Unity C# code to move and resize a cube using your hands

cuberesizer.cs

var leftDiff = (leftIndex.transform.position - leftThumb.transform.position).magnitude;
var rightDiff = (rightIndex.transform.position - rightThumb.transform.position).magnitude;

if (leftDiff < PINCH_DISTANCE && rightDiff < PINCH_DISTANCE)
{
    var leftX = leftIndex.transform.position.x;
    var leftY = leftIndex.transform.position.y;
    var leftZ = leftIndex.transform.position.z;
    var rightX = rightIndex.transform.position.x;
    var rightY = rightIndex.transform.position.y;
    var rightZ = rightIndex.transform.position.z;

    var x_mid = (leftX + rightX) / 2;
    var y_mid = (leftY + rightY) / 2;
    var z_mid = (leftZ + rightZ) / 2;

    var x_scale = Abs(leftX - rightX) * SCALE_PCT;
    var y_scale = Abs(leftY - rightY) * SCALE_PCT;
    var z_scale = Abs(leftZ - rightZ) * SCALE_PCT;

    this.transform.position = new Vector3(x_mid, y_mid, z_mid);
    this.transform.localScale = new Vector3(x_scale, y_scale, z_scale);
    this.transform.rotation = Quaternion.identity;
}