GetObject.GeometryAttributeFilter Property

GetObjectGeometryAttributeFilter Property

The geometry attribute filter provides a secondary filter that can be used to restrict which objects can be selected. Control of the type of geometry (points, curves, surfaces, meshes, etc.) is provided by GetObject.SetGeometryFilter. The geometry attribute filter is used to require the selected geometry to have certain attributes (open, closed, etc.). The default attribute filter permits selection of all types of geometry.

Namespace:  Rhino.Input.Custom
Assembly:  RhinoCommon (in RhinoCommon.dll)
Since: 5.0
Syntax
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public GeometryAttributeFilter GeometryAttributeFilter { get; set; }
Public Property GeometryAttributeFilter As GeometryAttributeFilter
	Get
	Set

Property Value

Type: GeometryAttributeFilter
Examples
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partial class Examples
{
  public static Rhino.Commands.Result CircleCenter(Rhino.RhinoDoc doc)
  {
    Rhino.Input.Custom.GetObject go = new Rhino.Input.Custom.GetObject();
    go.SetCommandPrompt("Select objects");
    go.GeometryFilter = Rhino.DocObjects.ObjectType.Curve;
    go.GeometryAttributeFilter = Rhino.Input.Custom.GeometryAttributeFilter.ClosedCurve;
    go.GetMultiple(1, 0);
    if( go.CommandResult() != Rhino.Commands.Result.Success )
      return go.CommandResult();

    Rhino.DocObjects.ObjRef[] objrefs = go.Objects();
    if( objrefs==null )
      return Rhino.Commands.Result.Nothing;

    double tolerance = doc.ModelAbsoluteTolerance;
    for( int i=0; i<objrefs.Length; i++ )
    {
      // get the curve geometry
      Rhino.Geometry.Curve curve = objrefs[i].Curve();
      if( curve==null )
        continue;
      Rhino.Geometry.Circle circle;
      if( curve.TryGetCircle(out circle, tolerance) )
      {
        Rhino.RhinoApp.WriteLine("Circle{0}: center = {1}", i+1, circle.Center);
      }
    }
    return Rhino.Commands.Result.Success;
  }
}
Partial Class Examples
  Public Shared Function CircleCenter(ByVal doc As Rhino.RhinoDoc) As Rhino.Commands.Result
    Dim go As New Rhino.Input.Custom.GetObject()
    go.SetCommandPrompt("Select objects")
    go.GeometryFilter = Rhino.DocObjects.ObjectType.Curve
    go.GeometryAttributeFilter = Rhino.Input.[Custom].GeometryAttributeFilter.ClosedCurve
    go.GetMultiple(1, 0)
    If go.CommandResult() <> Rhino.Commands.Result.Success Then
      Return go.CommandResult()
    End If

    Dim objrefs As Rhino.DocObjects.ObjRef() = go.Objects()
    If objrefs Is Nothing Then
      Return Rhino.Commands.Result.[Nothing]
    End If

    Dim tolerance As Double = doc.ModelAbsoluteTolerance
    For i As Integer = 0 To objrefs.Length - 1
      ' get the curve geometry
      Dim curve As Rhino.Geometry.Curve = objrefs(i).Curve()
      If curve Is Nothing Then
        Continue For
      End If
      Dim circle As Rhino.Geometry.Circle
      If curve.TryGetCircle(circle, tolerance) Then
        Rhino.RhinoApp.WriteLine("Circle{0}: center = {1}", i + 1, circle.Center)
      End If
    Next
    Return Rhino.Commands.Result.Success
  End Function
End Class
Python
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import Rhino
import scriptcontext

def CircleCenter():
    go = Rhino.Input.Custom.GetObject()
    go.SetCommandPrompt("Select objects")
    go.GeometryFilter = Rhino.DocObjects.ObjectType.Curve
    go.GeometryAttributeFilter = Rhino.Input.Custom.GeometryAttributeFilter.ClosedCurve
    go.GetMultiple(1, 0)
    if go.CommandResult()!=Rhino.Commands.Result.Success:
        return go.CommandResult()

    objrefs = go.Objects()
    if not objrefs: return Rhino.Commands.Result.Nothing

    tolerance = scriptcontext.doc.ModelAbsoluteTolerance
    for i, objref in enumerate(objrefs):
        # get the curve geometry
        curve = objref.Curve()
        if not curve: continue
        rc, circle = curve.TryGetCircle( tolerance )
        if rc:
            print "Circle", i+1, ": center = ", circle.Center
    return Rhino.Commands.Result.Success

if __name__=="__main__":
    CircleCenter()
See Also

P:Rhino.Input.Custom.GetObject.GeometryAttributeFilter