Sure you can animate using motion tweens, in fact we'll help you do that with our Flash Cartoon Animation book, but isn't there something extra special in making things move with just a few lines of code?
In this book Keith Peters guides us through some basic animation theory and then demystifies the math and physics behind creating realistic animation, looking at trigonometry, velocity and acceleration, and bouncing & friction.
This book will teach you how to use Flash ActionScript to move the objects in your movies, rather than letting Flash's tween engine do it for you. The benefit of this is smaller, more realistic, more dynamic interactive movies that seem to come alive on your screen. Almost all of the code featured in this book will work fine in either Flash MX 2004 or Flash 8, and with a few minor adjustments, most of it can even be applied to Flash MX.
Although the text covers many advanced math and physics concepts, making for very realistic motion, there's no need to worry, even if you're a relative newcomer to programming and the last math class you took was in high school (and even if you barely remember that!).
This book first covers everything you need to know to get started: the principles of animation, and the basics of ActionScript, trigonometry, and Flash rendering methods. You'll work your way slowly from using code to move a single object across the screen to creating complex systems that really push Flash's capabilities with topics covered including collision detection, particle attraction, and kinematics. The book concludes with looking at 3D animation techniques, including building a basic 3D engine, 3D lines, fills and solids, and matrix math.
Once you come to grips with the ideas presented here, you'll find yourself creating all manner of exciting animations and games!
Keith Peters lives in the vicinity of Boston, MA, in the US with his wife, Kazumi, and their daughter, Kristine. He has been working with Flash since 1999, and has coauthored many books for friends of ED, including the groundbreaking volumes, Flash Math Creativity and Extending Flash MX 2004.The site recently won an award at the Flashforward 2003 Flash Film Festival in the Experimental category. In addition to the experiments on this site, Keith has produced several highly regarded Flash tutorials that have been translated into many languages and are now posted on websites throughout the world. Keith is currently working full time on Flash development and various writing projects.
Keith's other books include: Flash MX Studio, Fresh Flash: New Design Ideas with Flash MX, Byte-Size Flash MX, Flash MX Most Wanted, Flash MX Games Most Wanted, and New Masters of Flash: Volume 3
