public static Polygon ToPolygon(this rg.Curve curve)
{
if (curve.IsPolyline() && curve is rg.PolylineCurve pcrv)
{
return(pcrv.ToPolyline().ToPolygon());
}
return(curve.ToPolyline(0.01, 0.1, 0.1, 100).ToPolyline().ToPolygon());
// throw new ArgumentException("This curve is not a polygon, conversion will not continue");
}
/***************************************************/
public static BHG.ICurve FromRhino(this RHG.Curve rCurve)
{
if (rCurve == null)
{
return(null);
}
Type curveType = rCurve.GetType();
if (rCurve.IsLinear() && rCurve.SpanCount < 2)
{
return(new BHG.Line {
Start = rCurve.PointAtStart.FromRhino(), End = rCurve.PointAtEnd.FromRhino(), Infinite = false
});
}
if (rCurve.IsCircle())
{
RHG.Circle circle = new RHG.Circle();
rCurve.TryGetCircle(out circle);
return(circle.FromRhino());
}
else if (rCurve.IsArc() || typeof(RHG.ArcCurve).IsAssignableFrom(curveType))
{
RHG.Arc arc = new RHG.Arc();
rCurve.TryGetArc(out arc);
return(arc.FromRhino());
}
else if (rCurve.IsPolyline() || typeof(RHG.PolylineCurve).IsAssignableFrom(curveType))
{
RHG.Polyline polyline = new RHG.Polyline();
rCurve.TryGetPolyline(out polyline);
return(polyline.FromRhino());
}
else if (rCurve.IsClosed && rCurve.IsEllipse())
{
RHG.Ellipse ellipse = new RHG.Ellipse();
rCurve.TryGetEllipse(out ellipse);
return(ellipse.FromRhino());
}
else if (rCurve is RHG.NurbsCurve)
{
return(((RHG.NurbsCurve)rCurve).FromRhino());
}
else if (rCurve is RHG.PolyCurve)
{
return(((RHG.PolyCurve)rCurve).FromRhino()); //The test of IsPolyline above is very important to make sure we can cast to PolyCurve here
}
else
{
return((rCurve.ToNurbsCurve()).FromRhino());
}
}
public static Polyline ToPolyline(this rg.Curve curve)
{
if (curve.IsPolyline() && curve is rg.PolylineCurve pcrv)
{
return(pcrv.ToPolyline().ToPolyline());
}
if (curve.TryGetPolyline(out rg.Polyline polyline))
{
return(polyline.ToPolyline());
}
return(curve.ToPolyline(0.01, 0.1, 0.1, 100).ToPolyline().ToPolyline());
}
/// <summary>
/// Convert a Rhino curve to a Nucleus one
/// </summary>
/// <param name="curve"></param>
/// <returns></returns>
public static Curve Convert(RC.Curve curve)
{
if (curve == null)
{
return(null);
}
if (curve is RC.LineCurve)
{
return(Convert((RC.LineCurve)curve));
}
else if (curve.IsLinear())
{
return(Convert(new RC.Line(curve.PointAtStart, curve.PointAtEnd)));
}
else if (curve.IsPolyline())
{
RC.Polyline pLine;
if (curve.TryGetPolyline(out pLine))
{
return(Convert(pLine));
}
}
else if (curve is RC.PolyCurve)
{
return(Convert((RC.PolyCurve)curve));
}
else if (curve.IsArc())
{
RC.Arc arc;
if (curve.TryGetArc(out arc))
{
return(Convert(arc));
}
}
throw new NotImplementedException();
}
private Brep[] GetBorderWalls(Curve borderCrv, IEnumerable<Point3d> pts, IEnumerable<Vector3d> nrmls, double dist)
{
List<Point3d> ptsOut = new List<Point3d>();
List<Point3d> ptsIn = new List<Point3d>();
IEnumerator ptEnum = pts.GetEnumerator();
IEnumerator nrmlEnum = nrmls.GetEnumerator();
while ((ptEnum.MoveNext()) && (nrmlEnum.MoveNext()))
{
Point3d pt = (Point3d)ptEnum.Current;
Vector3d nrml = (Vector3d)nrmlEnum.Current;
Transform mvOut = Transform.Translation(nrml * dist);
Transform mvIn = Transform.Translation(nrml * -dist);
Point3d ptOut = new Point3d(pt);
Point3d ptIn = new Point3d(pt);
ptOut.Transform(mvOut);
ptIn.Transform(mvIn);
ptsOut.Add(ptOut);
ptsIn.Add(ptIn);
}
Curve crvOut;
Curve crvIn;
if (borderCrv.IsPolyline())
{
crvOut = new PolylineCurve(ptsOut);
crvIn = new PolylineCurve(ptsIn);
}
else
{
crvOut = Curve.CreateInterpolatedCurve(ptsOut, 3);
crvIn = Curve.CreateInterpolatedCurve(ptsIn, 3);
}
List<Curve> crvs = new List<Curve>();
crvs.Add(crvOut);
crvs.Add(crvIn);
Brep[] lofts = Brep.CreateFromLoft(crvs, Point3d.Unset, Point3d.Unset, LoftType.Normal, false);
Interval interval = new Interval(0, 1);
double u, v;
u = v = 0.05;
BrepFace loftFace = lofts[0].Faces[0];
loftFace.SetDomain(0, interval);
loftFace.SetDomain(1, interval);
while (u < 1 && v < 1)
{
if (loftFace.IsPointOnFace(u, v).Equals(PointFaceRelation.Interior))
{
break;
}
u += .05;
v += .05;
}
Point3d loftPt = loftFace.PointAt(u, v);
Vector3d loftNrml = loftFace.NormalAt(u, v);
Point3d loftPtOut = loftPt;
Point3d loftPtIn = loftPt;
loftPtOut.Transform(Transform.Translation(loftNrml));
loftNrml.Reverse();
loftPtIn.Transform(Transform.Translation(loftNrml));
Point3d envPtOut = environment.ClosestPoint(loftPtOut);
Point3d envPtIn = environment.ClosestPoint(loftPtIn);
if (loftPtOut.DistanceTo(envPtOut) < loftPtIn.DistanceTo(envPtIn))
{
foreach (Brep brep in lofts)
{
brep.Flip();
}
}
return lofts;
}