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test_spiral.html
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test_spiral.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>dragit example with a spiral</title>
<link href="../src/dragit.css" rel="stylesheet"/>
<script src="../lib/d3.v3.js"></script>
<script src="../src/dragit.js"></script>
<style>
path.spiral {
fill: none;
stroke: #ee8d18;
stroke-width: 3px;
}
</style>
</head>
<body>
<div id="viz"></div>
<p style="clear:both"></p>
<div id="slider"></div>
<label><input type="checkbox" name="mode" value="trajectory" onclick="dragit.trajectory.toggleAll('selected');" checked> Show complete trajectory</label>
<script>
// Credits for original spiral code: http://bl.ocks.org/syntagmatic/3543186
var margin = {top: 20, right: 20, bottom: 20, left: 20},
width = 900 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var svg = d3.select("#viz")
.append("svg")
.attr({width: width, height: height})
var num_axes = 8,
start = 0,
end = 10;
var theta = function(r) {
return -2*Math.PI*r;
};
var arc = d3.svg.arc()
.startAngle(0)
.endAngle(2*Math.PI);
var radius = d3.scale.linear()
.domain([start, end])
.range([0, d3.min([width,height])/2-20]);
var angle = d3.scale.linear()
.domain([0,num_axes])
.range([0, 360])
var pieces = d3.range(start, end+0.001, (end-start)/1000);
var spiral = d3.svg.line.radial()
.interpolate("cardinal")
.angle(theta)
.radius(radius);
var path_spiral = svg.selectAll(".spiral")
.data([pieces])
.enter().append("path")
.attr("class", "spiral")
.attr("d", spiral)
.attr("transform", function(d) { return "translate("+width/2+", "+height/2+")rotate(" + 90 + ")" });
var time_steps = 200, nb_points = 1, current_time = 0;
var config = {
time: {min: 0, max: 20, step: 1, current: 0}
}
var total_length = path_spiral.node().getTotalLength();
var share_length = total_length / time_steps;
// Partition of the SVG shape into equal distances to create a time cube
var timecube = d3.range(nb_points).map(function(d, i) {
return d3.range(time_steps).map(function(e, j) {
var current_point = path_spiral.node(0).getPointAtLength(share_length*j);
return {x: current_point.x+width/2, y: current_point.y+height/2, t: j};
});
})
var gPoints = svg.selectAll(".points")
.data(timecube)
.enter()
.append("g")
.on("mouseenter", function(d, i) {
dragit.utils.animateTrajectory(dragit.trajectory.display(d, i), 0, 1000)
})
.on("mouseleave", dragit.trajectory.remove)
.call(dragit.object.activate)
.attr("transform", function(d) {
return "translate("+d[current_time].x+", "+d[current_time].y+")";
});
gPoints.append("circle")
.attr("class", "points")
.attr({r:10, fill:"red"})
function update(v, t) {
var previous_current = dragit.time.current;
dragit.time.current = v || dragit.time.current;
dragit.statemachine.current_id = 0;
gPoints.transition()
.duration(200)
.attr("transform", function(d) {
return "translate("+d[dragit.time.current].x+", "+d[dragit.time.current].y+")";
})
//if(dragit.time.current != dragit.time.previous) {
// gPoints.transition()
// .duration(1000)
// .attrTween("transform", dragit.utils.getSubPath(previous_current, dragit.time.current))
//}
}
function init() {
dragit.init("svg");
dragit.data = timecube.map(function(d, i) {
return d.map(function(e, i) {
return [e.x, e.y];
})
});
dragit.time = {min:0, max:time_steps, step:1, current: current_time}
dragit.evt.register("update", update);
dragit.trajectory.toggleAll('selected');
dragit.utils.slider("#slider", true)
}
init();
</script>
</body>
</html>