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# Copyright (c) 2022, Manfred Moitzi
# License: MIT License
from typing import cast
import pathlib
import ezdxf
from ezdxf.layouts import Paperspace
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# ------------------------------------------------------------------------------
# This example shows how to override layer properties in VIEWPORT entities.
#
# VIEWPORT: https://ezdxf.mozman.at/docs/dxfentities/viewport.html
# LAYER: https://ezdxf.mozman.at/docs/tables/layer_table_entry.html
# TUTORIAL: https://ezdxf.mozman.at/docs/tutorials/psp_viewports.html
# ------------------------------------------------------------------------------
MESH_SIZE = 20
COUNT = 7
LAYER_NAME = "Layer{}"
PAPER_WIDTH = 22
PAPER_HEIGHT = 17
MARGIN = 1
def create_modelspace_content(msp):
x1 = 0
x2 = 100
for index in range(COUNT):
y = index * 10
layer_name = LAYER_NAME.format(index)
# color by layer
# linetype by layer
# linewidth by layer
msp.add_line((x1, y), (x2, y), dxfattribs={"layer": layer_name})
def original(vp_handle, doc):
pass
def override_aci(vp_handle, doc):
for index in range(COUNT):
layer = doc.layers.get(LAYER_NAME.format(index))
override = layer.get_vp_overrides()
override.set_color(vp_handle, index + 1)
override.commit()
RGB = [
(206, 25, 230),
(11, 84, 244),
(237, 141, 18),
(87, 242, 246),
(137, 109, 186),
(246, 246, 145),
(126, 235, 61),
]
def override_rgb(vp_handle, doc):
for index in range(COUNT):
layer = doc.layers.get(LAYER_NAME.format(index))
override = layer.get_vp_overrides()
override.set_rgb(vp_handle, RGB[index])
override.commit()
LTYPES = [
"DASHED2",
"DOT2",
"DASHED2",
"DOT2",
"DASHED2",
"DOT2",
"DASHED2",
"DOT2",
]
def override_ltype(vp_handle, doc):
for index in range(COUNT):
layer = doc.layers.get(LAYER_NAME.format(index))
override = layer.get_vp_overrides()
override.set_linetype(vp_handle, LTYPES[index])
override.commit()
LW = [13, 18, 25, 35, 50, 70, 100, 140]
def override_lw(vp_handle, doc):
for index in range(COUNT):
layer = doc.layers.get(LAYER_NAME.format(index))
override = layer.get_vp_overrides()
override.set_lineweight(vp_handle, LW[index])
override.commit()
def create_viewports(paperspace: Paperspace):
# Define viewports in paper space:
# center, size=(width, height) defines the viewport in paper space.
# view_center_point and view_height defines the area in model space
# which is displayed in the viewport.
doc = paperspace.doc
vp_height = 15
vp_width = 3
cx = vp_width / 2
cy = (PAPER_HEIGHT - 2 * MARGIN) / 2
status = 2
for func in (
original,
override_aci,
override_rgb,
override_ltype,
override_lw,
):
vp = paperspace.add_viewport(
center=(cx, cy),
size=(vp_width, vp_height),
view_center_point=(50, 30),
view_height=70,
status=status,
)
func(vp.dxf.handle, doc)
cx += vp_width + MARGIN
status += 1
def main():
def make(dxfversion):
doc = ezdxf.new(dxfversion, setup=True)
doc.header["$LWDISPLAY"] = 1 # show lineweight in DXF viewer
msp = doc.modelspace()
# create the default layer for VIEWPORT entities:
vp_layer = doc.layers.add("VIEWPORTS")
# switch viewport layer off to hide the viewport borderlines
vp_layer.off()
for index in range(COUNT):
doc.layers.add(LAYER_NAME.format(index))
create_modelspace_content(msp)
psp = cast(Paperspace, doc.layout("Layout1"))
psp.page_setup(
size=(PAPER_WIDTH, PAPER_HEIGHT),
margins=(MARGIN, MARGIN, MARGIN, MARGIN),
units="inch",
)
create_viewports(psp)
doc.set_modelspace_vport(60, (50, 30))
filename = f"viewport_overrides_{dxfversion}.dxf"
try:
doc.saveas(CWD / filename)
except IOError as e:
print(str(e))
make("R2000")
make("R2007")
make("R2018")
if __name__ == "__main__":
main()
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