/// <summary>
/// Returns an array of 3d points (in clockwise order) that define the specified boundary type.
/// All points are returned in local tracking space shared by tracked nodes and accessible through OVRCameraRig's trackingSpace anchor.
/// </summary>
private Vector3[] GetGeometry(OculusApi.BoundaryType boundaryType)
{
int pointsCount = 0;
if (OculusApi.GetBoundaryGeometry(boundaryType, IntPtr.Zero, ref pointsCount))
{
//Assume if the number of points returned in the boundary is the same, it is the same boundary.
if (cachedPoints.Length == pointsCount)
{
return(cachedPoints);
}
if (pointsCount > 0)
{
int requiredNativeBufferCapacity = pointsCount * cachedVector3fSize;
if (cachedGeometryNativeBuffer.GetCapacity() < requiredNativeBufferCapacity)
{
cachedGeometryNativeBuffer.Reset(requiredNativeBufferCapacity);
}
int requiredManagedBufferCapacity = pointsCount * 3;
if (cachedGeometryManagedBuffer.Length < requiredManagedBufferCapacity)
{
cachedGeometryManagedBuffer = new float[requiredManagedBufferCapacity];
}
if (OculusApi.GetBoundaryGeometry(boundaryType, cachedGeometryNativeBuffer.GetPointer(), ref pointsCount))
{
Marshal.Copy(cachedGeometryNativeBuffer.GetPointer(), cachedGeometryManagedBuffer, 0, requiredManagedBufferCapacity);
cachedPoints = new Vector3[pointsCount];
for (int i = 0; i < pointsCount; i++)
{
cachedPoints[i] = new OculusApi.Vector3f
{
x = cachedGeometryManagedBuffer[3 * i + 0],
y = cachedGeometryManagedBuffer[3 * i + 1],
z = cachedGeometryManagedBuffer[3 * i + 2],
};
}
}
}
}
return(cachedPoints);
}
/// <summary>
/// Returns a vector that indicates the spatial dimensions of the specified boundary type. (x = width, y = height, z = depth)
/// </summary>
/// <remarks>
/// Reserved for Future use.
/// </remarks>
private Vector3 GetDimensions(OculusApi.BoundaryType boundaryType)
{
return(OculusApi.GetBoundaryDimensions(boundaryType).ToVector3FlippedZ());
}