Draft BezCurve: Difference between revisions

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{{Docnav
{{Docnav|[[Draft_Facebinder|Facebinder]]|[[Draft CubicBezCurve|CubicBezCurve]]|[[Draft_Module|Draft]]|IconL=Draft_Facebinder.svg |IconC=Workbench_Draft.svg|IconR=Draft CubicBezCurve.svg }}
|[[Draft_CubicBezCurve|CubicBezCurve]]
|[[Draft_Point|Point]]
|[[Draft_Workbench|Draft]]
|IconL=Draft_CubicBezCurve.svg
|IconR=Draft_Point.svg
|IconC=Workbench_Draft.svg
}}


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{{GuiCommand
{{GuiCommand
|Name=Draft BezCurve
|Name=Draft BezCurve
|MenuLocation=Drafting → Bézier tools → Bézier curve
|Workbenches=[[Draft Module|Draft]], [[Arch Module|Arch]]
|Workbenches=[[Draft_Workbench|Draft]], [[Arch_Workbench|Arch]]
|MenuLocation=Draft → Bezier tools → BezCurve
|Shortcut=B Z
|Shortcut={{KEY|B}} {{KEY|Z}}
|Version=0.14
|SeeAlso=[[Draft Wire]], [[Draft BSpline]]
|SeeAlso=[[Draft_CubicBezCurve|Draft CubicBezCurve]], [[Draft_BSpline|Draft BSpline]]
|Version=0.14}}
}}


==Description== <!--T:1-->
==Description== <!--T:1-->


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The BezCurve tool creates a [http://en.wikipedia.org/wiki/Bezier_curve Bezier Curve], or a piecewise Bezier curve, from several points. It uses the [[Draft Linestyle]] set on the [[Draft Tray]].
The [[Image:Draft_BezCurve.svg|24px]] '''Draft BezCurve''' command creates a [http://en.wikipedia.org/wiki/Bezier_curve Bézier curve] from several points.

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The command creates a single Bézier curve with a {{PropertyData|Degree}} that is {{incode|number_of_points - 1}}. It can be transformed into a piecewise Bézier curve by reducing this property.


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The BezCurve tool curve uses {{Emphasis|control points}} to define the direction of the curve; on the other hand the [[Draft BSpline]] tool specifies the exact points through which the curve will go. To create exact circular or elliptical curves, use [[Draft Arc]] and [[Draft Ellipse]].
The Draft BezCurve and the [[Draft_CubicBezCurve|Draft CubicBezCurve]] commands use {{Emphasis|control points}} to define the position and curvature of the spline. The [[Draft BSpline|Draft BSpline]] command, on the other hand, specifies the {{Emphasis|exact points}} through which the curve will pass.


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{{Caption|Bezier curve defined by multiple control points}}
{{Caption|Bézier curve defined by multiple points}}


==How to use== <!--T:3-->
==Usage== <!--T:3-->

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


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# There are several ways to invoke the command:
# Press the {{Button|[[Image:Draft_BezCurve.png|16px]] [[Draft BezCurve]]}} button, or press {{KEY|B}} then {{KEY|Z}} 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_BezCurve.svg|16px]] [[Draft_BezCurve|Bézier curve]]}} button.
#* Select the {{MenuCommand|Drafting → Bézier tools → [[Image:Draft_BezCurve.svg|16px]] Bézier curve}} option from the menu.
# Click additional points 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|B}} then {{KEY|Z}}. {{Version|0.20}}
# Press {{KEY|Esc}} or the {{Button|Close}} button, or double-click the last point to complete the edition.
# The {{MenuCommand|Bézier curve}} task panel opens. See [[#Options|Options]] for more information.
# 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 additional points in the [[3D_view|3D view]], or type coordinates and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] Enter point}} button.
# Press {{KEY|Esc}} or the {{Button|Close}} button to finish the command.


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==Options== <!--T:4-->
The object is created as a single Bezier curve of degree {{incode|number_of_points - 1}}. It can be transformed to a piecewise wire made of curves of a specified degree by changing its properties.


