private bool CheckMemberRestraint(Member MemberToCheck, Beam StartBeam, MEMBERCLASS MemberClass)
{
bool output = false;
// Gather all nodes connected to the beam to check or any beams parallel to it
var nodes = new HashSet <Node>(BeamHelpers.GatherParallelBeams(StartBeam).SelectMany(b => new List <Node>()
{
b.StartNode, b.EndNode
}));
// Check if any of the connected members are class above the current member
var connectedMembers = nodes.SelectMany(n => n.ConnectedMembers).Where(m => m != null && m != MemberToCheck);
if (MemberClass == MEMBERCLASS.PRIMARY)
{
output = connectedMembers.Any(m => this.PrimaryMembers.Contains(m));
}
else if (MemberClass == MEMBERCLASS.SECONDARY)
{
output = connectedMembers.Any(m => this.PrimaryMembers.Contains(m) || this.SecondaryMembers.Contains(m));
}
else if (MemberClass == MEMBERCLASS.TERTIARY)
{
output = connectedMembers.Any(m => this.PrimaryMembers.Contains(m) || this.SecondaryMembers.Contains(m) || this.TertiaryMembers.Contains(m));
}
return(output);
}
/// <summary>
/// Classify the beams in the model accordin to their specifications
/// </summary>
void ClassifyBeams()
{
const string status = "Classifying beams...";
int beamsProcessed;
int totalBeamToProcess;
HashSet <Beam> beamsToProcess;
beamsToProcess = new HashSet <Beam>(this.Beams);
beamsProcessed = 0;
totalBeamToProcess = beamsToProcess.Count;
// Any vertical beam attached directly to a support node is a column
Parallel.ForEach(beamsToProcess.Where(b => (b.StartNode.IsSupport || b.EndNode.IsSupport) && (this.ZAxisUp ? b.IsParallelToZ : b.IsParallelToY)), beam =>
{
foreach (var parallelBeam in BeamHelpers.GatherParallelBeams(beam))
{
parallelBeam.Type = BeamType.COLUMN;
this.OnModelBuildStatusUpdate(new ModelBuildStatusUpdateEventArgs(status, Interlocked.Increment(ref beamsProcessed), totalBeamToProcess));
}
});
beamsToProcess.RemoveWhere(b => b.Type == BeamType.COLUMN);
// Classify all remaining beams
// If a beam is vertical and not a column, then it is a post, otehrwise it is a beam
// All other beams are classified as braces
Parallel.ForEach(beamsToProcess, beam =>
{
if (beam.Spec == BeamSpec.Unspecified)
{
if ((this.ZAxisUp && beam.IsParallelToZ) || !this.ZAxisUp && beam.IsParallelToY)
{
beam.Type = BeamType.POST;
}
else
{
beam.Type = BeamType.BEAM;
}
}
else
{
beam.Type = BeamType.BRACE;
}
this.OnModelBuildStatusUpdate(new ModelBuildStatusUpdateEventArgs(status, Interlocked.Increment(ref beamsProcessed), totalBeamToProcess));
});
}
/// <summary>
/// Determine whether or not a brace is considered as restrained. A restrained brace is one that connects directly to a column or to a primary member.
/// </summary>
/// <param name="StartBrace">The brace from which to start the chain</param>
/// <param name="CheckedNodes">The chain of nodes that have already been checked (leave null to start)</param>
/// <param name="LastNode">The last checked node (leave null to start)</param>
/// <param name="MoveDownstream">The direction in which to proceed with the checks (true to move away from end to start node of the first beam, false to move in teh other direction)</param>
/// <returns>The chain of restrained braces</returns>
public bool CheckBraceRestraint(Beam StartBrace, HashSet <Node> CheckedNodes = null, Node LastNode = null, bool MoveDownstream = false)
{
if (CheckedNodes == null)
{
CheckedNodes = new HashSet <Node>();
}
// Determine which will be the next node depending on the beam orientation and direction of travel
var currentNode = BeamHelpers.DetermineNextNode(StartBrace, LastNode, MoveDownstream);
bool output = false;
if (!CheckedNodes.Contains(currentNode))
{
CheckedNodes.Add(currentNode);
if (currentNode.ConnectedBeams.Any(b => this.PrimaryBeams.Contains(b)) ||
currentNode.ConnectedMembers.SelectMany(m => m.Nodes).Any(n => n.ConnectedMembers.Any(m => m.Type == MemberType.COLUMN)))
{
output = true;
}
else
{
var nextBraces = currentNode.ConnectedBeams.Where(b => b != StartBrace && b.Spec == BeamSpec.MemberTruss);
if (nextBraces.Any())
{
foreach (var brace in nextBraces)
{
if (output = this.CheckBraceRestraint(brace, CheckedNodes, currentNode, MoveDownstream))
{
break;
}
}
}
else if (!MoveDownstream)
{
output = this.CheckBraceRestraint(StartBrace, CheckedNodes, currentNode, true);
}
}
}
return(output);
}