public static Brep GetTrimmedBrep(pps.Surface surface, SurfaceConverter surfConv, CurveConverter curveConv)
{
var rhSurf = surfConv.FromPipe <Surface, pps.Surface>(surface);
var brep = Brep.CreateFromSurface(rhSurf);
if (!brep.IsValid)
{
brep.Repair(Rhino.RhinoMath.ZeroTolerance);
}
if (typeof(pps.NurbsSurface).IsAssignableFrom(surface.GetType()) &&
((pps.NurbsSurface)surface).TrimCurves.Count > 0)
{
List <ppc.Curve> trims = ((pps.NurbsSurface)surface).TrimCurves;
List <ppc.Curve> loops = brep.Faces.First().Loops.Select((l) =>
curveConv.ToPipe <Curve, ppc.Curve>(l.To3dCurve())).ToList();
if (!PipeDataUtil.EqualIgnoreOrder(loops, trims))
{
var rhTrims = trims.Select((c) => {
var cur = curveConv.FromPipe <Curve, ppc.Curve>(c);
var cur2d = rhSurf.Pullback(cur, Rhino.RhinoMath.ZeroTolerance);
return(rhSurf.Pushup(cur2d, Rhino.RhinoMath.ZeroTolerance));
}).ToList();
var faceToSplit = brep.Faces.First();
var brep2 = faceToSplit.Split(rhTrims, Rhino.RhinoMath.ZeroTolerance);
if (brep2 != null && !brep2.IsValid)
{
brep2.Repair(Rhino.RhinoMath.ZeroTolerance);
}
if (brep2 != null && brep2.IsValid)
{
brep = GetEnclosedFacesAsBrep(brep2, rhTrims) ?? brep2;
}
}
}
return(brep);
}
public BrepConverter(SurfaceConverter surfConv, CurveConverter curveConv, Point3dConverter ptConv) :
base(
(rb) => {
List <pps.Surface> faces = new List <pps.Surface>();
List <List <int> > adjacency = new List <List <int> >();
for (int i = 0; i < rb.Faces.Count; i++)
{
var surf = (pps.NurbsSurface)surfConv.ToPipe <rh.Surface, pps.Surface>(rb.Faces[i].ToNurbsSurface());
surf.OuterTrims.Clear();
surf.OuterTrims.AddRange(rb.Faces[i].Loops.Where((l) =>
l.LoopType == rh.BrepLoopType.Outer).Select((l) =>
curveConv.ToPipe <rh.Curve, ppc.Curve>(l.To3dCurve())));
surf.InnerTrims.Clear();
surf.InnerTrims.AddRange(rb.Faces[i].Loops.Where((l) =>
l.LoopType == rh.BrepLoopType.Inner).Select((l) =>
curveConv.ToPipe <rh.Curve, ppc.Curve>(l.To3dCurve())));
faces.Add(surf);
adjacency.Add(rb.Faces[i].AdjacentFaces().ToList());
}
var polySurf = new pps.PolySurface(faces, adjacency);
polySurf.IsSolid = rb.IsSolid;
return(polySurf);
},
(pb) => {
if (pb.Surfaces.Count <= 0)
{
return(null);
}
rh.Brep brep = null;
//trying to create a trimmed brep with built in methods
if (Util.TryCreateBrepWithBuiltInMethods(pb, out brep, surfConv, curveConv))
{
return(brep);
}
//attemping to build it from scratch - 15 attempts
int attempts = 0;
while (attempts < 15)
{
brep = new rh.Brep();
var ptCloud = new rh.PointCloud(pb.Vertices().Select((p) => ptConv.FromPipe <rh.Point3d, pp.Vec>(p)));
var ptList = ptCloud.GetPoints().ToList();
ptList.ForEach((p) => brep.Vertices.Add(p, Rhino.RhinoMath.ZeroTolerance));
var ppEdges = pb.Edges();
foreach (var ppCur in ppEdges)
{
var rhCurve = curveConv.FromPipe <rh.Curve, ppc.Curve>(ppCur);
