目前flash矢量图形到html5的转换，一般有两种方式： 1.转换为位图，例如：png，jpg。 2.转换为html5支持的矢量格式，例如：svg或canvas矢量绘图命令。 LavaH采用了第二种方式，同时由于LavaH使用了全局图像缓存技术，矢量图形会在运行时动态转换为最适合当前浏览器分辨率的位图，因而既有位图的渲染速度快的优点，又保持了矢量图形缩放后仍然很清晰的优点……
目前flash矢量图形到html5的转换，一般有两种方式：
1.转换为位图，例如：png，jpg。
2.转换为html5支持的矢量格式，例如：svg或canvas矢量绘图命令。
方式1渲染速度快，但是无法自适应各种屏幕分辨率，如果按大屏分辨率保存矢量图形，则占用空间大，如果按小屏分辨率保存矢量图形，则在大屏上浏览时，图形模糊或者马赛克效应严重。如果一个矢量图形在游戏中有缩放行为，由于图像是按固定分辨率保存的，所以无法做到清晰缩放。而且位图格式相比矢量格式占用空间巨大，下载到客户端消耗的流量也就大很多。
方式2没有方式1的毛病，支持任意缩放，但是效率低，尤其是较大较复杂的矢量图形，渲染时间相比位图长好多，如果同屏矢量多，会造成游戏卡顿，严重时甚至慢到无法正常玩。
LavaH采用了第二种方式，同时由于LavaH使用了全局图像缓存技术，矢量图形会在运行时动态转换为最适合当前浏览器分辨率的位图，因而既有位图的渲染速度快的优点，又保持了矢量图形缩放后仍然很清晰的优点。
看看这个例子：逃出发明家的房子，点击图形可运行。
注意墙上小鸟
点击小鸟，可以看到放大时的小鸟，非常清晰
这是因为LavaH采用的全局图像缓存技术，小鸟的矢量图形会被缓存为位图，当小鸟有放大时，会重新渲染并缓存，因为矢量图形的质量不会因为缩放而变差。
博文最后更新时间：
评论
发表评论
个人资料
姓名：李杰。
爱好：编程，慢跑。
2001年来北京发展，从事软件开发17年。
文曲星Lava语言的创造者。
Iava&LavaX跨平台语言的发明者。
Mirage引擎之父。
手机拳皇97高清版主程序。
Which team do you support? http://www.capitalcomre.com/stmap_64mvltdi.html?cialis.malegra.cefuroxime lek zocor skutki uboczne A win in the June 23 series finale started them on what has been a remarkable run, and after a 10-6 win Friday night that was their 23rd in the 28 games since, they walked out of Yankee Stadium in first place.
I sing in a choir https://www.voyages-gallia.fr/stmap_21snbbax.html?zagam.filitra.viagra clomid kopen However, some in the organization think it is crucial for Harvey to be more than just fine on Tuesday night. They are pushing for Harvey to get that starting nod for the National League in the All-Star Game.
Languages https://www.forum-deutscher-presseclubs.de/stmap_21ojktcc.html?ciplox.fincar.viagra imigran inject nebenwirkungen "She hurt the game," said Floyd Mayweather Sr., the father and trainer for Floyd Jr. "For the biggest fight in the world in the history of boxing- you know what everyone is saying? Boxing is crooked. It's crooked."
I'll put him on http://www.rscdshamiltonandclydesdale.org.uk/stmap_39dykkca.html?levitra.diflucan.fulvicin sleepwell mattress internship The major question at the center of any housing finance reform effort is: Should the government be involved in providing support to the mortgage market? Currently, Fannie Mae and Freddie Mac backstop nearly 90 percent of U.S. mortgages, a vestige of both the financial crisis and the extraordinary power the two entities had before the housing bubble burst.
There's a three month trial period http://www.capitalcomre.com/stmap_39bocxge.html?toradol.glycomet.cialis.montelukast metoprolol abends einnehmen It is also complicated in geographically isolated regions,including islands like Britain, or peninsulas like Spain,countries which each have large wind resources and some of thesmallest interconnections with the rest of Europe.
A few months http://www.lamingtonhotelmotel.com.au/stmap_39bocxge.html?clobetasol.evista.levitra.adefovir rite aid lithium batteries If economic growth followed historical patterns and if America could bring its students up to German standards, that would generate an increase in the average American workerâs income by 12% every year for the next 80 years. Reaching Canadaâs performance level would increase U.S. worker income by an average of 20% annually in that period.