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# Copyright (c) 2019-2022, Manfred Moitzi
# License: MIT License
import pathlib
import math
import ezdxf
from ezdxf.math import Vec3, UCS
import logging
# ------------------------------------------------------------------------------
# This example shows how to use diameter dimension.
#
# tutorial: https://ezdxf.mozman.at/docs/tutorials/diameter_dimension.html
# ------------------------------------------------------------------------------
logging.basicConfig(level="WARNING")
DXFVERSION = "R2013"
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# Default text attributes:
TEXT_ATTRIBS = {
"height": 0.25,
"style": ezdxf.options.default_dimension_text_style,
}
DIM_TEXT_STYLE = ezdxf.options.default_dimension_text_style
# Discarding the dimension rendering is possible for BricsCAD,
# but it is incompatible to AutoCAD -> error
BRICSCAD = False
def multiple_locations(delta=10, center=(0, 0)):
cx, cy = center
return [
(cx + delta, cy),
(cx + delta, cy + delta),
(cx, cy + delta),
(cx - delta, cy + delta),
(cx - delta, cy),
(cx - delta, cy - delta),
(cx, cy - delta),
(cx + delta, cy - delta),
]
def diameter_default_outside(dxfversion=DXFVERSION, delta=10):
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
msp.add_circle((x, y), radius=3)
# Default DimStyle EZ_RADIUS:
# 1 drawing unit == 1m;
# scale 1: 100;
# length_factor=100 -> measurement in cm
# closed filled arrow, size = 0.25
# DIMSTYLE settings:
# dimtmove = 1: use leader, is the best setting for text outside to
# preserve appearance of DIMENSION entity, if editing afterwards in
# BricsCAD (AutoCAD)
# center: specifies the center of the circle
# radius: specifies the radius of the circle
# angle: specifies the orientation (angle) of the dimension line
dim = msp.add_diameter_dim(
center=(x, y), radius=3, angle=angle, dimstyle="EZ_RADIUS"
)
# Necessary second step, to create the BLOCK entity with the DIMENSION
# geometry.
# Ezdxf supports DXF R2000 attributes for DXF R12 rendering, but they
# have to be applied by the DIMSTYLE override feature, this additional
# attributes are not stored in the XDATA section of the DIMENSION entity,
# they are just used to render the DIMENSION entity.
# The return value `dim` is not a DIMENSION entity, instead a
# DimStyleOverride object is returned, the DIMENSION entity is stored
# as dim.dimension, see also ezdxf.override.DimStyleOverride class.
dim.render(discard=BRICSCAD)
doc.set_modelspace_vport(height=3 * delta)
doc.saveas(CWD / f"dim_diameter_{dxfversion}_default_outside.dxf")
def diameter_default_inside(dxfversion=DXFVERSION, delta=10, dimtmove=0):
def add_dim(x, y, dimtad):
msp.add_circle((x, y), radius=3)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
angle=angle,
dimstyle="EZ_RADIUS_INSIDE",
override={
"dimtad": dimtad,
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
style = doc.dimstyles.get("EZ_RADIUS_INSIDE")
