3D Objects and Rotation Amount Respective of Z Value

Hi All

I am creating a simple program that has a ball object and a player object. The player has an arm that must raise based on the height of the ball. Eg if the ball starts at point 600 on the z axis, then the arm must raise so that its furthest point is at point 600 also on the Z axis.

I am using a translation array of [cos(z) 0 sin(z); 0 1 0; -sin(z) 0 cos(z)]; Where Z = pi/4 to give me a rotation of 45 degrees in the arm to get close to the ball. How can A) change this so i can specify degrees such as 60, 30 etc and B) is there a way to automatically determine the degree needed based on my balls height? Im starting to think along the lines of a complex if statement to replace Z with a degree if the Z value of my ball is within a certain range.

Many Thanks

Andrew

Answer 1

[bym]

to specify degrees use cosd() sind() in your matrix

[Andrew]

thats solved one of the problems, thanks :)

[bym]

I'm not clear on the second question, it seems a trigonometry problem, but I think I am missing something