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's the last date I can post this to to arrive in time for Christmas? https://www.gmfnouvellebeauce.com/stmap_64kncqzz.html?revia.digoxin.viagra misoprostol farmacia cruz verde IDA occurs when the body lacks sufficient iron for normalproduction of red blood cells and can cause tiredness, shortnessof breath and a pale complexion. An estimated 7.5 million peoplesuffer from the condition in the United States, Galenica said.
The line's engaged https://toddmillerlaw.com/stmap_39dykkca.html?levitra.vrikshamla.sleepwell.methoxsalen mirasic paracetamol obat Powers available to local authorities include temporary notices to remove unauthorised caravans, pre-emptive injunctions that protect vulnerable land in advance, and possession orders to remove trespassers from land.
Do you know the number for ? https://toddmillerlaw.com/stmap_39dykkca.html?silvitra.levitra.pentasa.famciclovir orlistat 60 mg gnstig kaufen Michael Ferrante, 30, and his 28-year-old wife, Nicole, sought custody of the girl, arguing they're more age-appropriate guardians than the Kleins, who are in their 70s. Their attorney wrote that the couple would also "provide a positive atmosphere without criticizing the child's father or mother and will insulate the child from the child's father's likely murder trial."
What sort of work do you do? https://freelancecomputers.com/stmap_21ojktcc.html?zocor.viagra.trileptal zyrtec generique maroc Last month, a federal judge accepted a separate plea agreement calling for Halliburton to pay a $200,000 fine for a misdemeanor stemming from Badalamenti's conduct. Halliburton also agreed to be on probation for three years and to make a $55 million contribution to the National Fish and Wildlife Foundation, but that payment was not a condition of the deal.
this is be cool 8) http://www.helloartdept.com/wordpress/stmap_39bocxge.html?womenra.cialis.eregra alternative to fucidin cream Without much of a setup at its beginning, most of the exposition in "World War Z" actually comes in the film's third act, when it finally slows down and puts some thought into its narrative. The sequence was a reshoot, replacing an altogether different ending, and made an already pricey film astronomically expensive. One has to hope the first ending was bad enough to make the extra effort worth it. Nevertheless, the finale still feels retrofitted. "World War Z" lacks the thematic momentum leading to the final resolution.
I came here to work https://pemcincinnati.com/blog/stmap_39dwanrs.html?combivir.nootropil.cialis.alfuzosin tetracycline dosage for mrsa Relatives of the four soldiers killed by a Taliban bomb attack gathered at Dover Air Force Base in Delaware on Wednesday to attend the solemn ceremony commemorating the return of the remains of their loved ones to the United States.