How to set Dashdot type for line,arc,circle and so on?

Rhino Developer
1

How to implement it like below ?

LineType.png1376×724 169 KB

2

@kaicihuang,

you can set the linetype in the object attributes. Below a python example, it should work very similar using RhinoCommon:

import Rhino
import scriptcontext
    
def DoSomething():
    
    plane = Rhino.Geometry.Plane.WorldXY
    circle = Rhino.Geometry.Circle(plane, 10.0)
    
    index = scriptcontext.doc.Linetypes.Find("DashDot", True)
    if index < 0: return None
    
    source = Rhino.DocObjects.ObjectLinetypeSource.LinetypeFromObject
    
    attr = Rhino.DocObjects.ObjectAttributes()
    attr.LinetypeSource = source
    attr.LinetypeIndex = index
    
    scriptcontext.doc.Objects.AddCircle(circle, attr)
    scriptcontext.doc.Views.Redraw()
    
if __name__=="__main__":
    DoSomething()

c.

3

Thank you for help.
This example is good for me.

My solution:

        Rhino.Geometry.Point3d center = new Rhino.Geometry.Point3d( 0, 0, 0 );
        const double radius = 10.0;
        Rhino.Geometry.Circle c = new Rhino.Geometry.Circle( center, radius );
        //
        var attrib = new ObjectAttributes();
        attrib.LinetypeIndex = RhinoDoc.ActiveDoc.Linetypes.Find("DashDot", true);
        attrib.LinetypeSource = ObjectLinetypeSource.LinetypeFromObject;

        if (Rhino.RhinoDoc.ActiveDoc.Objects.AddCircle(c, attrib) != Guid.Empty)
        {
             ...
        }