animation canons Abstract_Udine_30_10_09_eng

合集下载

CABasicAnimation使用总结

CABasicAnimation使⽤总结CABasicAnimation使⽤总结实例化使⽤⽅法animationWithKeyPath:对 CABasicAnimation进⾏实例化，并指定Layer的属性作为关键路径进⾏注册。

//围绕y轴旋转CABasicAnimation *transformAnima = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"];设定动画设定动画的属性和说明属性说明duration动画的时长repeatCount重复的次数。

不停重复设置为 HUGE_VALFrepeatDuration设置动画的时间。

在该时间内动画⼀直执⾏，不计次数。

beginTime指定动画开始的时间。

从开始延迟⼏秒的话，设置为【CACurrentMediaTime() + 秒数】的⽅式timingFunction设置动画的速度变化autoreverses动画结束时是否执⾏逆动画fromValue所改变属性的起始值toValue所改变属性的结束时的值byValue所改变属性相同起始值的改变量transformAnima.fromValue = @(M_PI_2);transformAnima.toValue = @(M_PI);transformAnima.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];transformAnima.autoreverses = YES;transformAnima.repeatCount = HUGE_VALF;transformAnima.beginTime = CACurrentMediaTime() + 2;防⽌动画结束后回到初始状态只需设置removedOnCompletion、fillMode两个属性就可以了。

animationinterface 使用方法

animationinterface 使用方法（实用版3篇）《animationinterface 使用方法》篇1`animationinterface` 是一个用于在JavaScript 中创建动画效果的库。

以下是使用`animationinterface` 的基本步骤：1. 引入`animationinterface` 库：```javascriptimport { AnimationInterface } from "animationinterface";```2. 创建一个动画对象：```javascriptconst animation = new AnimationInterface();```3. 定义动画序列：```javascriptconst sequence = {delay: 100,steps: [{ duration: 200, fill: "forwards" },{ delay: 50, duration: 200, fill: "forwards" },{ delay: 150, duration: 200, fill: "forwards" }]```在上面的代码中，`delay` 表示序列开始前暂停的时间，`duration` 表示每个步骤的持续时间，`fill` 表示结束方式。

在本例中，第一个步骤的持续时间为200 毫秒，第二个步骤的持续时间为200 毫秒，第三个步骤的持续时间为200 毫秒。

在第二个步骤之后，动画暂停了50 毫秒，然后执行第三个步骤。

在第三个步骤之后，动画又暂停了150 毫秒。

4. 应用动画序列：```javascriptanimation.play(sequence);```上述代码将在页面上应用定义的动画序列。

可以使用`stop()` 方法停止动画，并使用`pause()` 方法暂停动画。

animationfinish 用法

animationfinish 用法animationfinish 是一个常用于监听 CSS 动画结束的事件。

当 CSS 动画结束时，这个事件会被触发，使得开发者可以在动画结束后执行特定的操作，比如改变元素的样式或开始另一个动画。

基本用法你可以使用 JavaScript 的 addEventListener 方法来监听 animationfinish 事件。

需要注意的是，为了兼容不同的浏览器，你可能还需要监听 webkitAnimationEnd、mozAnimationEnd 和 MSAnimationEnd 等事件。

下面是一个基本的使用示例：javascriptvar element = document.getElementById('myElement');element.addEventListener('animationend', function() {// 动画结束后要执行的代码console.log('动画已结束');}, false);// 为了兼容不同的浏览器，你可能还需要添加以下监听器element.addEventListener('webkitAnimationEnd', function() {console.log('动画已结束');}, false);element.addEventListener('mozAnimationEnd', function() {console.log('动画已结束');}, false);element.addEventListener('MSAnimationEnd', function() {console.log('动画已结束');}, false);注意事项浏览器兼容性：如上所述，不同的浏览器可能使用不同的事件名称。

