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Created October 13, 2013 21:19
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Water Magnified
Raw
_.md
Raw
config.json
{"description":"Water Magnified","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"style.css":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"test.css":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"pingpong","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"thumbnail":"http://i.imgur.com/8zudqSl.png","inline-console":true}
Raw
inlet.js
// http://www.feynmanlectures.info/
// Figure 1-1
var w = 400,
h = 300;
var svg = d3.select('svg');
var molecules = d3.range(140).map(
function() {
return { oradius: 30, hradius: 30 * 25 / 60 };
}
);
var root = molecules[0];
root.oradius = root.hradius = 0;
root.fixed = true;
var force = d3.layout.force()
.gravity(0.02)
.charge(-20)
.nodes(molecules)
.size([w, h]);
force.start();
var molecule = svg.selectAll('.molecule')
.data(molecules.slice(1))
.enter().append('g').classed('molecule', true);
molecule
.append('circle').classed('oxygen', true)
.attr({
r: function(d) { return d.oradius; },
cx: function(d) { return d.x; },
cy: function(d) { return d.y; }
});
molecule
.append('circle').classed('hydrogen', true)
.attr({
r: function(d) { return d.hradius; },
cx: function(d) { return d.x - (d.oradius+d.hradius) * Math.cos(deg2rad(30)); },
cy: function(d) { return d.y + (d.oradius+d.hradius) * Math.sin(deg2rad(30)); }
});
molecule
.append('circle').classed('hydrogen', true)
.attr({
r: function(d) { return d.hradius; },
cx: function(d) { return d.x + (d.oradius+d.hradius) * Math.cos(deg2rad(30)); },
cy: function(d) { return d.y + (d.oradius+d.hradius) * Math.sin(deg2rad(30)); }
});
force.on("tick", function(e) {
var q = d3.geom.quadtree(molecules),
i = 0,
n = molecules.length;
while (++i < n) q.visit(collide(molecules[i]));
/*svg.selectAll("circle")
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });*/
svg.selectAll('g')
.attr('transform', function(d) {
return 'translate(' + d.x + ',' + d.y + ') rotate(' + Math.random()*360 + ')';
});
});
function collide(node) {
var r = node.radius + 16,
nx1 = node.x - r,
nx2 = node.x + r,
ny1 = node.y - r,
ny2 = node.y + r;
return function(quad, x1, y1, x2, y2) {
if (quad.point && (quad.point !== node)) {
var x = node.x - quad.point.x,
y = node.y - quad.point.y,
l = Math.sqrt(x * x + y * y),
r = node.radius + quad.point.radius;
if (l < r) {
l = (l - r) / l * 0.5;
node.x -= x *= l;
node.y -= y *= l;
quad.point.x += x;
quad.point.y += y;
}
}
return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1;
};
}
setInterval(force.tick, 1000);
function deg2rad(deg) {
return deg / 180 * Math.PI;
}
function generate(n) {
var molecules = [];
var or = 25;
for (var i = 0; i < n; i++) {
molecules.push({
or: or,
hr: or * 25/60
});
}
return molecules;
}
Raw
style.css
svg {
margin-left: 20px;
margin-top: 20px;
border: 1px solid gray;
background-color: #FFFFFF;
width: 400px;
height: 300px;
}
.background {
fill: none;
pointer-events: all;
}
text {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 12px;
}
circle.oxygen {
fill: powderblue;
stroke: steelblue;
stroke-width: 1px;
}
circle.hydrogen {
fill: lightcoral;
stroke: crimson;
stroke-width: 1px;
}
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