Hallo, Tebjan Halm hat gesagt: // Tebjan Halm wrote:
if i understand your patch, you just have to calculate the angles of the spherical coordinates of your second point.
r = length (of your diff vector)
angle 1: atan2( y, z )
angle 2: acos( z/r )
angle3: 0
and remember, two angles are always sufficiant in 3d space ;)
This sounds good and thank you a lot for this clarification. Now with my first rotation around the Z-axis I basically do the transformation to polar coordinates: distance r and angle inside the XY-plane. IIR I then need to rotate again by the angle, that the difference vector has to the xy-plane (often called Phi and basically it is "angle 2")
However while I think I know how to find the correct angle, I still have difficulties to find the *axis* to rotate around. In (my) theory I would need to rotate around the vector, which is the result of the outer/cross product of the difference vector and the z-axis, because that is the vector which is rectangular to both the diff. vector and z-axis. However I already tried that, and it still looks very wrong.
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__