How can I lock diagonal movement with FabricJS? I know it can be locked vertical and horizontal, but I can't find an easy way to lock diagonal.
What I need is the ability to move one canvas group only in the same X axis or Y axis once a time.
Tag: javascript,html5,fabricjs
How can I lock diagonal movement with FabricJS? I know it can be locked vertical and horizontal, but I can't find an easy way to lock diagonal.
What I need is the ability to move one canvas group only in the same X axis or Y axis once a time.
FabricJS does not have a native API hook to lock an object to follow along a diagonal line.
You will have to listen for the object's :moving events and then manually reset its x & y position to keep it on the line. Here's a function that reports which [x,y] on the line is closest to the mouse [x,y]:
// calculate the point on the line that's
// nearest to the mouse position
// line={x0:10,y0:10,x1:100,y1:25}
function linepointNearestMouse(line,mouseX,mouseY) {
//
lerp=function(a,b,x){ return(a+x*(b-a)); };
var dx=line.x1-line.x0;
var dy=line.y1-line.y0;
var t=((mouseX-line.x0)*dx+(mouseY-line.y0)*dy)/(dx*dx+dy*dy);
var lineX=lerp(line.x0, line.x1, t);
var lineY=lerp(line.y0, line.y1, t);
return({x:lineX,y:lineY});
};
You need some css for that #printOnly { display : none; } @media print { #printOnly { display : block; } } ...
Trigger the click event like this: $('._repLikeMore').trigger('click'); ...
document.GetElementById("tombolco").style = "display:block"; That's not the right way. This is document.getElementById("tombolco").style.display = 'block'; Also note that it is getElementById, not with a capital G. Same with 'none',Rest of your code is fine. Fiddle...
ofcservices.getnews() is a promise You need manage with the function sucess and error ofcservices.getnews(). success(function(data) { $scope.news=data }). error(function(data, status, headers, config) { //show a error }); As weel change app.factory('news' to app.factory('newsFactory' and call it in controller('news', function($scope, newsFactory) { You can get more data about promise in the...
javascript,node.js,mocha,supertest
Create a separate file called app.js. The only purpose of this file would be to run the server. You'll also need to export your app object from server.js. So, your server.js would look like this // set up ====================================================================== var express = require('express'); var app = express(); // create our...
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According to the Brackets Beautify Documentation, it uses JS-Beautify internally. The documentation for the latter mentions these parameters: -n, --end-with-newline -p, --preserve-newlines If you can force Adobe Brackets to pass parameters to the js-beautify call, I guess one of these should do the trick. UPDATE According to the Github repo,...
javascript,php,jquery,html,css3
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javascript,jquery,html,json,html5
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Let suppose on button click you are calling ajax method <button onclick="LoadData();"/> before ajax call show image and onComplete ajax method hide this image function LoadData(){ $("#loading-image").show(); $.ajax({ url: yourURL, cache: false, success: function(html){ $("Your div id").append(html); }, complete: function(){ $("#loading-image").hide(); } }); } ...
You can use a simple array based test like var validCodes = ['IT00', 'O144', '6A1L', '4243', 'O3D5', '44SG', 'CE64', '54FS', '4422']; function validItems(items) { for (var i = 0; i < items.length; i++) { if (validCodes.indexOf(items[i]) == -1) { return items[i]; } } return ''; } var items = ["IT00",...
javascript,angularjs,internet-explorer-9,google-fusion-tables
You should use the Angular $http.jsonp() request rather than $http.get(). JSONP or “JSON with padding” is the communication technique which allows for data to be requested from a server under a different domain (also known as a Cross Origin Request). Which is what you have used in your jQuery AJAX...
Instead of going for recursive, you can try this: classPromise = array.map(function(obj){ return obj.save();}); in es6, same thing can be: classPromise = array.map(obj => obj.save()); Edit You can reduce the whole function to: function myFunction(array, value) { if ( !array || !array.length) return; console.log("array: " + array.length); if (!value) value...
javascript,gulp,require,browserify
Without custom logic, it's not possible to achieve what you want. However I believe you could find a compromise by using ES6 modules instead of CommonJS modules. You would be able to write export var test = 'test'; which declares and exports a variable test. You can then import it...
obj.roles[0] is a object {"name":"with whom"}. you cant replace string with object. you need to refer to property "name" in the object obj.roles[0].name Another problem is that var finalXML get a new value every line. you need to add a new value to the variable, not replcae it. var finalXML...
javascript,knockout.js,requirejs,knockout-components
If you don't "override" the loadComponent method then the default component loader's loadComponent will be invoked which only calls the loadViewModel if you've provided a viewModel config option. In your getConfig method you are returning a config with require which means that your require.js module has to provide the necessary...
