Thanks

for (Animated3D a : modello)
{
a.setTexture("vincent");
a.discardMeshData();
a.setVisibility(false);
}



//calcoliamo le grandezze del boundingbox del nostro modello

float[] bb = renderer.calcBoundingBox();
float box_h = (bb[3] - bb[2]); // ninja height
// ora si crea una telecamera e devo capire come posizionarlo
Camera cam = world.getCamera();
cam.setPosition(0,-box_h/2,0);
cam.moveCamera(Camera.CAMERA_MOVEOUT, 70);  //la sposto indietro
cam.lookAt(new SimpleVector(0, -box_h/2, 0));
//rivedere la direzione giusta della camera

//ora si crea un vettore per indirizzare il sole
new Light(world).setPosition(new SimpleVector(0, -box_h/2, box_h));

currentPose = modello.get(0).getSkeletonPose();

skeletonDebugger = new SkeletonDebugger(currentPose,10f, (short)0);
skeletonDebugger.addToWorld(world);
skeletonDebugger.setVisibility(true);


I thought that skeletondebugger was used to keep the skeleton visible , but now I think that I am not really understanding what skeletondebugger is used for .

currentPose = modello.get(0).getSkeletonPose();
skeletonDebugger = new SkeletonDebugger(currentPose);
skeletonDebugger.setVisibility(true);
skeletonDebugger.addToWorld(world);
what do it does ?


And another doubt why on android the models is visible also if i'm not used display() ? O.o

Hi
I would like to see skeleton of my human models, for do that in onDrawFrame I have only used "drawWireframe"

@Override
public void onDrawFrame(GL10 gl)
{
if (frameBuffer == null)
return;

frameBuffer.clear(back); //ripulisco il frameBuffer e lo setto con il colore di sfondo voluto
world.renderScene(frameBuffer);
world.drawWireframe(frameBuffer, wireFrameColor, 1, true);
//world.draw(frameBuffer);
//frameBuffer.display();

}
And in onSurfaceChanged I have did this  :


private AnimatedGroup modello;

@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
Logger.log("onSurfaceChanged");
if (frameBuffer != null) {
frameBuffer.dispose();
}
frameBuffer = new FrameBuffer(gl, width, height);

if (master == null) { 


world = new World(); 


Resources res = getResources();
try {

modello = BonesIO.loadGroup(res.openRawResource(R.raw.vincent));
modello.addToWorld(world);
}
catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}

world.setAmbientLight(127, 127, 127);
world.buildAllObjects();

TextureManager.getInstance().flush();
Texture texture = new Texture(res.openRawResource(R.raw.vincent_texture));
texture.keepPixelData(true);
TextureManager.getInstance().addTexture("vincent", texture);

for (Animated3D a : modello)
{
a.setTexture("vincent");
a.discardMeshData();
}



float[] bb = renderer.calcBoundingBox();
float box_h = (bb[3] - bb[2]);

Camera cam = world.getCamera();
cam.setPosition(0,-box_h/2,0);
cam.moveCamera(Camera.CAMERA_MOVEOUT, 70); 
cam.lookAt(new SimpleVector(0, -box_h/2, 0));

new Light(world).setPosition(new SimpleVector(0, -box_h/2, box_h));

currentPose = modello.get(0).getSkeletonPose();
skeletonDebugger = new SkeletonDebugger(currentPose);
skeletonDebugger.setVisibility(true);
skeletonDebugger.addToWorld(world);


MemoryHelper.compact();


if (master == null) {
Logger.log("Saving master Activity!");
master = MainActivity.this;
}

}


int num=modello.get(0).getSkeleton().getNumberOfJoints();
int dim=modello.getSize();
Logger.log("numbers of joints ="+num+",size="+dim);

}

But the skeleton doesn't appear. 
The log the result is
"numbers of joints=67,size=1"

