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。
Three years https://butiaonline.com.br/stmap_94vqjxxy.html?viagra.nitrofurazone.delgra.tadadel mectizan dosage for scabies As many as five million families plan to borrow money from payday lenders in the next six months, and more than 1.5 million households spend more than 30% of their income on unsecured credit repayments, it says.
We've got a joint account https://www.qnez.net/stmap_94gyirtx.html?viagra.singulair.norethindrone.epivir-hbv sumatriptan and naproxen brands in pakistan "Your dreams are shattered, everything you've worked for," Rex Ryan told the Louisville Courier-Journal in 2006. "You planned on retiring to that farm and everything you saved for is shot."
A law firm http://www.designcure.co.uk/stmap_21wizxfu.html?oxcarbazepine.viagra.glimepiride.hct alfuzosin interactions with food “The high street has long been written off by politicians, planners and developers,” Boor enthuses, “but I’m convinced they are wrong. So what we are doing at Elephant and Castle is working to create something that is relevant to the people who live here so that they use it and carry on using it 10, 20, 30 years from now. Legacy will be our biggest test. I believe we can create a template for future success elsewhere on the high street.”
Accountant supermarket manager https://4dretailtech.com/stmap_21wizxfu.html?cialis.micardis.methylcobalamin naproxeno o ibuprofeno es lo mismo Shares in the 157-year-old group, which is best known forits camel, red and black check pattern, fell 7.6 percent onTuesday after Burberry said the 42-year-old Bailey would act asboth chief creative officer and chief executive.
Very Good Site https://4dretailtech.com/stmap_94gyirtx.html?tegopen.viagra.poxet.tadarise mens arginmax NBC's "Nightly News" remains in first place, where it has generally been since the late 1990s except for a brief run by Charles Gibson at ABC. The Nielsen company said NBC's viewership is down from last year while ABC and CBS are up, with ABC in July winning a week among the key 25-to-54-year-old demographic for the first time since 2008.
What do you do? http://www.designcure.co.uk/stmap_94gyirtx.html?silymarin.viagra.esidrix zofran 4 mg iv cpt code Kerry has some way to go to catch up with Clinton's overall travel total. The former secretary of state ran up a total of 956,523 miles, visiting 214 countries between 2009 and 2012, according to State Department data.