|
Menu location |
---|
Nenhum |
Workbenches |
Todas |
Default shortcut |
None |
Introduced in version |
0.17 |
See also |
Grupo Std, Corpo PartDesign |
Parte Std (também chamada internamente de Parte App) é um contêiner usado para organizar e agrupar objetos. Ele permite que esses objetos sejam movimentados juntos como uma única unidade na vista 3D.
O elemento **Parte Std** foi desenvolvido como um bloco básico para criar montagens mecânicas. Ele é especialmente útil para organizar objetos que possuem uma Forma Topológica (TopoShape) de Parte, como Primitivas de Parte, Corpos PartDesign e outras Funcionalidades de Parte.
A **Parte Std** inclui um Objeto de Origem com eixos locais X, Y e Z, além de planos padrão, que podem ser usados como referência para posicionar os objetos contidos. Além disso, é possível aninhar **Partes Std** dentro de outras **Partes Std**, permitindo criar uma montagem maior a partir de submontagens menores.
Embora seja principalmente destinado a corpos sólidos, a **Parte Std** pode ser usada para gerenciar qualquer objeto que possua a propriedade de Posicionamento. Isso significa que ela também pode conter Elementos de Malha, Esboços e outros objetos derivados da classe App GeoFeature.
Não confunda o Corpo PartDesign com o
Parte Std.
O primeiro é um objeto específico usado na Bancada PartDesign, destinado a modelar um sólido único e contínuo por meio de Recursos PartDesign. Por outro lado, a **Parte Std** não é utilizada para modelagem, mas sim para organizar diferentes objetos no espaço, com o objetivo de criar montagens.
A ferramenta Parte Std não é definida por uma bancada específica, mas sim pelo sistema base, portanto, ela está disponível na barra de ferramentas de estrutura, que pode ser encontrada em todas as bancadas de trabalho.
Para agrupar objetos de forma arbitrária, sem considerar sua posição, use Grupo Std; este objeto não afeta o posicionamento dos elementos que contém, sendo essencialmente apenas uma pasta usada para manter a Vista em Árvore organizada.
Esquerda: elementos dentro de uma Parte Std na Vista em Árvore. Direita: objetos posicionados no espaço, referenciados à Origem da Parte Std.
The Std Part, internally called App Part (App::Part
class), is derived from the App GeoFeature (App::GeoFeature
class) and inherits all its properties. It also has several additional properties. Notably properties that help it manage information in the context of an assembly, for example, DadosType, DadosId, DadosLicense, DadosLicenseURL and DadosGroup.
These are the properties available in the property editor. Hidden properties can be shown by using the Show all command in the context menu of the property editor.
Base
String
): a description for this object. By default, it is an empty string ""
.Link
): the material for this object.Map
): map with additional meta information. By default, it is empty {}
.String
): an identification or part number for this object. By default, it is an empty string ""
.UUID
): the universally unique identifier (UUID) (128-bit number) of the object. This is assigned at creation time.String
): a field to specify the license for this object. By default, it is an empty string ""
.String
): a field to specify the web address to the license or contract for this object. By default, it is an empty string ""
.Color
): a tuple of four floating point RGBA values (r,g,b,a)
to define the color of the object; by default it is (1.0, 1.0, 1.0, 1.0)
, which is displayed as [255,255,255]
on base 255, white color.Placement
): the position of the object in the 3D view. The placement is defined by a Base
point (vector), and a Rotation
(axis and angle). See Placement.
