OpenEuphoria

Re: matrix rotation.

• Posted by WeedenSoft Technologies <theskaman at MINDSPRING.COM> Jan 05, 1997
• 1620 views

I quote this from the Black Art of 3D Game Programming by Andrew LaMothe
(great book, highly recomended)...to adjust angle along z axis (up/down)
new_direction[x] = direction[x]*cos(angle) - direction[y]*sin(angle)
new_direction[y] = direction[x]*sin(angle) + direction[y]*cos(angle)

to adjust along the x axis (forward/backward)
new_direction[y] = direction[y]*cos(angle) - direction[z]*sin(angle)
new_direction[z] = direction[y]*sin(angle) + direction[z]*cos(angle)

Hope this helps,
Adam Weeden
WeedenSoft Technologies