Great, I got it to work now. Thank you for your fast and accurate help!

Yes you are correct, I'm viewing them from the top. And I think the 45° rotation of the primitive might explains my problem. When turning the cubes by 45° in my mind and then also turn the camera by 45° it should be correct. Is there a way to create a cube without the pre-rotation?

I now rotate the cube when creating it (and before translating it) , but this feels a bit off. Or is it the best way to deal with the Problem? And it looks odd as well.




This is the camera setting:
Camera cam = world.getCamera();
cam.setPosition(20, -60, 20);
cam.lookAt(game.getFields().getFirst().getTransformedCenter());

@Second post:
No there shouldn't be any relations and I create them all in a LinkedList. Thank you for the example, I will have a look at it!

Since I'm actually about to learn how to use the engine, I tried to order 4 cubes in a pattern shown below in the "intended" image. For doing this I first created an object which extends the Object3D class:
public class Field extends com.threed.jpct.Object3D

Then I overrided the constructor:

public Field(int posX, int posY, Field next){
        super(Primitives.getCube(10));
        setXY(); //<-stuff for the getX / getY functions
matrix.translate(getX()*30,0 , getY()*30);
this.setTranslationMatrix(matrix);
}

In onSurfaceChanged I add the 4 fields to the scene:


for (com.theDiceGame.Field f : fields){
f.strip();
f.build();
System.out.println("Translation: "+f.getTranslation());
world.addObject(f);
}

That seems to work. In the simulator will be 4 cubes visible. But they are not positioned as I intended them to.

How I intended them to be positioned.


How they are positioned

The System.out reads like this, which should be the correct translations:
Translation: (0.0,0.0,0.0)
Translation: (30.0,0.0,0.0)
Translation: (30.0,0.0,30.0)
Translation: (0.0,0.0,30.0)

I also checked the rotation (because It looks like they where rotated by 45° and then translated) but the rotation Matrix is 0 except on the diagonal which should be a zero rotation.

Thanks to all of you. I where now able to do both.

Thanks for the answer but DDMS isn't working right. (It starts with an exception and won't show any data while the emulator is running) I believe you, that DDMS is more useful and I will try to get it running, but right now I could fix my problem just with the logfile.

Doesn't anybody know where it is?

Hello everyone,

since I'm starting to get a bit used to Android I wanted to write a little 3D application. For debugging reasons I need to get some messages which I tried to log.  (like this one: Logger.log("Translation: "+f.getTranslation())

My problem is, I don't know where the logfile is saved. I looked everywhere in my project (since it is not big I finished quickly) and after that looked in the documentation for a possibility to set my own path. Can you tell me where that log-file is located?

Thanks,
gucky