Vector Rotation

#1 Here's an easy way to rotate a vector based on Euler parameters (X Y Z axis rotation) in script:

Since you mentioned muzzle, I assume you're doing this in the onFire method of a ShapeBaseImage (so %data, %obj, and %slot are given).

%vector = %obj.getMuzzleVector( %slot );
%xAngle = 0;
%yAngle = 0;
%zAngle = 90 * 3.1415926 / 180;

%matrix = MatrixCreateFromEuler( %xAngle SPC %yAngle SPC %zAngle);

%resultVector = MatrixMulVector( %matrix, %vector );

Remember the angle needs to be in radians.

#2 Thanks a lot luigi!

#3 One would advise your degrees-to-radians pi / 180 be predefined somewhere, save you that calculation each time.

#4 Agreed, I just had it there for clarity's sake.