底图首选项

This page is a translated version of the page Draft Preferences and the translation is 3% complete.

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Draft

底图工作台的首选项可以在首选项编辑器中找到，它位于Edit → Preferences → Draft菜单。

此处有4个选项卡：通用设置、网格与捕捉、可视化设置，以及文本与标注。

通用设置

On the General settings tab you can specify the following:

Name	Description
Default working plane	The initial working plane when the Draft Workbench is first loaded in a FreeCAD session. The options are: None: this is equivalent to the Automatic option of the Draft SelectPlane command. XY (Top) XZ (Front) YZ (Side)
Internal precision level	The number of decimals used in internal coordinate operations (for example 3 = 0.001). Values between 6 and 8 are usually considered the best trade-off. After changing this preference you must restart FreeCAD.
Tolerance	Some internal operations use a tolerance. Values with differences below this value will be treated as the same. This preference will be obsoleted soon, the Internal precision level mentioned above will then be used for the tolerance as well. After changing this preference you must restart FreeCAD.
Show groups in layers list drop-down button	If checked, the layers drop-down list will also show groups, allowing you to automatically add objects to groups as well. See Draft AutoGroup.
Set focus on Length instead of X coordinate	Set the focus on the Length input box, if available, instead of the X coordinate input box. This allows to specify a direction and a distance to define the next point.
Select base objects after copying	If checked, the base objects are reselected after copying objects.
Set the Support property when possible	If checked, when creating a Draft object on top of the selected face of an existing object, the 数据Support property of the Draft object will be set to that base object. This was standard behavior before FreeCAD version 0.19.
Fill objects with faces whenever possible	If checked, commands will start with filled mode switched on. If filled mode is on, the created objects will have 数据Make Face set to `true`. Changing the filled mode in a task panel will override this preference for the current FreeCAD session. After changing this preference you must restart FreeCAD.
Global copy mode	If checked, copy mode will be kept across commands. Otherwise commands will always start with copy mode switched off.
Use Part Primitives when available	If checked, Draft commands create Part primitives instead of Draft objects when possible. Note that not all Part primitives are fully editable with the Draft modifier commands.
Prefix labels of Clones with	The default prefix added to the labels of Draft clones.
Construction group name	The default name (FreeCAD version 0.19) or the default label (FreeCAD version 0.20) for the Draft construction group.
Construction geometry color	The default color for objects drawn while in construction mode.

User interface settings

On the User interface settings tab you can specify the following:

Name	Description
In-Command Shortcuts	These shortcuts only work when a Draft or Arch command is active. Note that not all commands support all shortcuts. After changing on or more of these shortcuts you must restart FreeCAD.
Relative	Shortcut to toggle relative mode. If relative mode is on, coordinates are relative to the last point, if available, else they are relative to the coordinate system origin.
Continue	Shortcut to toggle continue mode. If continue mode is on, commands will restart after finishing.
Close	Shortcut to press the Close button.
Copy	Shortcut to toggle copy mode. If copy mode is on, the command will create modified copies instead of modifying the original objects.
Subelement Mode	Shortcut to toggle subelement mode. If subelement mode is on, the command will use the selected subelements instead of the whole objects.
Fill	Shortcut to toggle filled mode. If filled mode is on, the created object will have 数据Make Face set to `true`.
Exit	Shortcut to press the Finish button.
Select Edge	Shortcut to press the Select edge button. See Draft Dimension.
Add Hold	Shortcut to insert a "hold point" at the current location of the cursor. See Draft Snap.
Length	Shortcut to change the focus from the X coordinate input box to the Length input box and vice versa.
Wipe	Shortcut to press the Wipe button.
Set WP	Shortcut to press the Set WP button.
Cycle Snap	Shortcut to change snap priority to an object that is obscured by other geometry. See Draft Snap.
Global	Shortcut to toggle global mode. If global mode is on, coordinates are relative to the global coordinate system, else they are relative to the working plane coordinate system. introduced in version 0.20
Snap	Shortcut to toggle Draft snapping.
Increase Radius	Shortcut to increase the maximum distance at which Draft Snap Grid detects the intersections of grid lines. See Draft SelectPlane.
Decrease Radius	Shortcut to decrease the maximum distance at which Draft Snap Grid detects the intersections of grid lines.
Restrict X	Shortcut to constrain the movement of the cursor to the X axis. See Draft Constrain.
Restrict Y	Shortcut to constrain the movement of the cursor to the Y axis.
Restrict Z	Shortcut to constrain the movement of the cursor to the Z axis.
Draft Statusbar	This option does not work properly, it should always be checked.
Draft snap widget	If checked, the Draft snap widget is enabled. After changing this preference you must restart FreeCAD.
Annotation scale widget	If checked, the Draft annotation scale widget is enabled. After changing this preference you must restart FreeCAD.

网格与捕捉

Note that several grid preferences can also be changed with the Draft SelectPlane command. This command will update the grid in the current 3D view in real-time.

