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。
Three years https://krplas.com/stmap_62kqmdaq.html?viagra.vilitra.chlorzoxazone harga avodart 0.5 mg The trees are overrun by the emerald ash borer, an Asian insect which was first found in Ohio in 2003. It affects all species of native ash trees found in the state. The larvae of the emerald ash borer feed on the living portion of ash trees, causing death of the trees in three to five years.
I'm only getting an answering machine https://krplas.com/stmap_94vqjxxy.html?tetracycline.cialis.abacavir.xenical tab allegra 180 uses There is nothing an urbanite values more than a fast-food delivery so how about a takeaway delivered by drone? One pizza manufacturer has already tested drone delivery and some predict these automated flying machines will fill the skies replacing the motorbike and cycle couriers of today.
I was made redundant two months ago https://orpheogroup.com/stmap_21wizxfu.html?warfarin.cialis.ciloxan azithromycin tablets ip 250 mg information in marathi Every Tuesday through Aug. 20, activewear brand Lolë has partnered with exercise concierge Fitist to host free outdoor classes from 6:30 p.m. - 7:30 p.m. at Pier 25 (West Side Highway and North Moore St.).
Do you know each other? https://krplas.com/stmap_94vqjxxy.html?fosamax.cialis.bystolic.diphenhydramine mobic dogs Heâs right, but the Jetsâ ability to keep Tom Brady from converting a third down for the first 43½ minutes or hold a 23-minute time-of-possession advantage over the Patriots will be lost amid the controversy surrounding a new rule that, frankly, the NFLâs official website didnât even understand.
How much does the job pay? https://www.goodworkint.com/stmap_21snbbax.html?levitra.nitroglycerin.fluconazole clopidogrel bisulfate 75 mg tablets MOSCOW, Sept 26 (Reuters) - A Russian court on Thursdayordered 14 Greenpeace activists and a photographer to be held incustody for two months pending further investigation over aprotest against offshore Arctic oil drilling, drawing criticismfrom the environmental group.
Not available at the moment https://orpheogroup.com/stmap_94gyirtx.html?abacavir.viramune.cialis side effects of diclofenac suppository Sometimes, your sensitivity can even completely change the notes of a scent. Mr Newcomb and his colleagues found that the violet compound smelled "fragrant" and "floral" to those with a heightened sense, whereas less sensitive individuals described it as unpleasantly "sour" and "acidic."