설계제도 작업대

This page is a translated version of the page Draft Workbench and the translation is 4% complete.

소개

설계제도 작업대 는 대상물을 프리캐드에서 2D로 생성하고 수정하는 것에 중점을 두었습니다. 그러나 대상물이 일반 좌표계의 XY면에서만 존재하는 구속조건이 아닙니다. 대상물의 3D 공간에서 방향이나 위치를 임의로 정할 수 있고, 설계용 물체는 평면 형식, 비 평면 형식 둘 다 됩니다.

Draft objects can be used for general drafting, similar to what can be done with Inkscape or AutoCAD. But they can also form the base for the creation of 3D objects in other workbenches. A Draft Wire may define the path of an Arch Wall, a Draft Polygon can be extruded with Part Extrude, etc. Many of the Draft modifier tools can be applied to 2D and 3D objects created with other workbenches as well. You can, for example, move a Sketch or create a Draft OrthoArray from a Part object.

The Draft Workbench also provides tools to define a working plane, a grid, and a snapping system to precisely control the position of geometry.

If your primary goal is the production of complex 2D drawings and DXF files, and you don't need 3D modelling, FreeCAD may not be the right choice for you. You may wish to consider a dedicated software program for technical drafting instead, such as LibreCAD or QCad.

The image shows the grid aligned with the XY plane.
On the left, in white, several planar objects.
On the right a non-planar Draft Wire used as the Path Object of a Draft PathArray.

Drafting

• Line: creates a straight line.
• Polyline: creates a polyline (also called wire), a sequence of several connected line segments.
• Fillet: creates a fillet, a rounded corner, or a chamfer, a straight edge, between two Draft Lines.
• Arc tools:
• Arc: creates a circular arc from a center, a radius, a start angle and an aperture angle.
• Arc by 3 points: creates a circular arc from three points that define its circumference.
• Circle: creates a circle from a center and a radius.
• Ellipse: creates an ellipse from two points defining a rectangle in which the ellipse will fit.
• Rectangle: creates a rectangle from two points.
• Polygon: creates a regular polygon from a center and a radius.
• B-spline: creates a B-spline curve from several points.
• Bézier tools:
• Point: creates a simple point.
• Facebinder: creates a surface object from selected faces.

Annotation

• Text: creates a multi-line text at a given point.
• Dimension: creates a linear dimension, a radial dimension or an angular dimension.
• Label: creates a multi-line text with a 2-segment leader line and an arrow.
• Annotation styles...: allows you to define styles that affect the visual properties of annotation-like objects.

Modification

• Move: moves or copies selected objects from one point to another.
• Rotate: rotates or copies selected objects around a center point by a given angle.
• Scale: scales or copies selected objects around a base point.
• Mirror: creates mirrored copies from selected objects.
• Offset: offsets each segment of a selected object over a given distance, or creates an offset copy of the selected object.
• Trimex: trims or extends a selected object.
• Stretch: stretches objects by moving selected points.
• Clone: creates linked copies, clones, of selected objects.
• Array tools:
• Array: creates an orthogonal array from a selected object. It can optionally create a Link array.
• Polar array: creates an array from a selected object by placing copies along a circumference. It can optionally create a Link array.
• Circular array: creates an array from a selected object by placing copies along concentric circumferences. It can optionally create a Link array.
• Path array: creates an array from a selected object by placing copies along a path.
• Point array: creates an array from a selected object by placing copies at the points from a point compound.
• Edit: puts selected objects in Draft Edit mode. In this mode the properties of objects can be edited graphically.
• Subelement highlight: temporarily highlights selected objects, or the base objects of selected objects.

Draft Tray

The Draft Tray allows selecting the working plane, defining style settings, toggling construction mode, and specifying the active layer or group.

• Select plane: defines the current Draft working plane. Also available in the menu: Draft → Utilities → Select Plane.
• Set style: sets the default style for new objects. Also available in the menu: Draft → Utilities → Set style.
• Toggle construction mode: switches Draft construction mode on or off. Also available in the menu: Draft → Utilities → Toggle construction mode.

Draft annotation scale widget

With the Draft annotation scale widget the Draft annotation scale can be specified.

Draft snap widget

The Draft snap widget can be used as an alternative for the Draft snap toolbar.

Draft snap toolbar

The Draft snap toolbar allows selecting the active snap options. The buttons belonging to active options stay depressed. For general information about snapping see: Draft Snap.

• Snap lock: enables or disables snapping globally.
• Snap angle: snaps to the special cardinal points on circular edges, at multiples of 30° and 45°.
• Snap extension: snaps to an imaginary line that extends beyond the endpoints of straight edges.
• Snap parallel: snaps to an imaginary line parallel to straight edges.
• Snap special: snaps to special points defined by the object.
• Snap near: snaps to the nearest point on faces and edges.
• Snap ortho: snaps to imaginary lines that cross the previous point at multiples of 45°.
• Snap grid: snaps to the intersections of grid lines.

Draft utility tools toolbar

• Toggle normal/wireframe display: switches the 보기Display Mode property of selected objects between `Flat Lines` and `Wireframe`.

The Draft → Utilities menu contains several tools. Most of them can also be accessed from toolbars or the Draft Tray and have already been mentioned above. For the following tools this is not the case:

• Heal: heals problematic Draft objects found in very old files.

• Working plane: the plane in the 3D view where new Draft objects are created.
• Snapping: select exact geometric points on, or defined by, existing objects or the grid.
• Constraining: for each subsequent point you can constrain the movement of the cursor to the X, Y, or Z direction.
• Construction mode: places new Draft objects in a dedicated group making it easier to hide or delete them.
• Pattern: Draft objects with a 데이터Make Face property can display an SVG pattern instead of a solid face color.

The following additional options are available in the Tree view context menu:

Default options

For most Draft objects the following option is available:

• Utilities: a subset of the tools available in the main Draft Utilities menu.

Layer container options

For a Draft LayerContainer these additional options are available:

Layer options

For a Draft Layer these additional options are available:

Text options

For a Draft Text and a Draft Label that contains one or more hyperlinks, to a local or remote file or an URL, this additional option is available:

• Open hyperlinks: the hyperlinks are opened in the appropriate application (as defined by the OS). There is a warning in the case of multiple hyperlinks. introduced in version 1.0

Wire options

For a Draft Line and a Draft Wire this additional option is available:

• Flatten: flattens the wire on the current Draft working plane. This option does not work properly in version 0.19 and below.

Working plane proxy options

For a Draft WorkingPlaneProxy these additional options are available:

• Write objects state: updates the 보기Visibility Map property of the working plane proxy with the current visibility state of objects in the document.

The following additional options are available in the 3D view context menu:

Default options

• Utilities: a subset of the tools available in the main Draft Utilities menu.

See above.

Obsolete tools

• Array: creates an orthogonal array from a selected object. The created array can be turned into a polar array or a circular array by changing its 데이터Array Type property. Not available in version 0.21 and above.
• Drawing: inserts views of selected objects into a drawing page. Not available in version 0.21 and above.

Preferences

• Preferences: general preferences for the Draft Workbench.

File formats

The Draft Workbench provides FreeCAD with importers and exporters for several file formats. These are used by the Std Import and Std Export commands.

Unit tests

To run the unit tests of the workbench execute the following from the operating system terminal:

```freecad -t TestDraft
```

Scripting

The workbench includes a module to create samples of all objects in a new document.

Use this to test that all objects are produced correctly:

```import drafttests.draft_test_objects as dto
doc = dto.create_test_file()
```

Inspecting the code of this module can help to understand the programming interface.