preziotte/index.html

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
    background-color: #2A363B;
}

button {
  position: fixed;
  z-index: 40;
}

.grid {
  position: fixed;
  z-index: 30;
  width: 100%;
  height: 100%;
}
.cell {
/*  width: 14.28%;
  height: 14.28%;
*/
  width: 10%;
  height: 10%;
 display: inline-block;
}

.cell:hover {
  background-color: #4D586C;
  opacity: 0.3;
}

svg {
  position: absolute;
  height: 100%;
  width: 100%;
}

svg path {
  opacity: 1;
  fill: #E84A5F;
  stroke: #EEE6AB;
  stroke-width: 1px;
  stroke-linecap: rounded;
}

.frame {
  fill: none;
  stroke: #000;
}

.axis text {
  font: 10px sans-serif;
  fill: white;
}

.axis line,
.axis circle {
  fill: none;
  stroke: #EEE6AB;
  stroke-dasharray: 1,4;
}

.axis {
  opacity: 0;
  -webkit-transition: opacity .5s linear;
     -moz-transition: opacity .5s linear;
       -o-transition: opacity .5s linear;
          transition: opacity .5s linear;

}
svg:hover .axis {
	opacity: 0;
}

.axis :last-of-type circle {
  stroke: #EEE6AB;
  stroke-dasharray: none;
}

.line {
  fill: none;
  stroke: #E84A5F;
  stroke-width: 1.5px;
  stroke-dasharray: 40 10 90 10;
  stroke-dasharray: 10 40 10 90;
  stroke-dasharray: 0;
  stroke-dashoffset: 0;
  -webkit-animation: dash 1s ease infinite;
     -moz-animation: dash 1s ease infinite;
          animation: dash 1s ease infinite;
}

@keyframes dash {
  100% {
    stroke-dashoffset: 150;
  }
}

@-webkit-keyframes dash {
  100% {
    stroke-dashoffset: 150;
  }
}

@keyframes throb {
  0% {
    transform: scale(.1);
  }
  50% {
    transform: scale(1);
  }
  100% {
    transform: scale(.1);
  }
}

@-webkit-keyframes throb {
  0% {
    transform: scale(.1);
  }
  50% {
    transform: scale(1);
  }
  100% {
    transform: scale(.1);
  }
}

</style>
<body>

<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

<script>

// http://www.colourlovers.com/palette/1098589/coup_de_gr%C3%A2ce
// http://bl.ocks.org/mbostock/4583749
// http://www.mathamazement.com/Lessons/Pre-Calculus/06_Additional-Topics-in-Trigonometry/graphs-of-polar-equations.html
// http://mathworld.wolfram.com/topics/PolarCurves.html

var data3 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
  var r = Math.cos((4/7)*t);
  return [t, r*1];
});

var n = 1;
var d = 7;

var generate = function () {
  var n = Math.floor(Math.random() * 10) + 1
  var d = Math.floor(Math.random() * 10) + 1
  var data4 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
    var k = n/d;
    var r = Math.cos(k*t);
    return [t, r*1];
  });

  d3.selectAll(".line")
      .datum(data4)
    .transition()
      .duration(500)
      .attr("d", line);
};


var width = window.innerWidth,
    height = window.innerHeight-20,
    radius = Math.min(width, height) / 2 - 30;

var r = d3.scale.linear()
    .domain([0, 1])
    .range([0, radius]);

var line = d3.svg.line.radial()
    .radius(function(d) { return r(d[1]); })
    .angle(function(d) { return -d[0] + Math.PI / 2; });

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

var gr = svg.append("g")
    .attr("class", "r axis")
  .selectAll("g")
    .data(r.ticks(5).slice(1))
  .enter().append("g");

gr.append("circle")
    .attr("r", r);

var ga = svg.append("g")
    .attr("class", "a axis")
  .selectAll("g")
    .data(d3.range(0, 360, 30))
  .enter().append("g")
    .attr("transform", function(d) { return "rotate(" + -d + ")"; });

ga.append("line")
    .attr("x2", radius);


svg.append("path")
    .datum(data3)
    .attr("class", "line")
    .attr("d", line);

var grid = d3.select('body').append('div').attr('class', 'grid');

for (var i = 1; i < 11; i++) {

  for (var j = 1; j < 11; j++) {

    grid.append("div")
        .attr("class", 'cell')
        .attr("data-n", j)
        .attr("data-d", i);

  }
}


$('.cell').on('click touchend', function() {
    var n = $(this).attr('data-n');
    var d = $(this).attr('data-d');
    console.log(n+'/'+d);
    var data4 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
    var k = n/d;
    var r = Math.cos(k*t);
    return [t, r*1];
  });

  d3.selectAll(".line")
      .datum(data4)
    .transition()
      .duration(2500)
      .attr("d", line);

});

</script>

<body>
  <button onclick="generate()">Randomize</button>  r=cos(kθ)

