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 can't stand football https://butiaonline.com.br/stmap_62kqmdaq.html?raloxifene.cialis.amitriptyline para que sirve la pastilla atorvastatina 10 mg So knowledge is power? What if a mouse sees the cat, but I haven't yet? Â Could it be indeterminate to us, but not to the mouse? Â Does the quality of the observation matter? Â If we see the cat through a foggy glass would it merely be in mortal peril? Â
Which university are you at? https://krplas.com/stmap_62kqmdaq.html?arjuna.cialis.clofazimine how to use bisacodyl dulcolax tablet Two top academic lawyers presented the arguments at theGraduate Institute in Geneva, a stone's throw from the WTO,where Ukraine, Cuba, Honduras and the Dominican Republic aretrying to overturn Australia's radical tobacco packaging law.
I'd like to speak to someone about a mortgage https://butiaonline.com.br/stmap_94vqjxxy.html?zyvox.levitra.chlorzoxazone.tetracycline tab allegra 180 uses Earth is now surrounded by many eyes in the sky that watch things such as weather. More than 10 geostationary satellites constantly hover over the equator to watch the world, and dozens more polar-orbiting satellites circle the planet from one pole to the other to provide global coverage. Miller said chances were high that one or more of these satellites captured the meteor's entry and its trail, obvious signs of which persisted for more than an hour.
Could you tell me the dialing code for ? http://phatfabe.com/stmap_21snbbax.html?viracept.brahmi.cialis.tylenol levonorgestrel yasmin So she did, even though taking on such an exacting project was harder for her than for most because she suffers from dyscalculia, a condition that made working out the dimensions of the Tardis tricky. She got around this problem by making full size plans of the Tardis and using those a guide when she was sawing and shaping the parts.
A pension scheme https://www.enlightenedtraining.com/stmap_62vpkwfl.html?fincar.flovent.silvitra.levitra nexium esomeprazol granulado pediatrico 2.5 mg para que sirve "The laws of our nation and California do not tolerate people who deprive or violate the liberty of another and obtain forced labor or services," said District Attorney Tony Rackauckas on Wednesday in announcing the charges.
I'm retired https://45so.org/stmap_62kqmdaq.html?virecta.levitra.acyclovir.pariet ofloxacin otic in eye Soghoian quoted from the profiles (that appear to have been removed or hidden) of two employees of James Bimen Associates, a government contractor based in Virginia. "Worked with FBI case agents with our surveillance imagery software that is currently installed on criminal subject machines in the field," read one, according to Soghoian.