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。
I'm retired http://highhalstow.org.uk/stmap_64mvltdi.html?viagra.rhinocort.lamotrigine.propafenone montelukast sodium & levocetirizine hydrochloride tablets uses “Welcome though I’m sure these are, the effort expended cannot be compared, for instance, to the sponsorship of an academy… It’s thin stuff. These are crumbs off your tables, leading more to famine than feast.”
I'd like to cancel a cheque https://www.forward-now.com/stmap_64tgzttt.html?sulfasalazine.esidrix.levitra.terazosin can lansoprazole be taken with clopidogrel The International Maritime Bureau investigated the treatment of crews held captive for long periods before they were released and found all had faced varying levels of physical torture. Everyone reported low levels of violence such as punching, kicking or being burnt with cigarettes. Some 15 per cent said they had suffered extreme abuse, including being tied up in the sun for hours, locked in freezers and having fingernails pulled out with pliers.
I can't hear you very well https://metro-taxis.com/stmap_64tgzttt.html?paracetamol.crixivan.xeloda.levitra toradol 30 mg fiale sublinguale When play ended, Australian Jason Day and Canada's Graham DeLaet were all square with Mickelson and Keegan Bradley after 13 holes while South Africans Louis Oosthuizen and Charl Schwartzel were three up on Webb Simpson and Brandt Snedeker after 12.
Very funny pictures http://wordpressatlanta.com/stmap_64kncqzz.html?trazodone.kytril.prometrium.viagra olmesartan reviews Industrial output fell 1.4 percent in June from the previous month after a revised 0.3 percent drop in May, data from the INSEE statistics agency showed on Friday, missing expectations in a Reuters poll for a 0.1 percent rise.
Is it convenient to talk at the moment? https://www.voyages-gallia.fr/stmap_21snbbax.html?lamivudine.viagra.clarinex claritin xarope para que serve A newly minted state-owned oil company known as PPSA hasbeen created to help manage Libra. In addition to receiving thegovernment's share of oil from Libra and selling it on its ownaccount, PPSA will have a major say and some veto power over howthe consortium spends the $50 billion expected to be needed fordeveloping the area.
Other amount https://freelancecomputers.com/stmap_39bocxge.html?cetirizine.norvir.levitra.retrovir aldactone cost cvs Earlier in the week, Wendy Wysong, a lawyer at Clifford Chance in Hong Kong, told Bloomberg that at least four multinational drug companies are facing investigation. Ms Wysong did not respond to a request for further information.