Hi Kelvin,
well, by using v1.2.1 beta2 I had my textures back, which solved my original
problem, but elsewhere in my app I saw changes that i've not seen before: on
pages unrelated with the textured object, I lost complete subtrees out of my
scenegraph ... I related this to some bugs in the new buglist, like for
instance #4399760, but am not too sure about that; it may be that part of my
code reacts differently to the changes and improvements in the latest Java3D
beta. Anyways, paired with a our project decision to use Java SDK/JRE 1.2.2
and not 1.3, I decided to go back to the latest final release of Java3D,
v1.2. Our IDE runs Java 1.1.7 and an app build with Java3D 1.2.1 b2 wouldn't
start in this environment; in a test setup with JRE 1.3, it started but
showed the scenegraph with lost subtrees, mentioned earlier. In the docs of
v1.2.1 b2 recommends usage of JRE1.3, I can see that :-).
Back to the textures then: i have not isolated the problemcode so I'll just
describe what happens here: I may have some workaround fixed: i have several
pages, which share a static canvas3d and one scenegraph. The pages can be
separated in ones which do show the textured plane (representing a square
area with a depth-survey) and ones which do not show this plane. The plane
is in a subtree rooted by a Switchnode, somewhere in the scenegraph. I
toggle the plane when switching pages by means of the Switch node. Now when
switching between two pages which both show the textured plane, the texture
disappears; switching to a page with the same view of the plane, the texture
does not show. Now if I switch to a page which doesnot show the plane
subtree, thus which swites of the subtree and then switch back to a page
which shows the plane the texture will reappear again. So, uoy say, it is
the switch, try force this by switching it off and on every time you enter
such a page; I tried this but it isn't working yet ... but I'll try this
direction a little harder.
I think it may be related to updating live or off/on-screen data and/or
geometry; i'm guessing though: elsewhere in my app I have dynamic geometry
build of reference type point data, which changes according settings in some
GUI panel or calculationmodel data. Using Java3D v1.2 if I changed offscreen
data and geometry, it would not show changes when the page was switched to a
view on this geometry. Changing this geometry when onscreen works fine.
Using v1.2.1 b2 it worked as expected (also offscreen), as did the textured
plane.
Then the problem may also be related to the mixing of the Java3D thread
and the Swing thread, or so it seems; not too sure about this one either,
but I had some work getting the JPanels (in a JTabbedPane) and the static
Canvas3D to work.
Then I may yet have to delve in some unexplored functionality of Java3D,
like offscreen rendering e.a. But right now I will fiddle with the switches
some more.
thanks for your attention, keep up the good work!
Harry
> -----Original Message-----
> From: Kelvin Chung [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, March 02, 2001 7:41 PM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] disappearing texture
>
> Hi Harry,
>
> What problem did you encounter when using v1.2.1 beta ?
> Please send us a test case for investigation. I don't know
> if there is workaround for this without using v1.2.1 beta2.
>
> Thanks.
>
> - Kelvin
> --------------
> Java 3D Team
> Sun Microsystems Inc.
>
> >MIME-Version: 1.0
> >Date: Fri, 2 Mar 2001 11:18:09 +0100
> >From: "Stedum, Harry van" <[EMAIL PROTECTED]>
> >Subject: Re: [JAVA3D] disappearing texture
> >To: [EMAIL PROTECTED]
> >
> >Hi, after my initial joy over solving this problem using the v1.2.1
> beta2, I
> >soon discovered new problems were introduced, but since this is a beta, i
> >can perfectly understand that. Part of it has to do (or so it seems) with
> >the use of a specific Java SDK/JRE. I read 1.3 is recommendend, but in my
> >project we have to use 1.2.2. I'll have to use the latest final release
> of
> >Java3D then, v1.2. Now, could you or anyone suggest a workaround for the
> >disappearing textures; maybe shed some light on how it is fixed in the
> >newest beta such that I can fix something up myself? That would help me
> >greatly!
> >
>
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