2020-2021学年郑州市新意中学高三英语二模试卷及参考答案

2020-2021学年郑州市新意中学高三英语二模试卷及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AThank you. It’s my great honor to be given this award.You cannot imagine that I have always been a late starter. Years ago, when I was 16, I took an important exam — GCE(General Certificate of Education), which turned out to be a failure. My dad was reading my report card and saw that my position in class was 29th, but the number in class was 29. It meant that I had achieved the distinction of being bottom of my class.I wasn’t lazy, and I was really trying. You can picture how I felt. Dad put his hand on my shoulder and said, “You can only do the best you can, but whatever you decide to do, make sure you love it.” He was a really sweet guy and a great man. I knew his attempt to hide his disappointment with some of his encouraging words. I was depressed for a week, but his advice was a wake-up call.Fortunately I love working with my hands, and I was good at two things: woodwork and art, and I really loved to draw and paint. I was quite talented. Dad strongly encouraged me to go to art school, which in those days wasn’t the obvious place that a father would suggest.So I got into Hartlepool College of Art. The college was a revelation (出乎意料), the passionate teachers there, who were extremely interested in the students, not just tolerating them but actually engaging with them. It was a world apart from my schooling until then. It’s extraordinary what an enthusiastic teacher can do, drawing the student out, lighting independence, and encouraging a design of your own future, rather than waiting for something to happen. I’m honored to have become one of these passionate teachers years later.My teachers inspired me, and thanks to my dad, here I am tonight. I think I should mention all the talents I have worked with over time, and to my kids and my wife Giannina, thank you.Thank you for this great award. I shall find a very special place for it.1. How did the author feel after taking GCE?A. Happy.B. Upset.C. Tired.D. Relieved.2. What didHartlepoolCollege of Art impress the author most?A. The teachers were strict with students.B. The students set good examples for each other.C. The teachers inspired students’ passion for learning.D. The students got prepared for their lessons independently.3. The author gave this speech to ________.A. share his career choiceB. explain his teaching methodsC. describe his life experienceD. show his appreciationBElizabeth Spelke, a cognitive psychologist at Harvard, has spent her career testing the world’s most complex learning system-the mind of a baby. Babies might seem like no match for artificial intelligence (AI). They are terrible at labeling images, hopeless at mining text, and awful at video games. Then again, babies can do things beyond the reach of any AI. By just a few months old, they’ve begun to grasp the foundations of language, such as grammar. They’ve started to understand how to adapt to unfamiliar situations.Yet even experts like Spelke don’t understand precisely how babies or adults learn. Consider one of the most impressive examples of AI, Alpha Zero, a programme that plays board games with superhuman skill. After playing thousands of games against itself at a super speed, and learning from winning positions, Alpha Zero independently discovered several famous chess strategies and even invented new ones. It certainly seems like a machineeclipsinghuman cognitive abilities. But Alpha Zero needs to play millions more games than a person during practice to learn a game. Most importantly, it cannot take what it has learned from the game and apply it to another area.To some AI experts, that calls for a new approach. In a November research paper, Francois Chollet, a well-known AI engineer, argued that it’s misguided to measure machine intelligence just according to its skills at specific tasks. “Humans don’t start out with skills; they start out with a broad ability to acquire new skills,” he says. “What a strong human chess player is demonstrating is not only the ability to play chess, but the potential to fulfill any task of a similar difficulty.”4. Compared to an advanced AI programme, a baby might be better at ________.A playing games B. identifying locations C. labeling pictures D. making adjustments5. What does the underlined word “eclipsing” in Paragraph 3 probably mean?A. Imitating.B. Beating.C. Limiting.D. Promoting.6. According to the text, Francois Chollet may agree that ________.A. AI is good at completing certain assignments.B. AI is likely to gain abilities with less training.C. AI lacks the ability of acquiring specific skills.D. AI performs better than humans in cognitive ability.7. Whichwould be the best title for this passage?A. What is exactly intelligence?B. Why is modern AI advanced?C. Where is human intelligence going?D. How do humans face the challenge of AI?CA team of researchersfrom theUniversityofColorado Boulderhave created a revolutionary type of robotic muscles. They are strong and flexible at the same time, can feel the movements they perform and, whenever they suffer damage, they can self-heal. However, what is best about them is probably the fact that they are extremely cheap to manufacture.The robotic muscles have been called actuators, and have drawn inspiration from real-life muscles. By creating robots equipped with this kind of actuators, researchers would allowthem to perform movements just like human muscles.To make the robotic muscles work, they filled some flexible material with electrodes(电极)and with liquid and oil. Then, they applied some electricity, and the liquid and oil started moving around the electrodes and powered them. This way, the robotic muscles started contracting and relaxing just like real muscles, but a lot quicker.Researchers also took inspiration from the variety of human muscles, and created more types of actuators, each of them performing a different movement. They called these robotic muscles HASEL ( Hydraulically-Amplified Self-healing Electrostatic). However, they are superior to biological muscles as they are stronger, faster, and more flexible.Even the researchers were amazed they could develop such technology. Eric Acome, the author of one of the studies, explained what is unique about the robotic muscles.“The ability to create electrically powered soft actuators that lift a gallon of water at several times per second is something we haven't seen before.”These muscles are special because they are also self-healing. This property is given by the liquid placed inside of them, which also gives them a lot more advantages than those mechanisms (机械)using solids. In the end, thematerial which keeps the liquid, the oil and the electrodes is extremely cheap. It is a type of polymer (聚合物)similar to the one used for potato chips bags, and can be manufactures for only 10 cents.8. What can we learn about actuators?A. They can heal on their own.B. They are biological muscles.C. They can not move like human muscles.D. They are slower to react than real muscles.9. What do actuators use to directly power electrodes?A. Solids.B. Liquid and oil.C. A type of polymer.D. Potato chips bags.10. What is the last paragraph mainly about?A. The origin of actuators.B. The opinions on actuators.C. The advantages of actuators.D. The significance of actuators.11. In which part of a newspaper will the textmost probably appear?A. Health.B. Culture.C. Education.D. Technology.DNina Wygant, 11, sits in front of a long table in a classroom that looks more like a trendy coffee shop than an elementary school classroom. Some of her fifth-grade classmates at Hopewell Memorial Junior High School sit on high-top chairs at counters. Others choose to sit in club chairs or soft bean bags in comfortable. "I like it because it gives us an environment we like or need to settle down and read a book that we would like to concentrate on instead of having desks and being all quiet," said Vivian Garcia, 10. “You can just space out and have your own little area. I find it very amazing that you can pick your own books instead of being told what to read.”That’s the end goal, said teacher Heather Shadish. Reading has always been a passion for this English language arts and science teacher, a passion she instills（灌输）in her pupils. Back then, in her literature class in graduate school at Chatham University, a professor read aloud the first chapter ofBecause of Winn-Dixieby Kate DiCamillo, a Newbery Medalist. "That was the moment I knew I wanted to some day teach reading. There was a spark there. I just felt these are the kind of books I need to share with kids ---the books that are going to make them feel something and make them fall in love with reading instead of reading being achore.”But information in children's workbooks is limited, so they open tablets and connect to Epic - a digital library that's free to educators and librarians, but $7.99 a month for parents — giving kids unlimited access to approximately 35,000 books（both print and audio）, quizzes and videos to enhance learning.“Epic gives students access to information not found in a textbook and presents it in a more interesting way,"she said.12. What does Vivian think of the reading experience?A. She favors club chairs and free discussion.B. She feels comfortable to be told what to read.C. She enjoys the environment and reading choice.D. She finds it easy to pick a book in a crowded area.13. What does the underlined word “chore" in paragraph 2 mean?A. Task.B. Process.C. Habit.D. Skill.14. What can children get from Epic?A. Free audio books.B. Tasks on reading levels.C. Advice from educators.D. Useful learning resources.15. Which of the following is the best title of the passage?A. A Teacher's New Reading MethodB. Pupils' love of Reading RoomC. Options of Teaching ReadingD. Easy Access to Digital Reading第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

animation用法css

一、什么是CSS动画CSS动画是通过使用CSS样式来实现的动态效果，通过改变元素的属性值，比如位置、尺寸、颜色等，从而让元素呈现出动态变化的效果。

CSS动画可以通过关键帧动画、过渡动画和动画属性等方式来实现。

二、 CSS3动画属性1. animation-name：定义动画名称，可以通过keyframes规则来定义关键帧动画的名称。

2. animation-duration：定义动画持续时间，动画持续的时间长度，单位可以是秒（s）或毫秒（ms）。

3. animation-timing-function：定义动画的时间函数，用于描述动画执行的速度变化，比如匀速、加速、减速或抛物线等。

4. animation-delay：定义动画延迟时间，动画延迟开始执行的时间长度，单位可以是秒（s）或毫秒（ms）。

5. animation-iteration-count：定义动画的播放次数，可以设置为具体的次数或无限次播放。

6. animation-direction：定义动画的播放方向，可以选择正向、反向或交替播放。

7. animation-fill-mode：定义动画在执行前和执行后如何呈现，可以选择保持、后退、向前或默认值。

8. animation-play-state：定义动画的播放状态，可以选择暂停或播放。

9. animation：以上所有属性的简写属性，可以一次性定义动画的所有属性值。

三、实现CSS3动画的方式1. 使用keyframes规则定义关键帧动画keyframes可以定义动画的关键帧，通过指定不同百分比的关键帧来描述动画的不同状态，结合动画属性，可以实现丰富多样的动画效果。

