unity-rotation-converter

Convert between euler angle rotations with a specific axis rotation order, quaternions and rotation matrices.

Go to https://valerdragos.github.io/unity-rotation-order/ for a WebGL build of the example project.

Inspiration

I got a lot of inspiration from: https://github.com/gaschler/rotationconverter/. Like in that project, I've used the three.js library math to create the converter.

Usage

The object used for converting is the Euler struct. The angle values are expressed in degrees.

There is also a UnityExtensionMethods script that contains Quaternion and Matrix4x4 extension methods for conversion to Euler.

Euler euler1 = new Euler(x: 31, y: 126, z: -55, Euler.RotationOrder.XYZ);

        // Convert from Euler.
Matrix4x4 matrix = euler1.ToRotationMatrix();
Quaternion quaternion = euler1.ToQuaternion();

        // Convert to Euler.

        // Using setters.
Euler euler2 = new Euler(Euler.RotationOrder.YZX);
euler2.SetFromRotationMatrix(matrix);
Euler euler3= new Euler(Euler.RotationOrder.ZXY);
euler3.SetFromQuaternion(quaternion);

        // Or using static methods.
euler2 = Euler.FromRotationMatrix(matrix, Euler.RotationOrder.YZX);
euler3 = Euler.FromQuaternion(quaternion, Euler.RotationOrder.ZXY);

        // Or using extension methods.
euler2 = matrix.ToEuler(Euler.RotationOrder.YZX);
euler3 = quaternion.ToEuler(Euler.RotationOrder.ZXY);