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This function returns a 2D vector rotated a specified number of degrees around the origin.
[vector2D, angle] call BIS_fnc_rotateVector2D
Parameters:
Returns: Array - new vector
[[5,3], 60] call BIS_fnc_rotateVector2D;//Returns[-0.0980766,5.83013]
BIS_fnc_crossProduct · BIS_fnc_magnitudeSqr · BIS_fnc_vectorFromXToY
Be careful when using this function in conjunction with getDir or BIS_fnc_dirTo, which return a clockwise angle, while the rotation is done counterclockwise as per trigonometric conventions.
To counter this, simply negate their output:
[[0,1,0], -(getDir _object)] call BIS_fnc_rotateVector2D;
[[0,1,0], -([_unit, _vehicle] call BIS_fnc_dirTo)] call BIS_fnc_rotateVector2D;