Part Extrude/ru

Описание
Функция Выдавить вытягивает форму(профиль) на указанное расстояние в указанном направлении. Тип конечной формы вывода варьируется в зависимости от типа формы ввода и выбранных параметров.

В наиболее распространенных случаях, ниже перечислены ожидаемые типы выходных фигур из заданного входного типа фигур.
 * Выдавите вершину (точку), создаст прямое Ребро (Линию)
 * Выдавливание открытого Ребра (например линии, дуги) создаст открытую грань (например плоскость)
 * Выдавить замкнутое ребро (например, круг), при необходимости будет получена замкнутая грань (например, цилиндр с открытыми торцами), или если параметр 'solid' равен 'true', будет получено твёрдое тело (например, замкнутый твердотельный цилиндр)
 * Выдавите открытую ломанную(например, Draft Ломаная линия), чтобы получить открытую оболочку (несколько соединённых граней)
 * Выдавите замкнутую ломанную(например, Draft Ломаная линия), при необходимости создайте оболочку (несколько соединенных граней), или, если параметр «solid» равен «true», создаст твёрдое тело
 * Выдавите грань (например, плоскость), чтобы получить твёрдое тело (например, Прямоугольный параллелепипед)
 * Выдавите, чтобы получить соединение твёрдых тел (строка состоит из букв, каждая буква будет твёрдым телом)
 * Выдавите оболочку из граней, получится Compsolid (Композитное твёрдое тело).

Usage

 * 1) Select the shape(s) in the 3D view or in the Model tree view
 * 2) Click on the  button in the toolbar, or go to the  menu
 * 3) Set the direction and length and optionally other parameters (see the following Parameters section for more details).
 * 4) Click.

Alternatively, the selection can be done after launching the tool, by selecting one or more shape from the list in the Tasks panel.

The Model tree will list as many Extrude objects as there were selected shapes. Each input shape is placed underneath its Extrude object.

Parameters
The Extrude shape is defined by the following parameters, which can be edited after its creation in the Data tab.


 * Base: the input shape (the shape upon which the Part Extrude was applied)


 * Dir: the direction to extend the shape. If Dir Mode is 'Custom', you can edit Dir. Otherwise, Dir is read-only, and computed from the linked shape.


 * Dir Link: parametric link to a edge (line) that sets the direction of extrusion. As of v0.17, this property is not supported by property editor.


 * Dir Mode: sets how Dir is controlled. 'Custom' means Dir is editable. 'Edge' means Dir is obtained from an edge (line) linked by Dir Link. 'Normal' means Dir is perpendicular to plane of the input shape.


 * Length Fwd: The distance to extrude by. If both Length Fwd and Length Rev are zero, the length of Dir vector is used.


 * Length Rev: Additional length to extrude against Dir.


 * Solid: if True, extruding a closed edge or a closed wire will yield a solid. If False, a shell will result.


 * Reversed: reverses the extrusion to go against Dir.


 * Symmetric: if True, extrusion is centered at the input shape, and total length is Length Fwd. Length Rev is ignored.


 * Taper Angle and Taper Angle Rev: applies an angle to the extrusion, so that sides of the extrusion are drafted by the specified angle. Positive angle means the cross-section expands. Taper Angle Rev sets the taper for the reversed part of the extrusion (the part from Length Rev). As of v0.17, tapered extrusion is only supported for wires with no holes. Taper does not work well if the extruded shape contains B-splines.


 * Face Maker Class: sets C++ class name of face making code, which is used when making solids from wires. This property is here mainly for maintaining backward compatibility. Do not touch, unless you know what you are doing.


 * Placement: the standard placement parameters


 * Label: label to be shown in the Model tree view (not available on Extrude creation)

Task dialog



 * button creates the extrusion, and closes the dialog.


 * button closes dialog, without doing anything.


 * button creates the extrusion, but does not close the dialog. You can then select another shape in the list on the bottom, and create more extrusions. Clicking may times creates many extrusions.


 * 'Direction' radio buttons: set the way extrusion direction is computed.


 * button: click it, and then pick an edge in 3D view. That edge will appear in text field next to the button, in format "ObjectName:EdgeN". You can also type the link manually. Values X,Y,Z will be filled according to the edge direction.


 * ,, buttons: Click x button to set extrusion direction to +x axis. Click it again to set -x axis.


 * ,, input fields: set or display the direction vector of extrusion. If both lengths are zero, the length of this vector sets the length of extrusion, and values are always in mm, regardless of unit preferences.


 * Length fields: set length of extrusion. These input fields have unit support.


 * Symmetric: spreads out the extrusion into both directions, so that the profile remains in the middle.


 * Taper Outward Angle: positive angle means profile is expanded at other end of extrusion.


 * Create Solid checkbox: if checked, extruding a closed wire or edge will yield a solid. It is checked by default, if a closed wire was preselected before invoking Part Extrude.


 * Shape list: here you select, what shapes to extrude. If multiple objects are selected, multiple Extrude objects are created.

Comparison with PartDesign Pad
PartDesign Pad is also an extrusion feature, but there are important differences.

Part Extrude always creates a standalone shape. PartDesign Pad fuses the extrusion result to the rest of the Body.

Part Extrude doesn't care where it is in model tree. PartDesign Pad can only live inside a PartDesign Body.

Part Extrude can extrude any object that has Part Geometry (OCC shape), except for solids and compsolids. And it can't extrude individual faces of other objects. PartDesign Pad will only accept a Sketch as a profile (and a small selection of other object types), or a face of a solid.