// Converts hex string with Uuid format "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX" to Byte array Uuid
public static byte[] StringToUuid(string str)
{
byte[] uuid = new byte[16];
str = str.Replace("-", "");
if (str.Length != 32)
{
AnchorSession.Log("StringToUuid failed because string was incorrect length: " + str.Length);
return(uuid);
}
for (int i = 0; i < 16; ++i)
{
uuid[i] = (byte)(GetHexVal(str[2 * i]) * 16 + GetHexVal(str[(2 * i) + 1]));
}
return(uuid);
}
// Converts Byte array to string with Uuid format "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"
public static string UuidToString(byte[] encodedMessage)
{
if (encodedMessage.Length != 16)
{
AnchorSession.Log("UuidToString failed because uuid byte array was incorrect length: " + encodedMessage.Length);
return("");
}
StringBuilder message = new StringBuilder("", 36);
var messageWithNoDashes = BitConverter.ToString(encodedMessage).ToLower().Replace('-'.ToString(), String.Empty);
for (int iter = 0; iter < 32; iter++)
{
if (iter == 8 || iter == 12 || iter == 16 || iter == 20)
{
message.Append("-");
}
message.Append(messageWithNoDashes[iter]);
}
return(message.ToString());
}
private static int GetHexVal(char hex)
{
int val = (int)hex;
if (val >= '0' && val <= '9')
{
return(val - 48);
}
else if (val >= 'a' && val <= 'f')
{
return(val - 87);
}
else if (val >= 'A' && val <= 'F')
{
return(val - 55);
}
else
{
AnchorSession.Log("GetHexVal failed because of invalid hex character: " + hex);
return(0);
}
}
/// <summary>
/// Spawns an anchor and parents it under the given transform
/// </summary>
/// <param name="transform"></param>
public void PlaceAnchorAtTransform(Transform transform)
{
AnchorSession.Log("Placing anchor at pose: " + transform.ToOVRPose().ToPosef().ToString());
var anchorHandle = AnchorSession.Instance.CreateSpatialAnchor(transform);
if (anchorHandle == AnchorSession.kInvalidHandle)
{
AnchorSession.Log("Failed to create spatial anchor");
return;
}
GameObject anchorObject = Instantiate(anchorPrefab_);
Anchor anchor = anchorObject.GetComponent <Anchor>();
if (anchor == null)
{
anchor = anchorObject.AddComponent <Anchor>();
}
anchor.SetAnchorHandle(anchorHandle);
AnchorSession.Instance.handleToAnchor.Add(anchorHandle, anchor);
}