示例代码：```CSSkeyframes mymove {0 {top: 0;}25 {top: 100px;}50 {top: 50px;}75 {top: 150px;}100 {top: 0;}}```2. 使用animation属性应用动画通过animation属性应用定义好的关键帧动画，实现页面元素的动态效果。

animation实例方法

animation实例方法Animation实例方法是编程中用于控制动画效果的方法。

通过使用这些方法，开发者可以创建出各种各样的动画效果，从简单的平移、缩放，到复杂的旋转、路径动画等。

本文将介绍一些常用的Animation实例方法，并提供一步一步的详细解释和示例代码。

一、setDuration(long duration)setDuration方法用于设置动画的持续时间，以毫秒为单位。

通过调用该方法可以控制动画的快慢程度。

例如，将动画的持续时间设置为1000毫秒，即1秒，动画将在1秒内完成。

示例代码：javaAnimation animation = new Animation();animation.setDuration(1000);二、setInterpolator(Interpolator interpolator)setInterpolator方法用于设置动画的插值器，用于控制动画播放过程中的速度变化。

插值器决定了动画播放过程中的动画补间值的计算方式，常见的插值器有线性插值器、加速插值器、减速插值器、弹跳插值器等。

通过设置不同的插值器，可以实现不同的动画效果。

示例代码：javaAnimation animation = new Animation();animation.setInterpolator(new AccelerateDecelerateInterpolator());三、setRepeatCount(int repeatCount)setRepeatCount方法用于设置动画的重复次数。

通过调用该方法可以实现动画的循环播放。

可以将重复次数设置为具体的次数，也可以设置为Animation.INFINITE，表示无限循环播放。

示例代码：javaAnimation animation = new Animation();animation.setRepeatCount(3);四、setRepeatMode(int repeatMode)setRepeatMode方法用于设置动画的重复模式。

animation的用法总结大全

animation的用法总结大全（学习版）编制人：__________________审核人：__________________审批人：__________________编制学校：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如英语单词、英语语法、英语听力、英语知识点、语文知识点、文言文、数学公式、数学知识点、作文大全、其他资料等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor.I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!In addition, this shop provides various types of classic sample essays, such as English words, English grammar, English listening, English knowledge points, Chinese knowledge points, classical Chinese, mathematical formulas, mathematics knowledge points, composition books, other materials, etc. Learn about the different formats and writing styles of sample essays, so stay tuned!animation的用法总结大全animation的意思animation的简明意思n. 活泼；生气；兴奋；动画片；动画片制作英式发音 [ˌænɪ'meɪʃn] 美式发音 [ˌænɪ'meɪʃn]animation的具体用法如：Role animation manufacture, expression animation. Animated cartoon manufacture.角色动画制作, 表情动画. 动画片制作.在此句中animation表示动画片制作的意思It is to be a wholesome childrens animation in the classic Disney mode.这是经典的迪士尼模式的完全为儿童而设的动画片.在此句中animation表示动画片的意思animation的用法例句Role animation manufacture, expression animation. Animated cartoon manufacture.角色动画制作, 表情动画. 动画片制作.在此句中animation表示动画片制作的意思computer/cartoon animation电脑动画 / 动画片制作在此句中animation表示动画片制作的意思We will be debuting the feature animation of this wonderful tale of unconditional love and friendship.我们将首次展现关于无条件的爱和友谊的童话的动画片.在此句中animation表示动画片的意思It is to be a wholesome childrens animation in the classic Disney mode.这是经典的迪士尼模式的完全为儿童而设的动画片.在此句中animation表示动画片的意思He was full of colour and animation.他充满魅力,生气勃勃.在此句中animation表示生气的意思。

animations动画使用详解

animations动画使用详解一、动画类型Android的animation由四种类型组成：alpha、scale、translate、rotateXML配置文件中alpha渐变透明度动画效果scale渐变尺寸伸缩动画效果translate画面转换位置移动动画效果rotate画面转移旋转动画效果Java Code代码中AlphaAnimation渐变透明度动画效果ScaleAnimation渐变尺寸伸缩动画效果TranslateAnimation画面转换位置移动动画效果RotateAnimation画面转移旋转动画效果二、Android动画模式Animation主要有两种动画模式：tweened 和frame•一种是tweened animation(渐变动画)XML中JavaCodealpha AlphaAnimationscale ScaleAnimation•一种是frame by frame(画面转换动画)XML中JavaCodetranslate TranslateAnimationrotate RotateAnimation三、XML文件中定义动画①打开Eclipse，新建Android工程②在res目录中新建anim文件夹③在anim目录中新建一个myanim.xml(注意文件名小写)④加入XML的动画代码四、Android XML动画解析1. Alpha2. Scale3. Translate4. RotateXML中使用动画效果五、Java代码中定义动画六、Android 代码动画解析1. AlphaAnimation AlphaAnimation类对象定义AlphaAnimation类对象构造设置动画持续时间2. ScaleAnimation ScaleAnimation类对象定义ScaleAnimation类对象构造设置动画持续时间3. TranslateAnimation ranslateAnimation类对象定义TranslateAnimation类对象构造4. RotateAnimation RotateAnimation类对象定义RotateAnimation类对象构造如何Java代码中使用动画效果使用从View父类继承过来的方法startAnimation()来为View或是子类View等等添加一个动画效果1.public void startAnimation (Animation animation)2.view.startAnimation(myAnimation_Alpha);3.view.startAnimation(myAnimation_Scale);4.view.startAnimation(myAnimation_Translate);5.view.startAnimation(myAnimation_Rotate);。

css中animation的用法

css中animation的用法CSS中animation的用法一、什么是animation?CSS中的animation允许开发者可以定义用于一个元素或者一个页面元素的动画效果。

通过animation，开发者可以设置元素的动画方式、动画时间、动画次数等参数，实现在网页中形象生动地展示元素的变化和动作。

二、CSS animation参数介绍1.animation-name：t设置动画的名称；2.animation-duration：设置动画持续时间；3.animation-delay：t设置动画延迟执行的时间；4.animation-iteration-count：t设置动画重复次数；5.animation-direction：t设置动画是否循环播放；6.animation-timing-function：t设置动画的运动曲线，控制动画的速度；7.animation-fill-mode：t设置元素在动画结束之后的样式；三、CSS animation的使用1. 在CSS文件中编写动画参数：例如：设置一个名叫myanimation的动画，动画持续时间为5秒，重复次数为3次，每次执行开始之间的延迟时间为2秒：@keyframes myanimation {t0% { left: 0; }t100% { left: 200px; }}.myDiv {tanimation-na myanimation;tanimation-duration: 5s;tanimation-iteration-count: 3;tanimation-delay: 2s;}然后，将选择器.myDiv应用到需要实现动画效果的元素上。

