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 not working at the moment https://www.canadabusinessdirectorylistings.com/stmap_24pkcjjq.html?amoxicillin.levitra.sulfasalazine.chlorzoxazone yasmin pille zusammensetzung "Martha's Vineyard residents who have grown accustomed to the temporary disruptions of presidential vacation motorcades to the golf course and the beach can expect extraordinary and lengthy up-Island detours, after President Barack Obama and his family arrive Saturday," wrote the Martha's Vineyard Times.
good material thanks https://www.radstrategic.com/stmap_24ssxciv.html?kamagra.tromethamine.viagra.bupron aleve interaction with lisinopril "The number of A-players in Silicon Valley hasn't grown,"said Iain Grant, a recruiter at Riviera Partners, whichspecializes in placing engineers at venture-capital backedstart-ups. "But the demand for them has gone through the roof."
Why did you come to ? http://adamdesautels.com/stmap_37iydmeb.html?lopressor.viagra.doxycycline.dimenhydrinate krause leiter securo Saudi Arabia was also concerned about signs of a tentative reconciliation between Washington and Tehran, something Riyadh fears may lead to a "grand bargain" on the Iranian nuclear program that leaves it at a disadvantage.
I'd like to cancel a cheque http://adamdesautels.com/stmap_24pkcjjq.html?lynoral.duricef.cialis.premarin deva ki adalat full movie Taking her place at the Despatch Box, she said: “The irony of Alan Turing being prosecuted for his sexuality when he helped fight Hitler, who prosecuted and gassed homosexuals, was surely not lost on him.
Your account's overdrawn http://allphotobangkok.com/stmap_37iydmeb.html?shuddha.ketotifen.viagra.losartan kroger pharmacy sharpsburg ga I wish Tony Kushner had dared, just as I wish heâd acknowledged the existence of black activists such as Frederic Douglass. There are times when an audience needs a bit of a bit of a jolt. Iâm not sure that 7.30 in the evening, when all you want is a laugh, is one of them.
I quite like cooking https://evilpigeon.dk/stmap_24pkcjjq.html?mirtazapine.inderal.levitra.cordarone kegunaan prolic 300 clindamycin 300 mg "Hey, did you know that Jamie just got the Red Poll Calf in Farmville and claimed some animal feed. Well, now you do and oh, by the way, did you see Bertha's latest score in Lucky Slots?" Does anybody really need to know that their friends are playing some mindless game to wile away the hours at work? It's basically just advertising in disguise, and can seriously clutter up your news feed. Definitely a feature that needs to be turned off.