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。
Have you got a telephone directory? https://orpheogroup.com/stmap_94gyirtx.html?warfarin.levitra.varenicline paracetamol 1000 mg sandoz bijsluiter Fiona goes to the plastic surgeon in order to look younger but receives news so bad that they canât operate â she has cancer. Meanwhile Cordelia is in a similar situation. Visiting the fertility doctor, Cordelia learns that her spell failed and she canât have children.
Will I get paid for overtime? https://krplas.com/stmap_21snbbax.html?lasix.viagra.mesylate flagyl dose cats giardia Meanwhile, in the face of continued provocations since the 2008 attacks on Mumbai, India's capacity for restraint may have reached its limits, Kugelman worries. And the election slated for May 2014 will put added pressure on Singh's government to take a hard line.
How many more years do you have to go? https://krplas.com/stmap_94vqjxxy.html?malegra-dxt.ginseng.levitra mycophenolate mofetil apotex forum So ironically, Schwartz was grilling Gross on SNY, home of the Mets, while Francesa was bashing the Yankees on YES, the Bombersâ TV home. The SNY report was quickly circulated on Twitter. Yet on WFAN/YES, Francesa kept hammering the Yankees. Either the report wasnât brought to his attention or he chose to ignore it. Bad idea.
I stay at home and look after the children https://orpheogroup.com/stmap_62vpkwfl.html?chloroquine.fluoxetine.viagra bei gelenkschmerzen ibuprofen oder paracetamol "We do not believe the auditor's role should be expanded toprovide assurances on matters in addition to the financialstatements," wrote Chevron Corp's vice president andcomptroller, Matthew Foehr, in a September 2011 comment letterto the PCAOB.
On another call https://www.enlightenedtraining.com/stmap_21wizxfu.html?starlix.cialis.minocycline.catapres isotretinoin ratiopharm 20mg weichkapseln Verlander had not allowed a run since Sept. 18, a span of five starts. His scoreless-innings streak reached 34 before Napoli's home run. However, Lackey scoffed at the idea that he felt he had to outduel Verlander.
How do you spell that? https://45so.org/stmap_62kqmdaq.html?famotidine.serevent.levitra voltaren ilacabak Miller also has been under investigation by Connecticut state police and authorities in Fairfax County, Va., following allegations that he molested five boys, who ranged in age from 10 to 13 years old, more than two decades ago, according to a state police search warrant affidavit for Miller's home that was obtained by the AP.