2. 使用jQuery实现动画在jQuery中，可以使用animate()方法实现任意形式的动画例如：$(selector).animate( {tproperty：valuetduration：valueteasing：valuetcomplete：functiont});参数说明：1.property：表示动画改变的CSS属性；2.value：表示CSS属性的变化值；3.duration：表示动画持续时间；4.easing：表示动画的运动曲线；plete：指出动画完成的回调函数。

animation用法

animation用法animation是CSS3中用來控制元素動畫效果的屬性，它可以媲美Flash動畫效果，使得網站立體生動，更易吸引用戶去駐足觀看，大大提升了網站展示效果。

animation屬性可以通過 @keyframes 語法來設置，其定義內容可為動作或者狀態及其相應時間。

animation屬性有再次定義屬性包括 animation-name、animation-duration、animation-timing-function、animation-delay、animation-iteration-count、animation-direction、animation-fill-mode，其表達的含義分別如下：（1）animation-name：定義動畫的名稱，必須要有@keyframes 定義，否則動畫無法調用。

（2）animation-duration：定義動畫完成一次的所用時間，單位為 s 或者 ms。

（3）animation-timing-function：定義動畫的速度曲線，包括 linear 、 ease 、 ease-in 、 ease-in-out 、ease-out-in 等。

（5）animation-iteration-count：定義動畫的重復次数，如果不設置，默認值是1次，也可以設置為 infinite 表示一直重復播放。

（6）animation-direction：定義動畫是否循環播放，还可以設置動畫在循環播放時重複播放的方向，其可選值包括 normal 、 alternate 。

（7）animation-fill-mode：定義動畫的完結態，如果你的動畫播放完以後，它的最後一帧的樣子會如何？可選值有 forward 、 backward 、 both 等。

animation屬性可以用來做很多有趣的圖形動畫，它使用也變得非常方便，只需定義一套參數，就能輕松地控制元素的動畫效果，提升頁面展示效果。

animation子元素模糊问题

动画在网页设计中扮演着至关重要的角色，它可以增添页面的吸引力，提高用户体验。

然而，有时在实现动画效果时，我们会遇到一些问题，其中之一就是animation子元素模糊。

下面将针对这一问题展开讨论。

1. 问题现象：在使用CSS3动画时，经常会遇到子元素模糊的情况，尤其是在动画过程中子元素的锯齿感明显，不仅影响视觉效果，也降低了用户的使用体验。

2. 问题原因2.1 浏览器渲染机制：一般而言，浏览器在渲染动画时都会对元素进行重绘和重排，而这个过程中往往会导致模糊的情况出现。

特别是在一些高分辨率的屏幕上表现得更加明显。

2.2 子元素定位：有时候子元素的定位会影响到动画效果，尤其是在使用transform属性时，可能会导致子元素模糊无法清晰显示。

3. 解决方法3.1 使用transform: translateZ(0)：这个方法可以触发硬件加速，让浏览器使用GPU来渲染动画，有效地解决了模糊的问题。

可以给子元素添加类似于transform: translateZ(0)的样式来解决模糊问题。

3.2 设置高分辨率图片：在一些高分辨率屏幕上，图片会因为缩放而显得模糊，因此可以使用高分辨率的图片，并通过媒体查询来指定不同的图片尺寸，以解决这一问题。

3.3 避免使用scale属性：在动画中如果使用了scale进行缩放操作，很容易导致模糊的情况发生，因此尽量避免使用这个属性，或者寻找其他替代方案。

4. 实际案例4.1 在网页中，某个图片元素在进行CSS3动画时出现了模糊的情况，经过分析发现是因为没有使用transform: translateZ(0)，添加该样式后问题得到了解决。

4.2 在另一个案例中，一些按钮在进行缩放动画时出现了模糊，经调查发现是因为使用了scale属性，将其替换为其他方法后，效果清晰。

5. 总结动画在网页设计中是非常常见且重要的一部分，但在实现动画效果时往往会遇到一些问题，比如animation子元素模糊问题。

animation instance原理

animation instance原理Animation instances are a key concept in computer animation that describe the specific representation of an animated object at a particular point in time. 动画实例是计算机动画中的一个关键概念，描述了在特定时间点上对动画对象的具体表示。

In simpler terms, an animation instance is a snapshot of an object's properties, such as position, rotation, and scale, that is used to render that object in a specific frame of an animation sequence. 简单来说，动画实例是一个对象属性的快照，如位置、旋转和缩放，用来在动画序列的特定帧中渲染该对象。

Understanding how animation instances work is crucial for animators and designers to create compelling and realistic animations. 了解动画实例的工作原理对于动画师和设计师创作出令人信服和逼真的动画至关重要。

By manipulating these instances over time, animators can create smooth movements, realistic interactions, and visually appealing sequences that captivate audiences. 通过随着时间对这些实例进行操作，动画师可以创造出流畅的运动、逼真的互动和吸引人的序列，从而吸引观众。

ais_animation使用方法

ais_animation使用方法
以下是对ais_animation使用方法的介绍：
1. 导入必要的库和模块：在使用ais_animation之前，需要先导入相关的库和模块。

具体导入的库和模块取决于所使用的编程语言和开发环境。

2. 创建动画对象：使用ais_animation时，需要创建一个动画对象。

创建动画对象的方式也取决于所使用的编程语言和开发环境。

一般来说，通过调用相应库或模块中的函数或方法来创建动画对象。

3. 配置动画属性：创建动画对象后，可以配置动画的各种属性，如动画的持续时间、播放速度、颜色、形状等。

这些属性的配置方式也取决于所使用的编程语言和开发环境。

4. 开始播放动画：配置完动画属性后，可以开始播放动画。

播放动画的方式也取决于所使用的编程语言和开发环境。

一般来说，通过调用动画对象的相关方法来开始播放动画。

5. 更新动画状态：在动画播放过程中，可能需要不断更新动画状态，以确保动画的正确播放。

更新动画状态的方式也取决于所使用的编程语言和开发环境。

一般来说，通过调用动画对象的相关方法来更新动画状态。

6. 结束播放动画：当动画播放完毕或需要停止播放时，可以结束播放动画。

结束播放动画的方式也取决于所使用的编程语言和开发环境。

一般来说，通过调用动画对象的相关方法来结束播放动画。

注意：以上使用方法仅供参考，具体使用方法还需根据所使用的编程语言和开发环境进行相应的调整和修改。

Android Animations的使用

android:pivotX="50" 使用绝对位置定位 android:pivotX="50%" 相对于控件本身定位 android:pivotX="50%p" 相对于控件的父控件定位
TweenedAnimations的使用
Translate的xml文件的编写方法
<translate android:fromXDelta="50%“ android:toXDelta="70%“ android:fromYDelta="0%“ android:toYDelta="80%" android:duration="3000"/>
在该标签中加入rotate、alpha、scale或者translate标签在代码中使用AnimationUtils装载xml文件，并生成 Animation对象
Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.rotate);
animationSet.setDuration(2000);animationSet.setStartOffset( 500);……
使用控件对象开始执行AnimationSet
imageView.startAnimation(animationSet);
Animations的高级使用部分——使用Interpolator
Animations的高级使用部分——使用Interpolator
代码中使用Interpolator的步骤：
创建AnimationSet对象
AnimationSet animationSet = new AnimationSet(true);

