def test_cube():
c = cube(center=True)
assert len(c.vertices) == 8
assert len(c.faces) == 6
c = cube(center=False)
assert len(c.vertices) == 8
assert len(c.faces) == 6
def test_bolt():
shaft = cylinder_2p(count=32,
base_center=(0, 0, 0),
top_center=(1, 0, 0),
radius=0.1)
head = cone_2p(base_center=(-0.12, 0, 0), apex=(0.1, 0, 0), radius=0.25)
notch1 = cube().translate(-0.1, 0, 0).scale(0.02, 0.20, 0.02)
notch2 = cube().translate(-0.1, 0, 0).scale(0.02, 0.02, 0.20)
bolt = CSG(shaft) + CSG(head) - CSG(notch1) - CSG(notch2)
def test_mesh(msp, basic):
# draw mesh as wire frame
c = cube()
c.render(msp)
basic.draw_entities(msp)
result = basic.out.collector
assert len(result) == 24
assert unique_types(result) == {'line'}
def test_polyface(msp, basic):
# draw mesh as wire frame
c = cube()
c.render_polyface(msp)
basic.draw_entities(msp)
result = basic.out.collector
assert len(result) == 24
entities = {e[0] for e in result}
assert entities == {'line'}
def test_polyface_virtual_entities(msp):
from ezdxf.render.forms import cube
polyface = cube().render_polyface(msp)
result = list(polyface.virtual_entities())
assert len(result) == 6
assert result[0].dxftype() == '3DFACE'
vertices = set()
for face in result:
for vertex in face:
vertices.add(vertex)
assert len(vertices) == 8
assert (-0.5, -0.5, -0.5) in vertices
assert (0.5, 0.5, 0.5) in vertices
def test_mesh_to_code():
from ezdxf.entities.mesh import Mesh
from ezdxf.render.forms import cube
entity = Mesh.new(handle='ABBA', owner='0', dxfattribs={
'color': '7',
})
c = cube()
entity.vertices = c.vertices
entity.edges = c.edges
entity.faces = c.faces
assert len(entity.vertices) == 8
new_entity = translate_to_code_and_execute(entity)
assert list(entity.vertices) == list(new_entity.vertices)
assert list(entity.faces) == list(new_entity.faces)
def test_poly_face_mesh_to_primitive():
from ezdxf.layouts import VirtualLayout
from ezdxf.render.forms import cube
vl = VirtualLayout()
poly_face_mesh = cube().render_polyface(vl)
assert poly_face_mesh.dxftype() == "POLYLINE"
p = disassemble.make_primitive(poly_face_mesh)
assert p.is_empty is False
assert p.path is None
mesh_builder = p.mesh
assert mesh_builder is not None
assert len(mesh_builder.vertices) == 8
assert len(mesh_builder.faces) == 6
assert len(list(p.vertices())) == 8
def test_mesh_entity_to_primitive():
from ezdxf.layouts import VirtualLayout
from ezdxf.render.forms import cube
vl = VirtualLayout()
mesh_entity = cube().render(vl)
assert mesh_entity.dxftype() == "MESH"
p = disassemble.make_primitive(mesh_entity)
assert p.is_empty is False
assert p.path is None
mesh_builder = p.mesh
assert mesh_builder is not None
assert p.is_empty is False
assert len(mesh_builder.vertices) == 8
assert len(mesh_builder.faces) == 6
assert len(list(p.vertices())) == 8
def test_mesh_to_code():
from ezdxf.entities.mesh import Mesh
from ezdxf.render.forms import cube
entity = Mesh.new(
handle="ABBA",
owner="0",
dxfattribs={
"color": "7",
},
)
c = cube()
entity.vertices = c.vertices
entity.faces = c.faces
assert len(entity.vertices) == 8
new_entity = translate_to_code_and_execute(entity)
assert list(entity.vertices) == list(new_entity.vertices)
assert list(entity.faces) == list(new_entity.faces)
