public static NurbsSurface ToRhino(DB.NurbsSurfaceData surface, DB.BoundingBoxUV bboxUV)
{
var degreeU = surface.DegreeU;
var degreeV = surface.DegreeV;
var knotsU = surface.GetKnotsU();
var knotsV = surface.GetKnotsV();
int controlPointCountU = knotsU.Count - degreeU - 1;
int controlPointCountV = knotsV.Count - degreeV - 1;
var nurbsSurface = NurbsSurface.Create(3, surface.IsRational, degreeU + 1, degreeV + 1, controlPointCountU, controlPointCountV);
var controlPoints = surface.GetControlPoints();
var weights = surface.GetWeights();
var points = nurbsSurface.Points;
for (int u = 0; u < controlPointCountU; u++)
{
int u_offset = u * controlPointCountV;
for (int v = 0; v < controlPointCountV; v++)
{
var pt = controlPoints[u_offset + v];
if (surface.IsRational)
{
double w = weights[u_offset + v];
points.SetPoint(u, v, pt.X * w, pt.Y * w, pt.Z * w, w);
}
else
{
points.SetPoint(u, v, pt.X, pt.Y, pt.Z);
}
}
}
{
var knots = nurbsSurface.KnotsU;
int index = 0;
foreach (var w in knotsU.Skip(1).Take(knots.Count))
{
knots[index++] = w;
}
}
{
var knots = nurbsSurface.KnotsV;
int index = 0;
foreach (var w in knotsV.Skip(1).Take(knots.Count))
{
knots[index++] = w;
}
}
return(nurbsSurface);
}
public Surface NurbsSurfaceToSpeckle(DB.NurbsSurfaceData surface, DB.BoundingBoxUV uvBox, string units = null)
{
var result = new Surface();
var unit = units ?? ModelUnits;
result.units = unit;
result.degreeU = surface.DegreeU;
result.degreeV = surface.DegreeV;
result.domainU = new Interval(0, 1);
result.domainV = new Interval(0, 1);
var knotsU = surface.GetKnotsU().ToList();
var knotsV = surface.GetKnotsV().ToList();
result.knotsU = knotsU.GetRange(1, knotsU.Count - 2);
result.knotsV = knotsV.GetRange(1, knotsV.Count - 2);
var controlPointCountU = knotsU.Count - result.degreeU - 1;
var controlPointCountV = knotsV.Count - result.degreeV - 1;
var controlPoints = surface.GetControlPoints();
var weights = surface.GetWeights();
var points = new List <List <ControlPoint> >();
for (var u = 0; u < controlPointCountU; u++)
{
var uOffset = u * controlPointCountV;
var row = new List <ControlPoint>();
for (var v = 0; v < controlPointCountV; v++)
{
var pt = controlPoints[uOffset + v];
var extPt = ToExternalCoordinates(pt);
if (surface.IsRational)
{
var w = weights[uOffset + v];
var point = PointToSpeckle(extPt, unit);
row.Add(new ControlPoint(point.x, point.y, point.z, w, unit));
}
else
{
var point = PointToSpeckle(extPt, unit);
row.Add(new ControlPoint(point.x, point.y, point.z, unit));
}
}
points.Add(row);
}
result.SetControlPoints(points);
return(result);
}
public Surface NurbsSurfaceToSpeckle(DB.NurbsSurfaceData surface, DB.BoundingBoxUV uvBox)
{
var result = new Surface();
result.units = ModelUnits;
result.degreeU = surface.DegreeU;
result.degreeV = surface.DegreeV;
var knotsU = surface.GetKnotsU().ToList();
var knotsV = surface.GetKnotsV().ToList();
result.knotsU = knotsU.GetRange(1, knotsU.Count - 2);
result.knotsV = knotsV.GetRange(1, knotsV.Count - 2);
var controlPointCountU = knotsU.Count - result.degreeU - 1;
var controlPointCountV = knotsV.Count - result.degreeV - 1;
var controlPoints = surface.GetControlPoints();
var weights = surface.GetWeights();
var points = new List <List <ControlPoint> >();
for (var u = 0; u < controlPointCountU; u++)
{
var uOffset = u * controlPointCountV;
var row = new List <ControlPoint>();
for (var v = 0; v < controlPointCountV; v++)
{
var pt = controlPoints[uOffset + v];
var extPt = ToExternalCoordinates(pt);
if (surface.IsRational)
{
var w = weights[uOffset + v];
row.Add(new ControlPoint(ScaleToSpeckle(extPt.X), ScaleToSpeckle(extPt.Y), ScaleToSpeckle(extPt.Z), w, ModelUnits));
}
else
{
row.Add(new ControlPoint(ScaleToSpeckle(extPt.X), ScaleToSpeckle(extPt.Y), ScaleToSpeckle(extPt.Z), ModelUnits));
}
}
points.Add(row);
}
result.SetControlPoints(points);
return(result);
}
public static NurbsSurface ToRhino(this DB.NurbsSurfaceData surface, DB.BoundingBoxUV bboxUV)
{
var degreeU = surface.DegreeU;
var degreeV = surface.DegreeV;
var knotsU = surface.GetKnotsU();
var knotsV = surface.GetKnotsV();
int controlPointCountU = knotsU.Count - degreeU - 1;
int controlPointCountV = knotsV.Count - degreeV - 1;
var nurbsSurface = NurbsSurface.Create(3, surface.IsRational, degreeU + 1, degreeV + 1, controlPointCountU, controlPointCountV);
var controlPoints = surface.GetControlPoints();
var weights = surface.GetWeights();
var points = nurbsSurface.Points;
for (int u = 0; u < controlPointCountU; u++)
{
int u_offset = u * controlPointCountV;
for (int v = 0; v < controlPointCountV; v++)
{
var pt = controlPoints[u_offset + v];
if (surface.IsRational)
{
double w = weights[u_offset + v];
points.SetPoint(u, v, pt.X * w, pt.Y * w, pt.Z * w, w);
}
else
{
points.SetPoint(u, v, pt.X, pt.Y, pt.Z);
}
}
}
{
var knots = nurbsSurface.KnotsU;
int index = 0;
foreach (var w in knotsU.Skip(1).Take(knots.Count))
{
knots[index++] = w;
}
}
{
var knots = nurbsSurface.KnotsV;
int index = 0;
foreach (var w in knotsV.Skip(1).Take(knots.Count))
{
knots[index++] = w;
}
}
double ctol = Revit.ShortCurveTolerance * 5.0;
// Extend using smooth way avoids creating C2 discontinuities
nurbsSurface = nurbsSurface.Extend(IsoStatus.West, ctol, true) as NurbsSurface ?? nurbsSurface;
nurbsSurface = nurbsSurface.Extend(IsoStatus.East, ctol, true) as NurbsSurface ?? nurbsSurface;
nurbsSurface = nurbsSurface.Extend(IsoStatus.South, ctol, true) as NurbsSurface ?? nurbsSurface;
nurbsSurface = nurbsSurface.Extend(IsoStatus.North, ctol, true) as NurbsSurface ?? nurbsSurface;
return(nurbsSurface);
}
