public override void Evaluate(FSharpList <Value> args, Dictionary <PortData, Value> outPuts)
{
object arg0 = ((Value.Container)args[0]).Item;
Autodesk.Revit.DB.Face f = null;
if (arg0 is Reference)
{
Reference faceRef = arg0 as Reference;
f = dynRevitSettings.Doc.Document.GetElement(faceRef.ElementId).GetGeometryObjectFromReference(faceRef) as Autodesk.Revit.DB.Face;
}
double d = ((Value.Number)args[1]).Item; //dampening
double s = ((Value.Number)args[2]).Item; //spring constant
double r = ((Value.Number)args[3]).Item; //rest length
double m = ((Value.Number)args[4]).Item; //nodal mass
int numX = (int)((Value.Number)args[5]).Item; //number of particles in X
int numY = (int)((Value.Number)args[6]).Item; //number of particles in Y
double g = ((Value.Number)args[7]).Item; //gravity z component
ParticleSystem.setIsFaceConstrained(true);
ParticleSystem.setConstraintFace(f);
ParticleSystem.Clear();
setupParticleSystem(f, numX, numY, d, r, s, m);
ParticleSystem.setGravity(g);
outPuts[OutPortData[0]] = Value.NewContainer(ParticleSystem);
}
