Draft Module/bg

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Draft workbench icon

Introdução

A bancada Draft permite desenhar objetos 2D simples e oferece várias ferramentas para modificá-los posteriormente. Ele também fornece ferramentas para definir um plano de trabalho, uma grade e um sistema de encaixe para controlar com precisão a posição de sua geometria.

Os objetos 2D criados podem ser usados para desenho geral de maneira similar ao Inkscape ou Autocad. Essas formas 2D também podem ser usadas como componentes básicos de objetos 3D criados com outras bancadas de trabalho, por exemplo, Part e Bancada Arch. A conversão de objetos do Draft para Sketches também é possível, o que significa que as formas também podem ser usadas com a Bancada PartDesign para a criação de corpos sólidos.

FreeCAD is primarily a 3D modelling application, and thus its 2D tools aren't as advanced as in other drawing programs. If your primary goal is the production of complex 2D drawings and DXF files, and you don't need 3D modelling, you may wish to consider a dedicated software program for technical drafting such as LibreCAD, QCad, TurboCad, and others.

Draft Workbench Example

Drawing objects

These are tools for creating objects.

  • Line: draws a line segment between two points.
  • Polyline: draws a line made of multiple line segments (polyline).
  • Fillet: draws a fillet (rounded corner) or a chamfer (straight line) between two simple Lines. introduced in version 0.19
  • Arc: draws an arc segment from center, radius, start angle and end angle.
  • Arc 3Points: draws a circular arc segment from three points that are located in the circumference. introduced in version 0.19
  • Circle: draws a circle from center and radius.
  • Ellipse: draws an ellipse from two corner points.
  • Rectangle: draws a rectangle from two corner points.
  • Polygon: draws a regular polygon from center, radius, and number of sides.
  • BSpline: draws a B-Spline from a series of points.
  • Cubic Bezier Curve: draws a Bezier curve of third degree by dragging two points. introduced in version 0.19
  • Bezier Curve: draws a Bezier curve from a series of points.
  • Point: inserts a point object.
  • Facebinder: creates a new object from selected faces on existing objects.
  • ShapeString: inserts a compound shape representing a text string at a given point.

Annotation objects

Modifying objects

These are tools for modifying existing objects. They work on selected objects, but if no object is selected, you will be invited to select one.

Many operation tools (move, rotate, array, etc.) also work on solid objects (Part, PartDesign, Arch, etc.).

  • Shape 2D View: creates a 2D object which is a flattened 2D view of a 3D object.

Obsolete

This command is considered obsolete because the Drawing Workbench is obsolete. However, the command itself is still available.

These commands have been removed from the interface.

Draft Tray toolbar

The Draft tray toolbar appears when the workbench is started, and allows selecting the working plane, together with some visual properties like the line color, shape color, text size, line width, and automatic group.

Draft Snap toolbar

The Draft Snap toolbar allows selecting the currently snapping mode. Its button keep depressed when a mode is active.

Utility tools

Utility menu

Additional tools available from the menu Draft → Utilities, or via the right-click context menu, depending on the selected object.

Obsolete

These tools were removed from the interface in v0.19 because they no longer had any purpose.

Preferences

  • Preferences: general preferences for the working plane and the drawing tools.
  • Import-Export Preferences: preferences available for importing from and exporting to different file formats.

File formats

These are functions for opening, importing or exporting other file formats. Opening will open a new document with the contents of the file, while importing will append the contents of the file to the current document. Export will save the selected objects to a file. If nothing is selected, all objects will be exported. Be aware that the purpose of the Draft Module is to work with 2D objects, so those import routines focus only on 2D objects, and although DXF and OCA formats also support object definitions in 3D space (objects are not necessarily flat), they will not import volumetric objects such as meshes, 3D surfaces, etc., but rather lines, circles, texts or flat shapes. Currently supported file formats are: The Draft module provides FreeCAD with importers and exporters for the following file formats:

Install importers

Additional features

  • Coordinates: enter coordinates instead of clicking on the 3D view to define a new point.
  • Constraining: limit the pointer to horizontal or vertical movements relative to a previous point.
  • Snapping: place new points on special places on existing objects or on the grid.
  • Copy Mode: All modification tools can either modify the selected objects or create a modified copy of them. Pressing and holding Alt while the object is being modified, e.g. moved or rotated, creates a copy when the key is released.
  • Construction Mode: Allows you to create geometries separate from the rest by simply switching them on and off.
  • Working plane: allows you to select a surface on which to build your shapes.

Unit tests

See also: Test Workbench.

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

freecad -t TestDraft

Scripting

The Draft tools can be used in macros and from the Python console by using the Draft API.

The workbench includes a module to create samples of all objects in a new document. introduced in version 0.19

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 is useful to understand how to use the programming interface.

$INSTALLDIR/Mod/Draft/drafttests/draft_test_objects.py

Where $INSTALLDIR is the toplevel directory where the software was installed; for example, in Linux it may be /usr/share/freecad.

Test objects for the Draft Workbench.

Tutorials