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Modeling: Revolving a sketch#
This example shows how to use the revolve_sketch()
method to revolve a sketch around an axis to create a 3D body. You can also specify the angle of revolution to create a partial body.
[1]:
# Imports
from ansys.geometry.core import Modeler
from ansys.geometry.core.math import (
Plane,
Point2D,
Point3D,
UNITVECTOR3D_X,
UNITVECTOR3D_Z,
)
from ansys.geometry.core.misc import UNITS, Angle
from ansys.geometry.core.sketch import Sketch
[2]:
# Initialize the modeler for this example notebook
m = Modeler()
Example: Creating a quarter of a donut#
The following code snippets show how to use the revolve_sketch()
function to create a quarter of a 3D donut. The process involves defining a quarter of a circle as a profile and then revolving it around the Z-axis to create a 3D body.
Initialize the sketch design#
Create a design sketch named quarter-donut
.
[3]:
# Initialize the donut sketch design
design = m.create_design("quarter-donut")
Define circle parameters#
Set path_radius
, which represents the radius of the circular path that the profile circle sweeps along, to 5
units. Set profile_radius
, which represents the radius of the profile circle that sweeps along the path to create the donut body, to 2
units.
[4]:
# Donut parameters
path_radius = 5
profile_radius = 2
Create the profile circle#
Create a circle on the XZ plane centered at the coordinates (5, 0, 0)
and useprofile_radius
to define the radius. This circle serves as the profile or cross-sectional shape of the donut.
[5]:
# Create the circular profile on the XZ-plane centered at (5, 0, 0)
# with a radius of 2
plane_profile = Plane(
origin=Point3D([path_radius, 0, 0]),
direction_x=UNITVECTOR3D_X,
direction_y=UNITVECTOR3D_Z,
)
profile = Sketch(plane=plane_profile)
profile.circle(Point2D([0, 0]), profile_radius)
profile.plot()
Perform the revolve operation#
Revolve the profile circle around the Z axis to create a quarter of a donut body. Set the angle of revolution to 90 degrees in the default direction, which is counterclockwise.
[6]:
# Revolve the profile around the Z axis and center in the absolute origin
# for an angle of 90 degrees
design.revolve_sketch(
"quarter-donut-body",
sketch=profile,
axis=UNITVECTOR3D_Z,
angle=Angle(90, unit=UNITS.degrees),
rotation_origin=Point3D([0, 0, 0]),
)
design.plot()
Perform a revolve operation with a negative angle of revolution#
You can use a negative angle of revolution to create a quarter of a donut in the opposite direction. The following code snippet shows how to create a quarter of a donut in the clockwise direction. The same profile circle is used, but the angle of revolution is set to -90 degrees.
[7]:
# Initialize the donut sketch design
design = m.create_design("quarter-donut-negative")
# Revolve the profile around the Z axis and center in the absolute origin
# for an angle of -90 degrees (clockwise)
design.revolve_sketch(
"quarter-donut-body-negative",
sketch=profile,
axis=UNITVECTOR3D_Z,
angle=Angle(-90, unit=UNITS.degrees),
rotation_origin=Point3D([0, 0, 0]),
)
design.plot()
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Download this example as a Jupyter Notebook or as a Python script.