/// <summary>
/// This is the method that actually does the work.
/// </summary>
/// <param name="DA">The DA object is used to retrieve from inputs and store in outputs.</param>
protected override void SolveInstance(IGH_DataAccess DA)
{
// 1. Declare placeholder variables
var struts = new List <Curve>();
double tol = 0.0;
// 2. Attempt to retrieve input
if (!DA.GetDataList(0, struts))
{
return;
}
if (!DA.GetData(1, ref tol))
{
return;
}
// 3. Validate input
if (struts == null || struts.Count == 1)
{
return;
}
if (tol < 0)
{
return;
}
// 4. Call cleaning method
var nodes = new Point3dList();
var nodePairs = new List <IndexPair>();
struts = FrameTools.CleanNetwork(struts, tol, out nodes, out nodePairs);
// 5. Organize index lists
var strutStart = new List <int>();
var strutEnd = new List <int>();
foreach (IndexPair nodePair in nodePairs)
{
strutStart.Add(nodePair.I);
strutEnd.Add(nodePair.J);
}
// 6. Set output
DA.SetDataList(0, struts);
DA.SetDataList(1, nodes);
DA.SetDataList(2, strutStart);
DA.SetDataList(3, strutEnd);
}
/// <summary>
/// Instace constructor based on a list of curves (i.e. a lattice).
/// </summary>
public ExoMesh(List <Curve> struts)
{
m_hulls = new List <ExoHull>();
m_sleeves = new List <ExoSleeve>();
m_plates = new List <ExoPlate>();
m_mesh = new Mesh();
double tol = RhinoDoc.ActiveDoc.ModelAbsoluteTolerance;
// First, we convert the struts to a list of unique nodes and node pairs
// We use the following lists to extract valid data from the input list
var nodeList = new Point3dList(); // List of unique nodes
var nodePairList = new List <IndexPair>(); // List of struts, as node index pairs
struts = FrameTools.CleanNetwork(struts, tol, out nodeList, out nodePairList);
// Set hull locations
foreach (Point3d node in nodeList)
{
m_hulls.Add(new ExoHull(node));
}
// Create sleeves, plates and relational indices
for (int i = 0; i < struts.Count; i++)
{
m_sleeves.Add(new ExoSleeve(struts[i], nodePairList[i]));
// Construct plates
m_plates.Add(new ExoPlate(nodePairList[i].I, struts[i].TangentAtStart));
m_plates.Add(new ExoPlate(nodePairList[i].J, -struts[i].TangentAtEnd));
// Set sleeve relational parameters
IndexPair platePair = new IndexPair(m_plates.Count - 2, m_plates.Count - 1);
m_sleeves[i].PlatePair = platePair;
// Set hull relational parameters
m_hulls[nodePairList[i].I].SleeveIndices.Add(i);
m_hulls[nodePairList[i].J].SleeveIndices.Add(i);
m_hulls[nodePairList[i].I].PlateIndices.Add(platePair.I);
m_hulls[nodePairList[i].J].PlateIndices.Add(platePair.J);
}
}