# Copyright (c) 2016-2022 Manfred Moitzi # License: MIT License from typing import cast import pathlib import ezdxf from ezdxf.document import Drawing CWD = pathlib.Path("~/Desktop/Outbox").expanduser() if not CWD.exists(): CWD = pathlib.Path(".") # ------------------------------------------------------------------------------ # setup DXF R2000 paperspace layout # # For most use cases a paperspace scaling of 1:1 is to prefer and important: # the paperspace scaling has no influence on the VIEWPORT scaling - this is a # total different topic, see example "viewports_in_paperspace.py" # # docs about layouts: https://ezdxf.mozman.at/docs/layouts/index.html # ------------------------------------------------------------------------------ FILENAME = "page_setup_R2000.dxf" def draw_raster(doc: Drawing): marker = doc.blocks.new(name="MARKER") attribs = {"color": 2} marker.add_line((-1, 0), (1, 0), dxfattribs=attribs) marker.add_line((0, -1), (0, 1), dxfattribs=attribs) marker.add_circle((0, 0), 0.4, dxfattribs=attribs) marker.add_attdef( "XPOS", (0.5, -1.0), dxfattribs={"height": 0.25, "color": 4} ) marker.add_attdef( "YPOS", (0.5, -1.5), dxfattribs={"height": 0.25, "color": 4} ) modelspace = doc.modelspace() for x in range(10): for y in range(10): xcoord = x * 10 ycoord = y * 10 values = { "XPOS": f"x = {xcoord}", "YPOS": f"y = {ycoord}", } modelspace.add_auto_blockref("MARKER", (xcoord, ycoord), values) def setup_active_viewport_configuration(doc: Drawing): # This creates a multi-window configuration for the modelspace. # # delete the current '*Active' viewport configuration doc.viewports.delete_config("*ACTIVE") # the available display area in AutoCAD has the virtual lower-left # corner (0, 0) and the virtual upper-right corner (1, 1) # first viewport, uses the left half of the screen viewport = doc.viewports.new("*ACTIVE") viewport.dxf.lower_left = (0, 0) viewport.dxf.upper_right = (0.5, 1) # target point defines the origin of the DCS, this is the default value viewport.dxf.target = (0, 0, 0) # move this location (in DCS) to the center of the viewport viewport.dxf.center = (40, 30) # height of viewport in drawing units, this parameter works viewport.dxf.height = 15 # aspect ratio of viewport (x/y) viewport.dxf.aspect_ratio = 1.0 # second viewport, uses the right half of the screen viewport = doc.viewports.new("*ACTIVE") viewport.dxf.lower_left = (0.5, 0) viewport.dxf.upper_right = (1, 1) # target point defines the origin of the DCS viewport.dxf.target = (60, 20, 0) # move this location (in DCS, model space = 60, 20) to the center of the viewport viewport.dxf.center = (0, 0) # height of viewport in drawing units, this parameter works viewport.dxf.height = 15 # aspect ratio of viewport (x/y) viewport.dxf.aspect_ratio = 2.0 def setup_paperspace_layouts(doc: Drawing): setup_layout1(doc) setup_layout2(doc) setup_layout3(doc) setup_layout4(doc) def setup_layout1(doc: Drawing): from ezdxf.layouts import Paperspace name = "Layout1" if name in doc.layouts: layout = cast(Paperspace, doc.layouts.get(name)) else: layout = doc.layouts.new(name) layout.page_setup( size=(11, 8.5), margins=(0.5, 0.5, 0.5, 0.5), units="inch" ) lower_left, upper_right = layout.get_paper_limits() x1, y1 = lower_left x2, y2 = upper_right center = lower_left.lerp(upper_right) # Add DXF entities to the "Layout1" in paperspace coordinates: layout.add_line((x1, center.y), (x2, center.y)) # horizontal center line layout.add_line((center.x, y1), (center.x, y2)) # vertical center line layout.add_circle((0, 0), radius=0.1) # plot origin def setup_layout2(doc: Drawing): layout2 = doc.layouts.new("scale 1-1") # The default paperspace scale is 1:1 # 1 mm printed is 1 drawing unit in paperspace # For most use cases this is the preferred scaling and important fact: # the paperspace scaling has no influence on the VIEWPORT scaling - this is # a total different topic, see example "viewports_in_paperspace.py" layout2.page_setup(size=(297, 210), margins=(10, 10, 10, 10), units="mm") layout2.add_viewport( # center of viewport in paperspace units center=(100, 100), # viewport size in paperspace units size=(50, 50), # modelspace point to show in center of viewport in WCS view_center_point=(60, 40), # how much modelspace area to show in viewport in drawing units view_height=20, status=2, ) lower_left, upper_right = layout2.get_paper_limits() x1, y1 = lower_left x2, y2 = upper_right center = lower_left.lerp(upper_right) # Add DXF entities to the "Layout1" in paperspace coordinates: layout2.add_line((x1, center.y), (x2, center.y)) # horizontal center line layout2.add_line((center.x, y1), (center.x, y2)) # vertical center line layout2.add_circle((0, 0), radius=5) # plot origin def setup_layout3(doc: Drawing): layout3 = doc.layouts.new("scale 1-50") # The paperspace is scaled 1:50 # 1 mm printed is 50 drawing unit in paperspace layout3.page_setup( size=(297, 210), margins=(10, 10, 10, 10), units="mm", scale=(1, 50) ) layout3.add_viewport( # center of viewport in paperspace units, scale = 1:50 center=(5000, 5000), # viewport size in paperspace units, scale = 1:50 size=(5000, 2500), # model space point to show in center of viewport in WCS view_center_point=(60, 40), # how much model space area to show in viewport in drawing units view_height=20, status=2, ) layout3.add_circle((0, 0), radius=250) # plot origin def setup_layout4(doc: Drawing): layout4 = doc.layouts.new("scale 1-1 with offset") # The paperspace is scaled 1:1 but has a plot offset # 1 mm printed is 1 drawing unit in paperspace layout4.page_setup( size=(297, 210), margins=(10, 10, 10, 10), units="mm", scale=(1, 1), offset=(50, 50), ) lower_left, upper_right = layout4.get_paper_limits() x1, y1 = lower_left x2, y2 = upper_right center = lower_left.lerp(upper_right) layout4.add_line((x1, center.y), (x2, center.y)) # horizontal center line layout4.add_line((center.x, y1), (center.x, y2)) # vertical center line layout4.add_circle((0, 0), radius=5) # plot origin def main(): doc = ezdxf.new("R2000") draw_raster(doc) setup_active_viewport_configuration(doc) setup_paperspace_layouts(doc) doc.saveas(CWD / FILENAME) print(f'DXF file "{FILENAME}" created.') if __name__ == "__main__": main()