(no subject)

[Nibras]

Hello,

I've been trying to change the background color of the ImageJ 3D Viewer
which am using in my application. I have not been able to do so so far.

I tried a few options and they seem to fail.
1) Add a Background() to ImageUniverse.getScene() fails with
AccessRestrictionExcetion,
2) Add a Background() to a BranchGroup() and add it to
ImageUniver.getScene() has no effect.
3) Create Content using ContentGenerator. Add Background() directly or via
BranchGroup() and add it via ImageUniverse.addContent() has no effect.
4) Create Content using ContentGenerator. Add it to BranchGroup() after
adding a Background() and then add BranchGroup via
ImageUniverse.addBranchGraph(). No effect and image doesn't display.

I realized that I maybe able to add a Background if I rewrite the original
scene instantiation code to add a Background as soon as it's added.
However, I couldn't find any licensing information attached to the source.
Will I be able to modify and reuse the code?

The application am developing is an academic project.

Thanks in Advance!

Best of Regards,
Nibras.

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[Benjamin Schmid-2]

Hi Nibras,

On 10/20/14 1:23 PM, Nibras wrote:

> Hello,
>
> I've been trying to change the background color of the ImageJ 3D Viewer
> which am using in my application. I have not been able to do so so far.
>
> I tried a few options and they seem to fail.
> 1) Add a Background() to ImageUniverse.getScene() fails with
> AccessRestrictionExcetion,
> 2) Add a Background() to a BranchGroup() and add it to
> ImageUniver.getScene() has no effect.
> 3) Create Content using ContentGenerator. Add Background() directly or via
> BranchGroup() and add it via ImageUniverse.addContent() has no effect.
> 4) Create Content using ContentGenerator. Add it to BranchGroup() after
> adding a Background() and then add BranchGroup via
> ImageUniverse.addBranchGraph(). No effect and image doesn't display.
>
> I realized that I maybe able to add a Background if I rewrite the original
> scene instantiation code to add a Background as soon as it's added.
> However, I couldn't find any licensing information attached to the source.
> Will I be able to modify and reuse the code?
>
> The application am developing is an academic project.
>

The 3D Viewer's scene already contains a Background object, the color of
which you can change. This can be done from the GUI, or you can do it
programmatically. Executor.changeBackgroundColor() is called if you click
on View->Change background color. It also shows how you can use it from
within your own code:

https://github.com/fiji/3D_Viewer/blob/master/src/main/java/ij3d/Executer.java#L786

Best wishes,
Bene

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