private Point3d GetNextFlowStepOnMesh(Mesh FLOW_MESH, Point3d startPoint, double MOVE_DISTANCE)
{
double maximumDistance = 0; // TD: setting this as +ve speeds up the search?
Vector3d closestNormal;
Point3d closestPoint;
// Get closest point
FLOW_MESH.ClosestPoint(startPoint, out closestPoint, out closestNormal, maximumDistance);
// Get the next point following the vector
var nextFlowPoint = FlowCalculations.MoveFlowPoint(closestNormal, closestPoint, MOVE_DISTANCE);
// Need to snap back to the surface (the vector may be pointing off the edge)
return(FLOW_MESH.ClosestPoint(nextFlowPoint));
}
private Point3d GetNextFlowStepOnSurface(Brep FLOW_SURFACE, Point3d startPoint, double MOVE_DISTANCE)
{
double closestS, closestT;
double maximumDistance = 0; // TD: setting this as +ve speeds up the search?
Vector3d closestNormal;
ComponentIndex closestCI;
Point3d closestPoint;
// Get closest point
FLOW_SURFACE.ClosestPoint(startPoint, out closestPoint, out closestCI, out closestS, out closestT,
maximumDistance, out closestNormal);
// Get the next point following the vector
var nextFlowPoint = FlowCalculations.MoveFlowPoint(closestNormal, closestPoint, MOVE_DISTANCE);
// Need to snap back to the surface (the vector may be pointing off the edge)
return(FLOW_SURFACE.ClosestPoint(nextFlowPoint));
}
protected override void GroundHogSolveInstance(IGH_DataAccess DA)
{
// Create holder variables for input parameters
var FLOW_SURFACE = default(Surface);
var FLOW_ORIGINS = new List <Point3d>();
var FLOW_FIDELITY = 1000.0; // Default Value
var FLOW_LIMIT = 0; // Default Value
var THREAD = false;
// Access and extract data from the input parameters individually
DA.GetData(0, ref FLOW_SURFACE);
if (!DA.GetDataList(1, FLOW_ORIGINS))
{
return;
}
if (!DA.GetData(2, ref FLOW_FIDELITY))
{
return;
}
if (!DA.GetData(3, ref FLOW_LIMIT))
{
return;
}
if (!DA.GetData(4, ref THREAD))
{
return;
}
// Validation
if (FLOW_SURFACE == null)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "A null item has been provided as the Surface input; please correct this input.");
return;
}
// TODO: properly cull nulls; they come through as 0,0,0 however
if (FLOW_ORIGINS.Count == 0)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "No valid points have been provided; perhaps check that you have not provided null or invalid points?");
return;
}
if (FLOW_FIDELITY == 0)
{
FLOW_FIDELITY = FlowCalculations.getSensibleFidelity(FLOW_ORIGINS, null, FLOW_SURFACE);
}
var startPoints = FLOW_ORIGINS.ToArray(); // Array for multithreading
var allFlowPathPoints = new List <Point3d> [startPoints.Length]; // Array of all the paths
var flowPoints = new List <Point3d>();
var FLOW_BREP = default(Brep);
if (FLOW_SURFACE != default(Surface))
{
FLOW_BREP = FLOW_SURFACE.ToBrep();
}
if (THREAD)
{
Parallel.For(0, startPoints.Length, i => // Shitty multithreading
{
allFlowPathPoints[i] = DispatchFlowPoints(FLOW_BREP, startPoints[i], FLOW_FIDELITY, FLOW_LIMIT);
}
);
}
else
{
for (var i = 0; i < startPoints.Length; i = i + 1)
{
allFlowPathPoints[i] = DispatchFlowPoints(FLOW_BREP, startPoints[i], FLOW_FIDELITY, FLOW_LIMIT);
}
}
var outputs = FlowCalculations.MakeOutputs(allFlowPathPoints);
// Assign variables to output parameters
DA.SetDataTree(0, outputs.Item1);
DA.SetDataList(1, outputs.Item2);
}
