/// <summary>
///
/// </summary>
/// <param name="smdc"></param>
/// <returns></returns>
public SurfaceMeshDataContract AddSurfaceMesh(SurfaceMeshDataContract smdc)
{
// assert that GUID was not already assigned
System.Diagnostics.Trace.Assert(smdc.Id.CompareTo(Guid.Empty) == 0);
smdc.Id = Guid.NewGuid();
_cacheMeshes.Add(smdc.Id, smdc);
smdc.VertexBuffer =
BufferRepository.CreateBuffer(Guid.NewGuid(), typeof(System.Windows.Media.Media3D.Vector3D),
smdc.VertexCount);
smdc.NormalBuffer =
BufferRepository.CreateBuffer(Guid.NewGuid(), typeof(System.Windows.Media.Media3D.Vector3D),
smdc.VertexCount);
if (smdc.TriangleCount > 0)
{
smdc.TriangleIndexBuffer =
BufferRepository.CreateBuffer(Guid.NewGuid(), typeof(TriangleIndex),
smdc.TriangleCount);
}
return smdc;
}
/// <summary>
/// synchronous call in to the meshing
/// </summary>
/// <param name="request">the request contract describing the meshing to be performed</param>
/// <returns></returns>
public MeshingResponse MeshStructure(MeshingRequest request)
{
// set up a resource accessor
LocalGeometryResourceManagerClient cmsc1 =
new LocalGeometryResourceManagerClient();
// and get the designated structure
StructureDataContract sdc = cmsc1.GetStructure(request.StructureGuid);
System.Diagnostics.Trace.WriteLine(string.Format("Meshing for structure {0} {1} {2}",
sdc.SeriesInstanceUID,
sdc.SOPInstanceUID,
sdc.Id.ToString(),
sdc.Contours.Count));
// System.Threading.Thread.Sleep(1000);
// get the contours for the strucutre
var contours = from guid in sdc.Contours
select cmsc1.GetPolygon(guid);
// TODO: check that contours match those in the request contract
// create the resulting surface mesh data contract
SurfaceMeshDataContract smdc = new SurfaceMeshDataContract();
// set up and calculate sizes
smdc.FrameOfReferenceUID = sdc.FrameOfReferenceUID;
smdc.RelatedStructureId = sdc.Id;
smdc.VertexCount = contours.Sum(c => c.VertexCount);
smdc.TriangleCount = smdc.VertexCount / 3;
// create the mesh object, to allocate the buffers
smdc = cmsc1.AddSurfaceMesh(smdc);
// get a handle to the vertices
var meshVertexHandle = smdc.VertexBuffer.GetHandle();
ulong currentMeshOffset = 0;
// now iterate over the the contours
foreach (var contour in contours)
{
Vector3D[] vertices = new Vector3D[contour.VertexBuffer.ElementCount];
// get access to the buffer
var contourHandle = contour.VertexBuffer.GetHandle();
// and copy from the contour...
contourHandle.ReadArray<Vector3D>(0, vertices, 0, vertices.Length);
// to the mesh vertex buffer
meshVertexHandle.WriteArray<Vector3D>(currentMeshOffset,
vertices, 0, vertices.Length);
// and release
contour.VertexBuffer.ReleaseHandle();
contour.VertexBuffer.CloseMapping();
// increment to the next position
currentMeshOffset += (ulong)(vertices.Length
* Marshal.SizeOf(typeof(Vector3D)));
}
// done with vertex buffer
smdc.VertexBuffer.ReleaseHandle();
smdc.VertexBuffer.CloseMapping();
cmsc1.Close();
// construct the response
MeshingResponse response = new MeshingResponse();
response.StructureGuid = sdc.Id;
response.SurfaceMeshGuid = smdc.Id;
return response;
}