2019-2020学年哈密地区第二中学高三英语下学期期末试题及答案解析

2019-2020学年哈密地区第二中学高三英语下学期期末试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项ABored with your life? Dreaming of something different? I always wonder what life would be like400 kmabove my head. That's where the International Space Station orbits the earth, with six astronauts living and working on board, for months at a time.How do they sleep? They spend the night floating in a sleeping bag inside a small cubicle (小隔间) on the ceiling. American astronaut Sunita Williams explains, “It's like a little phone booth, but it's pretty comfortable and it doesn't matter if I turn overand sleep upside down. I don't have any sensation (感觉) in my head that tells me I'm upside down.”Brushing your teeth in a place where you can't have a tap or a sink can be a challenge. Can you imagine the mess that running water would make in zero gravity? Canadian astronaut Chris Hadfield uses a straw to put a big blob of water from a sealed bag onto an ordinary toothbrush and adds a little toothpaste which he has to swallow when he's done.Daily exercise is essential. The lack of gravity makes bones more fragile and muscles lose strength — so astronauts are encouraged to work out for at least two hours a day.The role of astronauts in the International Space Station is to act as lab technicians for scientists back on earth. So they spend their time maintaining their environment and performing and monitoring experiments in a confined space about the size of a Boeing 747. Almost every task is carefully planned by mission control — although most astronauts spend their first days losing things until they get used to sticking everything they use to the walls with Velcro, duct tape (强力胶带) or clips (夹子)．One of their most valued perks (额外待遇) is the view from “the office”, dominated by that gigantic blue ball down there, sitting in the darkness of space. Wow! Absolutely breathtaking!1. When they sleep upside down, the astronauts willnot get dizzy because ________.A. they don't feel itB. they sleep in the daytimeC. they sleep in special sleeping bagsD. they are trained to adapt to the conditions of weightlessness2. What parts become weak if astronauts don't exercise?A. Their teeth and bones.B. Their brains and bones.C. Their bones and muscles.D. Their teeth and muscles.3. What is the passage mainly about?A. The Problems We Met in Space.B. Living and Working in Space.C. How to Become an Astronaut.D. The International Space Station.BKids ages 6 to13 inCape Town,South Africa, really do dig learning at school! With the help of the Earthchild Project, which is offered in schools in two townships, students make worm(蠕虫) farms. The worms break down food waste and make the soil richer. Kids grow seedlings(幼苗) in containers and learn about the importance of good nutrition.The school program also offers yoga(瑜伽). Teachers find that the exercises help students focus better. The students enjoy Earthchild activities. “The children gets so excited”, says teacher Vuyelwa Rola.“The society we are in has a lot of noise. When students are taking part in the Earthchild Project, they feel calm.”Director Janna Kretzmar came up with the idea for the project in 2005. She read about schools inIndiathat involved kids in yoga and learning outside the classroom. She developed the Earthchild Project to offer similar activities inCape Townschools.“We hope the Earthchild Project can help students find solutions to all the challenges they are facing in the world today,” Kretzmar said. “The best place to create change is with the youth, through education.”The Earthchild Project combines schoolwork with hiking, gardening, healthy living, and yoga. “We need more than just math and science to become happy, healthy, inspired, and active citizens of our communities,” says Kretzmar. In some communities inCape Town, children live in poverty. They must walk long distances to get clean drinking water. Life is hard. But according to the Earthchild Project’s Carly Appleby, the project works to give hope to every child. “Students who have hope,” she says, “aim for bigger goals”.4. What do students benefit from yoga?A. It helps them calm down.B. It helps them concentrate.C. They can learn some living skills.D. They can learn about the importance of nutrition.5. What are students’ attitude towards the Earthchild Project?A. Uncaring.B. Doubtful.C. Supportive.D. Negative.6. What do you know about the Earthchild Project?A. It was founded in 2005.B. It only offers outside activities.C. The idea came up by Vuyelwa Rola.D. It is aimed at helping students find solutions to challenges.7. What’s the best title of the passage?A. Hard Life inSouth Africa.B. Students’ school life inCape Town.C. Hope from Earthchild Project inCape Town.D. The differences between traditional lessons and Earthchild Project.CLarry was on another of his underwater expeditions(探险)but this time, it was different. He decided to take his daughter along with him. She was only ten years old. This would be her first trip with her father on what he had always been famous for.Larry first began diving when he was his daughter’s age. Similarly, his father had taken him along on one of his expeditions. Since then, he had never looked back. Larry started out by renting diving suits from the small diving shop just along the shore. He had hated them. They were either too big or too small. Then, there was the instructor. He gave him a short lesson before allowing him into the water with his father. He had made an exception. Larry would never have been able to go down without at least five hours of theory and another similar number of hours on practical lessons with a guide. Children of his age were not even allowed to dive.After the first expedition, Larry’s later diving adventures only got better and better. There was never a dull moment. In his black and blue suit and with an oxygen tank fastened on his back, Larry dived from boats into the middle of the ocean. Dangerous areas did not prevent him from continuing his search. Sometimes, he was limitedto a cage underwater but that did not bother him. At least, he was still able to take photographs of the underwater creatures.Larry’s first expedition without his father was in the Cayman Islands. There were numerous diving spots in the area and Larry was determined to visit all of them .Fortunately for him, a man offered to take him around the different spots for rry didn’t even know what the time was, how many spots he dived into or how many photographs he had taken.The diving spots afforded such a wide range of fish and sea creatures that Larry saw more than thirty varieties of creatures.Larry looked at his daughter. She looked as excited as he had been when he was her age. He hoped she would be able to continue the family tradition. Already, she looked like she was much braver than had been then. This was the key to a successful underwater expedition.8. In what way was this expedition different for Larry?A. His daughter had grown up.B. He had become a famous diver.C. His father would dive with him.D. His daughter would dive with him.9. What can be inferred from Paragraph 2?A. Larry had some special right.B. Larry liked the rented diving suits.C. Divers had to buy diving equipment.D. Ten-year-old children were permitted to dive.10. What can be learned from the underlined sentence?A. Larry didn’t wear a watch.B. Larry was not good at math.C. Larry had a poor memory.D. Larry enjoyed the adventure.11. What did Larry expect his daughter to do?A. Become a successful diver.B. Make a good diving guide.C. Take a lot of photo underwater.D. Have longer hours of training.DFor fishermen and sailors in the seaside town of Shangpan in Linhai, Zhejiang province, where recently 12 stranded（搁浅的）whales were found, it is not unusual to spot whales or dolphins in the sea — they would always call them haizi, or “son of the ocean”. And if the local fishermen spot such intelligent sea creatures in need, they will save them from danger without hesitation.In the recent rescue of melon-headed whales, they tried their best to help as a 37-second video of a youngman sleeping in the water holding a whale soon went viral online, with netizens applauding his constant efforts and caring heart in trying to keep the whale alive. “The melon-headed whale knew I was trying to save it and would be more cooperative and wouldn’t move.” said Lu Wenhui, a 21-year-old diver from Hangzhou Changqiao Polar Ocean Park, who held up the whale’s head so it could breathe easily. Lu had been staying in the water for 10 hours by 4 a.m. Wednesday after coming for the rescue work on Tuesday, when the stranded whales were first spotted.“Whales are mammals and need to breathe in air — that’s why I had to hold its head, to ensure it could breathe smoothly the whole time,” Lu said. The stranded whales, after the struggling of being transported, were worn out when they arrived at the fish farm and might have drowned if they were left unattended.The reason why the whales were stranded is still not clear. And these stranded whales were returned to the ocean because they are not adapted to artificial breeding environments on land.12. What do local fishermen usually do after finding haizi in danger?A. Ignore them.B. Feed them.C. Transport them.D. Protect them.13. Why does the author describe Lu’s rescue work?A. To introduce the whales in detail.B. To voice his views on the diver.C. To praise the efforts made by rescuers.D. To explain the value of the whales.14. What can we say about the melon-headed whales according to the text?A. They are rarely seen by locals.B. They are used to breathing in the sea.C. They aren’t suited to artificial surroundings.D. They are fond of swimming near the seaside.15. Which of the following can be the best title for the text?A. Melon-headed Whales Were StrandedB. Rescuers Went All out to Help WhalesC. Fishermen Transported Stranded WhalesD. Witnesses Voiced Opinions on Rescue Work第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2021年宁海县前童镇高级中学高三英语期末考试试题及参考答案

