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 unemployed https://helitecstructural.com.au/stmap_39dwanrs.html?viagra.asacol.rocaltrol pepcid reddit gerd "What it really boils down to is a quality control issue," Dube said. "When people are selling saltwater products, when you're commercial, you have to adhere to strict standards pertaining to quality control."
Yes, I play the guitar https://freelancecomputers.com/stmap_64mvltdi.html?actigall.tegopen.cialis.monoket diclofenac potassium 50 mg for toothache But Anthony Weiner's name is not Wiener! It is spelled with "ei" rather than "ie," and in German, "ei" is pronounced "eye," as it would be in "whiner." So why doesn't he use that pronunciation? What sort of glutton for punishment is he?
A jiffy bag https://pemcincinnati.com/blog/stmap_64tgzttt.html?cialis.toradol.noroxin.venlor finasteride vs dutasteride hair loss Justice campaigner Mrs Lawrence, who is to be made a Labour peer, said her stomach is still "turning double somersaults" every time she thinks about her new role but added she wants to use it to change more lives.
I'd like to pay this in, please http://www.capitalcomre.com/stmap_39bocxge.html?sildalis.malegra-dxt.levitra misoprostol comprar farmacia Christopher Cruz, 28, of Passaic, New Jersey, was charged with reckless endangerment, reckless driving, menacing and endangering the welfare of a child, said Sergeant Lee Jones of the New York City Police Department.
What do you do for a living? http://narsg.uk/stmap_64mvltdi.html?olmesartan.levitra.atarax how to order abilify maintena New York remained the most expensive place to rent in the United States with an average effective rent of $3,049.37 per month, up 0.9 percent. The cheapest was Wichita, Kansas, at $528.95 per month, up 0.8 percent.
I'd like to send this parcel to https://www.gmfnouvellebeauce.com/stmap_39dykkca.html?cialis.potassium.glyburide para que sirve el celecoxib 200 mg Republicans, long opposed to the 2010 Affordable Care Actknown as "Obamacare," have seized on the information vacuumabout the website's problems to start their own investigation inCongress about the role of the White House.