style.dxf.dimtmove = dimtmove
# Default DimStyle EZ_RADIUS_INSIDE:
# 1 drawing unit == 1m;
# scale 1: 100;
# length_factor=100 -> measurement in cm
# closed filled arrow, size = 0.25
# DIMSTYLE settings:
# dimtmove = 0: keep dim line with text, is the best setting for text inside
# to preserve appearance of DIMENSION entity, if editing afterwards in
# BricsCAD (AutoCAD)
# dimtix = 1: force text inside
# dimatfit = 0: force text inside, required by BricsCAD (AutoCAD)
# dimtad = 0: center text vertical, BricsCAD (AutoCAD) always creates
# vertical centered text,
# Ezdxf let you choose the vertical placement (above, below, center),
# but editing the DIMENSION in BricsCAD will reset text to center placement.
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, dimtad=1) # above
add_dim(x + 3 * delta, y, dimtad=0) # center
add_dim(x + 6 * delta, y, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta)
doc.saveas(
CWD
/ f"dim_diameter_{dxfversion}_default_inside_dimtmove_{dimtmove}.dxf"
)
def diameter_default_outside_horizontal(dxfversion=DXFVERSION, delta=10):
def add_dim(x, y, dimtad):
msp.add_circle((x, y), radius=3)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
angle=angle,
dimstyle="EZ_RADIUS",
override={
"dimtoh": 1, # force text outside horizontal
"dimtad": dimtad,
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, dimtad=1) # above
add_dim(x + 3 * delta, y, dimtad=0) # center
add_dim(x + 6 * delta, y, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta, center=(4.5 * delta, 0))
doc.saveas(
CWD / f"dim_diameter_{dxfversion}_default_outside_horizontal.dxf"
)
def diameter_default_inside_horizontal(
dxfversion=DXFVERSION, delta=10, dimtmove=0
):
doc = ezdxf.new(dxfversion, setup=True)
style = doc.dimstyles.get("EZ_RADIUS_INSIDE")
style.dxf.dimtmove = dimtmove
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
msp.add_circle((x, y), radius=3)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
angle=angle,
dimstyle="EZ_RADIUS_INSIDE",
override={
"dimtih": 1, # force text inside horizontal
},
)
dim.render(discard=BRICSCAD)
doc.set_modelspace_vport(height=3 * delta)
doc.saveas(
CWD
/ f"dim_diameter_{dxfversion}_default_inside_horizontal_dimtmove_{dimtmove}.dxf"
)
def diameter_user_defined_outside(dxfversion=DXFVERSION, delta=15):
def add_dim(x, y, radius, dimtad):
center = Vec3(x, y)
msp.add_circle((x, y), radius=3)
dim_location = center + Vec3.from_deg_angle(angle, radius)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
location=dim_location,
dimstyle="EZ_RADIUS",
override={
"dimtad": dimtad,
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, 5, dimtad=1) # above
add_dim(x + 3 * delta, y, 5, dimtad=0) # center
add_dim(x + 6 * delta, y, 5, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta, center=(4.5 * delta, 0))
doc.saveas(CWD / f"dim_diameter_{dxfversion}_user_defined_outside.dxf")
def diameter_user_defined_outside_horizontal(dxfversion=DXFVERSION, delta=15):
def add_dim(x, y, radius, dimtad):
center = Vec3(x, y)
msp.add_circle((x, y), radius=3)
dim_location = center + Vec3.from_deg_angle(angle, radius)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
location=dim_location,
dimstyle="EZ_RADIUS",
override={
"dimtad": dimtad,
"dimtoh": 1, # force text outside horizontal
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, 5, dimtad=1) # above
add_dim(x + 3 * delta, y, 5, dimtad=0) # center
add_dim(x + 6 * delta, y, 5, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta, center=(4.5 * delta, 0))
doc.saveas(
CWD / f"dim_diameter_{dxfversion}_user_defined_outside_horizontal.dxf"
)
def diameter_user_defined_inside(dxfversion=DXFVERSION, delta=10, dimtmove=0):
def add_dim(x, y, radius, dimtad):
center = Vec3(x, y)
msp.add_circle((x, y), radius=3)
dim_location = center + Vec3.from_deg_angle(angle, radius)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
location=dim_location,
dimstyle="EZ_RADIUS",
override={
"dimtad": dimtad,
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
style = doc.dimstyles.get("EZ_RADIUS")
style.dxf.dimtmove = dimtmove
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, 1, dimtad=1) # above
add_dim(x + 3 * delta, y, 1, dimtad=0) # center
add_dim(x + 6 * delta, y, 1, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta, center=(4.5 * delta, 0))
doc.saveas(
CWD
/ f"dim_diameter_{dxfversion}_user_defined_inside_dimtmove_{dimtmove}.dxf"
)
def diameter_user_defined_inside_horizontal(dxfversion=DXFVERSION, delta=10):
def add_dim(x, y, radius, dimtad):
center = Vec3(x, y)
msp.add_circle((x, y), radius=3)
dim_location = center + Vec3.from_deg_angle(angle, radius)
dim = msp.add_diameter_dim(
center=(x, y),
radius=3,
location=dim_location,
dimstyle="EZ_RADIUS",
override={
"dimtad": dimtad,
"dimtih": 1, # force text inside horizontal
},
)
dim.render(discard=BRICSCAD)
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
angle = Vec3(x, y).angle_deg
add_dim(x, y, 1, dimtad=1) # above
add_dim(x + 3 * delta, y, 1, dimtad=0) # center
add_dim(x + 6 * delta, y, 1, dimtad=4) # below
doc.set_modelspace_vport(height=3 * delta, center=(4.5 * delta, 0))
doc.saveas(
CWD / f"dim_diameter_{dxfversion}_user_defined_inside_horizontal.dxf"
)
def diameter_3d(dxfversion=DXFVERSION, delta=10):
doc = ezdxf.new(dxfversion, setup=True)
msp = doc.modelspace()
for x, y in multiple_locations(delta=delta):
ucs = UCS(origin=(x, y, 0)).rotate_local_x(math.radians(45))
angle = Vec3(x, y).angle_deg
msp.add_circle((0, 0), radius=3).transform(ucs.matrix)
dim = msp.add_diameter_dim(
center=(0, 0), radius=3, angle=angle, dimstyle="EZ_RADIUS"
)
dim.render(discard=BRICSCAD, ucs=ucs)
doc.set_modelspace_vport(height=3 * delta)
doc.saveas(CWD / f"dim_diameter_{dxfversion}_3d.dxf")
if __name__ == "__main__":
diameter_default_outside()
diameter_default_inside(dimtmove=0) # dimline from center
diameter_default_inside(dimtmove=1) # dimline from text
diameter_default_outside_horizontal()
diameter_default_inside_horizontal(dimtmove=0) # dimline from center
diameter_default_inside_horizontal(dimtmove=1) # dimline from text
diameter_user_defined_outside()
diameter_user_defined_outside_horizontal()
diameter_user_defined_inside(dimtmove=0) # dimline from text, also for 1
diameter_user_defined_inside(dimtmove=2) # dimline from center
diameter_user_defined_inside_horizontal()
diameter_3d()
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