  </div>
</body>

</html>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	body {
	background-color: #2A363B;
	}

	button {
	position: fixed;
	z-index: 40;
	}

	.grid {
	position: fixed;
	z-index: 30;
	width: 100%;
	height: 100%;
	}
	.cell {
	/* width: 14.28%;
	height: 14.28%;
	*/
	width: 10%;
	height: 10%;
	display: inline-block;
	}

	.cell:hover {
	background-color: #4D586C;
	opacity: 0.3;
	}

	svg {
	position: absolute;
	height: 100%;
	width: 100%;
	}

	svg path {
	opacity: 1;
	fill: #E84A5F;
	stroke: #EEE6AB;
	stroke-width: 1px;
	stroke-linecap: rounded;
	}

	.frame {
	fill: none;
	stroke: #000;
	}

	.axis text {
	font: 10px sans-serif;
	fill: white;
	}

	.axis line,
	.axis circle {
	fill: none;
	stroke: #EEE6AB;
	stroke-dasharray: 1,4;
	}

	.axis {
	opacity: 0;
	-webkit-transition: opacity .5s linear;
	-moz-transition: opacity .5s linear;
	-o-transition: opacity .5s linear;
	transition: opacity .5s linear;

	}
	svg:hover .axis {
	opacity: 0;
	}

	.axis :last-of-type circle {
	stroke: #EEE6AB;
	stroke-dasharray: none;
	}

	.line {
	fill: none;
	stroke: #E84A5F;
	stroke-width: 1.5px;
	stroke-dasharray: 40 10 90 10;
	stroke-dasharray: 10 40 10 90;
	stroke-dasharray: 0;
	stroke-dashoffset: 0;
	-webkit-animation: dash 1s ease infinite;
	-moz-animation: dash 1s ease infinite;
	animation: dash 1s ease infinite;
	}

	@keyframes dash {
	100% {
	stroke-dashoffset: 150;
	}
	}

	@-webkit-keyframes dash {
	100% {
	stroke-dashoffset: 150;
	}
	}

	@keyframes throb {
	0% {
	transform: scale(.1);
	}
	50% {
	transform: scale(1);
	}
	100% {
	transform: scale(.1);
	}
	}

	@-webkit-keyframes throb {
	0% {
	transform: scale(.1);
	}
	50% {
	transform: scale(1);
	}
	100% {
	transform: scale(.1);
	}
	}

	</style>
	<body>

	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

	<script>

	// http://www.colourlovers.com/palette/1098589/coup_de_gr%C3%A2ce
	// http://bl.ocks.org/mbostock/4583749
	// http://www.mathamazement.com/Lessons/Pre-Calculus/06_Additional-Topics-in-Trigonometry/graphs-of-polar-equations.html
	// http://mathworld.wolfram.com/topics/PolarCurves.html

	var data3 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
	var r = Math.cos((4/7)*t);
	return [t, r*1];
	});

	var n = 1;
	var d = 7;

	var generate = function () {
	var n = Math.floor(Math.random() * 10) + 1
	var d = Math.floor(Math.random() * 10) + 1
	var data4 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
	var k = n/d;
	var r = Math.cos(k*t);
	return [t, r*1];
	});

	d3.selectAll(".line")
	.datum(data4)
	.transition()
	.duration(500)
	.attr("d", line);
	};


	var width = window.innerWidth,
	height = window.innerHeight-20,
	radius = Math.min(width, height) / 2 - 30;

	var r = d3.scale.linear()
	.domain([0, 1])
	.range([0, radius]);

	var line = d3.svg.line.radial()
	.radius(function(d) { return r(d[1]); })
	.angle(function(d) { return -d[0] + Math.PI / 2; });

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
	.append("g")
	.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

	var gr = svg.append("g")
	.attr("class", "r axis")
	.selectAll("g")
	.data(r.ticks(5).slice(1))
	.enter().append("g");

	gr.append("circle")
	.attr("r", r);

	var ga = svg.append("g")
	.attr("class", "a axis")
	.selectAll("g")
	.data(d3.range(0, 360, 30))
	.enter().append("g")
	.attr("transform", function(d) { return "rotate(" + -d + ")"; });

	ga.append("line")
	.attr("x2", radius);


	svg.append("path")
	.datum(data3)
	.attr("class", "line")
	.attr("d", line);

	var grid = d3.select('body').append('div').attr('class', 'grid');

	for (var i = 1; i < 11; i++) {

	for (var j = 1; j < 11; j++) {

	grid.append("div")
	.attr("class", 'cell')
	.attr("data-n", j)
	.attr("data-d", i);

	}
	}


	$('.cell').on('click touchend', function() {
	var n = $(this).attr('data-n');
	var d = $(this).attr('data-d');
	console.log(n+'/'+d);
	var data4 = d3.range(0, 20 * Math.PI, .01).map(function(t) {
	var k = n/d;
	var r = Math.cos(k*t);
	return [t, r*1];
	});

	d3.selectAll(".line")
	.datum(data4)
	.transition()
	.duration(2500)
	.attr("d", line);

	});

	</script>

	<body>
	<button onclick="generate()">Randomize</button> r=cos(kθ)

	</div>
	</body>

	</html>