2021年宁海县前童镇高级中学高三英语期末考试试题及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AFor some people, there’s no better companion than mans best friend-a dog. This four-legged pet can bring comfort and joy and provide much- needed exercise for you when it needs walkies! This probably explains why dog ownership increased last year because people spent more time at home during he CovID-I9 lockdown.However, as demand for a new dog increased, so did the price tag. Popular breeds, such as Cockapoos and Cocker Spaniels, saw even sharper price increases, and puppies have been selling for $3,000 or more.Animal welfare charities fearthat high prices could encourage puppy farming, smuggling (走私) or dog theft. An investigation found some breeders have been selling puppies and kittens on social media sites--something charities have called “extremely irresponsible”.But despite some new owners purchasing a dog legally, maybe from a rescue center or registered breeder, they’ve proved to be ill-prepared for life with a new pet, and the pet itself has found it hard tocome to terms withlife in a new home.Looking to the future, there are concerns about the welfare of these much-loved pets. Lan Alkin manager of the Oxfordshire Animal Sanct uary in the UK, notes: “At the moment, the dogs are having a great time, but separation anxiety could still surface when people go back to work.” And Cliare Calder from the UKs Dogs Trust rescue charity says, “The economic situation also means that some people may find they can’t afford to look aftera dog.” The message is not to buy a dog in haste and to pick one that fits into our lifestyle.1. The greater demand for dogs can cause the following problems except ________.A. illegal trade of dogsB. less dog farmingC. high prices of dogsD. online sale of dogs2. What does the underlined phrase"come to terms with"in paragraph 4 mean?A. Fit in withB. Go in forC. Make up for.D. End up with3. What can we learn from the last paragraph?A. Despite the problems, dogs are living happily.B. The writer has a positive attitude towards dogs future.C. Experts are worried that dogs will be unaffordable to people.D. The writer advises people to think twice before keeping dogs as pets.BA trip to thelibrary was like a great journey to a different country. To get there, we had to walk a mile. But our weekly journeys to the library were a piece of perfection. I had around me at one time all the people I loved best-my father and mother and brothers and sister--and all the things I loved best- quiet, space and books.I read a lot of books about science: not the spaceships my brothers preferred, but the birds and the bees--literally. I brought home a book of birds and searched the trees for anything other than robins (知更鸟). I went through a phrase of loving books with practical science experiments and used up a whole bottle of white vinegar by pouring it on the sides of our apartment building to prove that it was constructed of limestone (石灰石).One Saturday, as I wandered through the young adult section, I saw a title: Little Women, by Lousia May Alcott. I had learned from experience that titles weren’t everything. A book that sounded great on the shelf could be dull once you got it home. So I sat in a chair near the shelves to skim the first paragraphs.I read and read and read Little Women until it was time to walk home, and, except for a few essential interruptions like sleeping and eating, I did not put it down until the end. Even the freedom to watch weekend television held no appeal for me in the wake of Alcott' s story. It was about girls, for one thing, girls who could almost be like me, especially Jo. I had found someone who thought and felt the way I did.4. What can we say about the author’s family?A. They enjoyed traveling abroad.B. They were library frequenters.C. They were very fond of walking.D. They led a perfectly quiet life.5. What does the author mainly want to show in paragraph 2?A. Her different hobbies from her brothers.B. How she conducted science experiments.C. Why she loved books about the birds and the bees.D. Her reading interests during a particular period of time.6. What opinion does the author hold on books?A. Book titles can sometimes be misleading.B. Science books are as interesting as novels.C. The first few paragraphs of a book are attractive.D. Books seem duller when read in libraries than at home.7. How would the author describe Little Women?A. It helped her to discover her true character.B. It made her forget about food and sleep.C. It inspired confidence in her.D. It kept her absorbed.CRichard Campbell is a secondary school student. He is15 years old. He lives in a small town in the north ofEngland. Every morning, he gets up at eight o’clock, puts on his uniform and walks to school.One hour later, the lessons start. The students usually study maths, English, history and geography in the morning. They usually study music and drawing and they play sports after lunch. They have a ten-minute break between classes. They also spend a long time in the school library, reading books and doing their homework.Richard likes his school very much. His favourite subjects are English and geography, but he doesn’t like maths because he is not good at it.Richard and all his friends spend the whole day at school. Lunch is at one o’clock. He doesn’t like the food that the school serves. This is why he often brings a packed lunch from home. He always has his lunch in the dining hall, but some of his friends sometimes eat in the courtyard or outside the school gate.At weekends, he always goes out with his friends because he doesn’t go to school. On Saturday, he always goes to the cinema or to the sports centre. On Sunday, he just goes for a walk with his dog.8. What time do Richard’s lessons begin in the morning?A. At 8:00.B. At 8:30.C. At 9:00.D. At 9:10.9. What does Richard like best?A. Maths and English.B. English and geography.C. History and maths.D. Geography and history.10. Where does Richard have lunch on weekdays?A. In the dining hall.B. At home.C. In the courtyard.D. Outside his school gate.11. What does Richard always do on Saturday?A. He reads and does homework.B. He goes to see films or does sports.C. He walks his dog or does exercise.D. He spends a long time in the library.DPoaching and habitat loss have threatened Africa's two species of elephants, taking them closer toward the edge of disappearance, according to a new report released by the International Union for Conservation of Nature(IUCN).Before this update, Africa's elephants were grouped together and were evaluated as vulnerable by the IUCN. This is the first time the two species have been sorted separately. In the past, elephants were mostly considered as either Asian elephants or African elephants. Forest and savanna elephants were typically classified as subspecies of African elephants.The African forest elephant is now listed as critically endangered and the African savanna elephant as endangered. The number of African forest elephants fell by more than 86% over a 31 -year assessment period. The population of African savanna elephants dropped by at least 60% over the last 50 years, according to the IUCN, which tracks the assessment risk of the world's animals. Africa currently has an estimated 415,000 elephants, counting the two species together.Both elephant species experienced significant population decreases because of poaching. Although it peaked in 2011, illegal hunting still happens and continues to threaten elephant populations. African elephants also face continued habitat loss as their land isconvertedfor agriculture or other uses.There is some good conservation news, the IUCN points out. Anti-poaching measures, combined with better land use planning to support better human-wildlife relationships, have helped conservation efforts. Some forest elephant population figures have stabilized in well-managed areas in Gabon and the Republic of Congo and savanna population figures have remained stable or have been growing, particularly in the Kavango-Zambezi Transfrontier Conservation Area in southern Africa.But with constant demand for ivory and increasing human pressures on Africa's wild lands, concern for Africa's elephants is high, and the need to creatively conserve and wisely manage these animals and their habitats is more severe than ever.12. What can be inferred from the new report about African elephants?A. They are divided into three kinds.B. They are dying out.C. Their threat is mainly from poaching.D. Their population has grown in Africa.13. What does the author mainly tell us in Paragraph 3?A. The detailed number of African elephants.B. The similarities of African elephants.C. The different types of African elephants.D. The present situation of African elephants.14. What does the underlined word "converted" in Paragraph 4 probably mean?A. Expanded.B. Protected.C. Transformed.D. Forbidden.15. What's the authors attitude to the present situation of African elephants?A. Hopeless.B. Optimistic.C. Uncertain.D. Worried.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2020届江苏省苏州中学高三英语上学期期末考试试卷及参考答案

