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<languages/>
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{{Docnav/ru
{{Docnav/ru
|[[Draft_Arc/ru|Arc]]
|[[Draft_Arc/ru|Дуга]]
|[[Draft_Ellipse/ru|Ellipse]]
|[[Draft_Circle/ru|Окружность]]
|[[Draft_Module/ru|Draft]]
|[[Draft_Workbench/ru|Верстак "Draft"]]
|IconL=Draft_Circle.svg
|IconL=Draft_Arc.svg
|IconR=Draft_Circle.svg
|IconC=Workbench_Draft.svg
|IconC=Workbench_Draft.svg
|IconR=Draft_Ellipse.svg
}}
}}
</div>


<div class="mw-translate-fuzzy">
<div class="mw-translate-fuzzy">
{{GuiCommand/ru
{{GuiCommand/ru
|Name=Draft Arc 3Points
|Name=Draft Arc 3Points
|Name/ru=Draft Arc 3Points
|MenuLocation=Draft → Arc 3 points
|MenuLocation=Draft → Arc 3 points
|Workbenches=[[Draft Module/ru|Draft]], [[Arch Module/ru|Arch]]
|Workbenches=[[Draft_Workbench/ru|Draft]], [[Arch_Workbench/ru|Arch]]
|Shortcut={{KEY|A}} {{KEY|T}}
|Shortcut={{KEY|A}} {{KEY|T}}
|SeeAlso=[[Draft Arc/ru|Draft Arc]], [[Draft Circle/ru|Draft Circle]], [[Draft Ellipse/ru|Draft Ellipse]]
|Version=0.19
|Version=0.19
|SeeAlso=[[Draft Arc/ru|Draft Arc]], [[Draft Circle/ru|Draft Circle]], [[Draft Ellipse/ru|Draft Ellipse]]
}}
}}
</div>
</div>


<span id="Description"></span>
==Описание==
==Описание==


The {{Button|[[Image:Draft_Arc_3Points.svg|16px]] [[Draft_Arc 3Points|Arc 3Points]]}} tool creates a circular arc in the current [[Draft_SelectPlane|work plane]] by entering three points that lie on the circumference; the center and radius are determined from these three points. It uses the [[Draft_Linestyle|Draft Linestyle]] set on the [[Draft_Tray|Draft Tray]].
The [[Image:Draft_Arc_3Points.svg|24px]] '''Draft Arc 3Points''' command creates a circular arc on the current [[Draft_SelectPlane|working plane]] from three points that define its circumference. The center and radius are calculated from these points.


A Draft Arc is in fact a [[Draft_Circle|Draft Circle]] with a {{PropertyData|First Angle}} that is not the same as its {{PropertyData|Last Angle}}.
Use the [[Draft Arc|Draft Arc]] tool to create a circular arc by specifying the center, the radius, and the start and end angles. To draw an elliptical arc use [[Draft Ellipse|Draft Ellipse]]. You can also approximate a circular arc by using the [[Draft_BSpline|Draft BSpline]], [[Draft_BezCurve|Draft BezCurve]], and [[Draft_CubicBezCurve|Draft CubicBezCurve]] tools.


[[Image:Draft_Arc_3Points_example.png|400px]]
[[Image:Draft_Arc_3Points_example.png|400px]]
{{Caption|Arc defined by three points on its circumference}}


<span id="Usage"></span>
{{Caption|Arc defined by three points lying on a circumference}}
==Применение==


See also: [[Draft_Tray|Draft Tray]], [[Draft_Snap|Draft Snap]] and [[Draft_Constrain|Draft Constrain]].
==Использование==


# There are several ways to invoke the command:
# Press the {{Button|[[Image:Draft Arc 3Points.svg|16px]] [[Draft Arc 3Points|Draft Arc 3Points]]}} button, or press {{KEY|A}} then {{KEY|T}} keys.
# Click a first point on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
#* Press the {{Button|[[Image:Draft_Arc_3Points.svg|16px]] [[Draft_Arc_3Points|Arc by 3 points]]}} button.
#* Select the {{MenuCommand|Drafting → Arc tools → [[Image:Draft_Arc_3Points.svg|16px]] Arc by 3 points}} option from the menu.
# Click a second point on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
#* Use the keyboard shortcut: {{KEY|A}} then {{KEY|T}}. {{Version|0.20}}
# Click a third point in the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
# The {{MenuCommand|Arc by 3 points}} task panel opens. See [[#Options|Options]] for more information.
# The arc will be created after the third point is given.
# Pick the first point in the [[3D_view|3D view]], or type coordinates and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] Enter point}} button.
# Pick the second point in the [[3D_view|3D view]], or type coordinates and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] Enter point}} button.
# Pick the third point in the [[3D_view|3D view]], or type coordinates and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] Enter point}} button.