To this message I have attached the skeleton xml

thanks anyway 

private void targetJoint(SkeletonPose pose, int jointIndex, SimpleVector bindPoseDirection,
    SimpleVector targetPos, final float targetStrength) {
   
        final int parentIndex = pose.getSkeleton().getJoint(jointIndex).getParentIndex();

        // neckBindGlobalTransform is the neck bone -> model space transform. essentially, it is the world transform of
        // the neck bone in bind pose.
   1-     final Matrix jointInverseBindPose = pose.getSkeleton().getJoint(jointIndex).getInverseBindPose();
        final Matrix jointBindPose = jointInverseBindPose.invert();

      .........................
       
        // now remove the global/world transform of the neck's parent bone, leaving us with just the local transform of
        // neck + rotation.
        subGlobal.matMul(jointBindPose);
     2-   subGlobal.matMul(pose.getSkeleton().getJoint(parentIndex).getInverseBindPose());

      .........................
    }
But the inverseBindPose matrix is not the same for all the bones ?

In 2 can I use the inverseBindPose calculated in 1 ? No ? why ?

I searched into the web, but I didn't found an explanation of the use of matrix bindpose , matrix inverse bind pose and the relation between them.

EDIT : I found this explanation http://www.gamedev.net/topic/571044-skeletal-animation-bonespace/ . It is wrong ?

But remain this doubts :

        final Matrix jointInverseBindPose = pose.getSkeleton().getJoint(jointIndex).getInverseBindPose();
        final Matrix jointBindPose = jointInverseBindPose.invert();

jointInverseBindPose ok, now , maybe I understand whats is it.
But why do we do this : jointBindPose =  jointBindPose = jointInverseBindPose.invert(); ?
in the precedent link this thing there isn't ..


Other parts of code that I don't really understand are :
        // Get a vector representing forward direction in neck space, use inverse to take from world -> neck space.
        SimpleVector forwardDirection = new SimpleVector(bindPoseDirection);
        forwardDirection.rotate(jointInverseBindPose);

        // Get a vector representing a direction to target point in neck space.
        SimpleVector targetDirection = targetPos.calcSub(pose.getGlobal(jointIndex).getTranslation()).normalize();
        targetDirection.rotate(jointInverseBindPose);


in particular why do we use jointinversebindpose to rotate the forwarDirection and the targetdirection ? to take from world to neck space don't we need to multiply vector to jointinversebindpose ?

And I don't understand this : pose.getGlobal(jointIndex).getTranslation()
Can you give me a hand ?

Hi
In this example :
http://www.jpct.net/wiki/index.php/Simple_Camera_Movement

I don't understand this passage very well :

if (touchTurn != 0) {
SimpleVector backVect = cube.getTransformedCenter();
backVect.scalarMul(-1.0f);
rotationmatrix.translate(backVect);
rotationmatrix.rotateY(touchTurn);
rotationmatrix.translate(cube.getTransformedCenter());
touchTurn = 0;
0- I create a matrix rotationmatrix = new matrix();
1- I create a vector to centerposition of my model
2- I multiply this vector for -1 , why ?
3- I apply the traslation created to my rotationmatrix 
4- I rotate it around the Y axis
5- I traslate my matrix to center of my model, why ?

if (touchTurnUp != 0) {
transformMatrix.translate(new SimpleVector(0, -touchTurnUp * 30,0));
touchTurnUp = 0;
}
transformMatrix is a mistake, right ? I have to traslated the rotationmatrix, right ? But why I have to do that ? The rotation round the Y axis is not enough ?

and at last :
transformMatrix.setIdentity();

fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();


}
I don't understand why I have to do setidentity .


Thanks

All the object after the inserting is positionated in 0,0,0 ?

For example when I use getcamera() the camera initially is in 0,0,0 ?

I try to ask :
Is there an example where the model is scaled when the smartphone is rotated from portrait to landscape view ?

Now I'm trying to experiment with direction,simplevector and rotation matrix