def _add_mesh(layout: "GenericLayoutType", item: Item, layer: str, color: int,
m: Matrix44):
from ezdxf.render.forms import cube
attribs = {
"layer": layer,
"color": color,
}
mesh = cube(center=False)
sx, sy, sz = item.get_dimension()
mesh.scale(sx, sy, sz)
x, y, z = item.position
mesh.translate(x, y, z)
mesh.render_polyface(layout, attribs, matrix=m)
text = layout.add_text(str(item.payload),
height=0.25,
dxfattribs={"layer": "TEXT"})
if sy > sx:
text.dxf.rotation = 90
align = TextEntityAlignment.TOP_LEFT
else:
align = TextEntityAlignment.BOTTOM_LEFT
text.set_placement((x + 0.25, y + 0.25, z + sz), align=align)
text.transform(m)
import ezdxf
from ezdxf.render.forms import sphere, cube
from ezdxf.addons.pycsg import CSG
DIR = Path('~/Desktop/Outbox').expanduser()
NLENGTH = .05
doc = ezdxf.new()
doc.layers.new('csg', dxfattribs={'color': 1})
doc.layers.new('normals', dxfattribs={'color': 6})
doc.set_modelspace_vport(6, center=(5, 0))
msp = doc.modelspace()
cube1 = cube().translate(-.5, -.5, -.5)
sphere1 = sphere(count=32, stacks=16, radius=.5, quads=True)
union = (CSG(cube1) + CSG(sphere1)).mesh()
union.render_mesh(msp, dxfattribs={'layer': 'csg', 'color': 1})
union.render_normals(msp, length=NLENGTH, relative=False, dxfattribs={'layer': 'normals'})
subtract = (CSG(cube1) - CSG(sphere1)).mesh().translate(2.5)
subtract.render_mesh(msp, dxfattribs={'layer': 'csg', 'color': 3})
subtract.render_normals(msp, length=NLENGTH, relative=False, dxfattribs={'layer': 'normals'})
intersection = (CSG(cube1) * CSG(sphere1)).mesh().translate(4)
intersection.render(msp, dxfattribs={'layer': 'csg', 'color': 5})
intersection.render_normals(msp, length=NLENGTH, relative=False, dxfattribs={'layer': 'normals'})
doc.saveas(DIR / 'csg_sphere.dxf')
import ezdxf
from ezdxf.render.forms import sphere, cube
from ezdxf.addons.pycsg import CSG
DIR = Path("~/Desktop/Outbox").expanduser()
NLENGTH = 0.05
doc = ezdxf.new()
doc.layers.new("csg", dxfattribs={"color": 1})
doc.layers.new("normals", dxfattribs={"color": 6})
doc.set_modelspace_vport(6, center=(5, 0))
msp = doc.modelspace()
cube1 = cube().translate(-0.5, -0.5, -0.5)
sphere1 = sphere(count=32, stacks=16, radius=0.5, quads=True)
union = (CSG(cube1) + CSG(sphere1)).mesh()
union.render_mesh(msp, dxfattribs={"layer": "csg", "color": 1})
union.render_normals(msp,
length=NLENGTH,
relative=False,
dxfattribs={"layer": "normals"})
subtract = (CSG(cube1) - CSG(sphere1)).mesh().translate(2.5)
subtract.render_mesh(msp, dxfattribs={"layer": "csg", "color": 3})
subtract.render_normals(msp,
length=NLENGTH,
relative=False,
dxfattribs={"layer": "normals"})
# Copyright (c) 2020, Manfred Moitzi
# License: MIT License
from pathlib import Path
import ezdxf
from ezdxf.render.forms import cube, cylinder
DIR = Path('~/Desktop/Outbox').expanduser()
mycube = cube().scale_uniform(10).subdivide(2)
mycylinder = cylinder(12, radius=5, top_center=(0, 0, 10)).translate(0, 20)
doc = ezdxf.new()
msp = doc.modelspace()
mycube.render(msp, dxfattribs={'color': 1})
mycube.translate(20)
mycube.render_polyface(msp, dxfattribs={'color': 3})
mycube.translate(20)
mycube.render_3dfaces(msp, dxfattribs={'color': 5})
mycylinder.render(msp, dxfattribs={'color': 1})
mycylinder.translate(20)
