How to rotate a model in Release 2.0?

[noelrocha]

Hi Guys,

Im trying to rotate my model with no lucky.

I've tried using two ways:

Using "glRotatef(gDrawRotateAngle, 0.0f, 1.0f, 0.0f);". It makes the model rotate, but it rotates until get out of the screen and get back in the other side. Using glRotatef doesn't works well in Release 1.0 neither Release 2.0

The following code works in Release 1.0, but doesn't in Release 2.0

in ARView.m method drawView I've added:

Code: Select all

   float *currentPose;
   float newPose[16];   
   currentPose = [arViewController.virtualEnvironment objectPose:0]; 
   EdenMathRotateMatrix(newPose, currentPose, DTOR*gDrawRotateAngle, 0.0f, 1.0f, 0.0f);
   [arViewController.virtualEnvironment setObjectPose:0 matrix:newPose];


in VirtualEnvironment I've added:

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- (void) setObjectPose:(int)objectIndex matrix:(float *)T{
    memcpy(((VEObject*)[objects objectAtIndex:objectIndex]).pose.T, T, sizeof(float) * 16);
}

- (float *)objectPose:(int)objectIndex {
    return (((VEObject*)[objects objectAtIndex:objectIndex]).pose.T);
}


any hint?

Thanks in advanced,

Noel

[noelrocha]

I've tried to copy the example in ARApp that rotates the cube, but it doesn't work well.

Using glTranslate and glRotatef works, but the rotation ray is huge and the model get out of the screen.

Thanks,

Noel

[noelrocha]

Im still trying to rotate my model in the Release 2.0.

doesnt nobody else have this issue before?

[philip_lamb]

Hi Noel,

In release 2.0, the way updates work is changed. Now, during VirtualEnvironment's init, it registers the VEObject classes/subclasses with NSNotification "ARMarkerUpdatedPoseNotification". So each time a new pose is calculated, "markerUpdatedPose" is called in the VEObject. The default implentation in VEObject.m just copies the pose from the notifying object into itself by calling setPose.

So if you want to also allow the object to be rotated independently relative to the marker, you could modify the markerUpdatedPose method, something like this:

Code: Select all

- (void) markerUpdatedPose:(NSNotification *)notification
{
    ARPose newPose;

    EdenMathRotateMatrix(newPose.T, [((ARMarker *)[notification object]) pose].T, DTOR*gDrawRotateAngle, 0.0f, 1.0f, 0.0f);
    [self setPose:newPose];
}


[kohdesmond]

What shall i do in order to allow the model to rotate??