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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).
The curve can be edited by double clicking on the element in the tree view, or by pressing the {{Button|[[Image:Draft Edit.svg|16px]] [[Draft Edit]]}} button. Then you can move the points to a new position, or click {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} or {{Button|[[Image:Draft_DelPoint.svg|16px]] [[Draft_DelPoint|remove point]]}} and then click on the curve to add or remove points. You can also change the constraint type of each point.


=== Node constraints === <!--T:13-->
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* 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.
* 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|F}} or click the {{MenuCommand|Filled}} checkbox to toggle filled mode. If filled mode is on, the created curve will have {{PropertyData|Make Face}} set to {{TRUE}} and will have a filled face, provided it is closed and does not self-intersect. Note that a self-intersecting curve with a face will not display properly, for such a curve {{PropertyData|Make Face}} must be set to {{FALSE}}.
* Press {{KEY|N}} or click the {{MenuCommand|Continue}} checkbox to toggle continue mode. If continue mode is on, the command will restart after using {{Button|[[Image:Draft_FinishLine.svg|16px]] Finish}} or {{Button|[[Image:Draft_CloseLine.svg|16px]] Close}}, or after creating a closed curve by snapping to the first point of the curve, allowing you to continue creating curves.
* Press {{KEY|/}} or the {{Button|[[Image:Draft_UndoLine.svg|16px]] Undo}} button to undo the last point.
* Press {{KEY|A}} or the {{Button|[[Image:Draft_FinishLine.svg|16px]] Finish}} button to finish the command and leave the curve open.
* Press {{KEY|O}} or the {{Button|[[Image:Draft_CloseLine.svg|16px]] Close}} button to finish the command and close the curve. A closed curve can also be created by snapping to the first point of the curve.
* Press {{KEY|W}} or the {{Button|[[Image:Draft Wipe.svg|16px]] Wipe}} button to delete the segments already placed, but keep working from the last point.
* Press {{KEY|U}} or the {{Button|[[Image:Draft SelectPlane.svg|16px]] [[Draft_SelectPlane|Set WP]]}} button to adjust the current working plane in the orientation defined by the last and the previous point.
* Press {{KEY|S}} to switch [[Draft_Snap|Draft snapping]] on or off.
* Press {{KEY|Esc}} or the {{Button|Close}} button to finish the command.


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==Notes== <!--T:29-->
The segment endpoints can be constrained such that adjacent control points are tangent or symmetric to the segments at the endpoint.
First, start editing the curve, then pick one of the tools and then pick a point. Click again on the tool to deactivate it, so you can move the point.
* {{Button|[[Image:Draft_BezSharpNode.svg|32px]] sharp}} remove constraints on the points so the curve can have sharp corners.
* {{Button|[[Image:Draft_BezTanNode.svg|32px]] tangent}} force adjacent control points to be tangent.
* {{Button|[[Image:Draft_BezSymNode.svg|32px]] symmetric}} force adjacent control points to be tangent and equidistant.


===Limitations=== <!--T:11-->
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* A Draft BezCurve can be edited with the [[Draft_Edit|Draft Edit]] command.
* The Points property does not yet appear in the properties list.
* OpenCascade, and thus FreeCAD, does not support Bezier curves of degrees larger than 25. This should not be a problem in practice, as most users would typically use Bezier curves of degrees 3 to 5.
* OpenCascade, and therefore FreeCAD, does not support Bézier curves of degrees larger than 25. This should not be a problem in practice, as most users typically use Bézier curves of degrees 3 to 5.


