[ Launch: blobular droplets!! ] 7d926d694a6423e2af70 by enjalot
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blobular droplets!!
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{"editor_editor":{"coffee":false,"vim":true,"emacs":false,"width":528,"height":680,"hide":false},"description":"blobular droplets!!","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"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}},"fullscreen":false,"play":true,"loop":true,"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/jlSvnd0.gif","ajax-caching":true} |
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//trying to recreate the effect from here: | |
//www.themaninblue.com/experiment/Blobular/ | |
var A = { x: tributary.sw/2, y: tributary.sh/2, r: 249, index: -1 }; | |
var data = [A]; | |
for(var i = 0; i < 10; i++ ) { | |
data.push({ | |
x1: tributary.sw * Math.random(), | |
y1: tributary.sh * Math.random(), | |
x2: tributary.sw * Math.random(), | |
y2: tributary.sh * Math.random(), | |
r: 33, | |
index: i | |
}); | |
} | |
var join = { r: 63 }; | |
//"period", "pingpong" | |
tributary.__config__.set("loop_type", "pingpong") | |
var color = "#00ea00"; | |
var circleColor = "#1470ad"; | |
var strokeWidth = 20; | |
function renderGoo(a,b,add) { | |
var originDistance = a.r - b.r; | |
var distance = calculateDistance(a,b); | |
var distanceDiff = distance - originDistance; | |
if(distanceDiff < 1) { distanceDiff = 1 } | |
var angle = calculateAngle(a,b); | |
b.h = 0; | |
b.k = 0 - a.r + b.r - distanceDiff; | |
var triangleA = a.r + join.r; // Side a | |
var triangleB = b.r + join.r; // Side b | |
var triangleC = Math.abs(b.k); // Side c | |
var triangleP = (triangleA + triangleB + triangleC) / 2; // Triangle half perimeter | |
var triangleArea = Math.sqrt(triangleP * (triangleP - triangleA) * (triangleP - triangleB) * (triangleP - triangleC)); // Triangle area | |
if (triangleC >= triangleA) | |
{ | |
var triangleH = 2 * triangleArea / triangleC; // Triangle height | |
var triangleD = Math.sqrt(Math.pow(triangleA, 2) - Math.pow(triangleH, 2)); // Big circle bisection of triangleC | |
} | |
else | |
{ | |
var triangleH = 2 * triangleArea / triangleA; // Triangle height | |
var triangleD = Math.sqrt(Math.pow(triangleC, 2) - Math.pow(triangleH, 2)); // Small circle bisection of triangleA | |
} | |
a.tan = triangleH / triangleD; | |
a.angle = Math.atan(a.tan); | |
a.sin = Math.sin(a.angle); | |
a.intersectX = a.sin * a.r; | |
a.cos = Math.cos(a.angle); | |
a.intersectY = a.cos * a.r; | |
join.x = 0 + a.sin * (a.r + join.r); | |
join.y = 0 - a.cos * (a.r + join.r); | |
var coord1 = { x: -a.intersectX, y: -a.intersectY }; | |
var coord2 = { x: a.intersectX, y: -a.intersectY } | |
b.tan = (b.k - join.y) / (b.h - join.x); | |
b.angle = Math.atan(b.tan); | |
b.intersectX = join.x - Math.cos(b.angle) * (join.r); | |
b.intersectY = join.y - Math.sin(b.angle) * (join.r); | |
var lavaPathD = "M " + coord1.x + " " + coord1.y + " A " + a.r + " " + a.r + " 0 1 0 " + coord2.x + " " + coord2.y; | |
if (join.x - join.r <= 0 && b.k < join.y) | |
{ | |
var crossOverY = circleYFromX(join, 0); | |
lavaPathD += "A " + join.r + " " + join.r + " 0 0 1 0 " + (join.y + crossOverY); | |
lavaPathD += "m 0 -" + (crossOverY * 2); | |
} | |
