... long long time ago ...

hi @ all ^^

so many changes since my last visit !
I used the beta2 last week and tryed to test something with the InputAdapterRenderLoop ... it is not included there, am I right ?!
So I checked out the latest trunk today and got an error:
in xith-tk org.xith3d.test.gane -> BSPGameTest ...  internal compiler error 

... got another problem with the beta2 but I want to test again before posting so if anyone knows the solution ...

Thanks, works! OK, I didn't test the texturing but changing the appearance   
Hmmm.... is something like that possible in J3D?? I can't find any examples...
It's all right if not ... 

Hi again,

I tested the PickingLibrary, works fine so far. Than I used to create an example for picking under J3D, just to compare it with xith....
and now I've got a question: why is it necessary to set the transformgroup and the element (e.g a cube) pickable = true ?? OK I know, setting it to fals means the cube is not pickable... but what is the reason for that? In J3D it seems that everything is pickable at the beginnig. Something about performance?
I don't want to criticize someone... I just want to know 

Yes, I thought so too but it causes some problems like this: java.lang.NoClassDefFoundError: javax/vecmath/Tuple3d.
So, instead spending time in this I'll copy the vecmath 
OK, I could adjust the code more and more but this is at least far from testing J3D....

So, loadModel and loadScene works so far...  but stil got a problem with texturing.
I used getShapeNodes() but it returns nothing...
The loaded File is an Object-File exported from wings3D. I exported the selected cube.
getNumChildren returns 1. So there is nothing more than the cube. What's the step catching the shape and change the texture oder material ?

Yes you are right!
I deinstalled J3D but the vecmath still remains in th jre lib....

Copying the vecmath in and out of the folder is faster than reinstalling the whole stuff.

And there it is again.... I think the problem is java3d-1_4_0_01    I installed it to compare the loaders.... after the installation the problem returned....

Don't know what J3D does during the installation but it kills something needed or it changes something... 
Seems that I had to install and deinstall it for each test.. 


No Xith problem so far   

Hi Marvin,

works fine so far. Changing appearance like color or texture is the next test  ... hope it will work ...

I exported ist from Blender, but I don't know what button I hit to cause this trouble... maybe this one with the edges ?!

What the F*** ?! *argh*

K problem solved....

I had the same Problem few weeks ago. While looking for help I found a thread where someone wrote that reinstalling the jre could fix it. So I installed the newest version and the problem was gone....

And that was exact the same! I reinstalled the 1.5.0_09 and it works now ....
But whats the reason for this ''crash'' ?? Its the second time that I use to spend some time for an unnecessary problem like that 
and on top of that it is not my fault or the fault from xith....

Seems that I have the same problem in an older code:

Exception in thread "main" java.lang.NoSuchMethodError: javax.vecmath.Matrix4f.setTranslation(Ljavax/vecmath/Tuple3f;)V
   at org.xith3d.scenegraph.Transform3D.lookAt(Transform3D.java:691)
   at org.xith3d.scenegraph.View.lookAt(View.java:436)
   at org.xith3d.scenegraph.View.<init>(View.java:778)
   at org.xith3d.render.base.Xith3DEnvironment.<init>(Xith3DEnvironment.java:796)
   at org.xith3d.render.base.Xith3DEnvironment.<init>(Xith3DEnvironment.java:839)

But I use the vecmath-kh... and the java version is the 1.5.0_09....

Thanks.... u helped me a lot

I cheked the exported files and it seems that I hit somthing weired ... I compared the export with an older file 
So the second export of the cube runs fine so far...


sorry begging for help unneeded 

Hi,

I had a lot of work but Iam finaly back ^^

At first I tried to compare the Objectloader from Java3D with the one from Xith.
In J3D it is simple said load(xy) ... returns scene -> attach it to the TranformGroup and it works
Xith now offers loadScene and loadModel. To compare it I use loadScene... and than I got an Exception:
java.lang.ArrayIndexOutOfBoundsException: 2
   at org.xith3d.loaders.models.impl.obj.FaceList$Face.configure(FaceList.java:267)
   at org.xith3d.loaders.models.impl.obj.FaceList.build(FaceList.java:206)
   at org.xith3d.loaders.models.impl.obj.OBJGroup.build(OBJGroup.java:62)
   at org.xith3d.loaders.models.impl.obj.OBJLoader.load(OBJLoader.java:165)
   at org.xith3d.loaders.models.impl.obj.OBJLoader.loadScene(OBJLoader.java:270)
   at org.xith3d.loaders.models.impl.obj.OBJLoader.loadScene(OBJLoader.java:307)

I don't know how to handle this because I used only ''scene = (Scene) ofl.loadScene("test.obj");'' ...there is nothing else...
I know that it works a few weeks ago...   

What exactly ? 