==Options== <!--T:4-->
==Properties== <!--T:6-->


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See also: [[Property_editor|Property editor]].
* Press {{KEY|A}} or the {{Button|[[Image:Draft FinishLine.png|12px]] [[Draft_FinishLine|Finish]]}} button to finish the curve, leaving it open.
* Press {{KEY|O}} or the {{Button|[[Image:Draft CloseLine.png|12px]] [[Draft_CloseLine|Close]]}} button to close the curve, that is, a segment will be added from the last point to the first one to form a face. At least four points, a curve of degree three, are required to form a face.
* Press {{KEY|W}} or the {{Button|[[Image:Draft Wipe.svg|12px]] [[Draft_Wipe|Wipe]]}} button to remove the curve segments already placed, but keep editing the curve from the last point.
* Press {{KEY|U}} or the {{Button|[[Image:Draft SelectPlane.svg|12px]] [[Draft_SelectPlane|Set WP]]}} button to adjust the current working plane in the orientation of the last point.
* Press {{KEY|X}}, {{KEY|Y}} or {{KEY|Z}} after a point to constrain the next point on the given axis.
* To enter coordinates manually, simply enter the numbers, then press {{KEY|Enter}} between each X, Y and Z component.
* Press {{KEY|R}} or click the checkbox to toggle ''relative'' mode. If relative mode is on, the coordinates of the next point are relative to the last one; if not, they are absolute, taken from the origin (0,0,0).
* Press {{KEY|T}} or click the checkbox to toggle ''continue'' mode. If continue mode is on, the BezCurve tool will restart after you finish the curve, allowing you to draw another one without pressing the tool button again.
* Press {{KEY|L}} or click the checkbox to toggle ''filled'' mode. If filled mode is on, a closed wire will create a filled face ({{PropertyData|Make Face}} {{TRUE}}); if not, the closed wire will not make a face ({{PropertyData|Make Face}} {{FALSE}}).
:{{Emphasis|Note:}} the curve should not be filled if it intersects itself, as it won't create a proper face. If the curve is filled but no shape is visible, manually set {{PropertyData|Make Face}} to {{FALSE}} to see the curve.
* Hold {{KEY|Ctrl}} while drawing to force [[Draft_Snap|snapping]] your point to the nearest snap location, independently of the distance.
* Hold {{KEY|Shift}} while drawing to [[Draft_Constrain|constrain]] your next point horizontally or vertically in relation to the last one.
* Press {{KEY|Ctrl}}+{{KEY|Z}} or press the {{button|[[Image:Draft UndoLine.png|12px]] [[Draft_UndoLine|Undo]]}} button to undo the last point.
* Press {{KEY|Esc}} or the {{button|Close}} button to abort the current command; curve segments already placed will remain.


==Properties== <!--T:6-->
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A Draft BezCurve object is derived from a [[Part_Part2DObject|Part Part2DObject]] and inherits all its properties. It also has the following additional properties:

=== Data === <!--T:32-->

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{{TitleProperty|Draft}}

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* {{PropertyData|Area|Area}}: (read-only) specifies the area of the face of the curve. The value will be {{value|0.0}} if {{PropertyData|Make Face}} if {{FALSE}} or the face cannot be created.
* {{PropertyData|Closed|Bool}}: specifies if the curve is closed or not. If the curve is initially open this value is {{FALSE}}, setting it to {{TRUE}} will draw a segment to close the curve. If the curve is initially closed this value is {{TRUE}}, setting it to {{FALSE}} will remove the last segment and make the curve open.
* {{PropertyData|Continuity|IntegerList}}: (read-only) specifies the continuity of the curve.
* {{PropertyData|Degree|Integer}}: specifies the degree of the curve.
* {{PropertyData|Length|Length}}: (read-only) specifies the total length of the curve.
* {{PropertyData|Make Face|Bool}}: specifies if the curve makes a face or not. If it is {{TRUE}} a face is created, otherwise only the perimeter is considered part of the object. This property only works if {{PropertyData|Closed}} is {{TRUE}} and if the curve does not self-intersect.
* {{PropertyData|Points|VectorList}}: specifies the control points of the curve in its local coordinate system.

