Rhinoscript_onmesh?

Scripting
,
1

I want to use python to convert brep or subd to mesh, I haven’t found a suitable api so far, I think I prefer to use RhinoScriptSyntax api but there is no such method as “onmesh()” in this api, there seems to be such method in rhinocommon, But rhinocommon is obscure and I’m not very good at using it. Can anyone provide a start or a hint? Thanks

2

Hi @tom33,

Have a look at this:

https://developer.rhino3d.com/api/rhinocommon/rhino.docobjects.rhinoobject/meshobjects

– Dale

1 Like
3

Sir, I’m not sure what I should do next

import Rhino as rh
from Rhino.Input.Custom import *
from Rhino.DocObjects import ObjectType
from Rhino.Geometry import *
from Rhino.Commands import Result

def RunCommand():
  gm = rh.Input.Custom.GetObject()
  gm.SetCommandPrompt("Select")
  gm.GeometryFilter = ObjectType.AnyObject
  gm.GeometryAttributeFilter = GeometryAttributeFilter.ClosedMesh
  gm.SubObjectSelect = False
  gm.GroupSelect = True
  gm.GetMultiple(1, 0)
  if gm.CommandResult() != Result.Success:
    return gm.CommandResult()
go = RunCommand()
rt = rh.DocObjects.RhinoObject.MeshObjects(go)
4

Hi @tom33,

Try this:

#! python 3
import Rhino
import scriptcontext as sc
import System

def __MeshableTypes():
    types = Rhino.DocObjects.ObjectType.Surface
    types = types | Rhino.DocObjects.ObjectType.PolysrfFilter
    types = types | Rhino.DocObjects.ObjectType.Extrusion
    types = types | Rhino.DocObjects.ObjectType.SubD
    return types

def TestTom():
    rc, objrefs = Rhino.Input.RhinoGet.GetMultipleObjects("Select objects to mesh", False, __MeshableTypes())
    if rc != Rhino.Commands.Result.Success:
        return
    
    in_objects = []
    for objref in objrefs:
        in_objects.append(objref.Object())
    
    mp = Rhino.Geometry.MeshingParameters.DocumentCurrentSetting(sc.doc)
    rc, meshes, attributes = Rhino.DocObjects.RhinoObject.MeshObjects(in_objects, mp)
    if rc == Rhino.Commands.Result.Success:
        for i in range(0, len(meshes)):
            id = sc.doc.Objects.AddMesh(meshes[i], attributes[i])
            if id != System.Guid.Empty:
                sc.doc.Objects.Select(id, True, True, True)

    sc.doc.Views.Redraw()

if __name__ == "__main__":
    TestTom()

– Dale

1 Like
5

This is useful Sir. Thank you very much. One problem is that the scriptcontext module does not seem to be explained in the api on the official website

6

Here is the source code:

– Dale

1 Like