[ Launch: Ball on Line - Answer ] 5630094 by lewis500
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Ball on Line - Answer
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{"editor_editor":{"coffee":false,"vim":false,"emacs":false,"width":652,"height":647,"hide":false},"endpoint":"","description":"Ball on Line - Answer","display":"svg","public":true,"require":[],"fileconfigs":{"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"inlet.svg":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01} |
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var data = [ | |
{x: 0, y:0}, | |
{x: 62, y:66}, | |
{x: 259, y:115}, | |
{x: 339, y:10}, | |
{x: 400, y:30} | |
] | |
var line = d3.svg.line() | |
.x(function(d) { | |
return d.x; | |
}) | |
.y(function(d) { | |
return d.y; | |
}); | |
var svg = d3.select("svg"); | |
var group = svg.append("g") | |
.attr({ | |
transform: "translate(" + [60, 150] + ")" | |
}) | |
var path = group.append("path") | |
.attr({ | |
d: line(data), | |
fill: "none", | |
stroke: "#000" | |
}) | |
var len = path.node().getTotalLength(); | |
var offset = 0; | |
var circle = group.append("circle") | |
.attr({ | |
r: 10, | |
transform: function() { | |
var p = path.node().getPointAtLength(len - offset) | |
return "translate(" + [p.x, p.y] + ")"; | |
} | |
}) | |
svg.on("click", function() { | |
var dur = 2000; | |
circle.transition() | |
.duration(dur) | |
.ease("bounce") | |
.attrTween("transform", function(d,i) { | |
return function(t) { | |
var p = path.node().getPointAtLength(len * t) | |
return "translate(" + [p.x, p.y] + ")"; | |
} | |
}) | |
}) | |
//more info on this | |
//http://bl.ocks.org/1313857 | |
//http://www.carto.net/svg/samples/animated_bustrack.shtml | |
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