No method found for IsPointInside

Scripting
,
1

Hi all,

I’m struggling with some code in python. I need to identify the layer of the object containing a point in space, based on multiple sources I found, I coded the following script (sorry I couldn’t attach a file).

 import rhinoscriptsyntax as rs
 import scriptcontext as sc
 import Rhino

 Breps = [sc.doc.Objects.Find(guid) for guid in rs.AllObjects() if rs.IsBrep(guid)]
 epsilon = sc.doc.ModelAbsoluteTolerance
 point3D = rs.CreatePoint(-45,45,45)
 for brep in Breps :
     solid=Rhino.Geometry.Brep()
     solid.Append(rs.coercebrep(brep))
     if solid.IsPointInside(point3D,epsilon,1):
         print(rs.ObjectLayer(brep))
         break

I’m running it inside rhino using the script editor, but then the following error shows up:

no method matches given arguments for Brep.IsPointInside: (<class ‘Rhino.Geometry.Point3d’>,<class ‘float’>,<class ‘int’>)

However, when I run it from the command ‘runpythonscript’ it works, so I don’t know what is going on or how to solve it. I guess it has something to do with the mess IronPython vs CPython (which to be honest I don’t get completely).

just to be clear, I’m trying to run it inside Rhino because there I can import NumPy, whereas outside it doesn’t import it (again due to the CPython thingy)…

anyway, I’d do appreciate if someone knows what is going on, or if I can somehow make the outside reader (a.k.a runpythonscript) to recognize NumPy.

thx

2

Hi @Ferney,

Maybe something like this?

#! python 3
import Rhino
import scriptcontext as sc

def TestFerney(point):
    object_type = Rhino.DocObjects.ObjectType.Brep
    objects = sc.doc.Objects.FindByObjectType(object_type)
    if not objects or 0 == len(objects):
        return

    tolerance = sc.doc.ModelAbsoluteTolerance
    strictly_in = True

    for obj in objects:
        brep = obj.Geometry
        if isinstance(brep, Rhino.Geometry.Brep):
            if not brep.IsSolid:
                continue
            if not brep.IsPointInside(point, tolerance, strictly_in):
                continue
            obj.Select(True)
            layer = sc.doc.Layers.FindIndex(obj.Attributes.LayerIndex)
            if layer:
                print(layer.Name)
    sc.doc.Views.Redraw()

if __name__ == "__main__":
    point = Rhino.Geometry.Point3d(5,5,5)
    TestFerney(point)

– Dale

3

Hi Dale, thank you thank you very much… it works perfectly!!

now for the sake of learning, I just wonder where lies the difference… the only ‘big’ change I see is the definition of the object to query for IsPointInside, while I define it as:

solid=Rhino.Geometry.Brep()
solid.Append(rs.coercebrep(brep))

whereas you define it as:

brep = obj.Geometry

I mean, AFAIU, I define the variable to take the ‘Brep’ geometry of the object only, while you send the ‘whole’ geometry

once again thank you very much

4

Hi Ferney,

You probably figured this out already, but the error message is because IsPointInside() is expecting a Boolean value as the third argument as a bool True instead of an int 1.