利用TweenMax針對HTML頁面製作動畫 – 基礎篇
馬老師在前一篇文章介紹過GreenSock的Tweening Platform在Flash中的應用後,接下來要跟各位分享「GreenSock Animation Platform」(GSAP),那麼多英文聽起來好像很複雜,就讓我為各位簡單介紹一下吧!
首先GreenSock一開始真的是針對Flash的Tween(補間)寫了許多好用的Class供設計師們使用,在不斷的更新和強化之後,目前已經出到v11(第十一版)了,但只要熟悉網路平台的朋友應該都知道,近幾年Flash在網頁上的應用,除了遊戲之外正在減少中,所以在GreenSock的v12(第十二版)中,加入了JavaScript的Class,也就是說我們可以在HTML網頁中使用TweenLite或TweenMax…等來製作動畫,也藉此版本把發展計劃的名稱從「GreenSock Tweening Platform」(GreenSock補間平台)更名為「GreenSock Animation Platform」(GreenSock動畫平台),主要是把「Tweening」換成「Animation 」,因為前者主要為Flash在使用的名詞,而後者就屬於比較廣義的「動畫」,所以未來就算你還在使用Flash的TweenMax,他也是屬於「GreenSock Animation Platform」中的一員了。
在網頁上GreenSock目前提供使用的有「TweenLite」、「TweenMax」、「TimelineLite」、「TimelineMax」這四個項目,雖比Flash來的少,不過也是最常用的幾項,相信可以幫助設計師們在不使用Flash的情形之下,製作許多不同凡響的動畫效果,另外關於這四項的差別也跟Flash版本一樣,之前有介紹過在這邊就不多提了,接下來就看一下簡單的使用方式吧。
首先跟Flash版本一樣,必須先下載(備用載點)JS的Class,下載解壓縮後,會有以下的資料夾:
- docs:參考文件。
- examples:裡面有很多html的展示,對於想要了解本Class非常有幫助。
- src:主要Class資料夾。
在網頁上主要使用的資料夾為src,而若是網頁要使用這個Class,跟Flash需要先import,不過HTML的指令如下:
<script src="src/minified/TweenMax.min.js"></script>
接下來就開始針對HTML和Javascript進行編輯,先看看我製作的第一個範例,下面是本範例整個網頁的程式碼:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>GreenSock HTML Tweening Basic</title> <script src="src/minified/TweenMax.min.js"></script> <script language="javascript"> function scaleSmall() { var photo = document.getElementById("cat"); TweenMax.to(photo, 2, { width: 300, height: 200 }); } </script> </head> <body style="font-size:13px; background-color:#FFF"> <p style="text-align:center"><img src="cat.jpg" alt="波妞 大頭照" name="cat" width="600" height="400" id="cat" onClick="scaleSmall()"></p> <p style="text-align:center">請點擊貓咪照片</p> </body> </html>
基本上就是點擊後圖片縮小的效果,第10行即為TweenMax製作動畫的程式,當然利用TweenMax製作動畫,其中動畫類型也是重要的參數,第二個案例就加上了動畫類型,大家可以參考動畫變化的形式,下面是本範例整個網頁的程式碼:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>GreenSock HTMLTweening ease</title> <script src="src/minified/TweenMax.min.js"></script> <script language="javascript"> function scaleSmall() { var photo = document.getElementById("cat"); TweenMax.to(photo, 2, { width: 300, height: 200, ease: Elastic.easeOut }); } </script> </head> <body style="font-size:13px; background-color:#FFF"> <p style="text-align:center"><img src="cat.jpg" alt="波妞 大頭照" name="cat" width="600" height="400" id="cat" onClick="scaleSmall()"></p> <p style="text-align:center">請點擊貓咪照片</p> </body> </html>
除此之外,動畫變化的大小,當然也可以利用比例來計算,第三個範例就是用圖片寬度和高度比例來進行動畫縮小,各位也可以參考,下面是本範例整個網頁的程式碼:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>GreenSock HTMLTweening ease</title> <script src="src/minified/TweenMax.min.js"></script> <script language="javascript"> function scaleSmall() { var photo = document.getElementById("cat"); TweenMax.to(photo, 2, { width: photo.width * 0.8, height: photo.height * 0.8, ease: Elastic.easeOut }); } </script> </head> <body style="font-size:13px; background-color:#FFF"> <p style="text-align:center"><img src="cat.jpg" alt="波妞 大頭照" name="cat" width="600" height="400" id="cat" onClick="scaleSmall()"></p> <p style="text-align:center">請連續點擊貓咪照片</p> </body> </html>
當然在原先TweenMax可以使用的參數「onStart」、「onUpdate」、「onComplete」也一樣可以使用,第四個範例就加上了這部分的程式碼,下面是本範例整個網頁的程式碼:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>GreenSock HTMLTweening onCompleteSock HTMLTweening onComplete</title> <script src="src/minified/TweenMax.min.js"></script> <script language="javascript"> function scaleSmall() { var photo = document.getElementById("cat"); TweenMax.to(photo, 2, { width: 300, height: 200, ease: Elastic.easeOut, onComplete: okFn }); } function okFn() { alert("動畫執行完畢"); } </script> </head> <body style="font-size:13px; background-color:#FFF"> <p style="text-align:center"><img src="cat.jpg" alt="波妞 大頭照" name="cat" width="600" height="400" id="cat" onClick="scaleSmall()"></p> <p style="text-align:center">請點擊貓咪照片</p> </body> </html>
