'Spinning wheel in javascript with trigger keystroke
I need a simple help about implement a keystroke event on this code. so that the spinning wheel starts on a keystroke event like the spacebar.
How can i do that? I have this code here and found a event code for the keystroke in javascript.
document.body.onkeyup = function(e){
if(e.keyCode == 32){
//your code
}
}
is there anyone that is good in javascript and can implement this in the code below?
var padding = {top:20, right:40, bottom:0, left:0},
w = 500 - padding.left - padding.right,
h = 500 - padding.top - padding.bottom,
r = Math.min(w, h)/2,
rotation = 0,
oldrotation = 0,
picked = 100000,
oldpick = [],
color = d3.scale.category20();//category20c()
//randomNumbers = getRandomNumbers();
//http://osric.com/bingo-card-generator/?title=HTML+and+CSS+BINGO!&words=padding%2Cfont-family%2Ccolor%2Cfont-weight%2Cfont-size%2Cbackground-color%2Cnesting%2Cbottom%2Csans-serif%2Cperiod%2Cpound+sign%2C%EF%B9%A4body%EF%B9%A5%2C%EF%B9%A4ul%EF%B9%A5%2C%EF%B9%A4h1%EF%B9%A5%2Cmargin%2C%3C++%3E%2C{+}%2C%EF%B9%A4p%EF%B9%A5%2C%EF%B9%A4!DOCTYPE+html%EF%B9%A5%2C%EF%B9%A4head%EF%B9%A5%2Ccolon%2C%EF%B9%A4style%EF%B9%A5%2C.html%2CHTML%2CCSS%2CJavaScript%2Cborder&freespace=true&freespaceValue=Web+Design+Master&freespaceRandom=false&width=5&height=5&number=35#results
var data = [
{"label":"Dell LAPTOP", "value":1, "question":"What CSS property is used for specifying the area between the content and its border?"}, // padding
{"label":"IMAC PRO", "value":2, "question":"What CSS property is used for changing the font?"}, //font-family
{"label":"SUZUKI", "value":3, "question":"What CSS property is used for changing the color of text?"}, //color
{"label":"HONDA", "value":4, "question":"What CSS property is used for changing the boldness of text?"}, //font-weight
{"label":"FERRARI", "value":5, "question":"What CSS property is used for changing the size of text?"}, //font-size
{"label":"APARTMENT", "value":6, "question":"What CSS property is used for changing the background color of a box?"}, //background-color
{"label":"IPAD PRO", "value":7, "question":"Which word is used for specifying an HTML tag that is inside another tag?"}, //nesting
{"label":"LAND", "value":8, "question":"Which side of the box is the third number in: margin:1px 1px 1px 1px; ?"}, //bottom
{"label":"MOTOROLLA", "value":9, "question":"What are the fonts that don't have serifs at the ends of letters called?"}, //sans-serif
{"label":"BMW", "value":10, "question":"With CSS selectors, what character prefix should one use to specify a class?"}
];
var svg = d3.select('#chart')
.append("svg")
.data([data])
.attr("width", w + padding.left + padding.right)
.attr("height", h + padding.top + padding.bottom);
var container = svg.append("g")
.attr("class", "chartholder")
.attr("transform", "translate(" + (w/2 + padding.left) + "," + (h/2 + padding.top) + ")");
var vis = container
.append("g");
var pie = d3.layout.pie().sort(null).value(function(d){return 1;});
// declare an arc generator function
var arc = d3.svg.arc().outerRadius(r);
// select paths, use arc generator to draw
var arcs = vis.selectAll("g.slice")
.data(pie)
.enter()
.append("g")
.attr("class", "slice");
arcs.append("path")
.attr("fill", function(d, i){ return color(i); })
.attr("d", function (d) { return arc(d); });
// add the text
arcs.append("text").attr("transform", function(d){
d.innerRadius = 0;
d.outerRadius = r;
d.angle = (d.startAngle + d.endAngle)/2;
return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")translate(" + (d.outerRadius -10) +")";
})
.attr("text-anchor", "end")
.text( function(d, i) {
return data[i].label;
});
container.on("click", spin);
function spin(d){
container.on("click", null);
//all slices have been seen, all done
console.log("OldPick: " + oldpick.length, "Data length: " + data.length);
if(oldpick.length == data.length){
console.log("done");
container.on("click", null);
return;
}
var ps = 360/data.length,
pieslice = Math.round(1440/data.length),
rng = Math.floor((Math.random() * 1440) + 360);
rotation = (Math.round(rng / ps) * ps);
picked = Math.round(data.length - (rotation % 360)/ps);
picked = picked >= data.length ? (picked % data.length) : picked;
if(oldpick.indexOf(picked) !== -1){
d3.select(this).call(spin);
return;
