protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
GetObject go = new GetObject();
go.SetCommandPrompt("Select two curves for planar curve containment test");
go.GeometryFilter = ObjectType.Curve;
go.GeometryAttributeFilter = GeometryAttributeFilter.ClosedCurve;
go.SubObjectSelect = false;
go.GetMultiple(2, 2);
if (go.CommandResult() != Result.Success)
{
return(go.CommandResult());
}
Rhino.Geometry.Curve curveA = go.Object(0).Curve();
Rhino.Geometry.Curve curveB = go.Object(1).Curve();
if (null == curveA || null == curveB)
{
return(Result.Failure);
}
Plane planeA, planeB;
if (!curveA.IsPlanar() || !curveA.TryGetPlane(out planeA))
{
RhinoApp.WriteLine("Curve A is not planar.");
return(Result.Success);
}
if (!curveB.IsPlanar() || !curveB.TryGetPlane(out planeB))
{
RhinoApp.WriteLine("Curve B is not planar.");
return(Result.Success);
}
double tol = Rhino.RhinoMath.ZeroTolerance;
RegionContainment rc = Curve.PlanarClosedCurveRelationship(curveA, curveB, planeA, tol);
switch (rc)
{
case RegionContainment.Disjoint:
RhinoApp.WriteLine("There is no common area between the two regions.");
break;
case RegionContainment.MutualIntersection:
RhinoApp.WriteLine("The two curves intersect. No full containment relationship exists.");
break;
case RegionContainment.AInsideB:
RhinoApp.WriteLine("Region bounded by curveA (first curve) is inside of curveB (second curve).");
break;
case RegionContainment.BInsideA:
RhinoApp.WriteLine("Region bounded by curveB (second curve) is inside of curveA (first curve).");
break;
}
return(Result.Success);
}
/***************************************************/
public static RHG.Brep ToRhino(this BHG.PlanarSurface planarSurface)
{
if (planarSurface == null || planarSurface.ExternalBoundary == null)
{
return(null);
}
RHG.Curve externalCurve = planarSurface.ExternalBoundary.IToRhino();
if (externalCurve == null || !externalCurve.IsPlanar(BHG.Tolerance.Distance))
{
return(null);
}
List <RHG.Curve> rhCurves = new List <RHG.Curve>();
if (planarSurface.InternalBoundaries != null)
{
rhCurves.AddRange(planarSurface.InternalBoundaries.Select(c => c.IToRhino()).Where(c => c.IsPlanar(BHG.Tolerance.Distance)).ToList());
if (rhCurves.Count < planarSurface.InternalBoundaries.Count)
{
int skipped = planarSurface.InternalBoundaries.Count - rhCurves.Count;
Reflection.Compute.RecordWarning($"{skipped} internal boundaries skipped due to a failed planarity test.");
}
}
rhCurves.Add(externalCurve);
RHG.Brep[] rhSurfaces = RHG.Brep.CreatePlanarBreps(rhCurves);
if (rhSurfaces == null)
{
return(null);
}
if (rhSurfaces.Length > 1)
{
//If more than one surface is extracted, try boolean difference of the curves to generate the geometry
List <RHG.Curve> inner = new List <RHG.Curve>(rhCurves);
inner.RemoveAt(inner.Count - 1);
RHG.Curve[] difference = RHG.Curve.CreateBooleanDifference(externalCurve, inner);
//Internal and external edges fully overlap -> 0 edges -> empty Brep
if (difference == null || difference.Length == 0)
{
return(null);
}
RHG.Brep[] rhSurfacesFromDifference = RHG.Brep.CreatePlanarBreps(difference);
if (rhSurfacesFromDifference == null)
{
return(null);
}
if (rhSurfacesFromDifference.Length > 1)
{
Reflection.Compute.RecordWarning("Surface edges are not coplanar or their intersection is not empty." +
"The conversion to Rhino results into multiple Breps and only the first brep will be returned.");
}
else if (rhSurfacesFromDifference.Length == 1)
{
Reflection.Compute.RecordWarning("The internal edges overlap with the external." +
"Boolean intersection has been used to try to get out the correct geometry." +
"Topology might have changed for the surface obejct");
return(rhSurfacesFromDifference.FirstOrDefault());
}
}
return(rhSurfaces.FirstOrDefault());
}