看完了以上的範例,大家對於TweenMax在網頁中的使用應該有基本的認識,當然接下來就要看你的創意和HTML、Javascript、CSS的操作能力了,在這邊也製作一個較完整的範例供大家參考,下面是本範例整個網頁的程式碼:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>GreenSock HTMLTweening Sample 1</title> <style type="text/css"> #yahoo { height: 240px; width: 560px; margin-right: auto; margin-left: auto; overflow: hidden; } /* yahoo Div 樣式(最外層) */ #yahoo #pic { height: 210px; width: 2240px; overflow: hidden; left: 0px; position: relative; } /* 放置圖片Div樣式 */ #yahoo #btn { text-align: right; float: left; height: 30px; width: 560px; } /* 下方文字連結Div */ #yahoo #btn a { margin-left: 5px; padding-top: 2px; padding-right: 4px; padding-bottom: 2px; padding-left: 4px; } /* 下方文字連結樣式 */ </style> <script src="src/minified/TweenMax.min.js"></script> <script language="javascript"> function moveFn(no) { var banner = document.getElementById("pic"); TweenMax.to(banner, 1, { css: { left: (no - 1) * -560 }, ease: Quad.easeInOut }); } </script> </head> <body style="font-size:13px; background-color:#FFF"> <div id="yahoo"> <div id="pic"><img src="yahoo/y1.jpg" id="p1" width="560" height="210"><img src="yahoo/y2.jpg" width="560" height="210"><img src="yahoo/y3.jpg" width="560" height="210"><img src="yahoo/y4.jpg" width="560" height="210"></div> <div id="btn"><a href="javascript:;" onClick="moveFn(1)">1</a><a href="javascript:;" onClick="moveFn(2)">2</a><a href="javascript:;" onClick="moveFn(3)">3</a><a href="javascript:;" onClick="moveFn(4)">4</a></div> </div> </body> </html>
在網頁上有TweenMax協助我們製作動畫,我們更可以把心思放在排版、樣式和內容上面,省去了撰寫計算動畫程式的時間,希望大家可以利用它做出很棒的作品!最後附上本範例的原始檔給大家參考。
india pharmacy mail order: cheapest online pharmacy india – pharmacy website india indiapharm.llc
reputable mexican pharmacies online: Best pharmacy in Mexico – mexican rx online mexicopharm.com
best india pharmacy: Medicines from India to USA online – indian pharmacy online indiapharm.llc
You really make it seem so easy with your presentation but I find this topic to be actually something that I think I would never understand.
It seems too complex and very broad for me.
I’m looking forward for your next post, I will try to get the
hang of it!
Also visit my blog; blw99 (Carmen)
mail order pharmacy india: India Post sending medicines to USA – indianpharmacy com indiapharm.llc
http://indiapharm.llc/# india pharmacy indiapharm.llc
reputable mexican pharmacies online: mexican pharmacy – medication from mexico pharmacy mexicopharm.com
canadian drugs: Canadian pharmacy best prices – best canadian online pharmacy canadapharm.life
canadian online pharmacy Cheapest drug prices Canada www canadianonlinepharmacy canadapharm.life
india pharmacy mail order: indian pharmacy to usa – indian pharmacies safe indiapharm.llc
indian pharmacies safe: top 10 pharmacies in india – india pharmacy indiapharm.llc
indian pharmacies safe: Medicines from India to USA online – india online pharmacy indiapharm.llc
http://canadapharm.life/# safe canadian pharmacies canadapharm.life
canadian pharmacy antibiotics: Canadian pharmacy best prices – online pharmacy canada canadapharm.life
mexican online pharmacies prescription drugs Best pharmacy in Mexico purple pharmacy mexico price list mexicopharm.com
india pharmacy mail order: India pharmacy of the world – indianpharmacy com indiapharm.llc
pharmacies in mexico that ship to usa: Best pharmacy in Mexico – pharmacies in mexico that ship to usa mexicopharm.com
doxycycline hyclate: doxycycline hyc 100mg – buy doxycycline online uk
Hello! This is kind of off topic but I need some help
from an established blog. Is it difficult to set up your own blog?
I’m not very techincal but I can figure things out pretty fast.
I’m thinking about creating my own but I’m not
sure where to start. Do you have any points or suggestions?
Thanks
Also visit my web-site: blw99 (Blythe)
https://zithromaxbestprice.icu/# how to get zithromax over the counter
tamoxifen endometriosis: tamoxifen benefits – tamoxifen cyp2d6
lisinopril 10 mg daily: lisinopril in india – lisinopril 2
buy cytotec in usa purchase cytotec buy cytotec
benefits of tamoxifen: tamoxifen cyp2d6 – cost of tamoxifen
Witth havin so much written content do you eer run intro any
ssues oof plagorism or copyrightt infringement?
My bllog hhas a lot oof completepy unique content I’ve eitrher wriitten mysedlf orr outsourced
buut iit loks like a lot off itt iss popping it up alll over
thee intrnet without mmy authorization. Do you knoww anny methopds tto hel protect
aagainst content from beingg stolen? I’d definiteely appreciate it.
buy cytotec over the counter: buy cytotec over the counter – buy cytotec online
https://nolvadex.fun/# generic tamoxifen
Misoprostol 200 mg buy online: buy cytotec over the counter – Misoprostol 200 mg buy online
doxycycline medication buy doxycycline hyclate 100mg without a rx doxycycline generic
where to purchase doxycycline: doxycycline 500mg – doxycycline mono