public static Surface ToRhinoSurface(NXOpen.Face face, out bool parametricOrientation)
{
FaceEx.FaceData faceData = face.GetData();
parametricOrientation = faceData.NormalReversed;
switch (faceData.FaceType)
{
case NXOpen.Face.FaceType.Planar:
return(ToRhinoPlaneSurface(face));
case NXOpen.Face.FaceType.Conical:
return(ToRhinoConicalSurface(face, faceData));
case NXOpen.Face.FaceType.Cylindrical:
return(ToRhinoCylindricalSurface(face, faceData));
case NXOpen.Face.FaceType.SurfaceOfRevolution:
return(ToRhinoRevSurface(face, faceData));
case NXOpen.Face.FaceType.Spherical:
case NXOpen.Face.FaceType.Blending:
return(ToRhinoSphereSurface(face));
default: return(FromBsurf(face));
}
}
static NurbsSurface ToRhinoCylindricalSurface(NXOpen.Face face, FaceEx.FaceData faceData)
{
NXOpen.Point3d top; // 圆柱顶点
double radius; // 圆柱半径
NXOpen.Point3d bottom; // 圆柱底面中心点
var faceBoundingBox = face.GetAlignedBoundingBox(faceData.Direction);
double totalHeight = faceBoundingBox.Height; // 圆柱总高度
if (face.GetEdges().Length == 2 && face.GetEdges().All(obj => obj.SolidEdgeType == NXOpen.Edge.EdgeType.Circular))
{
// 未修剪的圆柱
TheUfSession.Eval.Initialize2(face.GetEdges()[0].Tag, out var edgeEvaluator);
TheUfSession.Eval.AskArc(edgeEvaluator, out var arc1);
TheUfSession.Eval.Free(edgeEvaluator);
TheUfSession.Eval.Initialize2(face.GetEdges()[1].Tag, out edgeEvaluator);
TheUfSession.Eval.AskArc(edgeEvaluator, out var arc2);
TheUfSession.Eval.Free(edgeEvaluator);
if (arc2.center.ToPoint3d().Subtract(arc1.center.ToPoint3d()).GetUnitVector().EqualsTo(faceData.Direction.GetUnitVector()))
{
bottom = arc1.center.ToPoint3d();
}
else
{
bottom = arc2.center.ToPoint3d();
}
top = bottom.Move(faceBoundingBox.HeightDirection, totalHeight);
radius = arc1.radius;
}
else
{
var topExtremePt = WorkPart.MeasureManager.MeasureRectangularExtreme(face, faceBoundingBox.HeightDirection, faceBoundingBox.LengthDirection, faceBoundingBox.WidthDirection);
var distToFacePoint = topExtremePt.DistanceTo(faceData.Point, faceData.Direction);
top = faceData.Point.Move(faceBoundingBox.HeightDirection, distToFacePoint);
bottom = top.Move(faceBoundingBox.HeightDirection.Reverse(), totalHeight);
radius = faceData.Radius;
}
Circle baseCircle = new Circle(new Plane(bottom.ToRhino(), faceBoundingBox.HeightDirection.ToRhino()), radius);
var cyl = new Rhino.Geometry.Cylinder(baseCircle, totalHeight);
return(cyl.ToNurbsSurface());
}
static RevSurface ToRhinoConicalSurface(NXOpen.Face face, FaceEx.FaceData faceData)
{
double totalHeight; // 圆锥总高度
NXOpen.Point3d top; // 圆锥顶点
double radius; // 锥底半径
var faceBoundingBox = face.GetAlignedBoundingBox(faceData.Direction);
if (face.GetEdges().Length == 1 && face.GetEdges()[0].SolidEdgeType == NXOpen.Edge.EdgeType.Circular)
{
// 无修剪的锥形
TheUfSession.Eval.Initialize2(face.GetEdges()[0].Tag, out var edgeEvaluator);
TheUfSession.Eval.AskArc(edgeEvaluator, out var arc);
TheUfSession.Eval.Free(edgeEvaluator);
NXOpen.Point3d bottom = arc.center.ToPoint3d(); // 锥底中心点
totalHeight = faceBoundingBox.Height;
top = bottom.Move(faceBoundingBox.HeightDirection, totalHeight);
radius = arc.radius;
}
else
{
var tangentOfHalfAngle = Math.Tan(faceData.RadiusData);
top = faceData.Point.Move(faceBoundingBox.HeightDirection, faceData.Radius / tangentOfHalfAngle);
totalHeight = faceBoundingBox.Height + faceData.Radius / Math.Tan(faceData.RadiusData);
radius = faceData.Radius + faceBoundingBox.Height * tangentOfHalfAngle;
}
var cone = new Cone(new Plane(top.ToRhino(), faceBoundingBox.HeightDirection.Reverse().ToRhino()), totalHeight, radius);
return(cone.ToRevSurface());
// var curve = new LineCurve(outerPointOnCircle.ToRhino(), top.ToRhino());
// return RevSurface.Create(curve, new Line(bottom.ToRhino(), top.ToRhino()), 0.0, Math.PI * 2.0);
}
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));
}
