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sxywu/.block

Last active July 28, 2016 20:29
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DS July: Code 2
Raw
.block
license: gpl-3.0
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.13.1/lodash.js'></script>
<style>
svg {
width: 900px;
height: 900px;
}
</style>
</head>
<body>
<svg>
</svg>
<script>
var padding = 20;
var svg = d3.select('svg')
.append('g')
.attr('transform', 'translate(' + [padding, padding] + ')');
var flowerSize = 300;
var numPetals = 6;
var petalPaths = [[
'M0,0',
"C50,50 50,100 0,100",
"C-50,100 -50,50 0,0"
],
[
'M-35,0',
'C-25,25 25,25 35,0',
'C50,25 25,75 0,100',
'C-25,75 -50,25 -35,0'
],
[
'M0,0',
'C50,40 50,70 20,100',
'L0,85',
'L-20,100',
'C-50,70 -50,40 0,0'
],
[
'M0,0',
'C50,25 50,75 0,100',
'C-50,75 -50,25 0,0'
]];
var flowers = svg.selectAll('g.flower')
.data(petalPaths).enter().append('g')
.classed('flower', true)
.attr('transform', function(d, i) {
var x = (i % 2) * flowerSize;
var y = Math.floor(i / 2) * flowerSize;
return 'translate(' + x + ',' + y + ')';
});
flowers.selectAll('path')
.data(function(d) {
// for each flower, draw the petal 6 times
return _.times(numPetals, function(i) {
return {
angle: (360/numPetals) * i,
d: d
}
});
}).enter().append('path')
.attr('stroke', '#000')
.attr('stroke-width', 2)
.attr('fill', 'none')
.attr('d', function(d) {return d.d})
.attr('transform', function(d) {
var cx = flowerSize / 2;
var cy = flowerSize / 2;
return 'translate(' + [cx, cy] +
')rotate(' + [d.angle] + ')';
});
</script>
</body>
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