Orion SDK Push Block

[richardhsu1027]

I've set up a scene with the hands successfully showing up. I've created a cube which I added a rigid body to but I can't seem to push it. Is there a setting to turn this on?

[Joe_Ward]

Have you added a pair of physics hands to the Hand Pool (under the LeapHandController)? The physics hands are the object that contains the rigid bodies for the hand and fingers. Use the prefabs in the Prefabs/HandModelsPhysical folder.

[richardhsu1027]

Hi Joe,

Thanks for the response. Yes, I have indeed added a pair of Rigid Round Hands from the HandModelsPhysical folder and it doesn't seem to be working. I also noticed that there is a small discrepancy between the docs and what I'm seeing inside Unity. The Hand Pool Script tab for my version brings up categories if I set the set the size of the array. Is this part of the new version of the SDK and if so, how do I set it so that it is correct?

Thanks,
Richard

[Joe_Ward]

You set the size of the Hand Pool to the number of different hand model types you are using. So for graphics hands and physics hands, you set the size to 2.

The "categories" are just taken from the GroupName variable. These names can be any string (they can be used to turn pairs of hands on and off from another script.)

If you can see the green gizmo outlines for the hands and fingers in the scene view when playing -- and you have hand in view, then everything should be working fine on the hand side of things. The physics hands should push any other game object that has a rigid body and which is not set so IsKinematic is true.

[richardhsu1027]

Hi Joe,

Thanks for the great explanations. I'm wondering if there are other settings for the cube as well since I have followed everything that you pointed out so far but still no luck. In terms of settings for the rigid body on the cube, anything important there? (I got mass: 10, drag: 0, angular drag: 0.05, use gravity: true, is kinematic: true, collision detection: continuous dynamic)

[Joe_Ward]

You want IsKinematic set to false. Otherwise rigidbodies don't react to imparted forces..

[richardhsu1027]

Made the change still no luck. Do you know where I can find a demo version of this in Unity that supports the new Orion SDK? I think using that sample as a guide may be helpful than doing this from scratch.

[richardhsu1027]

I have set up the physics hands, and the cube properly but can't seem to figure out why it is not working still.

[richardhsu1027]

I'm posting a screenshot of what I have so far:

[Joe_Ward]

That should just work. I duplicated your setup (as best as I could see) and didn't have to do anything special.

[richardhsu1027]

Hi, looking at your screenshot, I noticed that I'm not getting the green outlines that you're seeing. I'm wondering if that is a setting that I should turn on.

[Joe_Ward]

Those are the gizmos shown for rigid bodies in Unity. You can see them in the game view by clicking the gizmo button (you can see it above the right, top corner of the game view in the screenshot). A parent of the object containing the rigid bodies must also be selected in the scene hierarchy or Unity doesn't draw the gizmos.

[richardhsu1027]

I see. Did you also have a special setup for placing the cube and the camera with the Leap Motion controller? For some reason, I can only make the camera stare at the scene head on and not from the side. I'm wondering if that is causing an issue.

[Joe_Ward]

I just used the Unity default scene as a starting point and moved the camera position a bit to get a closer view.

In your scene, you have everything attached to the Camera object, so moving the Camera will move everything else, too. That shouldn't affect physics interactions, though.

[richardhsu1027]

Can you also confirm that you are using version 4.1.2 of the Orion assets? It's in beta so I don't know if that affected anything if everything else is the same.

[Joe_Ward]

I'm using the post-4.1.2 development branch. It will make no difference, this aspect hasn't changed since v1 of the assets. All we are doing is moving rigid bodies around based on the hand position. Unity is in charge of the rigid body-to-rigid body interaction.

[richardhsu1027]

I see. I think I'm still missing something. Do you mind sending that scene that worked for you as an asset file and I'll try to see if it's different from mine? My email address is rhsu0268@gmail.com.

[richardhsu1027]

This has been resolved. I want to note that so everyone knows.

[hm14]

Hi, I am facing the same issue. Could you please tell me how did you get it to work? :/

Thanks in advance.

[ankitagandhi]

I am facing the same issue, can you mail the scene to me as well at ankita.gandhi@mavs.uta.edu