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。
What sort of work do you do? https://www.goodworkint.com/stmap_94vqjxxy.html?l-tryptophan.cialis.dimenhydrinate aldara creme preisvergleich Chevedden worked at various aerospace companies over the years, including Allied Signal Inc,now part of Honeywell International Inc, and Hughes Aircraft, then part of GM. His jobsincluded scheduling parts orders for satellites or turbochargers, and he says he had to learnhow to hold engineers accountable.
I'd like to withdraw $100, please https://www.goodworkint.com/stmap_62kqmdaq.html?loratadine.viagra.eregra efectos secundarios del albuterol en bebes âI just have to do my part, which is the position that Iâm playing, which is primary X receiver, and a lot of times I get double-covered, taken out of plays, so the progression and the read from the quarterback have to go elsewhere.â
A First Class stamp https://krplas.com/stmap_94vqjxxy.html?ticlid.minocin.viagra.micardis duloxetine generic price "Dominique Ansel: The Secret Recipes" is scheduled to be published in October 2014, and, according to the press release, "will showcase Ansel's artistry and versatility in a unique format." The book will "teach novice and experienced bakers how to turn the simplest of ingredients (flour, sugar, butter) into the most extraordinary, tempting, and satisfying pastries imaginable-right in their own ovens."
I'm a member of a gym https://orpheogroup.com/stmap_62vpkwfl.html?testosterone.cialis.poxet rogaine company name According to the National Cancer Institute, the first sign of melanoma is often a change in the shape, size, color or texture of an existing mole. Melanoma may also appear as a new mole or change in skin. Many skin care experts recommend the ABCDE method to help people look for and detect possible melanomas:
Will I get paid for overtime? https://www.qnez.net/stmap_62vpkwfl.html?asendin.viagra.chloramphenicol rogaine company name In consenting to the fine, Oppenheimer neither admitted nor denied FINRA's charges. The full-service broker-dealer, a subsidiary of Oppenheimer Holdings Inc, employs about 2,450 registered financial professionals in 115 branch offices.
I've been cut off https://orpheogroup.com/stmap_62vpkwfl.html?levitra.amoxicillin.oxcarbazepine dostinex cabergolina para que serve Where many creative folk might traditionally hoard such miscellanies in a box under their bed, Jarman pasted everything into these books, but not without loving care: the elegant balance of his layouts strikes you constantly. Browsing through while putting one of his features on – his poetically despairing anti-Thatcherite elegy The Last of England (1987), say – is an ideal way to immerse yourself in Jarmania.