2d LINE and ARC into 3d extruded 3d model ?

[manpowre]

I have been looking into ezdxf last few days, got to know LINE, ARC, LWPOLYLINE, etc... pretty well. made code to open a dxf file, recreate LINE and ARC's into a new file, even converting it to lwpolyline. My goal is to make this so the 2d drawing which comes from locked software into a 3d model as the output changes every day.

I thought just to ask the community if what I am trying to achieve is possible at all ?

From this LINE and ARC's only:

to this:

I have made a function that converts the line's into lwpolyline with z as the height factor (either start or end + height). I slightly looked into arc, but I figured if I cant extrude the line's into a 3d face, then I wont dig further. When I open up the new dxf, the lwpolylines is not extruded in the z axis.

`
for entity in msp:
if entity.dxftype() == "LINE":
start = entity.dxf.start
end = entity.dxf.end
start_3d = (start[0], start[1], start[2] + 1)
end_3d = (end[0], end[1], end[2] + 1)

        polyline= new_msp.add_lwpolyline([start_3d, end_3d], dxfattribs={
            "layer": entity.dxf.layer,
            "color": entity.dxf.color,
            "linetype": entity.dxf.linetype,
            "lineweight": entity.dxf.lineweight,                
        })

`

Well actually closing the top and bottom is next step.

What do you all think, possible ?

[manpowre]

It dawned on me upon writing the above. make faces out of 2 polylines with vertice1 and vertice2. good to have someone to talk to.

def convert_to_polyline(input_file, output_file, thickness):
doc = ezdxf.readfile(input_file)
new_doc = ezdxf.new()
msp = doc.modelspace()
new_msp = new_doc.modelspace()
mesh = new_msp.add_mesh()
for entity in msp:
if entity.dxftype() == "LINE":
start = entity.dxf.start
end = entity.dxf.end
vertices1 = [(start[0], start[1], 0), (end[0], end[1], 0)]
vertices2 = [(start[0], start[1], thickness), (end[0], end[1], thickness)]

        face_vertices = vertices1 + vertices2
        with mesh.edit_data() as mesh_data:
            mesh_data.add_face(face_vertices)
            mesh_data.optimize()

new_doc.saveas(output_file)

[mozman]

Hi!

Ezdxf is not the right tool for these tasks. I tried this myself and it involved a lot of rework in BricsCAD.

My recommendation are packages designed for these tasks:

• build123d
• solidpython2

[manpowre]

Thank you for these tips. yeah, I think I came to the end with ezdzf, atleast for the 3d part. For the dxf part to read the files I might still use ezdxf. again thanks

[manpowre]

I messed around a bit more with ARC to faces, but had to split the ARC into 10 segments with some math, and it's not exactly what I was looking for, so I figured for now ezDXF is not the right tool.