} else {
oldpick.push(picked);
}
rotation += 90 - Math.round(ps/2);
vis.transition()
.duration(3000)
.attrTween("transform", rotTween)
.each("end", function(){
//mark question as seen
d3.select(".slice:nth-child(" + (picked + 1) + ") path")
.attr("fill", "#111");
//populate question
d3.select("#question h1")
.text(data[picked].question);
oldrotation = rotation;
/* Get the result value from object "data" */
console.log(data[picked].value)
/* Comment the below line for restrict spin to sngle time */
container.on("click", spin);
});
}
//make arrow
svg.append("g")
.attr("transform", "translate(" + (w + padding.left + padding.right) + "," + ((h/2)+padding.top) + ")")
.append("path")
.attr("d", "M-" + (r*.15) + ",0L0," + (r*.05) + "L0,-" + (r*.05) + "Z")
.style({"fill":"black"});
//draw spin circle
container.append("circle")
.attr("cx", 0)
.attr("cy", 0)
.attr("r", 60)
.style({"fill":"white","cursor":"pointer"});
//spin text
container.append("text")
.attr("x", 0)
.attr("y", 15)
.attr("text-anchor", "middle")
.text("SPIN")
.style({"font-weight":"bold", "font-size":"30px"});
function rotTween(to) {
var i = d3.interpolate(oldrotation % 360, rotation);
return function(t) {
return "rotate(" + i(t) + ")";
};
}
function getRandomNumbers(){
var array = new Uint16Array(1000);
var scale = d3.scale.linear().range([360, 1440]).domain([0, 100000]);
if(window.hasOwnProperty("crypto") && typeof window.crypto.getRandomValues === "function"){
window.crypto.getRandomValues(array);
console.log("works");
} else {
//no support for crypto, get crappy random numbers
for(var i=0; i < 1000; i++){
array[i] = Math.floor(Math.random() * 100000) + 1;
}
}
return array;
}text{
font-family:Helvetica, Arial, sans-serif;
font-size:11px;
pointer-events:none;
}
#chart{
position:absolute;
width:500px;
height:500px;
top:0;
left:0;
}
#question{
position: absolute;
width:400px;
height:500px;
top:0;
left:520px;
}
#question h1{
font-size: 50px;
font-weight: bold;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
position: absolute;
padding: 0;
margin: 0;
top:50%;
-webkit-transform:translate(0,-50%);
transform:translate(0,-50%);
}<div id="chart"></div>
<div id="question"><h1></h1></div>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>Solution 1:[1]
You are really close, in your code, you need to call spin() function on key stroke and remove the click handler for spin container.on("click", spin); // remove or comment
document.body.onkeyup = function(e){
if(e.keyCode == 32){
spin()
}
}
Working Code below
var padding = {
top: 20,
right: 40,
bottom: 0,
left: 0
},
w = 500 - padding.left - padding.right,
h = 500 - padding.top - padding.bottom,
r = Math.min(w, h) / 2,
rotation = 0,
oldrotation = 0,
picked = 100000,
oldpick = [],
color = d3.scale.category20(); //category20c()
//randomNumbers = getRandomNumbers();
//http://osric.com/bingo-card-generator/?title=HTML+and+CSS+BINGO!&words=padding%2Cfont-family%2Ccolor%2Cfont-weight%2Cfont-size%2Cbackground-color%2Cnesting%2Cbottom%2Csans-serif%2Cperiod%2Cpound+sign%2C%EF%B9%A4body%EF%B9%A5%2C%EF%B9%A4ul%EF%B9%A5%2C%EF%B9%A4h1%EF%B9%A5%2Cmargin%2C%3C++%3E%2C{+}%2C%EF%B9%A4p%EF%B9%A5%2C%EF%B9%A4!DOCTYPE+html%EF%B9%A5%2C%EF%B9%A4head%EF%B9%A5%2Ccolon%2C%EF%B9%A4style%EF%B9%A5%2C.html%2CHTML%2CCSS%2CJavaScript%2Cborder&freespace=true&freespaceValue=Web+Design+Master&freespaceRandom=false&width=5&height=5&number=35#results
var data = [{
"label": "Dell LAPTOP",
"value": 1,
"question": "What CSS property is used for specifying the area between the content and its border?"
}, // padding
{
"label": "IMAC PRO",
"value": 2,
"question": "What CSS property is used for changing the font?"
}, //font-family
{
"label": "SUZUKI",
"value": 3,
"question": "What CSS property is used for changing the color of text?"
}, //color
{
"label": "HONDA",
"value": 4,
"question": "What CSS property is used for changing the boldness of text?"
}, //font-weight
{
"label": "FERRARI",
"value": 5,
"question": "What CSS property is used for changing the size of text?"
}, //font-size
{
"label": "APARTMENT",
"value": 6,
"question": "What CSS property is used for changing the background color of a box?"
}, //background-color
{
"label": "IPAD PRO",
"value": 7,
"question": "Which word is used for specifying an HTML tag that is inside another tag?"
