public override Brep GetBoundingBrep(double offset = 0.0)
{
/*
* int N = Math.Max(Data.Samples, 6);
*
* GenerateCrossSectionPlanes(N, out Plane[] frames, out double[] parameters, Data.InterpolationType);
*
* int numCorners = 4;
* GenerateCorners(offset);
*
* List<Point3d>[] crvPts = new List<Point3d>[numCorners];
* for (int i = 0; i < numCorners; ++i)
* {
* crvPts[i] = new List<Point3d>();
* }
*
* Transform xform;
* Point3d temp;
*
* for (int i = 0; i < parameters.Length; ++i)
* {
* //frames[i] = frames[i].FlipAroundYAxis();
* xform = Rhino.Geometry.Transform.PlaneToPlane(Plane.WorldXY, frames[i]);
*
* for (int j = 0; j < numCorners; ++j)
* {
* temp = new Point3d(m_section_corners[j]);
* temp.Transform(xform);
* crvPts[j].Add(temp);
* }
* }
*/
var edge_points = GetEdgePoints(offset);
int numCorners = m_section_corners.Length;
var num_points = edge_points[0].Count;
NurbsCurve[] edges = new NurbsCurve[numCorners + 4];
var edge_parameters = new List <double> [numCorners];
double t;
for (int i = 0; i < numCorners; ++i)
{
//edges[i] = NurbsCurve.CreateInterpolatedCurve(edge_points[i], 3, CurveKnotStyle.Chord, Centreline.TangentAtStart, Centreline.TangentAtEnd);
edges[i] = NurbsCurve.Create(false, 3, edge_points[i]);
edge_parameters[i] = new List <double>();
foreach (Point3d pt in edge_points[i])
{
edges[i].ClosestPoint(pt, out t);
edge_parameters[i].Add(t);
}
}
edges[numCorners + 0] = new Line(edge_points[3].First(), edge_points[0].First()).ToNurbsCurve();
edges[numCorners + 1] = new Line(edge_points[2].First(), edge_points[1].First()).ToNurbsCurve();
edges[numCorners + 2] = new Line(edge_points[2].Last(), edge_points[1].Last()).ToNurbsCurve();
edges[numCorners + 3] = new Line(edge_points[3].Last(), edge_points[0].Last()).ToNurbsCurve();
Brep[] sides = new Brep[numCorners + 2];
int ii = 0;
for (int i = 0; i < numCorners; ++i)
{
ii = (i + 1).Modulus(numCorners);
List <Point2d> rulings = new List <Point2d>();
for (int j = 0; j < num_points; ++j)
{
rulings.Add(new Point2d(edge_parameters[i][j], edge_parameters[ii][j]));
}
sides[i] = Brep.CreateDevelopableLoft(edges[i], edges[ii], rulings).First();
//sides[i] = Brep.CreateFromLoft(
// new Curve[] { edges[i], edges[ii] },
// Point3d.Unset, Point3d.Unset, LoftType.Normal, false)[0];
}
// Make ends
sides[numCorners + 0] = Brep.CreateFromLoft(
new Curve[] {
edges[numCorners + 0],
edges[numCorners + 1]
},
Point3d.Unset, Point3d.Unset, LoftType.Straight, false)[0];
sides[numCorners + 1] = Brep.CreateFromLoft(
new Curve[] {
edges[numCorners + 2],
edges[numCorners + 3]
},
Point3d.Unset, Point3d.Unset, LoftType.Straight, false)[0];
// Join Breps
Brep brep = Brep.JoinBreps(
sides,
Tolerance
)[0];
//brep.UserDictionary.Set("glulam", GetArchivableDictionary());
return(brep);
}