2020届江苏省苏州中学高三英语上学期期末考试试卷及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AAs a nation, we are getting bigger and eating more. But there are effective ways to control your appetite and eat only as much as you need.Keep away from low-nutrition snacksThat means ice cream, sweets, chips biscuits, cakes and any other salty orsugary snacks you eat between meals. Although we have a tendency to eat them, you can learn to live without these unhealthy-and-fattening-additions to your diet. Try to make it a habit to eat them only when offered at social events or as a special treat.Leave half an hour between main course and dessertHaving a break between courses gives your brain time to receive the fullness signal and make you more likely to refuse the sweet stuff. And, in fact, as soon as you feel the first signals of fullness, remove your plate from the table. That will tell your brain that food time is over.Make yours a small helpingPut an end to super-sized portions. You won’t be missing out—today’s small was the medium or large of a few decade ago. Select or serve yourself a modest portion and eat it slowly enjoying the flavors. Before you know it, small will feel just right. What’s more, ordering the smaller size leads to wearing the smaller size.Distract yourselfWhen you find yourself hunting down food, even though you’re even hungry, do something else for 20 minutes. Drink a large glass of water as thirst is often confused with a desire for food. Choose something that engages your brain as well as your hands, such as writing a letter or listening to a song. You could also go for a short walk or do something that you enjoy. If you think you really are hungry, set an alarm for 20 minutes’ time and if you still want to eat when it rings, fine. If not, the urge will have passed.1. Which way suits you better if you tend to order a large portion of food?A. Distract yourself.B. Make yours a small helping.C. Keep away from low-nutrition snacks.D. Leave half an hour between main course and dessert.2. Why should you have a break between main course and dessert?A. To give people time to chat.B. To have a good appetite for sweet stuff.C. To reduce appetite for dessert.D. To give the host time to remove your plate.3. When you find yourself pursuing for food, what should you do?A. Eat some biscuits.B. Eat some sugary snacks.C. Have some soft drinks.D. Listen to a lovely melody.BAs every mobile-phone owner knows, after a year or so the battery starts to fade and the beast needs recharging more frequently.That is troublesome, but a phone’s batteries can be replaced fairly cheaply — or the whole device traded in for the latest model. An electric car, though, is a much bigger investment. And batteries are its priciest component, representing around 30% of an average mid-size vehicle.To provide buyers with some peace of mind, carmakers guarantee their batteries, typically for eight years or around 200,000km. Producers, planning to go much further than that, though, are racing to launch “million mile”(1.6m kilometers) batteries. Contemporary Amperex Technology, a giant Chinese firm which produces batteries fora number of carmakers, was said to be ready to start producing batteries which would last for 16 years or 2m kilometres. Elon Musk has suggested that Tesla,a Californian maker of electric vehicles, has a million-mile battery in the works. And over in Detroit,General Motors is in the final stages of developing an advanced battery which it says has similar longevity (寿命)。