=== View === <!--T:34-->

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{{TitleProperty|Draft}}


=== Data === <!--T:20-->
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* {{PropertyData|Degree}}: specifies the degree of the Bezier curve or the individual segments.
* {{PropertyView|Arrow Size|Length}}: specifies the size of the symbol displayed at the end of the curve.
* {{PropertyView|Arrow Type|Enumeration}}: specifies the type of symbol displayed at the end of the curve, which can be {{value|Dot}}, {{value|Circle}}, {{value|Arrow}}, {{value|Tick}} or {{value|Tick-2}}.
* {{PropertyData|Closed}}: specifies if the curve is closed or not. If the curve is initially open, this value is {{FALSE}}; setting it to {{TRUE}} will draw a segment to close the curve. If the curve is initially closed, this value is {{TRUE}}; setting it to {{FALSE}} will remove the last segment, and make the curve open.
* {{PropertyView|End Arrow|Bool}}: specifies whether to show a symbol at the end of the curve, so it can be used as an annotation line.
* {{PropertyData|Make Face}}: specifies if the curve makes a face or not. If it is {{TRUE}} a face is created, otherwise only the perimeter is considered part of the object. This property only works if {{PropertyData|Closed}} is {{TRUE}}.
* {{PropertyView|Pattern|Enumeration}}: specifies the [[Draft_Pattern|Draft Pattern]] with which to fill the face of the closed curve. This property only works if {{PropertyData|Make Face}} is {{TRUE}} and if {{PropertyView|Display Mode}} is {{value|Flat Lines}}.
:{{Emphasis|Note:}} do not set {{PropertyData|Make Face}} to {{TRUE}} if the curve intersects itself, as it won't create a proper face.
* {{PropertyView|Pattern Size|Float}}: specifies the size of the [[Draft_Pattern|Draft Pattern]].
* {{PropertyData|Continuity}}: (read-only) when the curve is closed, indicates the continuity of the curve {{incode|[0]}}, or {{incode|[0,0]}}. Otherwise it's {{incode|[]}}.


=== View === <!--T:21-->
==Scripting== <!--T:36-->
* {{PropertyView|Arrow Size}}: specifies the size of the symbol displayed at the end of the curve.
* {{PropertyView|Arrow Type}}: specifies the type of symbol displayed at the end of the curve, which can be dot, circle, arrow, and tick.
* {{PropertyView|End Arrow}}: specifies whether to show a symbol at the last point of the curve, so it can be used as an annotation line.
* {{PropertyView|Pattern}}: specifies a [[Draft Pattern]] with which to fill the face of the closed curve. This property only works if {{PropertyData|Make Face}} is {{TRUE}}, and if {{PropertyView|Display Mode}} is "Flat Lines".
* {{PropertyView|Pattern Size}}: specifies the size of the [[Draft Pattern]].


==Scripting== <!--T:8-->
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{{Emphasis|See also:}} [[Draft API]] and [[FreeCAD Scripting Basics]].
See also: [https://freecad.github.io/SourceDoc/ Autogenerated API documentation] and [[FreeCAD Scripting Basics|FreeCAD Scripting Basics]].


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To create a Draft Line use the {{incode|make_bezcurve}} method ({{Version|0.19}}) of the Draft module. This method replaces the deprecated {{incode|makeBezCurve}} method.
The BezCurve tool can be used in [[macros]] and from the [[Python]] console by using the following function:

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{{Code|code=
{{Code|code=
BezCurve = makeBezCurve(pointslist, closed=False, placement=None, face=None, support=None, degree=None)
bezcurve = make_bezcurve(pointslist, closed=False, placement=None, face=None, support=None, degree=None)
BezCurve = makeBezCurve(Part.Wire, closed=False, placement=None, face=None, support=None, degree=None)
bezcurve = make_bezcurve(Part.Wire, closed=False, placement=None, face=None, support=None, degree=None)
}}
}}
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* Creates a {{incode|BezCurve}} object with the given list of points, {{incode|pointslist}}.
* Creates a {{incode|bezcurve}} object with the given list of points, {{incode|pointslist}}.
** Each point in the list is defined by its {{incode|FreeCAD.Vector}}, with units in millimeters.
** Each point in the list is defined by its {{incode|FreeCAD.Vector}}, with units in millimeters.
** Alternatively, the input can be a {{incode|Part.Wire}}, from which points are extracted.
** Alternatively, the input can be a {{incode|Part.Wire}}, from which points are extracted.
* If {{incode|closed}} is {{incode|True}}, or if the first and last points are identical, the curve is closed.
* If {{incode|closed}} is {{incode|True}}, or if the first and last points are identical, the curve is closed.
* If a {{incode|placement}} is given, it is used; otherwise the shape is created at the origin.
* If {{incode|placement}} is {{incode|None}} the curve is created at the origin.
* If {{incode|face}} is {{incode|True}}, and the wire is closed, the wire will make a face, that is, it will appear filled.
* If {{incode|face}} is {{incode|True}}, and the curve is closed, the curve will make a face, that is, it will appear filled.


