/
branch.html
529 lines (465 loc) · 19.4 KB
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branch.html
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<!DOCTYPE html>
<html>
<head>
<title>Thank you!</title>
<meta charset="utf-8">
<link href="bootstrap-3.1.1-dist/css/bootstrap.css" rel="stylesheet">
</head>
<style type="text/css">
#content {
padding-left: 50px;
padding-top: 100px;
}
#svgArea {
display: block;
}
div.tooltip {
position: absolute;
text-align: center;
padding: 10px;
color: #fff;
font: 12px sans-serif;
font-weight: bold;
background: rgba(0, 0, 0, 0.9);;
border: 2px;
border-radius: 5px;
pointer-events: none;
}
</style>
<body>
<div class="row">
<div class="col-md-4" id="content">
<h1>Thank you for the help!</h1>
<p>Save the Children has been working to fight hunger, prevent malnutrition and improve the lives of boys and girls in Africa since 1963. Whether we are working with orphaned children in sub-Saharan Africa or emergency relief for refugees in North Africa, Save the Children strives to meet the needs to vulnerable children and their families with lifesaving and life-changing programs. Charities can make a difference, with a hand-up, not a handout.</p>
<button class="btn btn-primary" id='donate' type="submit">Donate</button>
<button class="btn btn-success" id='animate' type="submit">Animate</button>
<button class="btn btn-danger" id='atonce' type="submit">At Once</button>
</div>
<div class="col-md-8" id ="svgArea">
<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
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<script src="D3/d3.js"></script>
<script src="bootstrap-3.1.1-dist/js/jquery-1.11.1.js"></script>
<script src="bootstrap-3.1.1-dist/js/bootstrap.min.js"></script>
<script>
var branches = [];
var leaves = [];
var seedWidth = 75;
var maxDepth = 8;
function degToRad(degree) {
return degree*Math.PI/180;
}
function radToDeg(radian) {
return radian*180/Math.PI
}
// transform angle with y axis as a basis. so 0 degree means vertical
function normalizeAngle(rad) {
return degToRad(90)+rad;
}
// transform angle with x axis as basis like normal polar coordinate
function denormalizeAngle(rad) {
return rad - degToRad(90);
}
// Tree creation functions
function branch(b) {
var end = endPt(b), daR, newB, da, dl, aRand, node, id;
branches.push(b);
// start from depth n+1 the length is 0.8*length
if (b.depth >= 0 && b.depth < 1) {
dl = 0.5;
} else {
dl = 0.75;
}
//start from depth n+1 the angle is 20
// if (b.depth >= 3) {
// da = degToRad(25);
// aRand = degToRad(10);
// } else if (b.depth >= 5) {
// da = degToRad(30);
// aRand = degToRad(10);
// } else {
// da = degToRad(20);
// aRand = degToRad(5);
// }
lRand = 0.15;
lRand = Math.random() * (lRand);
if (b.depth < 3) {
da = degToRad(30);
aRand = degToRad(10);
} else if (b.depth < 6) {
da = degToRad(20);
aRand = degToRad(10);
} else {
da = degToRad(20);
aRand = degToRad(5);
}
if (b.depth === maxDepth) {
b.visible = false;
leaves.push(b);
return;
}
// create node array, contains id of branch that has been traversed by the branch
node = [];
node.push(b.i);
node = node.concat(b.node);
// console.log(b.i);
// console.log(b.depth);
// console.log(b.dl);
// console.log('-----')
// Left branch
//daR = ar * Math.random() - ar * 0.5;
daR = Math.random() * (aRand + aRand) - aRand; //random angle between -aRand and aRand
newB = {
i: branches.length,
x: end.x,
y: end.y,
angle: b.angle + da + daR,
length: b.length * (dl + lRand),
depth: b.depth + 1,
parent: b.i,
node: node,
dl: dl,
da: radToDeg(da),
aRand: aRand
};
branch(newB);
// Right branch
//daR = ar * Math.random() - ar * 0.5;
daR = Math.random() * (aRand + aRand) - aRand; //random angle between -aRand and aRand
newB = {
i: branches.length,
x: end.x,
y: end.y,
angle: b.angle - da + daR,
length: b.length * (dl + lRand),
depth: b.depth + 1,
parent: b.i,
