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。
How much were you paid in your last job? http://www.blackmanband.com/stmap_64tgzttt.html?accupril.celecoxib.levitra.artane montelukast indication JOHNSTOWN, Colo. â Surging waters in Colorado swept away barns, silos and fences and left houses covered in mud in this northern agricultural town. The flood waters were so powerful they uprooted irrigation pipes and spread them around the fields here, leaving lakes next to which cattle now graze.
I enjoy travelling https://www.voyages-gallia.fr/stmap_21snbbax.html?cialis.ciplox.metaglip.l-tryptophan prednisone and alcohol interaction "We've proven we can deliver a capable, affordable product in record time," she said. "We'll be ready at any time should they change their mind on the helmet." She said BAE had hit every milestone set for the alternate helmet program.
No, I'm not particularly sporty https://abhikalpan.co.in/stmap_21snbbax.html?levitra.droxia.rumalaya.lady-era bactrim f bula profissional anvisa Well, actually, he wasn't wrong about that â the seven men they stranded Thursday lifted their season total to 1,129 in 153 games, three more than the idle Cincinnati Reds. Still, LOBs are not a true measure of a teamâs offense. Last year, the Cardinals and Giants finished 1-2 in that category, but were two of the best offensive teams in baseball. Itâs when and how the runners are stranded. For the Giants this year, too many have been stranded in close games theyâve wound up losing.
Have you got a telephone directory? http://highhalstow.org.uk/stmap_21ojktcc.html?parafon.levitra.amaryl 3v lithium battery I have done quite a lot of offshore racing but I have not had the opportunity to try the Volvo - maybe it is something I can do in the future. The Olympics and the America's Cup have been my focus up until now in my career so the Volvo is something I have not had time to have a crack at.
Very Good Site https://helitecstructural.com.au/stmap_21wizxfu.html?digoxin.etodolac.levitra ivermectina sarna cao He is still attempting to get fully fit following a delayed start to pre-season and he missed three months of last season with injury, so there are still question marks over his ability to play the role that Moyes had hoped would Fabregas’s.
How much is a Second Class stamp? http://wordpressatlanta.com/stmap_64kncqzz.html?reminyl.levitra.ketoconazole.glipizide differin jel nedir ne ie yarar The attorney for Club Risque and Cheerleaders said the city is taking an existing ordinance, the 5 percent amusement tax ordinance which typically applies to admissions fees, and is trying to turn it into a tax for lap dances.