Do YOU always forget your rotation matrices when trying to do graphics and videogam programming? Are you annoyed that it isn't possible to read the wikipedia page for rotation matrices without using javascript? Are you always making errors when converting between matrix representation and direct coordinate forms and you don't really need the matrices anyway? Try the awsome new deals on THIS WEBPAGE!
x' = x*cos(a) - y*sin(a) y' = x*sin(a) + y*cos(a)
x' = -y y' = x
x' = -x y' = -y
x' = y y' = -x
x' = x y' = y*cos(a) - z*sin(a) z' = y*sin(a) + z*cos(a)
x' = x*cos(a) + z*sin(a) x' = y z' = -x*sin(a) + z*cos(a)
x' = x*cos(a) - y*sin(a) y' = x*sin(a) + y*cos(a) z' = x
Here a is the angle for the X axis and b is the angle for the Y axis. Also remember to flip the Y coordinate afterwards if the Y axis in world space goes in the opposite direction of the Y axis in screen space.
x' = x*cos(b) + y*sin(a)*sin(b) + z*cos(a)*sin(b) y' = y*cos(a) - z*sin(a) z' = -x*sin(b) + y*sin(a)*cos(b) + z*cos(a)*cos(b)