0°
(zero degrees).0
and 1
. If any value is above 1
, the vector is normalized so that the magnitude of the vector is 1
. By default, it is the positive Z axis, (0, 0, 1)
.(0, 0, 0)
.String
): the user editable name of this object, it is an arbitrary UTF8 string.String
): a longer, user editable description of this object, it is an arbitrary UTF8 string that may include newlines. By default, it is an empty string ""
.ExpressionEngine
): a list of expressions. By default, it is empty []
.Bool
): whether to display the object or not.Link
): the App Origin object that is the positional reference for all elements listed in DadosGroup.LinkList
): a list of referenced objects. By default, it is empty []
.Bool
): whether the group is touched or not.Display Options
Enumeration
): Group
.Bool
): if it is true
, the object appears in the Tree view. Otherwise, it is set as invisible.Bool
): if it is true
, the object appears in the 3D view; otherwise it is invisible. By default this property can be toggled on and off by pressing the Space bar in the keyboard.Selection
Enumeration
): Disabled
(default), Enabled
, Object
, Element
.Enumeration
): Shape
(default), BoundBox
. If the option is Shape
, the entire shape (vertices, edges, and faces) will be highlighted in the 3D view; if it is BoundBox
only the bounding box will be highlighted.An open document can contain multiple Parts. But only one Part can be active. The active Part is displayed in the tree view with the background color specified by the Active container value in the preferences editor (by default, light blue). It will also be shown with bold text.
To activate or de-activate a Part:
Document with two Std Parts, of which the second one is active.
The Origin consists of the three standard axes (X, Y, Z) and three standard planes (XY, XZ and YZ). Sketches and other objects can be attached to these elements when creating them.
Left: Part Origin in the Tree view. Right: representation of the Origin elements in the 3D view.
Note: the Origin is an App Origin object (App::Origin
class), while the axes and planes are objects of type App::Line
and App::Plane
respectively. Each of these elements can be hidden and unhidden individually with the Space bar; this is useful to choose the correct reference when creating other objects.
Note 2: all elements inside the Part are referenced to the Part's Origin which means that the Part can be moved and rotated in reference to the global coordinate system without affecting the placement of the elements inside.
The Part's visibility supersedes the visibility of any object it contains. If the Part is hidden, the objects it contains will be hidden as well, even if their individual VistaVisibility property is set to true
. If the Part is visible, then each object's VistaVisibility determines whether the object is shown or not.
The visibility of the Std Part determines whether the objects grouped under it are shown in the 3D view or not. Left: the Part is hidden, so none of the objects will be shown in the 3D view. Right: the Part is visible, so each object controls its own visibility.
See also: FreeCAD Scripting Basics and scripted objects.
See Part Feature for the general information on adding objects to the document.
A Std Part (App Part) is created with the addObject()
method of the document. Once a Part exists, other objects can be added to it with the addObject()
or addObjects()
methods.
import FreeCAD as App
doc = App.newDocument()
part = App.ActiveDocument.addObject("App::Part", "Part")
obj1 = App.ActiveDocument.addObject("PartDesign::Body", "Body")
obj2 = App.ActiveDocument.addObject("Part::Box", "Box")
part.addObjects([obj1, obj2])
App.ActiveDocument.recompute()
You cannot create a scripted App::Part
. However, you can add App::Part
behavior to a scripted Part::FeaturePython
object by using the following code:
class MyGroup(object):
def __init__(self, obj=None):
self.Object = obj
if obj:
self.attach(obj)
def dumps(self):
return
def loads(self, _state):
return
def attach(self, obj):
obj.addExtension("App::OriginGroupExtensionPython")
obj.Origin = FreeCAD.ActiveDocument.addObject("App::Origin", "Origin")
def onDocumentRestored(self, obj):
self.Object = obj
class ViewProviderMyGroup(object):
def __init__(self, vobj=None):
if vobj:
vobj.Proxy = self
self.attach(vobj)
else:
self.ViewObject = None
def attach(self, vobj):
vobj.addExtension("Gui::ViewProviderOriginGroupExtensionPython")
self.ViewObject = vobj
def dumps(self):
return None
def loads(self, _state):
return None
App.ActiveDocument.addObject("Part::FeaturePython",
"Group",
MyGroup(),
ViewProviderMyGroup(),
True)