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Example:
Example:

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{{Code|code=
{{Code|code=
import FreeCAD, Draft
import FreeCAD as App
import Draft


doc = App.newDocument()
p1 = FreeCAD.Vector(0, 0, 0)
p2 = FreeCAD.Vector(1000, 1000, 0)
p3 = FreeCAD.Vector(2000, 0, 0)
p4 = FreeCAD.Vector(1500, -2000, 0)


p1 = App.Vector(0, 0, 0)
BezCurve1 = Draft.makeBezCurve([p1, p2, p3, p4], closed=True)
p2 = App.Vector(1000, 1000, 0)
BezCurve2 = Draft.makeBezCurve([p4, 1.3*p2, p1, 4.1*p3], closed=True)
p3 = App.Vector(2000, 0, 0)
BezCurve3 = Draft.makeBezCurve([1.7*p3, 1.5*p4, 2.1*p2, p1], closed=True)
p4 = App.Vector(1500, -2000, 0)

bezcurve1 = Draft.make_bezcurve([p1, p2, p3, p4], closed=True)
bezcurve2 = Draft.make_bezcurve([p4, 1.3*p2, p1, 4.1*p3], closed=True)
bezcurve3 = Draft.make_bezcurve([1.7*p3, 1.5*p4, 2.1*p2, p1], closed=True)

doc.recompute()
}}
}}
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{{Docnav|[[Draft_Facebinder|Facebinder]]|[[Draft CubicBezCurve|CubicBezCurve]]|[[Draft_Module|Draft]]|IconL=Draft_Facebinder.svg |IconC=Workbench_Draft.svg|IconR=Draft CubicBezCurve.svg }}


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{{Docnav
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|[[Draft_CubicBezCurve|CubicBezCurve]]
|[[Draft_Point|Point]]
|[[Draft_Workbench|Draft]]
|IconL=Draft_CubicBezCurve.svg
|IconR=Draft_Point.svg
|IconC=Workbench_Draft.svg
}}


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Latest revision as of 18:28, 6 January 2024

Draft BezCurve

Menu location
Drafting → Bézier tools → Bézier curve
Workbenches
Draft, Arch
Default shortcut
B Z
Introduced in version
0.14
See also
Draft CubicBezCurve, Draft BSpline

Description

The Draft BezCurve command creates a Bézier curve from several points.

The command creates a single Bézier curve with a DataDegree that is number_of_points - 1. It can be transformed into a piecewise Bézier curve by reducing this property.

The Draft BezCurve and the Draft CubicBezCurve commands use control points to define the position and curvature of the spline. The Draft BSpline command, on the other hand, specifies the exact points through which the curve will pass.

Bézier curve defined by multiple points

Usage

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

  1. There are several ways to invoke the command:
  2. The Bézier curve 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 additional points in the 3D view, or type coordinates and press the Enter point button.
  5. Press Esc or the Close button to finish the command.

