Part: Crea primitive
Crea primitive |
Posizione nel menu |
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Parte → Crea primitive... |
Ambiente |
Parte, OpenSCAD |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Crea forma |
Descrizione
È uno strumento per creare diverse geometrie primitive parametriche. È presente negli ambienti Parte e OpenSCAD
Primitive shapes that can be created with the Part Workbench.
Attualmente lo strumento crea:
- Piano
- Cubo (prisma a base rettangolare)
- Cilindro
- Cono
- Sfera
- Ellissoide
- Toro
- Prisma disponibile dalla versione 0.14
- Cuneo
- Elica
- Spirale disponibile dalla versione 0.14
- Cerchio
- Ellisse
- Linea (Bordo)
- Punto (Vertice)
- Poligono regolare disponibile dalla versione 0.14
Some of the available (parametric) geometric primitives that are possible:
- Plane: inserts a simple parametric plane 10 x 10 mm, with the parameters of position, length, and width.
- Box/Cube: inserts a parametric, rectangular cuboid, geometric primitive into the active document.
- Cylinder: Inserts a simple parametric cylinder, with position, angle, radius and height parameters in to he active document.
- Cone: Inserts a parametric truncated Cone in to the active document.
- Sphere: Inserts a parametric sphere, with position, angle1, angle2, angle3 and radius parameters.
- Ellipsoid: Inserts a parametric Ellipsoid solid in to the active document.
- Torus: Inserts a simple parametric torus, with position, angle1, angle2, angle3, radius1 and radius2 as parameters in to the active document.
- Prism: Inserts a solid defined by a regular polygon cross section and a height in to the active document. introduced in version 0.14
- Wedge: Inserts a parametric Wedge object in to the active document.
- Helix: Inserts a Helix geometric primitive in to the active document. Common usage for Helix is creating threads.
- Spiral: Inserts a Spiral geometric primitive in to the active workbench. introduced in version 0.14
- Circle: Inserts a circular curved edge in to the active document.
- Ellipse: Inserts an elliptical curved edge in to the active document.
- Point (Vertex): Inserts a Point (vertex) geometric primitive in to the active document.
- Line (Edge): creates a simple line segment delimited by two vertices.
- Regular Polygon: Inserts a RegularPolygon geometric primitive in to the active document. introduced in version 0.14
Inheritance
All part primitives are objects which derive from the Part::Primitive
class. This class in turn derives from the basic Part Feature object (Part::Feature
class).
Simplified diagram of the relationships between the core objects in the program. The Part::Primitive
class is derived from the Part::Feature
object. It includes an extension that allows it to be attached to faces and planes.
Scripting
See also: Part scripting
Test the creation of the primitives with a script. introduced in version 0.19
This can be run from the Python console.
import parttests.part_test_objects as pto
pto.create_test_file("example_file")
This script is located in the installation directory of the program, and can be examined to see how the basic primitives are built.
$INSTALL_DIR/Mod/Part/parttests/part_test_objects.py
It can be used as input to the program as well.
freecad $INSTALL_DIR/Mod/Part/parttests/part_test_objects.py
- Primitives: Box, Cylinder, Sphere, Cone, Torus, Tube, Create primitives, Shape builder
- Creation and modification: Extrude, Revolve, Mirror, Scale, Fillet, Chamfer, Make face from wires, Ruled Surface, Loft, Sweep, Section, Cross sections, 3D Offset, 2D Offset, Thickness, Projection on surface, Attachment
- Boolean: Make compound, Explode Compound, Compound Filter, Boolean, Cut, Fuse, Common, Connect, Embed, Cutout, Boolean fragments, Slice apart, Slice, XOR
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