SwiftUI Line Graph Animation using Vector Arithmetic

Why do you want to avoid Metal? Enabling its support is as easy as wrapping your LineGraphShapes into Group and modifying it with a drawingGroup(). Try it out: … Group { let gradient = LinearGradient( gradient: Gradient(colors: [Color.red, Color.blue]), startPoint: .leading, endPoint: .trailing ) LineGraphShape(points: points[selectedPointType], closePath: true) .fill(gradient) LineGraphShape(points: points[selectedPointType], closePath: false) .stroke( gradient, … Read more

How do you detect when CSS animations start and end with JavaScript?

Bind the appropriate events to the element, e.g. el.addEventListener(“animationstart”, function() {}, false); el.addEventListener(“animationend”, function() {}, false); el.addEventListener(“animationiteration”, function() {}, false); https://developer.mozilla.org/en-US/docs/CSS/Tutorials/Using_CSS_animations#Using_animation_events Note: You may need to add the appropriate prefixed-events as well, e.g. webkitAnimationEnd

jQuery Animation – Smooth Size Transition

Try this jQuery plugin: // Animates the dimensional changes resulting from altering element contents // Usage examples: // $(“#myElement”).showHtml(“new HTML contents”); // $(“div”).showHtml(“new HTML contents”, 400); // $(“.className”).showHtml(“new HTML contents”, 400, // function() {/* on completion */}); (function($) { $.fn.showHtml = function(html, speed, callback) { return this.each(function() { // The element to be modified var … Read more

Start Activity with an animation

I am using this in a current project of mine, it is basically pretty simple. You define a new animation style in your styles.xml, like this: <!– just defines top layer “Animation” –> <style name=”Animation” /> <!– the animations must have been defined in your “anim” folder, of course –> <style name=”Animation.MyAwesomeAnimation” parent=”android:style/Animation.Activity”> <item name=”android:activityOpenEnterAnimation”>@anim/myawesomeanimation_enter</item> … Read more

Android: Using ObjectAnimator to translate a View with fractional values of the View’s dimension

Actually object animators accept fractional values. But maybe you didn’t understand the underlying concept of an objectAnimator or more generally a value animator. A value animator will animate a value related to a property (such as a color, a position on screen (X,Y), an alpha parameter or whatever you want). To create such a property … Read more

SVG trigger animation with event

Here’s an article that covers what you need: http://dev.opera.com/articles/view/advanced-svg-animation-techniques/ Edit: link is removed. Archived copies: https://github.com/operasoftware/devopera-static-backup/blob/master/http/dev.opera.com/articles/view/advanced-svg-animation-techniques/index.html http://web.archive.org/web/20140228202850/http://dev.opera.com/articles/view/advanced-svg-animation-techniques In short: Create the <animation> with begin=”indefinite” so that it won’t treat the animation as starting on document load. You can do this either via JavaScript or raw SVG source. Call beginElement() on the SVGAnimationElement instance (the <animate> … Read more

How to create an animated GIF from JPEGs in Android (development)

See this solution. https://github.com/nbadal/android-gif-encoder It’s an Android version of this post. http://www.jappit.com/blog/2008/12/04/j2me-animated-gif-encoder/ To use this class, here is an example helper method to generate GIF byte array. Note here the getBitmapArray() function is a method to return all the Bitmap files in an image adapter at once. So the input is all the Bitmap files … Read more

Does JavaScript provide a high resolution timer?

Almost all modern browsers provide a high resolution timer. It’s the “High Resolution Time” W3C standard: http://www.w3.org/TR/hr-time/#sec-DOMHighResTimeStamp. It allows you to get a sub-millisecond accurate timestamp by calling window.performance.now(). This returns a time stamp in ms, but it is a float so you still get sub-millisecond resolution. Very old browsers may implement a “prefixed” version … Read more