I like to build curves ( reverse engineering) using somthing like biarc interpolation tool I found in MOI3D cad. I import a reference image, then draw with a mouse and export in dxf.\ There are onle LINEs and ARCs sequences in dxf now.\ I rewrote python example to save the LINE and ARC parameters to turtle code.\ I have not enough skills to write fully automatic routine. So you need manually turn arcs left/right.

import ezdxf

import math

def extract_dwg_data(file_path):

    try:

        # Leer el archivo DXF

        doc = ezdxf.readfile(file_path)

    except IOError:

        print(f"No se puede leer el archivo: {file_path}")

        return None

    except ezdxf.DXFStructureError:

        print(f"Archivo DXF no válido: {file_path}")

        return None

    # Obtener el espacio de modelo

    modelspace = doc.modelspace()

    def extract_entities(entities):

        extracted_data = []

        for entity in entities:

            entity_data = {"type": entity.dxftype()}

            if entity.dxftype() == 'LINE':

                entity_data["start_point"] = entity.dxf.start

                entity_data["end_point"] = entity.dxf.end

            elif entity.dxftype() == 'CIRCLE':

                entity_data["center_point"] = entity.dxf.center

                entity_data["radius"] = entity.dxf.radius

            elif entity.dxftype() == 'ARC':

                entity_data["center_point"] = entity.dxf.center

                entity_data["radius"] = entity.dxf.radius

                entity_data["start_angle"] = entity.dxf.start_angle

                entity_data["end_angle"] = entity.dxf.end_angle

            extracted_data.append(entity_data)

        return extracted_data

    def extract_dimension_data(entity):

        dim_data = {

            "dimtype": entity.dimtype,

            "text": entity.dxf.text,

            "insert_point": entity.dxf.insert,

        }

        dim_type = entity.dimtype

        if dim_type == 0:  # Rotated, horizontal, or vertical linear dimension

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2]

        elif dim_type == 1:  # Aligned linear dimension

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2]

        elif dim_type == 2:  # Angular dimension (2 lines)

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3, entity.dxf.defpoint4]

        elif dim_type == 3:  # Diameter dimension

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2]

        elif dim_type == 4:  # Radius dimension

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2]

        elif dim_type == 5:  # Angular dimension (3 points)

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3]

        elif dim_type == 6:  # Angular dimension (4 points)

            dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3, entity.dxf.defpoint4]

        return dim_data

    data = extract_entities(modelspace)

    return data

def create_dwg_file(output_path, data):

    doc = ezdxf.new(dxfversion="R2010")

    modelspace = doc.modelspace()

    lv = 0;

    dv = [0,0];

    print ("path =  turtle3d([")

    for entity in data:

        entity_type = entity.get("type")

        if entity_type == "LINE":

            lv = math.sqrt((entity["end_point"][0] - entity["start_point"][0] )**2 + (entity["end_point"][1] - entity["start_point"][1] )**2)

            dv[0] = (entity["end_point"][0] - entity["start_point"][0] )/lv

            dv[1] = (entity["end_point"][1] - entity["start_point"][1] )/lv

            print ("\"setdir\",[", dv[0],",",dv[1] , "],")

            print ("\"move\",",lv,",")

            modelspace.add_line(entity["start_point"], entity["end_point"])

        elif entity_type == "CIRCLE":

            modelspace.add_circle(entity["center_point"], entity["radius"])

        elif entity_type == "ARC":

            print( "[\"arc\",", entity["radius"], ",\"left\",",  entity["end_angle"]  -  entity["start_angle"],     ", \"steps\", 10 ]," )

 #           modelspace.add_arc(entity["center_point"], entity["radius"], entity["start_angle"], entity["end_angle"])

    print("],transforms=true);")

    print("sweep(circle(1),path);")

    doc.saveas(output_path)

# Uso del script

dwg_file = r"bell1.dxf"

output_file = r"extracted_data.dxf"

extracted_data = extract_dwg_data(dwg_file)

# Guardar los datos extraídos en un nuevo archivo DXF

if extracted_data:

    create_dwg_file(output_file, extracted_data)

# Ejemplo de cómo usar los datos extraídos

if extracted_data:

    output = ",\n".join(str(entity) for entity in extracted_data)

