Styjun

I need to write text in DXF drawing mirrored. I use python and ezdxf module. According to docs there are some flags to be set but I always get DXFAttributeError.

I try to use 'text_generation_flags': 2 and 'text_direction': (-1, 0, 0)

here is my code (works well without mirroring attempst)

def publish_face_no_bolts(poly, label, filename):

 t = poly.get_default_transformation()
 trans_poly = poly.transform(t)
 # trans_poly = trans_poly.make_coordinates_positive()
 points = transformation.points_3d_to_2d(trans_poly.poly_points)
 points.append(points[0]) # must close polygon

 drawing = ezdxf.new(dxfversion='AC1024') # or use the AutoCAD release name ezdxf.new(dxfversion='R2010')
 modelspace = drawing.modelspace()

 modelspace.add_lwpolyline(points, dxfattribs='color': 7)

 drawing.layers.new('TEXTLAYER', dxfattribs='color': 1)

 # use set_pos() for proper TEXT alignment - the relations between halign, valign, insert and align_point are tricky.


 # drawing.styles.new('mirrored', dxfattribs='text_generation_flags': 2)
 # 'text_direction': (0, 1, 0), # write in y direction
 drawing.styles.new('mirrored', dxfattribs= 'text_direction': (-1, 0, 0))

 err, cx, cy = polygon.centroid2d(points)

 modelspace.add_text(label, dxfattribs='layer': 'TEXTLAYER', 'text_direction': (-1, 0, 0), 'height': 4).set_pos((cx, cy), align='CENTER')
 drawing.saveas(filename)

Which flag to use and how to set it in a proper way?

I've not used ezdxf, but text_direction is a property of an MTEXT entity (DXF group 11), and is another way to effectively control the rotation of the MText.

To mirror a single-line TEXT entity, you'll want to set DXF group 71 to 2, which, after briefly looking over the code for ezdxf, looks to be implemented as as the text_generation_flag parameter.

Hence, I would suggest:

modelspace.add_text(label, dxfattribs='layer': 'TEXTLAYER', 'text_generation_flag': 2, 'height': 4).set_pos((cx, cy), align='CENTER')