HandPoseDetector IndexOutOfRangeException

[cubesky]

HandPoseDetector IndexOutOfRangeException

[MattGrayUL]

Hi @cubesky sorry for a late reply!

I am not sure it's possible to get to that line of code if the boneNum is 0

boneNum relates to the joints index where 0 is the metacarpal. The check just above in this loop will continue to the next index if the BoneType is Metacarpal:

                //Ignore the metacarpal as it will never really change.
                if (serializedHandBone.Type == Bone.BoneType.TYPE_METACARPAL)
                {
                    lastBoneRotation = activeHandBone.Rotation;
                    lastSerializedBoneRotation = serializedHandBone.Rotation;
                    continue;
                }

Are you actually getting this IndexOutOfRangeException? if so, I am happy to add an explicit check for boneNum == 0

[cubesky]

Yes, I got this Exception.

I'm using Pose Detector, but I can not find any example for Pose Detector on this version. So I use the following code on Pose Detector.

using Leap.Unity;
using UnityEngine;

[CreateAssetMenu(fileName = "GrabPose", menuName = "ScriptableObjects/GrabPoseScriptableObject", order = 1)]
public class GrabPose : HandPoseScriptableObject
{
    public GrabPose() { 
        for (int i = 0; i < 5; i++)
        {
            this.fingerJointRotationThresholds[i].jointThresholds = new [] { 
                new Vector2(0,0),new Vector2(0,0),new Vector2(0,0),new Vector2(0,0),new Vector2(0,0)
            };
        }
        SetAllBoneThresholds(0.8f, true);
        Debug.Log(this.fingerJointRotationThresholds.Length);
    }
}

[MattGrayUL]

Ah, the Poses are not intended to be made via code - but it's good that you've drawn our attention to it!

If you are hoping to detect grabs, I recommend using the code paths for this, as "grab" can often mean different things for different people, so isn't best represented as a pose (a complete shape)

If you do, however want to use Poses:

We actually have a collection of Poses that ship with the plugin, discussed in this docs page

You can also produce your own Poses by using the Pose Recorder Example Scene discussed here

[cubesky]

Oh, Hand Pose doesn't show up in Unity, and the document not mention it.

I find it in the sdk forwarding your image! Thanks

[MattGrayUL]

Ah, I see! That is because it's in the Packages folder, not Assets or Scene, which Unity hides by default 🤦 (see the hidden files in this screenshot!)

[cubesky]

Oh! Thanks! Now I can see them in select dialog. May be a document update for this?

[MattGrayUL]

I will raise a ticket for it :)

Thanks for raising this issue, I will now close it