Re: [JAVA3D] Transformations

[ahmet balci]

 Do you mean ; transform.setScale( scalingFactor ) and worldTrans.setTransform(transform) and then transform.rotX(RotA); worldTrans.setTransform(transform) sceneRoot.addChild(worldTrans)?

 If it is so, I think I have tried alternate ways of it. But you are right at I am losing the scaling. But couldn't manage to shrink the model to fit in the window while making transformations on it.

                 

Alessandro Borges <[EMAIL PROTECTED]> wrote:

Maybe I am telling you a stupid thing, but I thing you are losing the scaling.

 

You have :

Bg(root) -> TG (scale & Rotating) -> scene.

 

try

Bg(root) -> TG(scale) - TG(rotate) -> scene

 

Alessandro

----- Original Message -----

From: ahmet balci

To: [EMAIL PROTECTED]

Sent: Thursday, July 17, 2003 11:21 AM

Subject: [JAVA3D] Transformations

 Hi,
 I had been making transformations within a 3DS model.
 I can display the model at the canter of the window easily.
 But when I try to make transformation (rotation or translation)
 model becomes very huge that I can only see a part of it at the window.
 Here is the code I use;

////////////////////////////////////////////////////////////////////////////////////////////////////////////
   Transform3D transform = new Transform3D();
                 transform.setScale( scalingFactor );
                 transform.setTranslation( new Vector3f( 0,0,1));
                 TransformGroup worldTrans   = new TransformGroup(transform);
                 worldTrans.setCapability(worldTrans.ALLOW_TRANSFORM_READ);
                 worldTrans.setCapability(worldTrans.ALLOW_TRANSFORM_WRITE);
                 worldTrans.setCapability(worldTrans.ENABLE_PICK_REPORTING);
                 sceneRoot.addChild(worldTrans);

                 Alpha rotA=new Alpha();
                 RotationInterpolator rotator=new RotationInterpolator(rotA,worldTrans,transform,0,1);
                 BoundingSphere b=new BoundingSphere();
                 rotator.setSchedulingBounds(b);

/* Same thing occurs when I use rotX() or rotY() instead of RotationInterpolator
   I mean model becomes very huge
*/

                 worldTrans.addChild(rotator);

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

 Could someone tell me why the sizes of the model that I defined changes
 when I try to make transformations? Is there anything that I should do
 to preserve to predefined size of the model while I make transformations?

 Thanks for your help in advance............................

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