public static Brep ToRhinoBrep(NXOpen.Body body)
{
if (false)
{
Brep brep = new Brep();
for (int i = 0; i < body.GetFaces().Length; i++)
{
AddNXFace(body.GetFaces()[i], brep);
}
return(brep);
}
else
{
return(JoinAndMerge(body.GetFaces().Select(x => ToRhinoBrep(x)).ToArray(), Globals.DistanceTolerance));
}
}
static RevSurface ToRhinoRevSurface(NXOpen.Face face, FaceEx.FaceData faceData)
{
var bodyFeatures = face.GetBody().GetFeatures();
var revolveFeature = bodyFeatures.FirstOrDefault(obj => obj is NXOpen.Features.Revolve);
Curve faceSectionCurve = default;
double startRadian = 0.0;
double endRadian = Math.PI * 2;
if (revolveFeature != null)
{
NXOpen.Features.RevolveBuilder revolveBuilder = WorkPart.Features.CreateRevolveBuilder(revolveFeature);
revolveBuilder.Section.GetOutputCurves(out var sectionCurves);
startRadian = revolveBuilder.Limits.StartExtend.Value.Value * Math.PI / 180.0;
endRadian = revolveBuilder.Limits.EndExtend.Value.Value * Math.PI / 180.0;
revolveBuilder.Destroy();
for (int i = 0; i < sectionCurves.Length; i++)
{
var baseCurve = sectionCurves[i] as NXOpen.IBaseCurve;
var curveMidPt = baseCurve.GetPoint(0.5);
if (curveMidPt.DistanceTo(face.Tag).Distance < DistanceTolerance)
{
faceSectionCurve = baseCurve.ToRhinoCurve();
break;
}
}
}
else
{
var faceBoundingBox = face.GetAlignedBoundingBox(faceData.Direction);
var point1 = faceData.Point.Move(faceData.Direction, faceBoundingBox.Height * 1.5);
var faceMidPoint = face.GetPoint();
// 求与旋转方向垂直，并且位于面上的方向
var verticalDirection = faceData.Direction.CrossProduct(faceMidPoint.Subtract(faceData.Point)).CrossProduct(faceData.Direction);
var point2 = point1.Move(verticalDirection, faceBoundingBox.Length * 1.5);
var point3 = point2.Move(faceData.Direction.Reverse(), faceBoundingBox.Height * 3);
var point4 = point3.Move(verticalDirection.Reverse(), faceBoundingBox.Length * 1.5);
NXOpen.Session.UndoMarkId undoMarkId = TheSession.SetUndoMark(NXOpen.Session.MarkVisibility.Invisible, "Calc Rev Profile");
NXOpen.Body fourPointSurface = WorkPart.Features.CreateFourPointSurface(point1, point2, point3, point4);
try
{
NXOpen.Features.IntersectionCurve intersectionCurveFeature = WorkPart.Features.CreateIntersectionCurve(fourPointSurface.GetFaces(), face);
faceSectionCurve = (intersectionCurveFeature.GetEntities()[0] as NXOpen.Curve).ToRhino();
intersectionCurveFeature.Delete();
fourPointSurface.Delete();
}
catch (Exception)
{
TheSession.UndoToMark(undoMarkId, "Calc Rev Profile");
Console.WriteLine($"无法创建面 {face.Tag} 的交线");
return(null);
}
finally
{
TheSession.DeleteUndoMark(undoMarkId, "Calc Rev Profile");
}
}
return(RevSurface.Create(faceSectionCurve, new Line(faceData.Point.ToRhino(), faceData.Point.Move(faceData.Direction, 10.0).ToRhino()), startRadian, endRadian));
}