I'm in the process of translating AS3 code to JavaScript, and I've come across an AS3 application that utilizes Flash's built-in Blur Filter
Could someone provide insight into the blurring algorithm used by this filter or suggest ways to reproduce it in JavaScript?
Appreciate any help!
Emulating a Gaussian style blur is a popular technique often used in web development, as explained in the documentation:
When the quality property is set to high, it approximates a Gaussian blur filter
This optimized version of a Gaussian filter/Weierstrass transform is particularly efficient when using power of 2 x/y offsets, allowing for real-time application to video. While the exact result may not be achieved in non-Flash apps, the outcome is remarkably close and imperceptible to most observers.
Various methods exist for implementing a Gaussian blur in html/css/javascript. These include techniques involving CSS drop-shadow effects, HTML5 Canvas manipulation with custom filters, javascript processing of bitmap via byte arrays, amongst others. Each method has its own limitations and benefits, which can be discovered through online research to explore different approaches developed by the community.
I personally utilized an implementation by Mario Klingemann for a quick HTML5 project:
Mario Klingemann has created a fast implementation of an “almost gaussian blur algorithm” in JavaScript.
I conducted my comparison using the following images and found that StackBlur produced results similar enough to Flash's BlurFilter for me to use it in my project (although slightly darker, potentially due to omitting some normalization steps for speed):
My Air version; quality set to HIGH and x/y filter offset set to 10: https://i.sstatic.net/kfhkV.png
Here is StackBlur set to a radius of 10: https://i.sstatic.net/8olzs.png
Here is the original bitmap: https://i.sstatic.net/hoTIE.png
My website's JavaScript function uses AJAX to retrieve account information and open a modal for viewing and editing. Sometimes, the details don't update quickly enough in the database before the function collects them again, leading to discrepanc ...
I am looking to integrate a share feature in my app that allows users to easily share content by clicking on a share icon. I want the iOS share page to appear from the bottom of the screen, giving users options to share via message, mail, Twitter, and Face ...
I am currently working on a simple web page layout that consists of a navigation bar at the top and a body wrapper. Whenever a user clicks on a link in the navigation bar, I use .load to load the content of the page into the wrapper div. $(this).ajaxStar ...
I am encountering an error message when attempting to upgrade from Webpack 4 to Webpack 5. The error states: Module.entryModule: Multiple entry modules are not supported by the deprecated API (Use the new ChunkGroup API) I have searched for information o ...
I'm looking to have the ability to nest one plugin inside another. However, my selectors seem too broad and are capturing elements within the nested plugin as well. For instance, consider the following HTML structure: <div class="my-plugin"> ...
Having trouble retrieving data with button click. The issue is that the data is not fetched when clicking the button for the first time, but works fine on the second click. Here's the code snippet: const learnMores = document.querySelectorAll('. ...
I came across a suggestion online for making an if statement more concise: if([1,5,7,22].indexOf(myvar)!=-1) alert('yeah') Instead of the longer version like this: if( myvar==1 || myvar==5 || myvar==7 || myvar==22 ) alert('yeah') Is ...
I am attempting to rotate an object named "moon" (which is represented as a sphere) using a matrix instead of the moon.rotation.y property. Here is the code I am using: moon.applyMatrix(new THREE.Matrix4().makeRotationY(Math.PI/100)); The rotation of the ...
I am currently working on a PHP file called rows2.php that displays results from a database by showing the new id of the field in this format: {'new_id':'92'} My goal is to use JavaScript to load this data and add the new_id surrounded ...
Currently, I am utilizing the ui-select module within AngularJS. <ui-select ng-model="tipData.category" search-enabled="false" name="category" required="required" class="orange-site-color-select custom-select"> <ui-select-match><span clas ...
I am working with two input fields that represent hours and minutes separately. <input type="number" min="0" max="24" step="1" value="00" class="hours"> <input type="number" min="0" max="0.60" step="0.01" value="00" class="minutes"> This se ...
I am looking to create a formatted list using <ol> and <ul> tags with parentheses included. (1) List1 (2) List2 (3) List3 (4) List4 The challenge is to achieve this formatting purely with javascript or jQuery, without relying on any external ...
I am looking to add HTML content to a TinyMCE editor in an ASP.NET MVC project. After some thought, I have found a solution that involves converting the HTML file to a string on the server side and then calling it using Ajax on the client side. Here is a ...
Using Ajax within Laravel to save data involves a form with input fields and a select option. Here is the form structure: <form class="forms" method="get" action=""> {{ csrf_field() }} <div class="form-group row ...
I have a React project that was originally built on node v16 and now I need to update it to node v18. How can I do this quickly without changing dependencies or causing other issues? When I tried installing the dependencies in node 18, everything seemed f ...
Attempting to create a Vue application that supports two languages, utilizing local storage and store to store the selected language. Initially, everything appears to be functioning correctly. After the user logs in, the default language is displayed in b ...
I'm encountering an issue while attempting to validate my date input. I've tried using moment js, but it seems there's a problem. The error message "date invalid" keeps popping up! Here is the code snippet: app.get("/api/timestamp/:date_s ...
I am facing a challenge with handling article information stored in a json file, where each article has a unique id. The format of the json data is as follows: [{"title":"ISIS No. 2 killed in US special ops raid", "id":"14589192090024090", ...
Custom Component function ProductCard ({image, name, stats, id}){ let dispatch = useDispatch() let quantity = 1 return ( <> <div className="product-card" ...
As a newcomer to programming, I am trying to create a table that allows users to add new rows by clicking a button. Each row should have a field for inputting an ID which corresponds to some predefined numbers in another table, and then the other field sho ...