Quaternion.Euler problem

Unity Engine
1

Hi I’m working on something that’s placing waypoints but I have a issue with using Quaternion.Euler. I’m setting positions of way points and using the direction from the first point then rotating them after.

I set the inital direction as forward since that’s the direction I want to create the way points in

 nextDirection = Vector3.forward;

Which returns 0,0,1

Then I use Quaternion.Euler to get a rotation,

 nextDirection = Quaternion.Euler(50, 0, 0) * nextDirection ;

Then I get the value (0, -0.8, 0.6) and getting a value on the Y axis instead of the X axis, I’m just wondering if I’m doing in wrong? When I switch the x and y values it works correct but it shouldn’t be the case.

2

nextDirection is a vector 3, and Quaternion.Euler return a quaternion so you want get what you expect if you multiply them.

what are you trying to do?

3

I’m confused as to why you are mixing quaternions and vector3. Perhaps what you’re after is more like this?

Quaternion prev = Quaternion.Euler(Vector3.forward);
Quaternion next = Quaternion.Euler(50.0f, 0.0f, 0.0f) * prev;
prev = next;
4

I’m just trying to add the next way point at a 50.degree angle based on the previous waypoint here’s my code

This is just where I add the first control point and note the direction I want to spawn them in

nextDirection = Vector3.forward; // direction I want to create way points in
AddControlPoint(Vector3.zero); // my method for adding control points

Vector3 lastpos = ControlPoints[ControlPoints.Count - 1].localPosition;
nextDirection = Quaternion.Euler(50, 0, 0) * nextDirection;
new Vector3 nextPos = lastpos + nextDirection * controlPointDistance;// controlPointDistance is used for the distance between control points
5

I’m also trying to place the control points in position based on the rotation , I’m not that great at using Quaternion :sweat_smile: