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。
Insert your card http://www.lamingtonhotelmotel.com.au/stmap_64mvltdi.html?virility-pills.uroxatral.hydrochloride.viagra vitamin b12 in hindi food âWhat has happened at al-Madinah ought to have implications for other schools,â a government source said. âMinisters may decide to make an example of it and shut it down â it would be a political decision.â
I support Manchester United https://www.sanhisoc.es/stmap_64mvltdi.html?dexamethasone.viagra.valproic antibiotikum ciprofloxacin alkohol Suleimani took command of the Quds Force fifteen years ago, and in that time he has sought to reshape the Middle East in Iran's favor, working as a power broker and as a military force: assassinating rivals, arming allies, and, for most of a decade, directing a network of militant groups that killed hundreds of Americans in Iraq. The U.S. Department of the Treasury has sanctioned Suleimani for his role in supporting the Assad regime, and for abetting terrorism. And yet he has remained mostly invisible to the outside world, even as he runs agents and directs operations. "Suleimani is the single most powerful operative in the Middle East today," John Maguire, a former C.I.A. officer in Iraq, told me, "and no one's ever heard of him."
Could I have a statement, please? https://www.forward-now.com/stmap_39dwanrs.html?viagra.tazalis.thioridazine.galantamine priligy testat "Comic-Con over the past few years has seen such a growth interms of size and scale of what's going on, there's a lot morenoise and clutter, and we're always looking for ways to standout in the market there," said Zach Enterlin, HBO's senior vicepresident of program advertising.
I'd like to apply for this job http://www.lamingtonhotelmotel.com.au/stmap_39bocxge.html?viagra.ruagra.oxytetracycline.tinidazole viagra generic aclepsa Lots of people die on Showtime programs, but bad guys getting skewered on âDexterâ arenât quite the same as what viewers will see on âTime of Death,â a documentary series that premieres in November.
I'm a trainee http://www.capitalcomre.com/stmap_21ojktcc.html?virecta.raloxifene.lipothin.cialis vitrix male enhancement side effects However, the research also showed that those who piratecontent were likely to spend more money on legal downloads. Over a three monthperiod piraters spent £26 compared to £16 from those who refrained frominfringing copyright.
Will I get paid for overtime? http://chassell.net/stmap_64mvltdi.html?cialis.aceon.seromycin.ritonavir ursodiol 300 para que sirve Later, a car bomb exploded in a busy street in Nasiriyah city in southern Iraq, killing four people and wounding 41 others, officials said. Nasiriyah is about 200 miles (320 kilometres) southeast of Baghdad.