How to set start and end points of an arc.

[xDylan03x]

I am trying to create a circular segment (or arc segment) and it seems that the 'start_point' and 'end_point' parameters are no longer accepted. What would be the best way to go about this? Thanks

arc = document.msp.add_arc((self.midPoint, -38.3214), 38.3214, 0, 180, start_point=self.startPoint, end_point=self.endPoint, dxfattribs={"layer": "Visible"})

TypeError: CreatorInterface.add_arc() got an unexpected keyword argument 'start_point'

[mozman]

The add_arc() method had never the arguments start_point and end_point because it always used only the geometry parameters center, radius, start_angle and end_angle of the underlying DXF ARC entity to create an arc.

You can use the construction tool ezdxf.math.ConstructionArc to create arcs from 3 points by the classmethod from_3p() and add the arc by the add_to_layout() method to a layout like the modelspace.

import ezdxf
from ezdxf.math import ConstructionArc

doc = ezdxf.new()
arc = ConstructionArc.from_3p(start_point=(0, 0), end_point=(10, 0), def_point=(5, 3), ccw=False)
arc.add_to_layout(doc.modelspace(), dxfattribs={"color": ezdxf.colors.RED})
doc.saveas("arc.dxf")

[xDylan03x]

That worked great. Thanks.