Have you tried updating the material without detaching/reattaching the
entire scene? It is possible that the overhead of making a large
scene graph with a large number of Shape3D nodes live is taking
most of the time.
--
Kevin Rushforth
Java 3D Team
Sun Microsystems
[EMAIL PROTECTED]
>Date: Mon, 18 Sep 2000 18:17:26 +0900
>From: Norihito Hiruma <[EMAIL PROTECTED]>
>Subject: Re: [JAVA3D] Attribute change performance Issue.
>To: [EMAIL PROTECTED]
>
>Thank you for making it reply to kindness.
>It is very much helped.
>
>Lets me reply in the sentence.
>
>> - My reading of your code seems to suggest you are using exactly the
>> same material colour values for all 10K objects. Is that so?
>> If so, why
>> use 10K instances of the Material object. You should just use one and
>> share that instance between all Shape3D instances. The more instances
>> you can share, the faster your application. For example, if
>> you have 10
>> different coloured objects you only need 10 instances of the Material
>> rather than 10,000.
>Because, CAD-Entity must hold a respectively different attribute.
>1 CAD-Entity will be mapping to 1 Shape3D in CAD-Application.
>So, each Shape3D has different Material in test program.
>
>I had tried a code which was all Shape3D refer one Material, and change that
>one Material.
>The color change time of this case was about five seconds.
> ( Yes, a little faster than last code, but still slow )
>
>> - You may be stumbling on something j3d is doing with the rendering
>> process if it is taking so long. Have you tried calling stopRender(),
>> changing all the values, and then calling startRender() again?
>Yes, I had tried this too.
>( call stopRender() -> setDiffuseColor() -> startRender() )
>But the result didn't change, so I deleted the code.
>
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