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Having a Line series: To modify the line thickness, change the series format.stroke.size property. Ie: Chart1.series.items[0].format.stroke.size=2; To modify the series color, change the series format.stroke.fill property. Ie: Chart1.series.items[0].format.stroke.fill="red"; ...
The i++ is using post increment, so the value of the expression i++ is what the value was in the variable i before the increment. This code: if(sortedLetters[i] !== sortedLetters[i++]) return true; does the same thing as: if(sortedLetters[i] !== sortedLetters[i]) return true; i = i + 1; As x !==...
Use onbeforeunload function of javascript window.onbeforeunload = function() { //Declare cookie to close state } This function will be called every time page refreshes Update: To make loop through every value use this $.each this way: var new_value = ""; window.onbeforeunload = function() { $.each($('div.box_container div.box_handle'),function(index,value){ new_value = ($(value).next('.box').css('display') ==...
javascript,json,meteor,data,startup
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javascript,jquery,html,internet-explorer
Your call of setTimeout fails in any browser, but in IE9 with an exception(what stops the further script-execution). It's a matter of time. At the moment when you call var timer = setTimeout(slideshow, 8000); slideshow is undefined , and undefined is not a valid argument for setTimeout. Wrap the call...
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javascript,angularjs,restangular
You didn't inject module of 'Restangular' service. Try like this angular.module('AngApp', ['angularGrid','restangular']); ...
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Two issues: There is a typo in your click listener code, javascript is case sensitive, infowindow and infoWindow are different objects, so you are not setting the position of the infowindow correctly. infowindow.open(map); infoWindow.setPosition(event.latLng); You are currently placing the infowindow at the place that is clicked infoWindow.setPosition(event.latLng);. If you want...
First you need to get your timestamps in to Date() objects, which is simple using the constructor. Then you can use the below function to calculate the difference in days: var date1 = new Date(1433097000000); var date2 = new Date(1434479400000); function daydiff(first, second) { return (second - first) / (1000...
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I guess OP wants to link the button more with corresponding click span class $('.clickme').click(function(){ $(this).parent().prev().find(".click").toggle(); }); FIDDLE DEMO...
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Your PHP is checking if $_POST['submit'] contains a value. Your form does not contain a form element with the attribute name="submit", so therefore it fails and moves straight to the else statement. If you want to check if the form was posted then you should instead check for: if (!empty($_POST))...
Assuming the interval is between 1 and 15 seconds and changed after each interval. setIntervsal() does not fit. setTimeout() is here a good choice, because of the single interval of waiting. Every next interval gets a new time to wait and has to be called again. The random waiting time...
javascript,jquery,xml,jquery-mobile
EMI and CustomerName are elements under json so you can use .find() to find those elements and then text() to get its value. $(data).find("json").each(function (i, item) { var heures = $(item).find("CustomerName").text(); var nbr = $(item).find("EMI").text(); console.log(heures); }); .attr() is used to get the attribute value of an element like in...
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javascript,jquery,html,arrays,contains
You can use :contains selector. I think you meant either one of those values, in that case var arr = ['bat', 'ball']; var selectors = arr.map(function(val) { return ':contains(' + val + ')' }); var $lis = $('ul li').filter(selectors.join()); $lis.css('color', 'red') <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <ul> <li>cricket bat</li> <li>tennis ball</li> <li>golf ball</li>...
A jQuery only way would be to iterate over the nth-child(4n) $('.thumbnail:nth-child(4n)').each(function(){ $(this) .prevAll('.thumbnail').andSelf() .wrapAll($('<div/>',{class:"new"})) }); Demo Considering the complexity, not sure whether the prevAll() performs better than the plain for loop. Referring one of my similar answer here...
javascript,backbone.js,coffeescript
The handler for each type of event is passed a certain set of arguments. The Catalog of Events has this to say about a "change" event: "change" (model, options) — when a model's attributes have changed. So if you say this: this.listenTo(members, 'change', this.fetch) then fetch will be called like...
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javascript,jquery,ajax,spring-mvc,datatables
DataTables already sends parameters start and length in the request that you can use to calculate page number, see Server-side processing. If you still need to have the URL structure with the page number, you can use the code below: "ajax": { "data": function(){ var info = $('#propertyTable').DataTable().page.info(); $('#propertyTable').DataTable().ajax.url( "${contextPath}/admin/getNextPageData/"+(info.page...
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javascript,arrays,angularjs,foreach
You cannot store key-value pair in array. Use object to store key-value pair. See comments inline in the code. var obj = {}; // Initialize the object angular.forEach(data, function(value, key) { if (value.start_date > firstdayOfWeek && value.start_date < lastdayOfWeek) { if (obj[value.firstname]) { // If already exists obj[value.firstname] += value.distance;...