dwg = ezdxf.new('R2010')
msp = dwg.modelspace()
# include-start
ucs = UCS(origin=(0, 2, 2), ux=(1, 0, 0), uz=(0, 1, 1))
msp.add_arc(
center=ucs.to_ocs((0, 0)),
radius=1,
start_angle=ucs.to_ocs_angle_deg(45), # shortcut
end_angle=ucs.to_ocs_angle_deg(270), # shortcut
dxfattribs={
'extrusion': ucs.uz,
'color': 2,
})
center = ucs.to_wcs((0, 0))
msp.add_line(
start=center,
end=ucs.to_wcs(Vector.from_deg_angle(45)),
dxfattribs={'color': 2},
)
msp.add_line(
start=center,
end=ucs.to_wcs(Vector.from_deg_angle(270)),
dxfattribs={'color': 2},
)
# include-end
ucs.render_axis(msp)
dwg.saveas('ocs_arc.dxf')
# License: MIT License
# include-start
import ezdxf
from ezdxf.algebra import UCS, Vector
dwg = ezdxf.new('R2010')
msp = dwg.modelspace()
# thickness for text works only with shx fonts not with true type fonts
dwg.styles.new('TXT', dxfattribs={'font': 'romans.shx'})
ucs = UCS(origin=(0, 2, 2), ux=(1, 0, 0), uz=(0, 1, 1))
# calculation of text direction as angle in OCS:
# convert text rotation in degree into a vector in UCS
text_direction = Vector.from_deg_angle(-45)
# transform vector into OCS and get angle of vector in xy-plane
rotation = ucs.to_ocs(text_direction).angle_deg
text = msp.add_text(
text="TEXT",
dxfattribs={
# text rotation angle in degrees in OCS
'rotation': rotation,
'extrusion': ucs.uz,
'thickness': .333,
'color': 2,
'style': 'TXT',
})
# set text position in OCS
text.set_pos(ucs.to_ocs((0, 0, 0)), align='MIDDLE_CENTER')
import ezdxf
from ezdxf.algebra import Vector, UCS
dwg = ezdxf.new('R2010')
msp = dwg.modelspace()
# center point of the pentagon should be (0, 2, 2), and the shape is
# rotated around x-axis about 45 degree, to accomplish this I use an
# UCS with z-axis (0, 1, 1) and an x-axis parallel to WCS x-axis.
ucs = UCS(
origin=(0, 2, 2), # center of pentagon
ux=(1, 0, 0), # x-axis parallel to WCS x-axis
uz=(0, 1, 1), # z-axis
)
# calculating corner points in local (UCS) coordinates
points = [Vector.from_deg_angle((360 / 5) * n) for n in range(5)]
# converting UCS into OCS coordinates
ocs_points = list(ucs.points_to_ocs(points))
# LWPOLYLINE accepts only 2D points and has an separated DXF attribute elevation.
# All points have the same z-axis (elevation) in OCS!
elevation = ocs_points[0].z
msp.add_lwpolyline(
# LWPOLYLINE point format: (x, y, [start_width, [end_width, [bulge]]])
# the z-axis would be start_width, so remove it
points=[p[:2] for p in ocs_points],
dxfattribs={
'elevation': elevation,
'extrusion': ucs.uz,
'closed': True,