int curveIndex = brep.Curves3D.Add(rhCurve);
int startIndex = ptCloud.ClosestPoint(rhCurve.PointAtStart);
int endIndex = ptCloud.ClosestPoint(rhCurve.PointAtEnd);
var edge = brep.Edges.Add(startIndex, endIndex, curveIndex, Rhino.RhinoMath.ZeroTolerance);
}
foreach (var ppSurf in pb.Surfaces)
{
var rhSurf = surfConv.FromPipe <rh.Surface, pps.Surface>(ppSurf);
var surfIndex = brep.AddSurface(rhSurf);
var face = brep.Faces.Add(surfIndex);
var loop = brep.Loops.Add(rh.BrepLoopType.Outer, face);
var surfEdges = ppSurf.Edges();
int loopCount = 0;
foreach (var ppLoop in surfEdges)
{
var rhCurve = curveConv.FromPipe <rh.Curve, ppc.Curve>(ppLoop);
var curve2d = rhSurf.Pullback(rhCurve, Rhino.RhinoMath.ZeroTolerance);
if (curve2d == null)
{
continue;
}
loopCount += 1;
int c2i = brep.Curves2D.Add(curve2d);
int c3i = ppEdges.IndexOf(ppLoop);
if (c3i == -1)
{
c3i = brep.Curves3D.Add(rhCurve);
}
int startIndex = ptCloud.ClosestPoint(rhCurve.PointAtStart);
int endIndex = ptCloud.ClosestPoint(rhCurve.PointAtEnd);
var trim = brep.Trims.Add(brep.Edges[c3i], false, loop, c2i);
trim.IsoStatus = rh.IsoStatus.None;
trim.TrimType = rh.BrepTrimType.Boundary;
trim.SetTolerances(0.0, 0.0);
}
if (loopCount == 0)
{
var curve2d = Util.Get2dEdgeLoop(rhSurf);
int c2i = brep.Curves2D.Add(curve2d);
var curve3d = rhSurf.Pushup(curve2d, Rhino.RhinoMath.ZeroTolerance);
int c3i = brep.Curves3D.Add(curve3d);
int startIndex = ptCloud.ClosestPoint(curve3d.PointAtStart);
int endIndex = ptCloud.ClosestPoint(curve3d.PointAtEnd);
var edge = brep.Edges.Add(startIndex, endIndex, c3i, Rhino.RhinoMath.ZeroTolerance);
var trim = brep.Trims.Add(brep.Edges[c3i], false, loop, c2i);
trim.IsoStatus = rh.IsoStatus.None;
trim.TrimType = rh.BrepTrimType.Boundary;
trim.SetTolerances(0.0, 0.0);
}
//var uSurfDom = rhSurf.Domain(0);
//var vSurfDom = rhSurf.Domain(1);
//var ufaceDom = face.Domain(0);
//var vfaceDom = face.Domain(1);
//var surfNorm = rhSurf.NormalAt(uSurfDom.Mid, vSurfDom.Mid);
//var faceNorm = face.NormalAt(ufaceDom.Mid, vfaceDom.Mid);
//face.OrientationIsReversed = rh.Vector3d.Multiply(surfNorm, faceNorm) < 0;
face.OrientationIsReversed = false;
}
//updating attempts and breaking if succeeded
attempts += 1;
if (brep.IsValid)
{
break;
}
}
string msg;
if (!brep.IsValidWithLog(out msg))
{
System.Diagnostics.Debug.WriteLine(msg);
brep.Repair(Rhino.RhinoMath.ZeroTolerance);
if (brep.IsValid)
{
return(brep);
}
//finally attemping to create an untrimmed brep
int attempt = 0;
while (!brep.IsValid && attempt < 15)
{
brep = rh.Brep.MergeBreps(pb.Surfaces.Select((s) =>
rh.Brep.CreateFromSurface(surfConv.FromPipe <rh.Surface, pps.Surface>(s))),
Rhino.RhinoMath.ZeroTolerance);
attempt += 1;
}
if (!brep.IsValid)
{
throw new InvalidOperationException("Failed to create a valid brep from " +
"received data because: \n" + msg);
}
}
return(brep);
}
)
{ }