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tomgp/d3-iconarray.js

Last active March 8, 2016 19:18
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icon array scale interactive example
Raw
readme.md

Icon array scale example

A simple example of using the layout and scale functions of my d3 icon array plugin.

This gist is to illustrate the gapInterval and gapSize properties.

Raw
d3-iconarray.js
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-scale')) :
typeof define === 'function' && define.amd ? define(['exports', 'd3-scale'], factory) :
(factory((global.d3_iconarray = global.d3_iconarray || {}),global.d3));
}(this, function (exports,d3) { 'use strict';
function iconArrayLayout() {
var width = undefined;
var height = undefined;
var widthFirst = true;
var maxDimension = undefined;
function layout(data){
//work our missing height, width stuff
setDimensions(data.length);
return data.map(function(d,i){
return {
data:d,
position:position(i)
};
});
}
function position(i){
if(isNaN(width) || isNaN(height)){
console.log('Warning: width/height undefined')
return 0;
}
if(widthFirst){
return {
x: i % width,
y: Math.floor( i/width )
};
}else{
return {
x: Math.floor( i/height ),
y: i % height
};
}
}
function setDimensions(l){
//neither width or height is defined
if(isNaN(width) && isNaN(height)){
console.log('no width or height');
if(widthFirst){
width = Math.ceil( Math.sqrt(l) );
height = Math.ceil( l / width );
}else{
height = Math.ceil( Math.sqrt(l) );
width = Math.ceil( l / height );
}
}else if(isNaN(width)){ //width undefined
width = Math.ceil( l / height );
}else if(isNaN(height)){ //height undefined
height = Math.ceil( l / width );
}
}
layout.maxDimension = function(x){
var itemPosition = position(x);
if(widthFirst){
var x = Math.max(itemPosition.x, width);
return Math.max(x, itemPosition.y);
}
var y = Math.max(itemPosition.y, height);
return Math.max(y, itemPosition.x);
}
layout.position = function(x){
return position(x);
}
layout.width = function(x){
if(x === undefined) return width;
width = x;
return layout;
};
layout.height = function(x){
if(x === undefined) return height;
height = x;
return layout;
};
layout.widthFirst = function(b){
if(b === undefined) return widthFirst;
widthFirst = b;
return layout;
};
return layout;
};
function iconArrayScale(){
var domain = [0,100];
var range = [0,100];
var gapInterval = 10;
var gapSize = 0; //default no change
var notionalScale = d3.scaleLinear()
.domain(domain)
.range(range);
function scale(domainValue){
var rangeValue = 20;
var adjustedDomainValue = domainValue + Math.floor(domainValue/gapInterval)*gapSize;
//console.log(notionalScale.domain());
return rangeValue = notionalScale(adjustedDomainValue);
}
function rescale(){
//calculate an adjusted domain
var domainLength = (domain[1] - domain[0]) * gapSize;
var gaps = Math.ceil( domainLength/ gapInterval );
var adjustedDomain = [ domain[0], domain[1] + gaps ];
//calculate an adjusted range
notionalScale.domain(adjustedDomain)
.range(range);
}
scale.gapInterval = function(x){
if(!x) return gapInterval;
gapInterval = x;
rescale();
return scale;
};
scale.gapSize = function(x){
if(isNaN(x)) return gapSize;
gapSize = x;
rescale();
return scale;
}
scale.domain = function(array){
if(!array) return domain;
domain = array;
rescale();
return scale;
};
scale.range = function(array){
if(!array) return range;
range = array;
rescale();
return scale;
};
rescale();
return scale;
}
var version = "0.0.1";
exports.version = version;
exports.layout = iconArrayLayout;
exports.scale = iconArrayScale;
}));
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<title>Icon array scaletest</title>
<script src="//d3js.org/d3.v4.0.0-alpha.18.min.js" charset="utf-8"></script>
<script type="text/javascript" src="d3-iconarray.js"></script>
<style type="text/css">
*{
font-family: sans-serif;
font-weight: bold;
letter-spacing: 1px;
}
input[type='range']{
width:600px;
}
p{
font-weight: normal;
}
.arg{
color: #B00;
font-weight: bold;
}
</style>
</head>
<body>
<p>gapInterval(<span class="arg" id="interval-value">4</span>):</p> <input value="4" id="interval-input" type="range" min="0" max="12" step="1"></input>
<p>gapSize(<span class="arg" id="size-value">1</span>):</p><input value="1" id="size-input" type="range" min="0" max="3" step="0.1"></input>
<div id="simple-example">
</div>
</body>
<script type="text/javascript">
var layout = d3_iconarray.layout();
var data = d3.range(1, 145, 1);
var grid = layout(data);
var dotRadius = 10;
var width = 600,
height = 600,
margin = {top:20, bottom:20, left:20, right:20 };
var arrayScale = d3_iconarray.scale()
.domain([ 0, layout.maxDimension(data.length) ])
.range([0, width-(margin.left+margin.right)])
.gapSize(1)
.gapInterval(4);
var svg = d3.select('#simple-example')
.append('svg')
.attr('width',width)
.attr('height',height)
.append('g')
.attr('transform','translate('+margin.left+','+margin.top+')');
svg.selectAll('g')
.data(grid)
.enter()
.append('g').attr('transform', function(d){
return 'translate('+arrayScale(d.position.x)+','+arrayScale(d.position.y)+')'
})
.call(function(parent){
parent.append('text')
.text(function(d){ return d.data; })
.attr('stroke','#000')
.attr('stroke-width',8)
.attr('stroke-linejoin','round')
.attr('text-anchor','middle')
.attr('x',dotRadius)
.attr('y',dotRadius*6/4)
parent.append('text')
.text(function(d){ return d.data; })
.attr('fill','#FFF')
.attr('text-anchor','middle')
.attr('y',dotRadius*6/4)
.attr('x',dotRadius)
});
d3.selectAll('input#interval-input, input#size-input').on('change',function(){
console.log('hiya');
var interval = document.getElementById('interval-input').value;
var size = document.getElementById('size-input').value;
d3.select('#interval-value').text(interval);
d3.select('#size-value').text(size);
arrayScale.gapSize(size)
.gapInterval(interval);
svg.selectAll('g')
.transition()
.attr('transform', function(d){
return 'translate('+arrayScale(d.position.x)+','+arrayScale(d.position.y)+')'
})
})
d3.select(self.frameElement).style("height", (height + 200)+"px");
</script>
</html>
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