node: node,
dl: dl,
da: radToDeg(da),
aRand: aRand
};
branch(newB);
}
function endPt(b) {
// Return endpoint of branch
var x = b.x + b.length * Math.cos( normalizeAngle(b.angle) );
var y = b.y - b.length * Math.sin( normalizeAngle(b.angle) );
return {x: x, y: y};
}
// define svg for placeholder
//var width = document.getElementById("svgArea").offsetWidth;
var width = 800;
var height = 800;
var svg = d3.select("svg")
.attr("width", width)
.attr("height", height)
.attr('viewBox', '0 0 ' + width + ' ' + height);
// Tree configuration
var seed = {i: 0, x: 10, y: 20, angle: 0, length: 1, depth: 0, node: [], dl:0.5}; // a = angle, l = length, d = depth
//svg.style("background-color", "aliceblue");
function x1(d) {return xScale(d.x);}
function y1(d) {return yScale(d.y);}
function x2(d) {return xScale(endPt(d).x);}
function y2(d) {return yScale(endPt(d).y);}
function highlightParents(d) {
var colour = d3.event.type === 'mouseover' ? 'green' : '#470000';
var depth = d.depth;
for(var i = 0; i <= depth; i++) {
d3.select('#id-'+parseInt(d.i)).style('stroke', colour);
d = branches[d.parent];
}
}
function highlightParents2(d) {
console.log(d);
var colour = d3.event.type === 'mouseover' ? 'green' : '#470000';
var depth = d.depth;
for(var i = 0; i <= depth; i++) {
d3.select('#id-'+parseInt(d.i)).style('stroke', colour);
d = branches[d.parent];
}
}
function highlightLeaf(d,i) {
svg.selectAll('use')
.style('fill', 'grey');
svg.select('use#id-'+i)
.style('fill', 'green');
}
branch(seed);
var xMax = Math.max.apply(null, branches.map(function(element){return element.x}));
var xMin = Math.min.apply(null, branches.map(function(element){return element.x}));
var yMax = Math.max.apply(null, branches.map(function(element){return element.y}));
var yMin = Math.min.apply(null, branches.map(function(element){return element.y}));
// an ugly hack to leave room for leave to grow inside the svg container
// so that the leaf is not cut out of the svg
var leafWidth = 0.8;
var xScale = d3.scale.linear()
.domain([xMin-leafWidth, xMax+leafWidth])
.range([0, width]);
var yScale = d3.scale.linear()
.domain([yMin-leafWidth, yMax+leafWidth])
.range([0, height]);
// differentiate branch based on depth of branch
var branchingDepth = 3;
// get all branch width depth=n, using jQuery grep function
var keyBranches = $.grep(branches, function(e){ return e.depth == branchingDepth; });
// scan all item in branches, find which branch belong to which key branches
branches.forEach(function(d){
keyBranches.forEach(function(e){
var hasKey = d.node.indexOf(e.i);
if (hasKey != -1) {
d.keyBranch = e.i;
}
});
});
// if keyBranch == undefined, that means the branch is outside the branching
// gives value of -1 for easier color coding
branches.forEach(function(d){
if (typeof d.keyBranch == 'undefined') {
d.keyBranch = -1;
}
})
var branchesOfBranches = d3.nest()
.key(function(d) { return d.keyBranch;})
.entries(branches);
var color = d3.scale.category20();
svg.selectAll('line')
.data(branches)
.enter()
.append('line')
.attr('x1', x1)
.attr('y1', y1)
.attr('x2', x2)
.attr('y2', y2)
//.attr('stroke-width', 5)
.attr('stroke', function(d){
if (d.keyBranch == -1) {
return 'grey'
} else {
return color(d.keyBranch);
}
})
// .style('stroke-width', function(d) {if (d.depth == 0) { return parseInt(seedWidth) + 'px'}
// else if (d.depth == 1) { return 55 + 'px'; }
// else if (d.depth == 2) { return 37 + 'px'; }
// else if (d.depth == 3) { return 21 + 'px'; }
// else if (d.depth == 4) { return 13 + 'px'; }
// else if (d.depth == 5) { return 9 + 'px'}
// else if (d.depth == 6) { return 6 + 'px'; }
// else if (d.depth == 7 ) { return 4 + 'px'; }
// else if (d.depth == 8 ) { return 3 + 'px'; }
// else if (d.depth == 9 ) { return 2 + 'px'; }
// else { return 1 + 'px'; }})
.style('stroke-width', function(d){
var x2 = xScale(endPt(d).x);
var y2 = yScale(endPt(d).y);
