/// <summary>
/// Update the surface
/// </summary>
/// <param name="handler">The handler to receive the surface information</param>
/// <param name="change">The surface change</param>
/// <param name="surface">The surface to update</param>
/// <param name="trianglesPerCubicMeter">The max triangles per cubic meter</param>
/// <param name="surfaceInfo">The surface info</param>
/// <param name="surfaceOptions">The mesh options</param>
private async void UpdateSurface(OnSurfaceChangedHandler handler, SurfaceChange change, SpatialMappingSurfaceInternal surface, float trianglesPerCubicMeter, SpatialSurfaceInfo surfaceInfo, SpatialSurfaceMeshOptions surfaceOptions)
{
if (surface.IsProcessing)
{
return;
}
try
{
surface.IsProcessing = true;
// Generate the mesh from the MixedReality surface info
SpatialSurfaceMesh surfaceMesh = await surfaceInfo.TryComputeLatestMeshAsync(trianglesPerCubicMeter, surfaceOptions);
if (surfaceMesh != null && surface.UpdateTime < surfaceMesh.SurfaceInfo.UpdateTime)
{
// Update the surface mesh
surface.UpdateSurfaceMesh(surfaceMesh);
if (handler != null)
{
handler(surface.Id, surface, change, surface.UpdateTime);
}
}
}
finally
{
surface.IsProcessing = false;
}
}
/// <summary>
/// Process all spatial surfaces
/// </summary>
/// <param name="handler">The handler to receive the surface information</param>
/// <param name="ignorePrevious">Ignore previous surfaces</param>
public void UpdateSurfaces(OnSurfaceChangedHandler handler, bool ignorePrevious)
{
////if (!this.pendingChanges && !ignorePrevious)
////{
//// return;
////}
this.pendingChanges = false;
lock (this)
{
if (this.updateSurfacesTask != null)
{
return;
}
this.updateSurfacesTask = System.Threading.Tasks.Task.Run(() =>
{
try
{
this.surfaceMeshOptions.IncludeVertexNormals = this.ObtainNormals;
var surfaceCollection = this.surfaceObserver.GetObservedSurfaces();
foreach (var pair in surfaceCollection)
{
// Gets the MixedReality surface
var id = pair.Key;
var surfaceInfo = pair.Value;
SpatialMappingSurface surface;
SurfaceChange change = SurfaceChange.Updated;
if (!this.surfaces.TryGetValue(id, out surface))
{
surface = new SpatialMappingSurfaceInternal()
{
Id = id
};
this.surfaces.Add(id, surface);
change = SurfaceChange.Added;
}
if (surface.UpdateTime < surfaceInfo.UpdateTime)
{
this.UpdateSurface(handler, change, surface as SpatialMappingSurfaceInternal, this.TrianglesPerCubicMeter, surfaceInfo, this.surfaceMeshOptions);
}
else if (ignorePrevious)
{
if (handler != null)
{
handler(id, surface, SurfaceChange.Removed, surface.UpdateTime);
}
}
}
var surafacesToRemove = this.surfaces.Where(id => !surfaceCollection.ContainsKey(id.Key)).ToList();
foreach (var pair in surafacesToRemove)
{
var id = pair.Key;
var surface = pair.Value;
this.surfaces.Remove(id);
surface.Dispose();
if (handler != null)
{
handler(id, surface, SurfaceChange.Removed, surface.UpdateTime);
}
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
this.updateSurfacesTask = null;
});
}
}