mycylinder.render_polyface(msp, dxfattribs={'color': 3})
mycylinder.translate(20)
mycylinder.render_3dfaces(msp, dxfattribs={'color': 5})
doc.set_modelspace_vport(30, center=(30, 20))
doc.saveas(DIR / 'meshes.dxf')
def test_spherical_envelope():
from ezdxf.render.forms import cube
center, radius = spherical_envelope(cube(center=True).vertices)
assert center.isclose((0, 0, 0))
assert radius == pytest.approx(0.8660254037844386)
def make_cluster(size, dx, dy, dz):
return forms.cube().scale_uniform(size).translate(dx, dy, dz).vertices
# Copyright (c) 2020-2022, Manfred Moitzi
# License: MIT License
from pathlib import Path
import ezdxf
from ezdxf import colors
from ezdxf.gfxattribs import GfxAttribs
from ezdxf.render import forms
DIR = Path("~/Desktop/Outbox").expanduser()
cube = forms.cube().scale_uniform(10).subdivide(2)
cylinder = forms.cylinder(12, radius=5, top_center=(0, 0, 10)).translate(0, 20)
doc = ezdxf.new()
msp = doc.modelspace()
red = GfxAttribs(color=colors.RED)
green = GfxAttribs(color=colors.GREEN)
blue = GfxAttribs(color=colors.BLUE)
cube.render(msp, dxfattribs=red)
cube.translate(20)
cube.render_polyface(msp, dxfattribs=green)
cube.translate(20)
cube.render_3dfaces(msp, dxfattribs=blue)
cylinder.render(msp, dxfattribs=red)
cylinder.translate(20)
cylinder.render_polyface(msp, dxfattribs=green)
cylinder.translate(20)
cylinder.render_3dfaces(msp, dxfattribs=blue)
def test_scale_mesh():
mesh = cube(center=False)
mesh.scale(2, 3, 4)
bbox = BoundingBox(mesh.vertices)
assert bbox.extmin.isclose((0, 0, 0))
assert bbox.extmax.isclose((2, 3, 4))
def cube_polyface():
layout = VirtualLayout()
p = layout.add_polyface()
p.append_faces(cube().faces_as_vertices())
return p
def cube_polyface(msp):
p = msp.add_polyface()
p.append_faces(cube().faces_as_vertices())
return p
def test_mesh_subdivide():
c = cube().scale_uniform(10).subdivide(2)
assert len(c.vertices) == 2 * 25 + 3 * 16
assert len(c.faces) == 16 * 6
def test_cube_union():
a = cube()
b = cube().translate(0.5, 0.5)
c = CSG(mesh=a) + CSG(mesh=b)
def test_cube_intersect():
a = cube()
b = cube().translate(0.5, 0.5)
c = CSG(mesh=a) * CSG(mesh=b)
def test_cube_subtract():
a = cube()
b = cube().translate(0.5, 0.5)
_ = CSG(a) - CSG(b)
def test_rotate_x():
mesh = cube(center=False)
mesh.rotate_x(radians(90))
bbox = BoundingBox(mesh.vertices)
assert bbox.extmin.isclose((0, -1, 0))
assert bbox.extmax.isclose((1, 0, 1))
# Copyright (c) 2020, Manfred Moitzi
# License: MIT License
from pathlib import Path
import ezdxf
from ezdxf.addons.pycsg import CSG
from ezdxf.render.forms import cube, cylinder_2p
DIR = Path("~/Desktop/Outbox").expanduser()
cube1 = cube()
cylinder1 = cylinder_2p(count=32,
base_center=(0, -1, 0),
top_center=(0, 1, 0),
radius=0.25)
doc = ezdxf.new()
doc.set_modelspace_vport(6, center=(5, 0))
msp = doc.modelspace()
# build solid union
union = CSG(cube1) + CSG(cylinder1)
# convert to mesh and render mesh to modelspace
union.mesh().render_mesh(msp, dxfattribs={"color": 1})
# build solid difference
difference = CSG(cube1) - CSG(cylinder1)
# convert to mesh, translate mesh and render mesh to modelspace
difference.mesh().translate(1.5).render(msp, dxfattribs={"color": 3})
# build solid intersection
intersection = CSG(cube1) * CSG(cylinder1)