It seems like an easy problem but I somehow didnt got to the solution. I need the Maths to change the Vector based on Euler angles.
I have an direction Vector- for example: Showing Forward: (0,0,1)
I have 3 Euler Angles (X,Y,Z) for example like this: (0°,180°,0)
Which means: It rotates back -
Now if I add that to the direction Vector- I want my direction Vector to show Backward (0,0,-1)
I tried last night and did not came up to a solution how to do the maths for this.
Anyone here knows the math to solve this?