==Options==
<span id="Options"></span>
==Опции==


The single character keyboard shortcuts available in the task panel can be changed. See [[Draft_Preferences|Draft Preferences]]. The shortcuts mentioned here are the default shortcuts (for version 0.22).
* Press {{KEY|X}}, {{KEY|Y}} or {{KEY|Z}} after one point to constrain the following point on the given axis.
* To enter coordinates manually, simply enter the numbers, then press {{KEY|Enter}} between each X, Y and Z component.
** You can press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button when you have entered the desired values to insert the point.
* Press {{KEY|R}} or click the checkbox to toggle ''relative'' mode. If relative mode is on, the coordinates of the following point are relative to the previous one; if not, they are absolute, taken from the origin {{incode|(0, 0, 0)}}.
* Hold {{KEY|Shift}} while drawing to [[Draft_Constrain|constrain]] your next point horizontally or vertically in relation to the previous one.
* Press {{KEY|Esc}} or the {{Button|Close}} button to abort the current command.


* To manually enter coordinates enter the X, Y and Z component, and press {{KEY|Enter}} after each. Or you can press the {{Button|[[Image:Draft_AddPoint.svg|16px]] Enter point}} button when you have the desired values. It is advisable to move the pointer out of the [[3D_view|3D view]] before entering coordinates.
==Properties==
* Press {{KEY|R}} or click the {{MenuCommand|Relative}} checkbox 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.
* Press {{KEY|G}} or click the {{MenuCommand|Global}} checkbox to toggle global mode. If global mode is on, coordinates are relative to the global coordinate system, else they are relative to the [[Draft_SelectPlane|working plane]] coordinate system. {{Version|0.20}}
* Press {{KEY|N}} or click the {{MenuCommand|Continue}} checkbox to toggle continue mode. If continue mode is on, the command will restart after finishing, allowing you to continue creating arcs. {{Version|0.20}}
* Press {{KEY|S}} to switch [[Draft_Snap|Draft snapping]] on or off.
* Press {{KEY|Esc}} or the {{Button|Close}} button to abort the command.


<span id="Notes"></span>
An Arc object shares all properties from a [[Draft Circle|Draft Circle]], but some properties only make sense for the circle. See [[Draft Arc|Draft Arc]] for more information.
==Примечания==


* A Draft Arc can be edited with the [[Draft_Edit|Draft Edit]] command.
==Scripting==


<span id="Preferences"></span>
{{Emphasis|See also:}} [[Draft API|Draft API]] and [[FreeCAD Scripting Basics|FreeCAD Scripting Basics]].
==Настройки==


See also: [[Preferences_Editor|Preferences Editor]] and [[Draft_Preferences|Draft Preferences]].
The Arc by 3 points tool can be used in [[macros|macros]] and from the [[Python_console|Python console]] by using the following function:

* If the {{MenuCommand|Edit → Preferences... → Draft → General → Create Part primitives if possible}} option is checked, the command will create a non-editable [[Part_Feature|Part Feature]] instead of a Draft Circle.

<span id="Properties"></span>
==Свойства==

See [[Draft_Circle#Properties|Draft Circle]].

<span id="Scripting"></span>
==Программирование==

See also: [https://freecad.github.io/SourceDoc/ Autogenerated API documentation] and [[FreeCAD Scripting Basics|FreeCAD Scripting Basics]].

To create a Draft Arc by 3 points use the {{incode|make_arc_3points}} method of the Draft module:


{{Code|code=
{{Code|code=
Line 67: Line 89:
* If a {{incode|placement}} is given, the center of the circular arc will be moved to this place. See [[Placement|Placement]] for more information.
* If a {{incode|placement}} is given, the center of the circular arc will be moved to this place. See [[Placement|Placement]] for more information.
* If {{incode|face}} is {{incode|True}}, the arc will make a face, that is, it will appear filled.
* If {{incode|face}} is {{incode|True}}, the arc will make a face, that is, it will appear filled.
* If {{incode|support}} is given, it is a {{incode|LinkSubList}}, that is, a list indicating an object, and a subelement of that object. This is used so that the object appears referenced to this support.
* If {{incode|support}} is given, it is a {{incode|LinkSubList}}, that is, a list indicating an object and a subelement of that object. This is used so that the object appears referenced to this support.
:For example, <code>support=[(obj, ("Face1"))]</code>
: For example: <code>support=[(obj, ("Face1"))]</code>.
* If {{incode|map_mode}} is given, it is a string defining a type of mapping, for example, <code>map_mode='FlatFace'</code>, <code>map_mode='ThreePointsPlane'</code>, etc. See [[Part_Attachment|Part Attachment]] for more information.
* If {{incode|map_mode}} is given, it is a string defining a type of mapping, for example: <code>map_mode='FlatFace'</code>, <code>map_mode='ThreePointsPlane'</code>, etc. See [[Part_EditAttachment|Part EditAttachment]] for more information.
* If {{incode|primitive}} is {{incode|True}}, the arc created will be a simple [[Part_Feature|Part Feature]], not a complex Draft object.
* If {{incode|primitive}} is {{incode|True}}, the arc created will be a simple [[Part_Feature|Part Feature]], not a complex Draft object.


