Brtdku

I need some help with my college project. I have a cylinder and need it to act as a coil. For example, if I touched the cylinder's surface it's height will decrease (scaled in the y direction) as if pressing on a coil then when I remove my hand it returns back to its original size.

This is what I reached till now but I still have some problems that I can't solve.

public class Deformation : MonoBehaviour

{



    Vector3 tempPos;



    private void InteractionManager_SourceUpdated(InteractionSourceUpdatedEventArgs hand)

    {

        if (hand.state.source.kind == InteractionSourceKind.Hand)

        {

            Vector3 handPosition;

            hand.state.sourcePose.TryGetPosition(out handPosition);



            float negXRange = transform.position.x - transform.localScale.x;

            float posXRange = transform.position.x + transform.localScale.x;

            float negYRange = transform.position.y - (transform.localScale.y / 2);

            float posYRange = transform.position.y + (transform.localScale.y / 2);

            float negZRange = transform.position.z - transform.localScale.z;

            float posZRange = transform.position.z + transform.localScale.z;



            float handX = handPosition.x;

            float handY = handPosition.y;

            float handZ = handPosition.z;



            if ((negXRange <= handX) && (handX <= posXRange) && (negYRange <= handY) && (handY <= posYRange) && (negZRange <= handZ) && (handZ <= posZRange))

            {

                tempPos.y = handPosition.y;

                transform.localScale = tempPos;

            }

            else

            {

                tempPos.y = 0.3f;

                transform.localScale = tempPos;

            }

        }

    }



    // Use this for initialization

    void Start()

    {

        tempPos = transform.localScale;



        InteractionManager.InteractionSourceUpdated += InteractionManager_SourceUpdated;

    }   

1. I attached two scripts to my object (cylinder) the TapToPlace script from the HoloToolKit and the deformation script stated above. The problem is when I deploy to my HoloLens to test, when I place the cylinder first to the needed place then try to deform it after that, it is placed but not deformed. If I tried it the other way around both work. Any ideas why does the deformation script does not work after the TapToPlace one?


2. The cylinder when viewed by my HoloLens is somehow transparent. I mean that I can see my hand through it. I need it to be more solid.


3. I wonder if there is something like a delay that I can use because when I use the deformation script stated above the cylinder is scaled to my hand position then scaled back to its default size very fast and appears as if blinking.


4. 
   

   At first I place the cylinder on a setup (something as a table for example) then I begin to deform it. When I commented the else part in the deformation script stated above, it was scaled and left stable without returning to the original size. It is scaled symmetrically so its height is decreased from up and down resulting in the base of the cylinder becomes away from the table. I need the base of the cylinder to be always stable and touching the table under it.

   
   
   

   Note: I am using Unity 2017.3.1f1 (64-bit) - HoloToolkit-Unity-2017.2.1.3

   
   
   

   Thank you in advance.

   
   

1) Did you see the MRTK 2017.2.1.4 release? It has some useful features such as two handed resizing/scaling of objects. The BoundingBox code in the new MRTK release does moving and resizing in one component, it might be a better base to start from than the TapToPlace, or at least show how the two types of transform can work together.

2) What colour is your object? Hololens will render black as transparent, so try making the object bright white for testing. Also, just double check the brightness is turned up to full (the LHS buttons on the hololens). Finally, check your shader is the MRTK Standard shader. (again, the 2017.2.1.4 release has new shader code you might want to try.) . In a room without direct sunlight it should pretty much cover up your hand.

4) I'm not sure I follow completely, but the pivot point could be important here. If it is centred in the middle of the coil (as I'd imagine it is) then when you deform the coil down it will still stay centered at that central pivot point.
If you instead set the pivot point to the bottom of the coil, touching the table, you can scale and that point stays on the table and the top does all the moving.