How to get Euler angles in RealityKit?

How to get Euler angles in RealityKit?

Answered by arthurfromberlin in 728802022

Possible Solutions:

public extension Transform {
    // SceneKit Detour
    var eulerAnglesQuickAndDirty: SIMD3<Float> {
        let node = SCNNode()
        node.simdTransform = matrix
        return node.simdEulerAngles
    }

    // From: https://stackoverflow.com/questions/50236214/arkit-eulerangles-of-transform-matrix-4x4
    var eulerAngles: SIMD3<Float> {
        let matrix = matrix
        return .init(
            x: asin(-matrix[2][1]),
            y: atan2(matrix[2][0], matrix[2][2]),
            z: atan2(matrix[0][1], matrix[1][1])
        )
    }
}
Accepted Answer

Possible Solutions:

public extension Transform {
    // SceneKit Detour
    var eulerAnglesQuickAndDirty: SIMD3<Float> {
        let node = SCNNode()
        node.simdTransform = matrix
        return node.simdEulerAngles
    }

    // From: https://stackoverflow.com/questions/50236214/arkit-eulerangles-of-transform-matrix-4x4
    var eulerAngles: SIMD3<Float> {
        let matrix = matrix
        return .init(
            x: asin(-matrix[2][1]),
            y: atan2(matrix[2][0], matrix[2][2]),
            z: atan2(matrix[0][1], matrix[1][1])
        )
    }
}
How to get Euler angles in RealityKit?
 
 
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