Multiple canvas3D

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Ved - 01 Feb 2004 02:22 GMT

hi,
I have a swing + java3D program which creates and destroys a large
number of canvas3Ds.Depending on the set of buttons pressed a new
canvas3D is displayed each time.The program works fine upto a point but
once the number of canvas3Ds created and destroyed is large(~20) the
program crashes with a java.lang.InternalError. I get this error inspite
of freeing up earlier canvas3D's and calling System.gc()(i know it is no
longer recommended to call System.gc).Since Canvas3D is a heavyweight
component, is the jvm running out of some resource?

I can recode my app to use a single canvas3D and change the
scenegraph(add and delete branches). I just want to exhaust all
possiblities before doing this.

Any tips and suggestions as to what is to be done?

ved

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Sascha Ledinsky - 06 Feb 2004 09:28 GMT

hi,

I've had the same problems, somtimes it even crashed Win2k with a bluescreen when hardware-acceleration (ATI card) for GL was turned on...
I got the impression that the whole thing isn't really tested for applications which create and destroy multiple Canvas3D objects - even JOGL and GL4Java seem to have the same problems.

If you can rewrite you app to just change the scene-graph I'd do it this way!
I never found a solution to this problem altough I spent weeks trying... :-(

> hi,
> I have a swing + java3D program which creates and destroys a large
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>
> ved

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Ved - 19 Feb 2004 21:41 GMT

Hi,
I changed my design (now altering the scenegraph instead of multiple
canvas3Ds) and it works like a charm. I suspect multiple canvas3D's is
not such a good idea
thanks anyway
vyas

> hi,
>
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>>
>> ved

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Multiple canvas3D

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