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# Copyright (c) 2021-2022, Manfred Moitzi
# License: MIT License
import pathlib
import ezdxf
from ezdxf.math import Vec3, UCS
import logging
# ------------------------------------------------------------------------------
# This example shows how to use ordinate dimension.
#
# tutorial: https://ezdxf.mozman.at/docs/tutorials/ordinate_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 add_x_and_y_type(
msp, feature_location: Vec3, offset: Vec3, rotate: float, override
):
# Default DimStyle EZDXF:
# - linear units = 1 drawing unit = 1 m
# - scale 1:100
# - closed filled arrow, size = 0.25
# - text location above dimension line
#
# feature_location:
# measured location - measurement is the x- or y-distance from the
# origin
# offset:
# offset from the feature location to the end of the leader as vector
# origin:
# defines the origin in the render UCS (=WCS by default),
# the default origin is (0, 0)
dim = msp.add_ordinate_x_dim(
feature_location=feature_location,
offset=offset,
rotation=rotate,
override=override,
)
# 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)
# swap x, y axis of the offset for the y-type
offset = Vec3(offset.y, offset.x)
msp.add_ordinate_y_dim(
feature_location=feature_location,
offset=offset,
rotation=rotate,
override=override,
).render()
def ordinate_wcs(
filename: str,
rotate: float = 0.0,
override: dict = None,
):
doc = ezdxf.new(DXFVERSION, setup=True)
msp = doc.modelspace()
if override is None:
override = dict()
for dimtad, feature_location in [(1, (5, 20)), (0, (0, 0)), (4, (-5, -20))]:
override["dimtad"] = dimtad
add_x_and_y_type(
msp, Vec3(feature_location), Vec3(1, 3), rotate, override
)
add_x_and_y_type(
msp, Vec3(feature_location), Vec3(-1, 3), rotate, override
)
add_x_and_y_type(
msp, Vec3(feature_location), Vec3(1, -3), rotate, override
)
add_x_and_y_type(
msp, Vec3(feature_location), Vec3(-1, -3), rotate, override
)
doc.set_modelspace_vport(height=70)
doc.saveas(CWD / f"{filename}_{DXFVERSION}.dxf")
def ordinate_ucs(
filename: str,
rotate: float = 30.0,
):
doc = ezdxf.new(DXFVERSION, setup=True)
dimstyle = doc.dimstyles.duplicate_entry("EZDXF", "ORD_CENTER")
dimstyle.dxf.dimtad = 0
msp = doc.modelspace()
for origin in [Vec3(5, 20), Vec3(0, 0), Vec3(-5, -20)]:
ucs = UCS(origin, ux=Vec3.from_deg_angle(rotate), uz=(0, 0, 1))
msp.add_ordinate_x_dim(
feature_location=(3, 2),
offset=(1, 2),
dimstyle="ORD_CENTER"
).render(ucs=ucs)
msp.add_ordinate_y_dim(
feature_location=(3, 2),
offset=(1, -2),
dimstyle="ORD_CENTER"
).render(ucs=ucs)
doc.set_modelspace_vport(height=70)
doc.saveas(CWD / f"{filename}_{DXFVERSION}.dxf")
if __name__ == "__main__":
ordinate_wcs(filename="ordinate_wcs")
ordinate_wcs(filename="ordinate_rot_30_deg_wcs", rotate=30)
ordinate_ucs(filename="ordinate_ucs", rotate=30)
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