Options

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 F or click the Filled checkbox to toggle filled mode. If filled mode is on, the created curve will have DataMake Face set to true and will have a filled face, provided it is closed and does not self-intersect. Note that a self-intersecting curve with a face will not display properly, for such a curve DataMake Face must be set to false.
  • Press N or click the Continue checkbox to toggle continue mode. If continue mode is on, the command will restart after using Finish or Close, or after creating a closed curve by snapping to the first point of the curve, allowing you to continue creating curves.
  • Press / or the Undo button to undo the last point.
  • Press A or the Finish button to finish the command and leave the curve open.
  • Press O or the Close button to finish the command and close the curve. A closed curve can also be created by snapping to the first point of the curve.
  • Press W or the Wipe button to delete the segments already placed, but keep working from the last point.
  • Press U or the Set WP button to adjust the current working plane in the orientation defined by the last and the previous point.
  • Press S to switch Draft snapping on or off.
  • Press Esc or the Close button to finish the command.

Notes

  • A Draft BezCurve can be edited with the Draft Edit command.
  • OpenCascade, and therefore FreeCAD, does not support Bézier curves of degrees larger than 25. This should not be a problem in practice, as most users typically use Bézier curves of degrees 3 to 5.

Properties

See also: Property editor.

A Draft BezCurve object is derived from a Part Part2DObject and inherits all its properties. It also has the following additional properties:

Data

Draft

  • DataArea (Area): (read-only) specifies the area of the face of the curve. The value will be 0.0 if DataMake Face if false or the face cannot be created.
  • DataClosed (Bool): specifies if the curve is closed or not. If the curve is initially open this value is false, setting it to true will draw a segment to close the curve. If the curve is initially closed this value is true, setting it to false will remove the last segment and make the curve open.
  • DataContinuity (IntegerList): (read-only) specifies the continuity of the curve.
  • DataDegree (Integer): specifies the degree of the curve.
  • DataLength (Length): (read-only) specifies the total length of the curve.
  • DataMake Face (Bool): specifies if the curve makes a face or not. If it is true a face is created, otherwise only the perimeter is considered part of the object. This property only works if DataClosed is true and if the curve does not self-intersect.
  • DataPoints (VectorList): specifies the control points of the curve in its local coordinate system.

View

Draft

  • ViewArrow Size (Length): specifies the size of the symbol displayed at the end of the curve.
  • ViewArrow Type (Enumeration): specifies the type of symbol displayed at the end of the curve, which can be Dot, Circle, Arrow, Tick or Tick-2.
  • ViewEnd Arrow (Bool): specifies whether to show a symbol at the end of the curve, so it can be used as an annotation line.
  • ViewPattern (Enumeration): specifies the Draft Pattern with which to fill the face of the closed curve. This property only works if DataMake Face is true and if ViewDisplay Mode is Flat Lines.
  • ViewPattern Size (Float): specifies the size of the Draft Pattern.

Scripting

See also: Autogenerated API documentation and FreeCAD Scripting Basics.

To create a Draft Line use the make_bezcurve method (introduced in version 0.19) of the Draft module. This method replaces the deprecated makeBezCurve method.

bezcurve = make_bezcurve(pointslist, closed=False, placement=None, face=None, support=None, degree=None)
bezcurve = make_bezcurve(Part.Wire, closed=False, placement=None, face=None, support=None, degree=None)
  • Creates a bezcurve object with the given list of points, pointslist.
    • Each point in the list is defined by its FreeCAD.Vector, with units in millimeters.
    • Alternatively, the input can be a Part.Wire, from which points are extracted.
  • If closed is True, or if the first and last points are identical, the curve is closed.
  • If placement is None the curve is created at the origin.
  • If face is True, and the curve is closed, the curve will make a face, that is, it will appear filled.

Example:

import FreeCAD as App
import Draft

doc = App.newDocument()

p1 = App.Vector(0, 0, 0)
p2 = App.Vector(1000, 1000, 0)
p3 = App.Vector(2000, 0, 0)
p4 = App.Vector(1500, -2000, 0)

bezcurve1 = Draft.make_bezcurve([p1, p2, p3, p4], closed=True)
bezcurve2 = Draft.make_bezcurve([p4, 1.3*p2, p1, 4.1*p3], closed=True)
bezcurve3 = Draft.make_bezcurve([1.7*p3, 1.5*p4, 2.1*p2, p1], closed=True)

doc.recompute()