On the Grid and snapping tab you can specify the following:

Name	Description
Always snap (disable snap mod)	If checked, snapping is activated without the need to press the Snap mod key.
Constrain mod	The Constraining modifier key. After changing this preference you must restart FreeCAD.
Snap mod	The Snap modifier key. After changing this preference you must restart FreeCAD.
Alt mod	The Alt modifier key. The function of this key depends on the command. After changing this preference you must restart FreeCAD.
Show Draft Snap toolbar	If checked, the Snap toolbar will be shown whenever a command is active. This option and the next option should both be checked or unchecked. Other combinations do not make sense.
Hide Draft snap toolbar after use	If checked, the Snap toolbar will be hidden after use. This option and the previous option should both be checked or unchecked. Other combinations do not make sense.
Use grid	If checked, a grid will appear when drawing. After changing this preference you must restart FreeCAD.
Always show the grid	If checked, the Draft grid will always be visible when the Draft Workbench or Arch Workbench is active. Otherwise only when using a command.
Show grid border	If checked, an additional border is displayed around the grid, showing the main square size in the bottom left corner. After changing this preference you must open a new 3D view or restart FreeCAD.
Show human figure	If checked, the outline of a human figure is displayed at the bottom left corner of the grid, provided Show grid border mentioned above is also checked, and the BIM Workbench is installed. introduced in version 0.20 After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Use colored axes	If checked, the two main axes of the grid will be colored red, green or blue if they match the X, Y or Z axis of the global coordinate system. After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Main lines every	The number of squares between main grid lines. These lines are thicker than normal grid lines. After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Grid spacing	The distance between grid lines. After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Grid size	The number of horizontal and vertical lines of the grid. After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Grid color and transparency	The color and the overall transparency of the grid. After changing this preference you must use Draft ToggleGrid twice or restart FreeCAD.
Maximum number of contemporary edited objects	The maximum number of objects Draft Edit is allowed to process at the same time. After changing this preference you must restart FreeCAD.
Draft edit pick radius	The pick radius (in pixels) of edit nodes. After changing this preference you must restart FreeCAD.

可视化设置

On the Visual settings tab you can specify the following:

Name	Description
Snap symbols style	The symbols used to mark found snap points. The options are: Draft classic style Bitsnpieces style. After changing this preference you must restart FreeCAD.
Color	The color used for snap symbols, snap dimensions and edit nodes. After changing this preference you must restart FreeCAD.
Save current color and linewidth across sessions	Not used. The color and linewidth set in the Draft Tray are always saved.
Show Working Plane tracker	If checked, a widget indicating the current working plane orientation appears during drawing operations.
Default template sheet	Obsolete. The template used by the Draft Drawing command.
Alternate SVG Patterns location	A directory with custom SVG patterns. Select a file in the directory and then remove the filename in the preferences input box, leaving only the path. After changing this preference you must restart FreeCAD.
Hatch patterns resolution	Not used.
Hatch Pattern default size	The default pattern size. Note that a higher value results in a denser pattern.
Preserve colors of faces during downgrade/upgrade	If checked, the colors of faces are preserved during downgrade and upgrade operations (splitFaces and makeShell only).
Preserve names of faces during downgrade/upgrade	If checked, face names are derived from the original object names and vice versa during downgrade and upgrade operations (splitFaces and makeShell only).
Dashed line definition	SVG linestyle definition used by the TechDraw DraftView command.
Dashdot line definition	Idem.
Dotted line definition	Idem.

文本与标注

These preferences are the defaults used when creating new objects. Changing them does not affect existing objects.

On the Texts and dimensions tab you can specify the following:

Name	Description
Font family	The font used for all Draft texts and dimensions. It can be a font name such as `Arial`, a style such as `sans`, `serif` or `mono`, a font family such as `Arial,Helvetica,sans`, or a name with a style such as `Arial:Bold`.
Font size	The height for texts and dimensions.
Display mode	Specifies how the dimension text is displayed. The options are: text above (2D): the dimension text is displayed in a plane defined by the 数据Normal of the dimension. text inside (3D): the dimension text always faces the camera.
Number of decimals	The number of decimal places to display for the dimension text.
Extension lines size	The length of the extension lines below the dimension line.
Extension line overshoot	The length of the extension lines above the dimension line.
Dimension line overshoot	The distance the dimension line is extended beyond the extension lines.
Arrows style	The symbol to display at the ends of the dimension line. The options are: Dot Circle Arrow Tick Tick-2
Arrows size	The size of the arrows.
Text orientation	Not used. The orientation of the dimension text when the dimension is vertical. The options are: Left (ISO standard) Right
Text spacing	The space between the dimension line and the dimension text.
Show the unit suffix in dimensions	If checked, the unit symbol are added to the dimension text.
Override unit	By default dimensions will use the current unit defined in FreeCAD. By specifying a different unit here, such as `m` or `cm`, new dimensions will use that unit instead.
Default ShapeString font file	The default font file to use. See Draft ShapeString. For Windows users: please read the Font file selection on Windows paragraph on that page.