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。
One moment, please http://health.manager.paraxs.com/stmap_31monane.html?monoket.dexamethason.viagra.amlodipine micardis 20 torrino The most heavily traded stocks were among Europe's mostliquid, the data showed. Vodafone ranked first,Switzerland's Nestle second and drugmaker Sanofi third. Dark trading counted for between 4.7 percentand 8 percent of the total value of trades for these stocks.
I can't stand football http://ja.ceasbd.com/stmap_54yebbug.html?mometasone.zoloft.cialis augmentin fiyat 2020 5. TIM TEBOW STILL HAS WORK TO DO: Tebow made his New England debut after backup Ryan Mallett left with a head injury late in the second quarter. He was 4 of 12 for 55 yards and ran for 31 yards on four carries.
Until August http://health.manager.paraxs.com/stmap_19zwkycw.html?sulfamethoxazole.valsartan.viagra para que sirve el betnovate crema Although Iran did not cross that "red line", Israel worries that it has improved its technologies and is now capable of dashing toward a first bomb within weeks. On Tuesday, Netanyahu noted the Iranian heavy water plant Arak that, he said, could produce plutonium - another potential fuel for nuclear weapons.
We used to work together http://ja.ceasbd.com/stmap_31monane.html?renova.fenofibrate.viagra mirtazapine 7.5 mg side effects “Shared” sacrifice? The very mention of the word ‘shared’ evokes in the hearts of most Americans a vision rivalled only by so many Taliban rowboats beching that the national ammunition supply runs out.
I'd like to open a personal account https://apps.huavalledupar.co/stmap_54xzbfos.html?cialis.erectafil.furosemide.palmetto stromectol precio mexico Scott hadn’t been real impressed with himself lately. “Mediocre,” is how he described his play the last couple of months, so for a minute there he was happy just to feel like he was playing well again.
I have my own business http://timer.unbound.services/stmap_19xorppt.html?monoket.nitrofurantoin.levitra prazosina 1 mg para que sirve Birmingham was strictly segregated at the time of the bombing, which occurred as the city's schools were being racially integrated for the first time. The all-black 16th Street Baptist was a gathering spot for civil rights demonstrations for months before the blast.