animation

Flutter中的动画处理

由 不羁岁月 提交于 2020-01-26 12:27:00
flutter中的动画效果 动画相关的类 1. Animation Animation是Flutter动画库中的核心类，它是个抽象类。会根据预定规则，在单位时间内持续输出动画的当前状态。Animation知道当前动画的状态（eg：动画是否开始、停止、前进或者后退，以及动画的当前值），但却不知道这些状态应用在那个组件对象上。即Animation只用来提供动画数据，而不负责动画的渲染。 2. AnimationController AnimationController用于管理Animation，可以用来设置动画的时长、启动动画、暂停动画、反转动画等。该对象在不使用时需要dispose，否则会造成资源的泄露。 AnimationController controller = AnimationController( duration: const Duration(milliseconds: 2000), vsync: this); //启动动画 controller.forward(); //执行一次 controller.repeat(reverse: true); //重复执行 第二个参数vsync的传入是防止动画离屏之后继续消耗资源。 vsync对象会绑定动画的定时器到一个可视的Widget，所以当Widget不显示时，动画定时器将会暂停，当Widget再次显示时

How do I get this fade animation to work?

由 萝らか妹 提交于 2020-01-26 00:39:52
问题 I'm trying to set up a simple pulsating ring that will highlight a button, to prompt the user to the recommended choice. I made simple fadeIn() and fadeOut() functions, set a delay in the fadeOut(), so that it will trigger as the fadeIn() completes...or at least that's what I intended. What results is, when the button is pressed, the ring instantly goes to alpha = 1, then delays for 2 seconds, and then fades over 2 seconds. Once I have a cycle working, I'd like to put it into a loop to keep

animation with multiple jComponents using jframe

由 我的未来我决定 提交于 2020-01-25 21:18:59
问题 I am having trouble getting the animation visible on top of my garden grid panel. Whichever I add last to the contentpane that one shows. is there anyway to show multiple components at the same time. I've tried switching the classes animation and garden grid to extend jpanel but nothing has worked. Animation is a series of images that shows a character moving when you are dragging it with a mouse. I need that character to move on top of the garden grid panel. any help? package view; import

animation with multiple jComponents using jframe

由 痞子三分冷 提交于 2020-01-25 21:18:31
问题 I am having trouble getting the animation visible on top of my garden grid panel. Whichever I add last to the contentpane that one shows. is there anyway to show multiple components at the same time. I've tried switching the classes animation and garden grid to extend jpanel but nothing has worked. Animation is a series of images that shows a character moving when you are dragging it with a mouse. I need that character to move on top of the garden grid panel. any help? package view; import

animation with multiple jComponents using jframe

由 元气小坏坏 提交于 2020-01-25 21:18:26
问题 I am having trouble getting the animation visible on top of my garden grid panel. Whichever I add last to the contentpane that one shows. is there anyway to show multiple components at the same time. I've tried switching the classes animation and garden grid to extend jpanel but nothing has worked. Animation is a series of images that shows a character moving when you are dragging it with a mouse. I need that character to move on top of the garden grid panel. any help? package view; import

Java w/ Slick - My jump animation seems to jump as fast as the processor can handle

由 落花浮王杯 提交于 2020-01-25 11:11:23
问题 I am making a small game using Slick2D and I run across an issue that makes my background move behind my character (who doesn't move). I'm not sure whether this is an issue with Slick or my code (probably the latter). The most frustrating thing about this issue is that it only occurs sometimes. With the exact same code it works perfectly, but it is completely unpredictable. Any ideas on what I can do? Here's my update method (There's some unfinished stuff in here regarding other aspects of

Java w/ Slick - My jump animation seems to jump as fast as the processor can handle

由 时光毁灭记忆、已成空白 提交于 2020-01-25 11:10:05
问题 I am making a small game using Slick2D and I run across an issue that makes my background move behind my character (who doesn't move). I'm not sure whether this is an issue with Slick or my code (probably the latter). The most frustrating thing about this issue is that it only occurs sometimes. With the exact same code it works perfectly, but it is completely unpredictable. Any ideas on what I can do? Here's my update method (There's some unfinished stuff in here regarding other aspects of

How do you animate path morphs inside of loaded SVG with Snap.svg?

由 倾然丶 夕夏残阳落幕 提交于 2020-01-25 11:06:53
问题 I know you can animate path morhs with snap.svg (How to animate path morphs using snap.svg) Is it possible to 'load' a path and then animate path morph? Or do you HAVE to define the path inside of Snap.svg? (function($) { 'use strict'; // grab the empty svg element in the html var s = Snap(800,600); // load the svg and grab the #arm and its inner elemmnts Snap.load('body.svg', function(f) { var arm = f.select('#arm'), forearm = f.select('#forearm'), bicep = f.select('#bicep'); s.append(arm);

SMIL animation not working using SVG spritesheet

由 两盒软妹~` 提交于 2020-01-25 10:46:06
问题 We are trying to use multiple Smil animations svgs in multiple symbol tags to referencing in the HTML elements. but svg's are loading as expected. I think the issue is related to def elements. Please have a look. Here is the stackbliz live Thanks in advance!! Here is the code <svg style="position:absolute;" width="0" viewBox="0 0 710 231"> <defs> <clipPath id="clip-path-increaseinattacks" class="graph-clipath" animationId="chart1t1"> <path x="150" y="0" height="300" transform=translate(-505,0

RotateAnimation Get Current angle of image

由 ☆樱花仙子☆ 提交于 2020-01-25 10:09:49
问题 I have a question of RotationAnimation. First. Is there a Listener to during animation? start, start animation repeat, repeat animation stop, stop animation. but there are no animation listener to check the on going. second, is any other get a current rotate angle of image? I think, ImageView is rotate by rotationAnimation function. so I made a timer thread and run 1second ''' timer = new Timer(); timerTask = new TimerTask() { public void run(){ Log.e("LOG", " [angle]: " + String.format("%3
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