private Point3d CreateRandomPoint(Random rnd, GeometryBase geo, BoundingBox bbox)
{
var x = JellyUtility.Remap(rnd.NextDouble(), 0.0, 1.0, bbox.Min.X, bbox.Max.X);
var y = JellyUtility.Remap(rnd.NextDouble(), 0.0, 1.0, bbox.Min.Y, bbox.Max.Y);
var z = JellyUtility.Remap(rnd.NextDouble(), 0.0, 1.0, bbox.Min.Z, bbox.Max.Z);
var pos = new Point3d(x, y, z);
//return pos;
if (geo.ObjectType == Rhino.DocObjects.ObjectType.Brep)
{
var brep = (Brep)geo;
return(brep.ClosestPoint(pos));
}
else if (geo.ObjectType == Rhino.DocObjects.ObjectType.Curve)
{
var curve = (Curve)geo;
double t = 0;
curve.ClosestPoint(pos, out t);
return(curve.PointAt(t));
}
else if (geo.ObjectType == Rhino.DocObjects.ObjectType.Mesh)
{
var mesh = (Mesh)geo;
return(mesh.ClosestPoint(pos));
}
else if (geo.ObjectType == Rhino.DocObjects.ObjectType.Surface)
{
var srf = (Surface)geo;
double u, v;
srf.ClosestPoint(pos, out u, out v);
return(srf.PointAt(u, v));
}
else
{
return(Point3d.Origin);
}
}
/// <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)
{
IGH_GeometricGoo shape = null;
int num = -1;
int ite = -1;
List <Point3d> attractors = new List <Point3d>();
List <double> radiuses = new List <double>();
List <double> weights = new List <double>();
if (!DA.GetData <IGH_GeometricGoo>(0, ref shape))
{
return;
}
if (!DA.GetData(1, ref num))
{
return;
}
if (!DA.GetData(2, ref ite))
{
return;
}
DA.GetDataList(3, attractors);
DA.GetDataList(4, radiuses);
DA.GetDataList(5, weights);
GeometryBase geo = GH_Convert.ToGeometryBase(shape);
var points = new Point3dList();
var attracts = new Point3dList(attractors);
var rnd = new Random();
var bbox = geo.GetBoundingBox(true);
for (int i = 0; i < num; i++)
{
if (points.Count == 0)
{
var rndpt = CreateRandomPoint(rnd, geo, bbox);
points.Add(rndpt);
}
else
{
double fdist = -1;
Point3d fpos = new Point3d();
for (int t = 0; t < Math.Max(Math.Min(ite, i), 10); t++)
{
var nrndpt = CreateRandomPoint(rnd, geo, bbox);
double nattractdist = 1;
for (int n = 0; n < attracts.Count; n++)
{
var nattract = attracts[n];
var rad = radiuses[Math.Min(n, radiuses.Count - 1)];
var pow = weights[Math.Min(n, radiuses.Count - 1)];
var ntdist = Math.Pow(JellyUtility.Remap(Math.Min(nattract.DistanceTo(nrndpt), rad), 0, rad, 0, 1.0), pow);
nattractdist *= ntdist;
}
var nindex = points.ClosestIndex(nrndpt);
var npos = points[nindex];
var ndist = npos.DistanceTo(nrndpt) * nattractdist;
if (fdist < ndist)
{
fdist = ndist;
fpos = nrndpt;
}
}
points.Add(fpos);
}
}
DA.SetDataList(0, points);
}