/***************************************************/
public static BHG.ISurface FromRhino(this RHG.NurbsSurface surface)
{
if (surface == null)
{
return(null);
}
if (surface.IsPlanar(BH.oM.Geometry.Tolerance.Distance))
{
BHG.ICurve externalEdge = RHG.Curve.JoinCurves(surface.ToBrep().DuplicateNakedEdgeCurves(true, false)).FirstOrDefault().FromRhino();
return(new BHG.PlanarSurface(externalEdge, new List <BHG.ICurve>()));
}
BHG.NurbsSurface bhs = new BHG.NurbsSurface
(
surface.Points.Select(x => x.Location.FromRhino()).ToList(),
surface.Points.Select(x => x.Weight).ToList(),
surface.KnotsU.ToList(),
surface.KnotsV.ToList(),
surface.Degree(0),
surface.Degree(1),
new List <BHG.SurfaceTrim>(),
new List <BHG.SurfaceTrim>()
);
return(bhs);
}
/***************************************************/
public static void RenderMeshes(BHG.NurbsSurface surface, Rhino.Display.DisplayPipeline pipeline, DisplayMaterial material)
{
RHG.GeometryBase geometry = surface.ToRhino();
if (geometry is RHG.Surface)
{
geometry = RHG.Brep.CreateFromSurface((RHG.Surface)geometry);
}
pipeline.DrawBrepShaded((RHG.Brep)geometry, material);
}
/***************************************************/
public static void RenderWires(BHG.NurbsSurface surface, Rhino.Display.DisplayPipeline pipeline, Color bhColour)
{
RHG.GeometryBase geometry = surface.ToRhino();
if (geometry is RHG.Surface)
{
geometry = RHG.Brep.CreateFromSurface((RHG.Surface)geometry);
}
pipeline.DrawBrepWires((RHG.Brep)geometry, bhColour, 2);
}
/***************************************************/
public static RHG.GeometryBase ToRhino(this BHG.NurbsSurface surface)
{
if (surface == null)
{
return(null);
}
List <int> uvCount = surface.UVCount();
RHG.NurbsSurface rhSurface = RHG.NurbsSurface.Create(3, true, surface.UDegree + 1, surface.VDegree + 1, uvCount[0], uvCount[1]);
for (int i = 0; i < rhSurface.KnotsU.Count; i++)
{
rhSurface.KnotsU[i] = surface.UKnots[i];
}
for (int i = 0; i < rhSurface.KnotsV.Count; i++)
{
rhSurface.KnotsV[i] = surface.VKnots[i];
}
for (int i = 0; i < uvCount[0]; i++)
{
for (int j = 0; j < uvCount[1]; j++)
{
rhSurface.Points.SetControlPoint(i, j, new RHG.ControlPoint(surface.ControlPoints[j + (uvCount[1] * i)].ToRhino(), surface.Weights[j + (uvCount[1] * i)]));
}
}
if (!rhSurface.IsValid)
{
return(null);
}
if (surface.OuterTrims.Count == 0 && surface.InnerTrims.Count == 0)
{
return(rhSurface);
}
else
{
RHG.Brep brep = new RHG.Brep();
int srf = brep.AddSurface(rhSurface);
RHG.BrepFace face = brep.Faces.Add(srf);
foreach (BHG.SurfaceTrim trim in surface.OuterTrims)
{
brep.AddBrepTrim(face, trim, RHG.BrepLoopType.Outer);
}
foreach (BHG.SurfaceTrim trim in surface.InnerTrims)
{
brep.AddBrepTrim(face, trim, RHG.BrepLoopType.Inner);
}
return(brep.IsValid ? brep : null);
}
}