}, //nesting
{
"label": "LAND",
"value": 8,
"question": "Which side of the box is the third number in: margin:1px 1px 1px 1px; ?"
}, //bottom
{
"label": "MOTOROLLA",
"value": 9,
"question": "What are the fonts that don't have serifs at the ends of letters called?"
}, //sans-serif
{
"label": "BMW",
"value": 10,
"question": "With CSS selectors, what character prefix should one use to specify a class?"
}
];
var svg = d3.select('#chart')
.append("svg")
.data([data])
.attr("width", w + padding.left + padding.right)
.attr("height", h + padding.top + padding.bottom);
var container = svg.append("g")
.attr("class", "chartholder")
.attr("transform", "translate(" + (w / 2 + padding.left) + "," + (h / 2 + padding.top) + ")");
var vis = container
.append("g");
var pie = d3.layout.pie().sort(null).value(function(d) {
return 1;
});
// declare an arc generator function
var arc = d3.svg.arc().outerRadius(r);
// select paths, use arc generator to draw
var arcs = vis.selectAll("g.slice")
.data(pie)
.enter()
.append("g")
.attr("class", "slice");
arcs.append("path")
.attr("fill", function(d, i) {
return color(i);
})
.attr("d", function(d) {
return arc(d);
});
// add the text
arcs.append("text").attr("transform", function(d) {
d.innerRadius = 0;
d.outerRadius = r;
d.angle = (d.startAngle + d.endAngle) / 2;
return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")translate(" + (d.outerRadius - 10) + ")";
})
.attr("text-anchor", "end")
.text(function(d, i) {
return data[i].label;
});
document.body.onkeyup = function(e) {
if (e.keyCode == 32) {
spin()
}
}
function spin(d) {
container.on("click", null);
//all slices have been seen, all done
console.log("OldPick: " + oldpick.length, "Data length: " + data.length);
if (oldpick.length == data.length) {
console.log("done");
container.on("click", null);
return;
}
var ps = 360 / data.length,
pieslice = Math.round(1440 / data.length),
rng = Math.floor((Math.random() * 1440) + 360);
rotation = (Math.round(rng / ps) * ps);
picked = Math.round(data.length - (rotation % 360) / ps);
picked = picked >= data.length ? (picked % data.length) : picked;
if (oldpick.indexOf(picked) !== -1) {
d3.select(this).call(spin);
return;
} else {
oldpick.push(picked);
}
rotation += 90 - Math.round(ps / 2);
vis.transition()
.duration(3000)
.attrTween("transform", rotTween)
.each("end", function() {
//mark question as seen
d3.select(".slice:nth-child(" + (picked + 1) + ") path")
.attr("fill", "#111");
//populate question
d3.select("#question h1")
.text(data[picked].question);
oldrotation = rotation;
/* Get the result value from object "data" */
console.log(data[picked].value)
/* Comment the below line for restrict spin to sngle time */
//container.on("click", spin);
});
}
//make arrow
svg.append("g")
.attr("transform", "translate(" + (w + padding.left + padding.right) + "," + ((h / 2) + padding.top) + ")")
.append("path")
.attr("d", "M-" + (r * .15) + ",0L0," + (r * .05) + "L0,-" + (r * .05) + "Z")
.style({
"fill": "black"
});
//draw spin circle
container.append("circle")
.attr("cx", 0)
.attr("cy", 0)
.attr("r", 60)
.style({
"fill": "white",
"cursor": "pointer"
});
//spin text
container.append("text")
.attr("x", 0)
.attr("y", 15)
.attr("text-anchor", "middle")
.text("SPIN")
.style({
"font-weight": "bold",
"font-size": "30px"
});
function rotTween(to) {
var i = d3.interpolate(oldrotation % 360, rotation);
return function(t) {
return "rotate(" + i(t) + ")";
};
}
function getRandomNumbers() {
var array = new Uint16Array(1000);
var scale = d3.scale.linear().range([360, 1440]).domain([0, 100000]);
if (window.hasOwnProperty("crypto") && typeof window.crypto.getRandomValues === "function") {
window.crypto.getRandomValues(array);
console.log("works");
} else {
//no support for crypto, get crappy random numbers
for (var i = 0; i < 1000; i++) {
array[i] = Math.floor(Math.random() * 100000) + 1;
}
}
return array;
}text {
font-family: Helvetica, Arial, sans-serif;
font-size: 11px;
pointer-events: none;
}
#chart {
position: absolute;
width: 500px;
height: 500px;
top: 0;
left: 0;
}
#question {
position: absolute;
width: 400px;
height: 500px;
top: 0;
left: 520px;
}
#question h1 {
font-size: 50px;
font-weight: bold;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
position: absolute;
padding: 0;
margin: 0;
top: 50%;
-webkit-transform: translate(0, -50%);
transform: translate(0, -50%);
}<div id="chart"></div>
<div id="question">
<h1></h1>
</div>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Tushar |