I was looking at this and had the following questions
have you tried making a Transform3D object when your class is first created?
something like
constructor()
{
mTransform3D = new Transform3D(); //where mTransform3D is a class
variable
}
then, in your following method
->
public void modifyTransform(Vector3d v) // often called
{
//mya addec code here
mTransform3D.setIdentity();
//Transform3d trsf = null; //do not set this to null, because otherwise
your will need to create
//a new object
in the get transform method. The get transform method gets a new object
//if the
incoming transform is null (i think) because it is setting the values of the
//incoming
transform3d with the TransformGroup's transform
//tg.getTransform(trsf); // problem here ....
tg.getTransform(mTransform3D);
mTransform3D.setTranslation(v);
tg.setTransform(mTransform3D);
//so, for this, you should have no creation of any objects, just setting
of values
//trsf = setTranslation(v); //this does not work
}
use the setIdentity method for when you are using transforms. This is just like
in OpenGL when you push a matrix and then load an identity matrix. Always must
keep things homogenous =)
Scott
Scott Decker
Research Scientist
Pacific Northwest National Labs
[EMAIL PROTECTED]
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