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。
Could I ask who's calling? http://www.kodiakmetalworks.com/stmap_24wriwom.html augmentin ve alkol Olaf Swantee, Chief Executive Officer, EE, said: “It has been a busy summer with the launch of next generation services including Cash on Tap and new Shared 4GEE plans, and we’re continuing to keep up the pace of our 4G rollout. Today we’re launching in a further 10 UK towns bringing superfast 4G services to more and more businesses and consumers. The arrival of double speed 4G in a further three cities means we remain one step ahead, and on track to provide our customers with a world leading mobile experience.”
Not available at the moment https://www.radstrategic.com/stmap_24ssxciv.html?cialis.metformin.probenecid.ziac does bactroban contain sulfa Another NFL star, Ray Lewis, 38, who won the Super Bowl this year with the Baltimore Ravens was charged with the murder of two men outside a nightclub in Atlanta in 2000. He subsequently negotiated a plea agreement, where the murder charges against him were dismissed in exchange for his testimony against two other men accused of involvement.
I'm on a course at the moment https://www.ebbersgroenprojecten.nl/stmap_37iydmeb.html?viagra.mesylate.macrobid picture of carvedilol 25 mg Voyager 1 and a sister probe, Voyager 2, were launched in1977 to study the outer planets. Voyager 1 is now about 120times farther away from the sun than Earth. Voyager 2 is headingout of the solar system in a different direction.
I'm on business https://endydaniyanto.net/stmap_37whvkrr.html?cialis.pristiq.maxaquin.levonorgestrel cefixime tablets 400 mg Alefacept (brand name Amevive) was approved in the US for treating psoriasis, but has not been approved in Europe. The manufacturer decided to stop producing it for business reasons. It is not clear whether this drug is still commercially available.
Children with disabilities https://proudlyyours.com/stmap_18jbbvts.html?zenegra.rulide.viagra.clomid ibu mengandung makan panadol soluble ElBaradei had given his blessing to the July 3 coup. He hadgiven the interim regime a respectable facade when he acceptedthe vice presidency. He opposed the storming of the twoencampments of the Brotherhood; he had foreseen the bloodyoutcome and sought to distance himself from it.
I quite like cooking https://evilpigeon.dk/stmap_24pkcjjq.html?clonidine.atarax.cialis cloridrato de ciprofloxacino comprar online Police officers said a total of 12 parked car bombs hit markets and parking lots in predominantly Shiite neighborhoods of Baghdad within one hour. They say the deadliest were in the eastern Shiite neighborhood of Sadr City, where two separate explosions killed nine civilians and wounded 33 others.