var x1 = xScale(d.x);
var y1 = yScale(d.y);
var length = Math.pow(Math.pow((x2-x1),2)+Math.pow((y2-y1),2),0.5);
var width = treeWidth(length,d.depth);
return width < 1 ? parseInt(1) + 'px' : parseInt(width) + 'px';
//return parseInt(treeWidth(length)) + 'px';
})
.style('stroke-linecap', 'round')
.attr('id', function(d) {return 'id-'+d.i;})
//.on('mouseover', highlightParents2)
//.on('mouseout', highlightParents);
leafScale(1);
var tooltip = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
svg.selectAll('use')
.data(leaves)
.enter()
.append('use')
.attr('x', x2)
.attr('y', y2)
.attr('id', function(d,i){return 'id-' + i})
.attr('transform', function(d){ return 'rotate(' + radToDeg(-d.angle) + ' ' + xScale(endPt(d).x) + ' ' + yScale(endPt(d).y) + ')';})
.attr("xlink:href", "#layer1")
.style('fill', function(d){
return color(d.keyBranch);
})
.style('stroke', 'black')
.attr('visibility', function(d){
return d.visible ? 'visible' : 'hidden'
})
//.on('mouseover', highlightLeaf)
//.on('mouseout', function(d){svg.selectAll('use').style('fill', 'green')});
.on("mouseover", function(d) {
tooltip.transition().duration(200).style("opacity", 1);
tooltip.html("<strong>Depth: </strong>" + d.depth)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 28) + "px");
})
.on("mouseout", function(d) {
tooltip.transition()
.duration(500)
.style("opacity", 0);
});
// another hack to hide rounded line of first branch (the trunk)
var trunk = branches[0];
svg.append('rect')
.attr('height', getLength(trunk)*0.3)
.attr('width', width)
.attr('x', 0)
.attr('y', yScale(trunk.y))
.attr('fill', 'white');
// svg.selectAll('ellipse')
// .data(leaves)
// .enter()
// .append('ellipse')
// .attr('cx', x2)
// .attr('cy', y2)
// .attr('rx', 4)
// .attr('ry', 10)
// .attr('id', function(d,i){return 'id-' + i})
// .attr('visibility', function(d){
// return d.visible ? 'visible' : 'hidden'
// })
// .attr('transform', function(d){
// // angle in making branch and rotate is different. 20 degree angle in branch eq to -20 degree angle in rotate
// return 'rotate(' + radToDeg(-d.angle) + ' ' + endPt(d).x + ' ' + endPt(d).y + ')';
// //return 'rotate(' + radToDeg(denormalizeAngle(d.angle)) + ' ' + endPt(d).x + ' ' + endPt(d).y + ')';
// })
// //.attr('transform', function(d){return "rotate(" + radToDeg(denormalizeAngle(d.angle)) + ")"})
// .attr('stroke', 'black')
// .attr('fill', "green")
// .on('mouseover', highlightLeaf)
// .on('mouseout', function(d){svg.selectAll('ellipse').style('fill', 'green')});
d3.select('#donate').on('click', update);
d3.select('#animate').on('click', animate);
d3.select('#atonce').on('click', atonce);
var numOfClick = 0;
function update() {
console.log('btn clicked')
numOfClick++;
leaves[numOfClick].visible = true;
svg
.selectAll('use')
.data(leaves)
.transition()
.attr('visibility', function(d){return d.visible ? 'visible' : 'hidden'});
}
function animate() {
for (i = 0; i < leaves.length; i++) {
setTimeout(function(i) {
leaves[i].visible = true;
svg
.selectAll('use#id-'+i)
.data(leaves)
.transition()
.attr('visibility', function(d){return d.visible ? 'visible' : 'hidden'});
}, 100, i);
}
}
function atonce() {
leaves.forEach(function(d){
d.visible = true;
})
svg
.selectAll('use')
.data(leaves)
.transition()
.attr('visibility', function(d){return d.visible ? 'visible' : 'hidden'});
}
function leafScale(scale) {
d3.select('g#layer1')
.attr('transform', 'scale(' + scale*0.1 + ') rotate(132 355 210)');
}
function treeWidth(length,depth) {
return depth === 0 ? (0.4059*length-8.1419)*0.73 : 0.4059*length-8.1419;
//return 0.4059*length-8.1419;
}
function getLength(branch) {
var x2 = xScale(endPt(branch).x);
var y2 = yScale(endPt(branch).y);
var x1 = xScale(branch.x);
var y1 = yScale(branch.y);
return Math.pow(Math.pow((x2-x1),2)+Math.pow((y2-y1),2),0.5);
}
</script>
</body>
</html>