Adobe Acrobat SDK 开发者指南说明书

Please remember that existing artwork or images that you may want to include in your project may be protected under copyright law. The unauthorized incorporation of such material into your new work could be a violation of the rights of the copyright owner. Please be sure to obtain any permission required from the copyright owner.
This guide is governed by the Adobe Acrobat SDK License Agreement and may be used or copied only in accordance with the terms of this agreement. Except as permitted by any such agreement, no part of this guide may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Adobe. Please note that the content in this guide is protected under copyright law.

iOS核心动画详解（CABasicAnimation）

iOS核⼼动画详解（CABasicAnimation）前⾔上⼀篇已经介绍了核⼼动画在UI渲染中的位置和基本概念，但是没有具体介绍CAAnimation⼦类的⽤法，本⽂将介绍CABasicAnimation及其⼦类CASpringAnimation 的⽤法和⼀些注意事项。

⼀、CABasicAnimation1.什么是CABasicAnimation CABasicAnimation是核⼼动画类簇中的⼀个类，其⽗类是CAPropertyAnimation，其⼦类是CASpringAnimation，它的祖⽗是CAAnimation。

它主要⽤于制作⽐较单⼀的动画，例如，平移、缩放、旋转、颜⾊渐变、边框的值的变化等，也就是将layer的某个属性值从⼀个值到另⼀个值的变化。

类似x -> y这种变化，然⽽对于x -> y -> z 甚⾄更多的变化是不⾏的。

2.常⽤属性 @property(nullable, strong) id fromValue; @property(nullable, strong) id toValue; @property(nullable, strong) id byValue; 很明显，fromvalue表⽰初始状态，tovalue表⽰最终状态，byvalue是在fromvalue的基础上发⽣的变化，这个可以慢慢测试，主要还是from和to。

3.实例化⽅法 + (instancetype)animationWithKeyPath:(nullable NSString *)path; 下⾯是对keypath⽐较全⾯的总结，每个keypath对应⼀种属性值的变化，其中涉及到颜⾊变化的都必须使⽤CGColor，因为对应是对layer的属性。

1 #ifndef AnimationKeyPathName_h2#define AnimationKeyPathName_h3#import <Foundation/Foundation.h>4/* CATransform3D Key Paths */5/* 旋转x,y,z分别是绕x,y,z轴旋转 */6static NSString *kCARotation = @"transform.rotation";7static NSString *kCARotationX = @"transform.rotation.x";8static NSString *kCARotationY = @"transform.rotation.y";9static NSString *kCARotationZ = @"transform.rotation.z";1011/* 缩放x,y,z分别是对x,y,z⽅向进⾏缩放 */12static NSString *kCAScale = @"transform.scale";13static NSString *kCAScaleX = @"transform.scale.x";14static NSString *kCAScaleY = @"transform.scale.y";15static NSString *kCAScaleZ = @"transform.scale.z";1617/* 平移x,y,z同上 */18static NSString *kCATranslation = @"transform.translation";19static NSString *kCATranslationX = @"transform.translation.x";20static NSString *kCATranslationY = @"transform.translation.y";21static NSString *kCATranslationZ = @"transform.translation.z";2223/* 平⾯ */24/* CGPoint中⼼点改变位置，针对平⾯ */25static NSString *kCAPosition = @"position";26static NSString *kCAPositionX = @"position.x";27static NSString *kCAPositionY = @"position.y";2829/* CGRect */30static NSString *kCABoundsSize = @"bounds.size";31static NSString *kCABoundsSizeW = @"bounds.size.width";32static NSString *kCABoundsSizeH = @"bounds.size.height";33static NSString *kCABoundsOriginX = @"bounds.origin.x";34static NSString *kCABoundsOriginY = @"bounds.origin.y";3536/* 透明度 */37static NSString *kCAOpacity = @"opacity";38/* 背景⾊ */39static NSString *kCABackgroundColor = @"backgroundColor";40/* 圆⾓ */41static NSString *kCACornerRadius = @"cornerRadius";42/* 边框 */43static NSString *kCABorderWidth = @"borderWidth";44/* 阴影颜⾊ */45static NSString *kCAShadowColor = @"shadowColor";46/* 偏移量CGSize */47static NSString *kCAShadowOffset = @"shadowOffset";48/* 阴影透明度 */49static NSString *kCAShadowOpacity = @"shadowOpacity";50/* 阴影圆⾓ */51static NSString *kCAShadowRadius = @"shadowRadius";52#endif /* AnimationKeyPathName_h */4.简单⽤法下⾯的类是⽤来测试不同keypath对应的动画，有些省略了，因为原理都是⼀样的。

animation 手册

animation 手册一、引言Animation，即动画，是一种视觉表现形式，通过连续播放一系列静止的画面，产生动态的效果。

动画广泛应用于电影、电视、游戏、广告等多个领域，为观众带来视觉上的享受和情感的共鸣。

二、动画原理动画的制作原理主要基于视觉暂留现象，即人眼在短时间内对连续播放的静态画面产生动态效果的感知。

通过在一段时间内快速播放一系列静止的画面，人眼将看到连续的动作或场景，从而产生动画效果。

三、动画制作流程1.故事板：制作动画的第一步是编写故事板，即绘制一系列静态画面，描述故事情节和角色动作。

故事板是动画制作的蓝图，为后续制作提供指导。

2.角色设计：根据故事板，设计角色形象。

角色设计包括角色的外貌、服装、发型等，以突出角色的个性和特点。

3.场景设计：根据故事情节，设计动画场景。

场景设计包括背景、道具、灯光等，以营造故事氛围和场景效果。

4.原画绘制：原画师根据故事板和角色设计，绘制动画的原画。

原画是动画的基础，决定着动画的视觉效果和表现力。

5.动画制作：动画师根据原画和场景设计，制作动画。

动画师通过逐帧绘制或使用计算机软件制作动画，使角色和场景动起来。

6.音效制作：音效师根据故事情节和动画效果，制作音效。

音效包括背景音乐、角色对话、动作音效等，为动画增添情感和气氛。

7.合成与后期处理：将动画、音效、特效等元素合成在一起，进行后期处理。

后期处理包括色彩校正、特效添加、画面调整等，使动画更加生动和精美。

四、动画类型1.传统手绘动画：通过手工绘制每一帧画面来制作动画。

传统手绘动画具有独特的艺术风格和表现力，但制作周期长且成本高。

2.计算机动画：使用计算机软件制作动画。

计算机动画具有制作周期短、成本低、表现力丰富等优点，广泛应用于电影、电视、游戏等领域。

3.定格动画：通过拍摄一系列静止的实物或模型来制作动画。

定格动画具有独特的视觉效果和表现力，但制作难度较大。

4.混合媒体动画：结合多种媒介材料和技术手段制作的动画。