Unity-Technologies/UnityCsReference · error · ArgumentException

poseCurve '{0}', rotationCurve '{1}', heightCurve '{2}' and

Error message

poseCurve '{0}', rotationCurve '{1}', heightCurve '{2}' and positionCurve '{3}' Length must be equals.

What it means

Thrown by MuscleClipUtility.CalculateQualityCurves when the four quality-curve arrays (poseCurve, rotationCurve, heightCurve, positionCurve) do not all share the same Length. The native call expects equally-sized output buffers.

Source

Thrown at Editor/Mono/MuscleClipUtility.bindings.cs:47

    internal struct QualityCurvesTime
    {
        public float fixedTime;
        public float variableEndStart;
        public float variableEndEnd;
        public int q;
    }

    [NativeHeader("Editor/Src/Animation/MuscleClipQualityInfo.h")]
    internal class MuscleClipUtility
    {
        [FreeFunction]
        extern internal static MuscleClipQualityInfo GetMuscleClipQualityInfo([NotNull] AnimationClip clip, float startTime, float stopTime);

        internal static void CalculateQualityCurves(AnimationClip clip, QualityCurvesTime time, Vector2[] poseCurve, Vector2[] rotationCurve, Vector2[] heightCurve, Vector2[] positionCurve)
        {
            if (poseCurve.Length != rotationCurve.Length || rotationCurve.Length != heightCurve.Length || heightCurve.Length != positionCurve.Length)
            {
                throw new ArgumentException(string.Format(
                    "poseCurve '{0}', rotationCurve '{1}', heightCurve '{2}' and positionCurve '{3}' Length must be equals.",
                    poseCurve.Length, rotationCurve.Length, heightCurve.Length, positionCurve.Length));
            }

            CalculateQualityCurves(clip, time.fixedTime, time.variableEndStart, time.variableEndEnd, time.q, poseCurve, rotationCurve, heightCurve, positionCurve);
        }

        [FreeFunction]
        extern protected static void CalculateQualityCurves([NotNull] AnimationClip clip, float fixedTime, float variableEndStart, float variableEndEnd, int q, [Out] Vector2[] poseCurve, [Out] Vector2[] rotationCurve, [Out] Vector2[] heightCurve, [Out] Vector2[] positionCurve);
    }
}

View on GitHub (pinned to 225b0fbdb5)

Solutions

1. Allocate all four arrays to the same length before calling.
2. Derive the length from a single source (e.g., the sampling resolution) and reuse it for all allocations.
3. Add a precondition assert comparing the four lengths.

Example fix

// before
var pose = new Vector2[n];
var rot = new Vector2[n + 1]; // mismatch
// after
int n = samples;
var pose = new Vector2[n];
var rot = new Vector2[n];
var height = new Vector2[n];
var position = new Vector2[n];
MuscleClipUtility.CalculateQualityCurves(clip, time, pose, rot, height, position);

bool EqualLen(Vector2[] a, Vector2[] b, Vector2[] c, Vector2[] d) =>
    a.Length == b.Length && b.Length == c.Length && c.Length == d.Length;

When it happens

Trigger: Calling CalculateQualityCurves with arrays of differing lengths, e.g., poseCurve.Length != rotationCurve.Length.

Common situations: Caller allocates the four arrays from different sources or with different sampling counts. Reusing partially-filled buffers. Off-by-one when computing required length from QualityCurvesTime.

Related errors

• Cannot add dependency on invalid ArtifactKey.
• The object to add cannot be null.
• The object to remove cannot be null.
• Platform GUID {platformGuid} is not a valid Unity build plat
• rendererIDs and results NativeArrays don't match in length.

AI-assisted analysis of Unity-Technologies/UnityCsReference@225b0fbdb5 (2026-08-13). Data as JSON: /api/errors/16d2f40a7cdf5821. Report an issue: GitHub.