Johannes Buchner

I was working on a bit of software that should show a vector (3D) on the screen while I can choose the rotation of it.

So I thought: Rotate around each of the axis with the angles, then project it (just cut off the last line of the vector).
This is my code:

P1 = [
[cos(p),sin(p),0],
[-sin(p),cos(p),0],
[0,0,1]
]
P2 = [
[1,0,0],
[0,cos(t),sin(t)],
[0,-sin(t),cos(t)],
]
P3 = [
[cos(x),0,sin(x)],
[0,1,0],
[-sin(x),0,cos(x)],
]
return mmult(mmult(P3,mmult(P2,P1)),v)

p stands for phi, t for theta, and x for … just x. Or xi.