/// <summary>
/// Looks for a matching child and position it accordingly.
/// </summary>
private void PositionModel(KeyboardModel model)
{
var keyboardModel = transform.Find(model.ToString("G"));
Pose keyboardLocalPose;
if (KeyboardModelPose.TryGetValue(model, out keyboardLocalPose))
{
keyboardModel.localPosition = keyboardLocalPose.position;
keyboardModel.localRotation = keyboardLocalPose.rotation;
}
}
/// <summary>
/// Gets the openvr device id of the first tracked device whose product id
/// corresponds to the required keyboard model. Returns true if such a
/// device could be found.
/// </summary>
/// <param name="model">The keyboard model to look for.</param>
/// <param name="deviceId">The id of the first device found if the function
/// returned true, -1 otherwise.</param>
/// <returns>True if a device could be found, false otherwise.</returns>
private bool GetFirstKeyboard(KeyboardModel model, out int deviceId)
{
// KeyboardModel as a 4-digit hex
string pid = "0x" + model.ToString("X").Substring(4);
var system = OpenVR.System;
if (system != null)
{
for (uint i = 0; i < OpenVR.k_unMaxTrackedDeviceCount; i++)
{
// check if a model number exists for device i
var error = ETrackedPropertyError.TrackedProp_Success;
var capacity = system.GetStringTrackedDeviceProperty(i, ETrackedDeviceProperty.Prop_ModelNumber_String, null, 0, ref error);
if (capacity <= 1)
{
continue;
}
// get that model number
var modelNumber = new System.Text.StringBuilder((int)capacity);
system.GetStringTrackedDeviceProperty(i, ETrackedDeviceProperty.Prop_ModelNumber_String, modelNumber, capacity, ref error);
// compare against required one
// note: a proper regex could be used here to avoid corner cases
if (modelNumber.ToString().Contains(logitechVid) &&
modelNumber.ToString().Contains(pid))
{
deviceId = (int)i;
return(true);
}
}
}
else
{
Debug.LogError("SteamVR likely not initialized, cannot look for a tracked keyboard.");
}
deviceId = -1;
return(false);
}