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。
Could I have an application form? https://www.enlightenedtraining.com/stmap_94gyirtx.html?cialis.glucophage.remeron.accutane eurax The private equity firms are through to the second round ofbidding and are preparing to submit offers by the middle ofAugust, the people said this week, asking not to be namedbecause the matter is not public.
Is there ? https://www.goodworkint.com/stmap_62kqmdaq.html?mebendazole.paroxetine.ascorbic.levitra ciprofloxacina mas dexametasona colirio New Zealand leads the competition seven races to one, with Oracle's first two wins having been negated by a cheating penalty before the finals began. The first team to score nine points will take home the 162-year-old America's Cup trophy.
Who would I report to? http://www.designcure.co.uk/stmap_94gyirtx.html?mega.levitra.hoodia suhagra 50 mg how it works When it first went on sale, Chromecast included a free three-month subscription to Netflix (a $24 value) with its $35 dongle, an irresistible deal that Google was forced to rescind hours later, but the sales kept coming and the diminutive device was backordered until late this month.
I've been cut off https://butiaonline.com.br/stmap_94vqjxxy.html?nexium.levitra.nootropil.cystone minoxidil 5 precio inkafarma "Essex was a place to move to and retire to," he said. "People like my parents stuck it out in the east end the whole of their working lives and wanted to spend their twilight years in Essex.
How many would you like? https://www.qnez.net/stmap_62vpkwfl.html?betnovate.budesonide.cytoxan.viagra ivermectin suppliers uk Country cutie Carrie Underwood's is off the market -- and has the rock to prove it! The 26-year-old singer showed off the ring fiance Ottawa Senators hockey player Mike Fischer gave her while cheering him on at a hockey game on Dec. 21. The five-plus carat diamond ring is worth almost $150,000, reported People.com.
very best job http://phatfabe.com/stmap_62kqmdaq.html?fucidin.cialis.cyclosporine bactrim ds safe during pregnancy "The government shutdown, the continuing effects ofsequestration, and uncertainty about the federal budget are allhaving negative impacts on URS and many other governmentcontractors," said URS CFO H. Thomas Hicks.