private void SetCurveType(Rg.Curve curve)
{
Rg.Circle R = new Rg.Circle();
Rg.Arc A = new Rg.Arc();
Rg.Ellipse S = new Rg.Ellipse();
Rg.Polyline P = new Rg.Polyline();
if (curve.TryGetCircle(out R))
{
curveType = CurveTypes.Circle;
}
else if (curve.TryGetArc(out A))
{
curveType = CurveTypes.Arc;
}
else if (curve.TryGetEllipse(out S))
{
curveType = CurveTypes.Ellipse;
}
else if (curve.IsLinear())
{
curveType = CurveTypes.Line;
}
else if (curve.TryGetPolyline(out P))
{
curveType = CurveTypes.Polyline;
}
else
{
curveType = CurveTypes.Spline;
}
}
/***************************************************/
public static BHG.ICurve FromRhino(this RHG.Curve rCurve)
{
if (rCurve == null)
{
return(null);
}
Type curveType = rCurve.GetType();
if (rCurve.IsLinear() && rCurve.SpanCount < 2)
{
return(new BHG.Line {
Start = rCurve.PointAtStart.FromRhino(), End = rCurve.PointAtEnd.FromRhino(), Infinite = false
});
}
if (rCurve.IsCircle())
{
RHG.Circle circle = new RHG.Circle();
rCurve.TryGetCircle(out circle);
return(circle.FromRhino());
}
else if (rCurve.IsArc() || typeof(RHG.ArcCurve).IsAssignableFrom(curveType))
{
RHG.Arc arc = new RHG.Arc();
rCurve.TryGetArc(out arc);
return(arc.FromRhino());
}
else if (rCurve.IsPolyline() || typeof(RHG.PolylineCurve).IsAssignableFrom(curveType))
{
RHG.Polyline polyline = new RHG.Polyline();
rCurve.TryGetPolyline(out polyline);
return(polyline.FromRhino());
}
else if (rCurve.IsClosed && rCurve.IsEllipse())
{
RHG.Ellipse ellipse = new RHG.Ellipse();
rCurve.TryGetEllipse(out ellipse);
return(ellipse.FromRhino());
}
else if (rCurve is RHG.NurbsCurve)
{
return(((RHG.NurbsCurve)rCurve).FromRhino());
}
else if (rCurve is RHG.PolyCurve)
{
return(((RHG.PolyCurve)rCurve).FromRhino()); //The test of IsPolyline above is very important to make sure we can cast to PolyCurve here
}
else
{
return((rCurve.ToNurbsCurve()).FromRhino());
}
}
private void computeContourCurve()
{
if (targetPRhObjID == Guid.Empty)
{
return;
}
ObjRef targetpObjRef = new ObjRef(targetPRhObjID);
snapPointsList = new List <Point3d>();
Double tolerance = 0;
if (drawnType != DrawnType.In3D)
{
Brep targetBrep = (Brep)(targetpObjRef.Object().Geometry);
//TODO- topLeftP won't be on the face in the 3D case. so probably use orgin
float minD = 1000000f;
int minIndex = -1;
for (int i = 0; i < targetBrep.Faces.Count; i++)
{
//cast BrepFace to Brep for ClosestPoint(P) menthod
double dist = targetBrep.Faces[i].DuplicateFace(false).ClosestPoint(projectP).DistanceTo(projectP);
if (dist < minD)
{
minD = (float)dist;
minIndex = i;
}
}
Surface s = targetBrep.Faces[minIndex];
//surface might not be a perfect planar surface
while (tolerance < toleranceMax)
{
if (s.TryGetPlane(out curvePlane, tolerance))
{
break;
}
tolerance++;
}
if (tolerance >= toleranceMax)
{
double u, v;
if (s.ClosestPoint(projectP, out u, out v))
{
Rhino.Geometry.Vector3d normal = s.NormalAt(u, v);
//TODO fix the issue when normal is inward
curvePlane = new Plane(projectP, normal);
}
}
else
{
//testing finding the edge curve
Rhino.Geometry.Curve[] edgeCurves = (targetBrep.Faces[minIndex].DuplicateFace(false)).DuplicateEdgeCurves(true);
double tol = mScene.rhinoDoc.ModelAbsoluteTolerance * 2.1;
edgeCurves = Rhino.Geometry.Curve.JoinCurves(edgeCurves, tol);
// TODO: Check if null
contourCurve = edgeCurves[0];
//detect whether it's rect or circle then generate a snap pointList
Circle circle;
Rhino.Geometry.Polyline polyline;
if (contourCurve.TryGetCircle(out circle))
{
snapPointsList.Add(circle.Center);
snapPointsList.Add(circle.PointAt(0));
snapPointsList.Add(circle.PointAt(Math.PI / 2));
snapPointsList.Add(circle.PointAt(Math.PI));
snapPointsList.Add(circle.PointAt(Math.PI * 1.5));
}
else if (contourCurve.TryGetPolyline(out polyline))
{
Rectangle3d rect = Rectangle3d.CreateFromPolyline(polyline);
snapPointsList.Add(rect.Center);
snapPointsList.Add(rect.Corner(0));
snapPointsList.Add(rect.Corner(1));
snapPointsList.Add(rect.Corner(2));
snapPointsList.Add(rect.Corner(3));
}
else
{
double u = 0;
double v = 0;
s.ClosestPoint(s.GetBoundingBox(true).Center, out u, out v);
snapPointsList.Add(s.PointAt(u, v));
}
}
}
}