#    print(output)

``` import ezdxf ``` ``` import math ``` ``` def extract_dwg_data(file_path): ``` ``` try: ``` ``` # Leer el archivo DXF ``` ``` doc = ezdxf.readfile(file_path) ``` ``` except IOError: ``` ``` print(f"No se puede leer el archivo: {file_path}") ``` ``` return None ``` ``` except ezdxf.DXFStructureError: ``` ``` print(f"Archivo DXF no válido: {file_path}") ``` ``` return None ``` ``` # Obtener el espacio de modelo ``` ``` modelspace = doc.modelspace() ``` ``` def extract_entities(entities): ``` ``` extracted_data = [] ``` ``` for entity in entities: ``` ``` entity_data = {"type": entity.dxftype()} ``` ``` if entity.dxftype() == 'LINE': ``` ``` entity_data["start_point"] = entity.dxf.start ``` ``` entity_data["end_point"] = entity.dxf.end ``` ``` elif entity.dxftype() == 'CIRCLE': ``` ``` entity_data["center_point"] = entity.dxf.center ``` ``` entity_data["radius"] = entity.dxf.radius ``` ``` elif entity.dxftype() == 'ARC': ``` ``` entity_data["center_point"] = entity.dxf.center ``` ``` entity_data["radius"] = entity.dxf.radius ``` ``` entity_data["start_angle"] = entity.dxf.start_angle ``` ``` entity_data["end_angle"] = entity.dxf.end_angle ``` ``` extracted_data.append(entity_data) ``` ``` return extracted_data ``` ``` def extract_dimension_data(entity): ``` ``` dim_data = { ``` ``` "dimtype": entity.dimtype, ``` ``` "text": entity.dxf.text, ``` ``` "insert_point": entity.dxf.insert, ``` ``` } ``` ``` dim_type = entity.dimtype ``` ``` if dim_type == 0: # Rotated, horizontal, or vertical linear dimension ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2] ``` ``` elif dim_type == 1: # Aligned linear dimension ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2] ``` ``` elif dim_type == 2: # Angular dimension (2 lines) ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3, entity.dxf.defpoint4] ``` ``` elif dim_type == 3: # Diameter dimension ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2] ``` ``` elif dim_type == 4: # Radius dimension ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2] ``` ``` elif dim_type == 5: # Angular dimension (3 points) ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3] ``` ``` elif dim_type == 6: # Angular dimension (4 points) ``` ``` dim_data["defpoints"] = [entity.dxf.defpoint, entity.dxf.defpoint2, entity.dxf.defpoint3, entity.dxf.defpoint4] ``` ``` return dim_data ``` ``` data = extract_entities(modelspace) ``` ``` return data ``` ``` def create_dwg_file(output_path, data): ``` ``` doc = ezdxf.new(dxfversion="R2010") ``` ``` modelspace = doc.modelspace() ``` ``` lv = 0; ``` ``` dv = [0,0]; ``` ``` print ("path = turtle3d([") ``` ``` for entity in data: ``` ``` entity_type = entity.get("type") ``` ``` if entity_type == "LINE": ``` ``` lv = math.sqrt((entity["end_point"][0] - entity["start_point"][0] )**2 + (entity["end_point"][1] - entity["start_point"][1] )**2) ``` ``` dv[0] = (entity["end_point"][0] - entity["start_point"][0] )/lv ``` ``` dv[1] = (entity["end_point"][1] - entity["start_point"][1] )/lv ``` ``` print ("\"setdir\",[", dv[0],",",dv[1] , "],") ``` ``` print ("\"move\",",lv,",") ``` ``` modelspace.add_line(entity["start_point"], entity["end_point"]) ``` ``` elif entity_type == "CIRCLE": ``` ``` modelspace.add_circle(entity["center_point"], entity["radius"]) ``` ``` elif entity_type == "ARC": ``` ``` print( "[\"arc\",", entity["radius"], ",\"left\",", entity["end_angle"] - entity["start_angle"], ", \"steps\", 10 ]," ) ``` ``` # modelspace.add_arc(entity["center_point"], entity["radius"], entity["start_angle"], entity["end_angle"]) ``` ``` print("],transforms=true);") ``` ``` print("sweep(circle(1),path);") ``` ``` doc.saveas(output_path) ``` ``` # Uso del script ``` ``` dwg_file = r"bell1.dxf" ``` ``` output_file = r"extracted_data.dxf" ``` ``` extracted_data = extract_dwg_data(dwg_file) ``` ``` # Guardar los datos extraídos en un nuevo archivo DXF ``` ``` if extracted_data: ``` ``` create_dwg_file(output_file, extracted_data) ``` ``` # Ejemplo de cómo usar los datos extraídos ``` ``` if extracted_data: ``` ``` output = ",\n".join(str(entity) for entity in extracted_data) ``` ``` # print(output) ```

the above example is closed path. The result turtle code needs to be edited.\ \ python code attached