animation

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

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