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Modeling: Tessellation of two bodies#

This example shows how to create two stacked bodies and return the tessellation as two merged bodies.

Perform required imports#

Perform the required imports.

[1]:

from pint import Quantity

from ansys.geometry.core import Modeler
from ansys.geometry.core.math import Point2D, Point3D, Plane
from ansys.geometry.core.misc import UNITS
from ansys.geometry.core.plotting import Plotter
from ansys.geometry.core.sketch import Sketch

Create design#

Create the basic sketches to be tessellated and extrude the sketch in the required plane. For more information on creating a component and extruding a sketch in the design, see the Rectangular plate with multiple bodies example.

Here is a typical situation in which two bodies, with different sketch planes, merge each body into a single dataset. This effectively combines all the faces of each individual body into a single dataset without separating faces.

[2]:

modeler = Modeler()

sketch_1 = Sketch()
box = sketch_1.box(
    Point2D([10, 10], unit=UNITS.m), width=Quantity(10, UNITS.m), height=Quantity(5, UNITS.m)
)
circle = sketch_1.circle(
    Point2D([0, 0], unit=UNITS.m), radius=Quantity(25, UNITS.m)
)

design = modeler.create_design("TessellationDesign")
comp = design.add_component("TessellationComponent")
body = comp.extrude_sketch("Body", sketch=sketch_1, distance=10 * UNITS.m)

# Create the second body in a plane with a different origin
sketch_2 = Sketch(Plane([0, 0, 10]))
box = sketch_2.box(Point2D(
    [10, 10], unit=UNITS.m), width=Quantity(10, UNITS.m), height=Quantity(5, UNITS.m)
)
circle = sketch_2.circle(
    Point2D([0, 10], unit=UNITS.m), radius=Quantity(25, UNITS.m)
)

body = comp.extrude_sketch("Body", sketch=sketch_2, distance=10 * UNITS.m)

Tessellate component as two merged bodies#

Tessellate the component and merge each body into a single dataset. This effectively combines all the faces of each individual body into a single dataset without separating faces.

[3]:

dataset = comp.tessellate(merge_bodies=True)
dataset

[3]:

Information

Blocks

MultiBlock	Values
N Blocks	1
X Bounds	-25.000, 25.000
Y Bounds	-24.999, 34.999
Z Bounds	0.000, 20.000

Index	Name	Type
0	Block-00	MultiBlock

If you want to tessellate the body and return the geometry as triangles, single body tessellation is possible. If you want to merge the individual faces of the tessellation, enable the merge option so that the body is rendered into a single mesh. This preserves the number of triangles and only merges the topology.

Code without merging the body

[4]:

dataset = body.tessellate()
dataset

[4]:

Information

Blocks

MultiBlock	Values
N Blocks	7
X Bounds	-25.000, 25.000
Y Bounds	-14.999, 34.999
Z Bounds	10.000, 20.000

Index	Name	Type
0	Block-00	PolyData
1	Block-01	PolyData
2	Block-02	PolyData
3	Block-03	PolyData
4	Block-04	PolyData
5	Block-05	PolyData
6	Block-06	PolyData

Code with merging the body

[5]:

mesh = body.tessellate(merge=True)
mesh

[5]:

PolyData	Information
N Cells	1640
N Points	1650
N Strips	0
X Bounds	-2.500e+01, 2.500e+01
Y Bounds	-1.500e+01, 3.500e+01
Z Bounds	1.000e+01, 2.000e+01
N Arrays	0

Plot design#

Plot the design.

[6]:

design.plot()

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