
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Five Rotating Icosahedrons
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
background-color: #36393B;
}
svg {
position: absolute;
height: 100%;
width: 100%;
}
svg path {
opacity: .3;
fill: none;
stroke: #EEE6AB;
stroke-width: 1px;
stroke-linecap: rounded;
}
</style>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
function Icosahedron(scale,velocityX,velocityY) {
// http://bl.ocks.org/mbostock/7782500
this.velocityX = velocityX;
this.velocityY = velocityY;
this.width = window.innerWidth;
this.height = window.innerHeight;
this.t0 = Date.now();
console.log(this.width);
var projection = d3.geo.orthographic()
.scale(this.height/scale)
.translate([this.width/2, this.height/2])
.center([0, 0]);
this.projection = projection;
this.svg = d3.select("body").append("svg")
.attr("class", "isoco1")
.attr("width", this.width)
.attr("height", this.height);
this.face = this.svg.selectAll("path")
.data(icosahedronFaces)
.enter()
.append("path").attr("class", "isoco")
.each(function(d) { d.polygon = d3.geom.polygon(d.map(projection)); });
function icosahedronFaces(slide) {
var slide = slide || 180;
var faces = [],
y = Math.atan2(1, 2) * slide / Math.PI;
for (var x = 0; x < 360; x += 72) {
faces.push(
[[x + 0, -90], [x + 0, -y], [x + 72, -y]],
[[x + 36, y], [x + 72, -y], [x + 0, -y]],
[[x + 36, y], [x + 0, -y], [x - 36, y]],
[[x + 36, y], [x - 36, y], [x - 36, 90]]
);
}
return faces;
};
};
Icosahedron.prototype.redraw = function() {
var time = Date.now() - this.t0;
var projection = this.projection;
this.projection.rotate([time * this.velocityX, time * this.velocityY]);
this.face
.each(function(d) { d.forEach(function(p, i) { d.polygon[i] = projection(p); }); })
.style("display", function(d) { return d.polygon.area() > 0 ? null : "none"; })
.attr("d", function(d) { return "M" + d.polygon.join("L") + "Z"; })
};
function init() {
d3.selectAll("svg").remove();
var i1 = new Icosahedron(3,.014,.01);
var i2 = new Icosahedron(3.5,.02,-.02);
var i3 = new Icosahedron(4,-.01,.014);
var i4 = new Icosahedron(4.5,.01,.012);
var i5 = new Icosahedron(5,-.01,-.011);
d3.timer(function() {
i1.redraw();
i2.redraw();
i3.redraw();
i4.redraw();
i5.redraw();
});
};
window.onresize = function(event) { init(); };
</script>
<body onload='init();'></body>
</html>
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