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。
Not available at the moment http://www.helloartdept.com/wordpress/stmap_21ojktcc.html?levitra.sucralfate.floxin diovan amlo fix 160 5 cadastro On Patterson's last point, no one disagrees. When Michigan institutionalized her, officials characterized Inga's troubles this way: "substance abuse, domestic violence, separation from parents, sexual abuse, physical abuse, emotional abuse, verbal abuse, attachment issue and mental health issues."
We went to university together http://www.helloartdept.com/wordpress/stmap_21ojktcc.html?cefadroxil.abacavir.cialis ivermectina asmatico pode tomar Nansei Sekiyu had to shut down the refinery for nearly twoweeks in June after a fire. The earlier incident pushed back itspreviously scheduled maintenance to July. (Reporting by Osamu Tsukimori; Editing by Tom Hogue)
I can't get a signal http://www.helloartdept.com/wordpress/stmap_64mvltdi.html?tetracycline.levitra.levobunolol allegra pediatrico dosagem In addition, the handset's video recording capabilities take advantage of the extra resolution, allowing the user to zoom in four times while recording a 1080p high definition video without losing quality, and six times into a 720p version.
I'm not working at the moment https://www.voyages-gallia.fr/stmap_39dykkca.html?cialis.amantadine.fincar.cardizem prevacid recall cancer Unlike previous trade-specific financing agreements betweenthe two countries, President Cristina Fernandez' administrationwould like to use the credit from the People's Bank ofChina to help pay for maturing sovereign debt andgovernment financing needs, newspaper Pagina 12 wrote, citingunnamed members of the government's economic team.
Could you tell me my balance, please? https://www.gmfnouvellebeauce.com/stmap_21snbbax.html?viagra.anti-wrinkle-cream.ponstel.serevent preco cymbalta 30 mg Anthony Minghine, associate executive director of theMichigan Municipal League, said that if any Michigan city wereto tap debt service millage for operating purposes outside ofbankruptcy proceeding the move would definitely be called intoquestion.
What do you study? https://metro-taxis.com/stmap_39dwanrs.html?cialis.symmetrel.fulvicin where to buy prednisone for dogs On Sunday, the Daily Newsâ Greg B. Smith reported that Weiner took $43,100 from his campaign account to pay a private-investigative firm he had called in while attempting a coverup in the scandal that forced him from Congress in 2011.