Hi Glen,

Hi Sebastian,

I’ve downloaded the book of English version you specified. It really contains section which illustrates how to handle loading massive amount of model data. Thanks you very much.

And there is a lot more useful information in the book. So it is really worth buying it.

By the way, how do you know I’m from China? Do you tell it from my English? J

No, I assumed this not by your english, but by your email-address and the strange Chinese letters it the topics name ;-)

Cheers Sebastian

Glen

*发 件人:*osg-users [mailto:osg-users- [email protected]] *代表 *Sebastian Messerschmidt
*发 送时间:*2014年8月27日14:09
*收件人:*OpenSceneGraph Users
*主题:*Re: [osg-users] 答复: OSGEarth crash when loading large amount of data

Hi Glen,

    Hi Robert,

           Thank you very much for helping me trace the problem. I
    will later check the material parameters according to what you
    indicate. Now I concern about another issue.  Suppose that I got
    an quite large model file and need to load it into OSG. Usually
    the model file is so big that it will take dozen of seconds to
    load. How can I quickly load the model file without waiting too
    long, thus users can have a good experience. Now my conclusion is
    to split the large model into smaller ones to decrease the loading
    time. If this solution is adopted, I also need to implement view
    update callback to dynamically load smaller model files according
    to current view range. So please give me some advice how to
    implement my goal?

There are ready-to-use mechanism in OpenSceneGraph. You can use PagedLOD and ProxyNodes for splitting your models into smaller pieces. The PagedLOD also provides the means to make the display of the node dependant on the distance. I really suggest to crawl through the examples here. Also the "OpenSceneGraph 3 Cookbook" might be of great help. It is also available in Chinese language IIRC.

Cheers
Sebastian

Glen



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