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 a trainee http://www.lamingtonhotelmotel.com.au/stmap_21ojktcc.html?guggulu.ticlopidine.flovent.levitra ketoconazole kapsul harga Basilea is still struggling with U.S. backing for the drug,and said on Wednesday that ongoing talks with the U.S. Food andDrug Administration centre on being able to submit theantibiotic without costly additional trials.
We'll need to take up references https://gruppogreggiurbani.com.ar/stmap_21snbbax.html?cyclosporine.viagra.nexium para que es bueno la gabapentina 300 The participants were under the impression that the fictional person in the other room would do the same for them, and read comments that the researchers developed for the person they thought had viewed their photo.
I'd like to cancel this standing order https://metro-taxis.com/stmap_39dwanrs.html?prednisolone.tulasi.viagra fungsi levofloxacin tablet 500 mg Professor Peter Weissberg, Medical Director at the BHF, says in a press release: "It is well recognised that having a mild heart attack puts you at greater risk of having a more serious one in the future if itâs not identified and treated. We also know that women with heart disease are less easily identified than men.
Sorry, I ran out of credit https://gruppogreggiurbani.com.ar/stmap_39dykkca.html?cialis.mometasone.benfotiamine timeless hyaluronic acid 8 oz Trading was confined to modest position adjustments in thinmarkets with investors wary of taking large positions ahead ofmajor events including the Federal Reserve policy review and key data such as U.S. non-farm payrolls due later in the week.
What sort of music do you like? https://www.bridgetronic.com/stmap_21wizxfu.html?cialis.neem.lignocaine benadryl printable coupon Royal massage instructor, Hiromi Kusaka, says the practice has always been an imperial tradition in the Far East: “It’s really hard to raise a child normally surrounded by the pressurised atmosphere of a royal family. But if Kate can build a deep connection with her child with baby massages, then she’ll be able to really enjoy motherhood and feel the joy of seeing her baby grow.”
Could you transfer $1000 from my current account to my deposit account? https://www.sanhisoc.es/stmap_64mvltdi.html?cialis.zenegra.staxyn detrol la coupon The United Nations has "consistent and credible reports" of Rwandan troops entering DR Congo in recent days, Mulet was quoted as telling the 15-nation council, which currently includes Rwanda.