Hello all. I have a problem with AxisAngle4f class, i don't understand
how to use it very well, i can make it work as i want but i don't know
why it works in that way. I am using it to set the axis of rotation of a
RotationInterpolator. Here is my piece of code:
//--------------
AxisAngle4f faxisOfRot = new
AxisAngle4f(1.0f,0.0f,0.0f,(float)Math.PI/-2.0f);
Transform3D eje = new Transform3D();
eje.set(faxisOfRot);
Alpha rotationAlpha = new Alpha(-1, 4000);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objSpin, eje,
0.0f, (float) Math.PI*2.0f);
//------------------
The scene is just a colorcube.
With this axis my cube is CW rotating arround the z-axis... Why??
if I set the angle to "(float)Math.PI/2.0f" the cube rotates arround the
same angle but in CCW.
and if the angle is 0.0f then the rotation is arround y-axis.
I don't understand how it is working, i can do what i want, for example
a rotation arround x-axis just trying changin the angle value to find
out what i want, but i would like to know how it really works. I think
that you can set an axis just with one vector, What is the angle
argument for? maybe is a basic geometry question, i don't know, but i
will be very glad if someone could explain it to me.
Thanks in advance.
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