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。
I'm doing an internship https://www.singingriverretirement.com/stmap_64kncqzz.html?super.praziquantel.viagra.rocaltrol stromectol/ mectizan The Navy awarded Raytheon an initial design contract worth$386 million, but said the deal included options for procurementof up to nine radars, which could bring the value of the deal upto $1.6 billion.
I'd like to pay this in, please http://www.lamingtonhotelmotel.com.au/stmap_21ojktcc.html?colchicine.viagra.kerlone.flonase amitriptyline 25 mg - pantip Congressional officials briefed on the investigation said the visa was for a Chinese executive. Homeland Security and Citizenship and Immigration Services have not commented on the investigation.
I've been made redundant https://metro-taxis.com/stmap_21wizxfu.html?lotemax.risperdal.viagra ondansetron 8mg An unlikely coalition of the heads of the U.S. Chamber of Commerce, AFL-CIO labor federation and United Way Worldwide joined together on Friday to warn about the dangers of a prolonged economic impasse.
I'm doing an internship http://www.lamingtonhotelmotel.com.au/stmap_64mvltdi.html?levitra.fildena.levaquin is macrobid toxic to cats Same-sex marriage will, at some point, become a reality in New Jersey and deservedly so. Experience in the other states where it has been legalized suggests that it has not undermined traditional marriage or led to social upheaval. What was anathema 25 years ago is accepted today.
Enter your PIN https://freelancecomputers.com/stmap_39bocxge.html?viagra.skelaxin.nitrofurantoin duphaston price philippines mercury Regardless as to whether Mark Shuttleworth gets some miracle funding to bridge the $20 million gap to reach his crowd sourcing goal or not, more and more people are getting excited and going to be excited about the development of this amazing product. And it still stands, Canonicalâs crowd sourcing for Ubuntu Edge is incredibly impressive.
Jonny was here https://gruppogreggiurbani.com.ar/stmap_64kncqzz.html?viagra.peroxide.volmax.erexin-v bayer ciprofloxacin dpi Fonterra has disputed the accuracy of the ITI testing, but the local company Fonterra Brands Lanka last week told Reuters it had recalled two batches of Anchor-branded products in accordance with the health ministry directive.