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这本《深入理解JavaScript核心概念》简直是前端开发者的福音。我之前总是觉得JavaScript的闭包、原型链这些“底层”的东西很玄乎,看书也看得一知半解。但是这本书不一样,它用极其生动的比喻和清晰的代码示例,把那些抽象的概念掰开了揉碎了讲。比如,它讲到事件循环时,简直就像在看一部精彩的舞台剧,Node.js和浏览器环境下的宏任务、微任务如何调度,看得我茅塞顿开。特别是关于内存管理和垃圾回收的那几章,作者并没有停留在理论层面,而是深入到了V8引擎的运作机制,让我明白了为什么有些代码写起来性能更好,而有些地方就是容易造成内存泄漏。读完之后,我不仅能写出更健壮的代码,更重要的是,我对JavaScript这门语言的敬畏之心又加深了一层。它不仅仅是一本技术手册,更像是一份邀请函,邀请你进入JS世界的深层结构去探索。我感觉自己像是从一个只会在表面划水的游泳者,一下子掌握了潜水服和氧气瓶,准备去探索更深的海域了。那种“原来如此”的顿悟感,是其他技术书籍很难给予的体验。
评分如果要评选一本最能让我感到“温暖”的编程书,那非《设计模式与面向对象思维重塑》莫属了。很多设计模式的书籍,冷冰冰地罗列着UML图和接口定义,让人觉得这些模式高高在上,不接地气。然而,这本书的叙事方式非常独特,它没有直接抛出“工厂模式”或“观察者模式”,而是先描述一个在真实开发中遇到的混乱场景,然后引出哪种设计思想可以优雅地解决这个问题。它强调的是“为什么需要它”,而不是“它长什么样”。通过大量类比,比如用乐高积木来解释组合优于继承,用流水线作业来解释策略模式,使得原本晦涩的理论变得亲切易懂。这本书的重点不在于让你记住所有二十三条经典模式,而在于培养你那种面向对象的“直觉”。我现在写代码时,总会不自觉地去思考“这个类应该承担什么职责”,这种思维的转变,比学会任何一种具体语法都更加宝贵。它让我对代码的结构和长期维护性有了全新的敬畏。
评分《现代Web性能优化实战指南》这本书,绝对是为那些被“加载速度”折磨得焦头烂额的工程师准备的良药。我手上的项目之前在移动端表现不佳,各种性能指标都不理想,尝试了很多网上零散的技巧,效果时好时坏。直到我读了这本书,才明白性能优化是一个系统工程,绝不是简单地压缩几张图片就能解决的。作者的思路非常全面,从构建工具的配置(比如Webpack的Tree Shaking和Code Splitting的深度应用),到服务端渲染(SSR)和静态站点生成(SSG)的权衡选择,再到网络传输层的优化,每一步都有详实的数据支撑和可复现的案例。我尤其喜欢它对Lighthouse报告的深度解读,它不是简单地告诉你“分数低了要怎么做”,而是教你如何像审计师一样去分析瓶颈所在。读完这本书,我立即着手对旧代码进行了重构,特别是对首屏加载的资源优先级调整,效果立竿见影。这本书的价值在于它的实用性和前瞻性,它让你从一个“救火队员”转变为一个“性能架构师”。
评分《数据可视化:从入门到精通(基于D3.js进阶应用)》这本书,对于我这样偏爱数据分析却苦于无法清晰表达结果的人来说,简直就是一剂强心针。我以前做报告,图表总是很呆板,信息密度低,听众看一眼就走神了。这本书从最基础的SVG和Canvas原理讲起,但这部分很快就跳过去了,重点放在了如何用D3来构建具有叙事性的图表。作者对色彩理论、布局算法(比如力导向图的调整)的讲解非常细致,甚至连用户交互反馈的平滑过渡动画都给出了完整的代码实现。我尝试着根据书中的指引,将一个复杂的金融时间序列数据,用一个具有缩放和平移功能的交互式仪表盘展示出来,同事们都惊叹于其专业度。这本书的强大之处在于,它不仅教你画图,更教你如何“讲故事”——如何通过视觉语言引导观众的注意力,从而有效地传达核心信息。它将一门技术技能提升到了艺术表达的层面,非常令人印象出乎意料的深度。
评分我对《后端服务的高可用架构实践》的评价是:它是一份写给运维和架构师的“避坑指南”,但对于想深入了解企业级应用稳定性的初级工程师来说,同样价值连城。这本书的特点是极其务实,充满了实战经验的沉淀。它不像某些理论书籍那样讨论理想化的环境,而是直接面对“集群宕机”、“数据库主从延迟”、“熔断降级失败”等真实场景。我记得有一章专门讨论了分布式锁的各种实现方案(Redis、ZooKeeper等)的优缺点和适用边界,分析得比官方文档还透彻,甚至提到了某些知名开源组件在特定高并发场景下的潜在陷阱。读完这本书,我不再满足于把服务部署起来,而是开始思考如何设计一个能够“自愈”的服务。作者的语言风格沉稳老练,不卖弄花哨的技术名词,而是专注于如何用最可靠的手段构建一个能抗住黑天鹅事件的系统。这本书让我对“健壮性”有了更深刻的理解,它教你如何未雨绸缪,让你的系统在面对压力时不至于手忙脚乱。
评分读了一半as2版本,as3版本的还没读 我做的读书笔记: http://www.nshen.net/blog/article.asp?id=450 http://www.nshen.net/blog/article.asp?id=451 后边的自己搜吧
评分读了一半as2版本,as3版本的还没读 我做的读书笔记: http://www.nshen.net/blog/article.asp?id=450 http://www.nshen.net/blog/article.asp?id=451 后边的自己搜吧
评分读了一半as2版本,as3版本的还没读 我做的读书笔记: http://www.nshen.net/blog/article.asp?id=450 http://www.nshen.net/blog/article.asp?id=451 后边的自己搜吧
评分读了一半as2版本,as3版本的还没读 我做的读书笔记: http://www.nshen.net/blog/article.asp?id=450 http://www.nshen.net/blog/article.asp?id=451 后边的自己搜吧
评分读了一半as2版本,as3版本的还没读 我做的读书笔记: http://www.nshen.net/blog/article.asp?id=450 http://www.nshen.net/blog/article.asp?id=451 后边的自己搜吧
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