[SOLVED] Get Euler angles as displayed in inspector

Unity Engine
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1

Hi, I’m not sure in which category to put this question so if it’s not in the right place, tell me and I’ll move it.

In my game I need to access the Euler angles of an object as they are displayed in the editor.
Accessing transform.eulerAngles works most of the times, but I have an object that has (90, 0, 90) as Euler angles displayed in the inspector. When I use transform.eulerAngles on this object, I get (90, 270, 0). That is a problem since I’m using that value in a shader, and there is a big difference between the two vectors.

How can I turn the value I get from transform.eulerAngles into the value I see in the inspector ? Without using UnityEditor functions since I need it to work in the build.

My testing script :

[SerializeField] private Vector3 euler;

        [Button]
        public void Test()
        {
            euler = transform.eulerAngles;
            Debug.Log($"Euler : {transform.eulerAngles}");
        }

9449864--1326521--upload_2023-11-4_11-46-25.png

The vector used in the shader :
9449864--1326524--upload_2023-11-4_11-47-5.png

Result with Euler angles of (90, 270, 0) in the shader :
9449864--1326527--upload_2023-11-4_11-49-15.png

Expected result with Euler angles of (90, 0, 90) in the shader :
9449864--1326530--upload_2023-11-4_11-49-48.png

2

That “pretty human numbers” functionality is in the editor inspector for Transforms.

Generally don’t use eulerAngles. Here’s why:

All about Euler angles and rotations, by StarManta:

https://starmanta.gitbooks.io/unitytipsredux/content/second-question.html

1 Like
3

Thanks for this link, it’s really insightful !
Indeed Euler angles aren’t reliable, but there is no quaternion rotation in Shader Graph, hence why I wanted to use Euler angles.
In your link, they suggest using Quaternion.AngleAxis instead, and that’s what I did, and it works perfect!!

Instead of using material.SetVector(“_EulerAngles”, transform.eulerAngles), I instead do this :

transform.rotation.ToAngleAxis(out float angle, out Vector3 axis);
material.SetVector("_RotationAxis", axis);
material.SetFloat("_Angle", angle);

And I changed my Shader Graph to simply apply a single rotation of “angle” around “axis” like so :
9449978--1326563--upload_2023-11-4_13-54-35.png

This created exactly the result I wanted, thanks a lot!!

1 Like