<remind> *knock knock* </remind> 

Hmm... I exported a cube with a texture from wings3D:

 # Exported from Wings 3D 0.98.35
mtllib Xith3D-Cube.mtl
o cube1
#8 vertices, 6 faces
v -1.00000000 -1.00000000 1.00000000
v -1.00000000 1.00000000 1.00000000
v 1.00000000 1.00000000 1.00000000
v 1.00000000 -1.00000000 1.00000000
v -1.00000000 -1.00000000 -1.00000000
v -1.00000000 1.00000000 -1.00000000
v 1.00000000 1.00000000 -1.00000000
v 1.00000000 -1.00000000 -1.00000000
vt 0.0000000e+0 0.0000000e+0
vt 0.0000000e+0 1.6653345e-16
vt 0.0000000e+0 2.2204460e-16
vt 0.0000000e+0 1.00000000
vt 1.6653345e-16 1.00000000
vt 1.00000000 0.0000000e+0
vt 1.00000000 1.00000000
vt 1.00000000 0.0000000e+0
vt 1.00000000 2.2204460e-16
vt 1.00000000 0.0000000e+0
vt 1.00000000 1.00000000
vt 1.00000000 1.00000000
g cube1
usemtl default
f 1/1/ 4/10/ 3/12/ 2/4/
f 1/8/ 5/11/ 8/5/ 4/2/
f 2/12/ 6/4/ 5/1/ 1/10/
f 3/6/ 7/7/ 6/4/ 2/1/
f 4/1/ 8/10/ 7/12/ 3/4/
f 6/12/ 7/5/ 8/3/ 5/9/

mtl:

# Exported from Wings 3D 0.98.35
newmtl default
Ns 100.000
d 1.00000
illum 2
Kd 1.00000 1.00000 1.00000
Ka 1.00000 1.00000 1.00000
Ks 1.00000 1.00000 1.00000
Ke 0.00000e+0 0.00000e+0 0.00000e+0
map_Kd Xith3D.png

So there is nothing else but the cube. Scene.getSceneGroup().numChildren() returns a 1. Traversing the scene should be done with getChild(0) ... correct? But I can't cast it as shape3D or something else. And I am not able to set texture, material or something in that state.
What is the alternative? I need a good loader where I can change the appearance from the loaded object. And I need a free programm that allows me to export in this file. (e.g. Blender or wings3D...).

Thx for help ^^

O.K. I tested the code from chapter 9a.
Everything seems to be all right but I got an Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException. 

Then I tested the code from 9b... the Exception is gone but I always "Pick nothing" ....

Maybe I am doing something wrong? (Maybe lol... I am sure ...)
It's a shame that I am not that deep into this material to solve the problem 

Yes I know!
That's why I dont understand that someone works with loading as BranchGroup...
Was it possible in an older version?


O.k. I try that...
Where is a documentation for traverse ? 

Actually I am getting some problems... but the day isn't over yet

Hi,

got another problem...
I tried to load a simple cube, exported from wings3D or Blender.
The loaded cube from the Blender-file is black or white depending on some settings; the wings3D-file is loadable with texture but (that's my problem) I want to change the texture or material of the cube but i can't reach the cube.
I load it that way: scene = objL.load("Test.obj");
Some posted codes load it like BranchGroup xy = null; -> null = new OBJLOader().load("xy");
I used to test it but if I try to load the object that way, I got a classCastException... 
The only thing working is loading the file as scene, but no chance to set material or texture there.
Where is the mistake? Wrong export?

thx for help

Picking works now.

I replaced PickResult pr = PickingLibrary.pickNearest(env.getRootGroup(), env.getCanvas(), pickX,pickY); by
List<PickResult> pr = PickingLibrary.pickAll(env.getRootGroup(), env.getCanvas(), pickX, pickY); from the picking-test.
And I replaced pr.getShape().getName() by
                    int i = 0;
                    for (PickResult pr: results)
                    {
                        System.out.println("  Hit (" + i++ + "): Shape3D: \"" + pr.getShape().getName() + "\", distance=" + pr.getMedialDistance()                                           + " position=" + pr.getPos());
                    }
that's from the picking-test too... 

But why is the example from xin not working?

Hi Amos,

I am working on my project at university. It's a technology research about tools, engines and more.
Anything you can use to build a simulator for mobile robotics.
And so I have to test some of these things...
There are a lot of projects that offer useful things but not all are comfortable enough.
Xith seems to be a bit further than J3D.

And at the End  I hope to implement some of my ideas with Xith....
To many ideas and not enough time  ....

I checked the PickingLibraryTest and it works fine 

Hi all,

I am new here (and finaly here ... long story ^^).
I used to test the code written in xin "chapter 9a picking" and i have some problems.
The first problem:  env.getRootBranchGroup()  seems to be wrong (?!)...  env offers getBranchGroup() is this correct?
and the second: all seems to be correct but I am not able to pick the rotating cube! -> "You just picked nothing!"
I added cube.setPickable(true) but it is still the same 




PS: Thanks to Marvin for support via e-mail (i wasn't able to login here )