lavaPathD += "A " + join.r + " " + join.r + " 0 0 1 " + b.intersectX + " " + b.intersectY; | |
var largeArcFlag = 1; | |
if (join.y < b.k) | |
{ | |
largeArcFlag = 0; | |
} | |
lavaPathD += "a " + b.r + " " + b.r + " 0 " + largeArcFlag + " 0 " + (b.intersectX * -2) + " 0"; | |
if (join.x - join.r <= 0 && b.k < join.y) | |
{ | |
lavaPathD += "A " + join.r + " " + join.r + " 0 0 1 0 " + (join.y - crossOverY); | |
lavaPathD += "m 0 " + (crossOverY * 2); | |
} | |
lavaPathD += "A " + join.r + " " + join.r + " 0 0 1 " + coord1.x + " " + coord1.y; | |
lavaPathD += "A " + join.r + " " + join.r + " 0 0 1 " + coord1.x + " " + coord1.y; | |
if(add) { | |
var lavaPath = svg.append("path") | |
.classed("lava", true) | |
.datum(b) | |
.attr("transform", function(d) { | |
var translate = "translate(" + [a.x, a.y] + ")"; | |
var rotate = "rotate(" + [angle, 0, 0] + ")"; | |
return translate + rotate; | |
}) | |
.style("fill", color) | |
.style("stroke", color) | |
.style("stroke-linecap", "round") | |
.style("stroke-width", strokeWidth) | |
.style("display", function(d) { if(d === a) return "none" }) | |
lavaPath.attr("d", lavaPathD) | |
} else { | |
var lava = svg.selectAll("path.lava") | |
.data(data, function(d) {return d.index === b.index }) | |
.attr("transform", function(d) { | |
var translate = "translate(" + [a.x, a.y] + ")"; | |
var rotate = "rotate(" + [angle, 0, 0] + ")"; | |
return translate + rotate; | |
}) | |
if(lavaPathD.indexOf("NaN") < 0) | |
lava.attr("d", lavaPathD); | |
} | |
} | |
var svg = d3.select("svg"); | |
for(var i = 0; i < data.length; i++) { | |
renderGoo(A, data[i], true); | |
} | |
var drag = d3.behavior.drag() | |
.on("drag", function(d) { | |
var evt = d3.event; | |
d.x += evt.dx; | |
d.y += evt.dy; | |
d3.select(this) | |
.attr("cx", function(d) { return d.x }) | |
.attr("cy", function(d) {return d.y }) | |
for(var i = 1; i < data.length; i++) { | |
renderGoo(A, data[i]); | |
} | |
}) | |
svg.selectAll("circle.blob") | |
.data(data) | |
.enter() | |
.append("circle") | |
.classed("blob", true) | |
.call(drag) | |
.attr("cx", function(d) { return d.x }) | |
.attr("cy", function(d) {return d.y }) | |
.attr("r", function(d) { return d.r }) | |
.style("fill", function(d,i) { return circleColor; }) | |
//.style("stroke", color) | |
//.style("stroke-width", strokeWidth) | |
tributary.run = function(g,t) { | |
//console.log(t); | |
for(var i = 1; i < data.length; i++) { | |
b = data[i]; | |
b.x = d3.interpolate(b.x1, b.x2)(t) | |
b.y = d3.interpolate(b.y1, b.y2)(t) | |
renderGoo(A, b); | |
d3.selectAll("circle.blob") | |
.attr("cx", function(d) { return d.x }) | |
.attr("cy", function(d) {return d.y }) | |
} | |
} | |
function calculateDistance(origin, point) { | |
var xx = point.x - origin.x; | |
var yy = point.y - origin.y; | |
return Math.sqrt(xx*xx + yy*yy) | |
} | |
function calculateAngle(origin, point) | |
{ | |
var tan = (point.y - origin.y) / (point.x - origin.x); | |
var angle = Math.atan(tan) / Math.PI * 180 + 90; | |
if (point.x < origin.x) | |
{ | |
angle += 180; | |
} | |
return angle; | |
} | |
function circleYFromX (circle, x) | |
{ | |
return Math.sqrt(Math.pow(circle.r, 2) - Math.pow(x - circle.x, 2)); | |
}; |
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#display { | |
background-color: #0074bc; | |
} |
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