Пример:
Example:


{{Code|code=
{{Code|code=
import FreeCAD as App
import FreeCAD as App
import Draft
import draftobjects.arc_3points as arc3


doc = App.newDocument()
doc = App.newDocument()

points = [App.Vector(0, 0, 0),
points = [App.Vector(0, 0, 0),
App.Vector(5, 10, 0),
App.Vector(5, 10, 0),
App.Vector(10, 0, 0)]
App.Vector(10, 0, 0)]


arc = arc3.make_arc_3points(points)
arc = Draft.make_arc_3points(points)


doc.recompute()
doc.recompute()
}}
}}


{{Emphasis|Note:}} internally this function still uses {{incode|Draft.makeCircle}}, so the object created is the same as the one created by [[Draft_Circle|Circle]] and [[Draft_Arc|Arc]].


<div class="mw-translate-fuzzy">
{{Docnav/ru
{{Docnav/ru
|[[Draft_Arc/ru|Arc]]
|[[Draft_Arc/ru|Дуга]]
|[[Draft_Ellipse/ru|Ellipse]]
|[[Draft_Circle/ru|Окружность]]
|[[Draft_Module/ru|Draft]]
|[[Draft_Workbench/ru|Верстак "Draft"]]
|IconL=Draft_Circle.svg
|IconL=Draft_Arc.svg
|IconR=Draft_Circle.svg
|IconC=Workbench_Draft.svg
|IconC=Workbench_Draft.svg
|IconR=Draft_Ellipse.svg
}}
}}
</div>


{{Draft Tools navi{{#translation:}}}}
{{Draft Tools navi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}
{{clear}}

Latest revision as of 10:04, 30 January 2024

Draft Arc 3Points

Системное название
Draft Arc 3Points
Расположение в меню
Draft → Arc 3 points
Верстаки
Draft, Arch
Быстрые клавиши
A T
Представлено в версии
0.19
См. также
Draft Arc, Draft Circle, Draft Ellipse

Описание

The Draft Arc 3Points command creates a circular arc on the current working plane from three points that define its circumference. The center and radius are calculated from these points.

A Draft Arc is in fact a Draft Circle with a ДанныеFirst Angle that is not the same as its ДанныеLast Angle.

Arc defined by three points on its circumference

Применение

See also: Draft Tray, Draft Snap and Draft Constrain.

  1. There are several ways to invoke the command:
  2. The Arc by 3 points task panel opens. See Options for more information.
  3. Pick the first point in the 3D view, or type coordinates and press the Enter point button.
  4. Pick the second point in the 3D view, or type coordinates and press the Enter point button.
  5. Pick the third point in the 3D view, or type coordinates and press the Enter point button.

Опции

The single character keyboard shortcuts available in the task panel can be changed. See Draft Preferences. The shortcuts mentioned here are the default shortcuts (for version 0.22).

  • To manually enter coordinates enter the X, Y and Z component, and press Enter after each. Or you can press the Enter point button when you have the desired values. It is advisable to move the pointer out of the 3D view before entering coordinates.
  • Press R or click the Relative checkbox 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.
  • Press G or click the Global checkbox 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
  • Press N or click the Continue checkbox to toggle continue mode. If continue mode is on, the command will restart after finishing, allowing you to continue creating arcs. introduced in version 0.20
  • Press S to switch Draft snapping on or off.
  • Press Esc or the Close button to abort the command.

Примечания

  • A Draft Arc can be edited with the Draft Edit command.

Настройки

See also: Preferences Editor and Draft Preferences.

  • If the Edit → Preferences... → Draft → General → Create Part primitives if possible option is checked, the command will create a non-editable Part Feature instead of a Draft Circle.

Свойства

See Draft Circle.

Программирование

See also: Autogenerated API documentation and FreeCAD Scripting Basics.

To create a Draft Arc by 3 points use the make_arc_3points method of the Draft module:

arc = make_arc_3points(points, placement=None, face=False, support=None, map_mode="Deactivated", primitive=False)
  • Creates an arc object from the given points list.
  • If a placement is given, the center of the circular arc will be moved to this place. See Placement for more information.
  • If face is True, the arc will make a face, that is, it will appear filled.
  • If support is given, it is a LinkSubList, that is, a list indicating an object and a subelement of that object. This is used so that the object appears referenced to this support.
For example: support=[(obj, ("Face1"))].
  • If map_mode is given, it is a string defining a type of mapping, for example: map_mode='FlatFace', map_mode='ThreePointsPlane', etc. See Part EditAttachment for more information.
  • If primitive is True, the arc created will be a simple Part Feature, not a complex Draft object.

Пример:

import FreeCAD as App
import Draft

doc = App.newDocument()

points = [App.Vector(0, 0, 0),
          App.Vector(5, 10, 0),
          App.Vector(10, 0, 0)]

arc = Draft.make_arc_3points(points)

doc.recompute()