Sketcher SketchObject: Difference between revisions
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== Introduction == |
== Introduction == <!--T:1--> |
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A [[Sketcher_SketchObject|Sketcher SketchObject]], or formally a {{incode|Sketcher::SketchObject}}, is the base element to create 2D objects with the [[Sketcher_Workbench|Sketcher Workbench]]. |
A [[Sketcher_SketchObject|Sketcher SketchObject]], or formally a {{incode|Sketcher::SketchObject}}, is the base element to create 2D objects with the [[Sketcher_Workbench|Sketcher Workbench]]. |
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The {{incode|Sketcher::SketchObject}} is derived from [[Part_Part2DObject|Part Part2DObject]], which means it is a [[Part Feature|Part Feature]] object specialized for 2D geometry. Like Part2DObject, the SketchObject can be attached to planes and faces. In addition to this, the SketchObject can handle geometrical constraints of the lines and curves that are drawn within it. |
The {{incode|Sketcher::SketchObject}} is derived from [[Part_Part2DObject|Part Part2DObject]], which means it is a [[Part Feature|Part Feature]] object specialized for 2D geometry. Like Part2DObject, the SketchObject can be attached to planes and faces. In addition to this, the SketchObject can handle geometrical constraints of the lines and curves that are drawn within it. |
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== How to use == |
== How to use == <!--T:4--> |
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# Switch to the [[Sketcher Workbench|Sketcher Workbench]]. |
# Switch to the [[Sketcher Workbench|Sketcher Workbench]]. |
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# Press {{Button|[[File:Sketcher_NewSketch.svg|16px]] [[Sketcher_NewSketch|Sketcher NewSketch]]}}. |
# Press {{Button|[[File:Sketcher_NewSketch.svg|16px]] [[Sketcher_NewSketch|Sketcher NewSketch]]}}. |
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# Press {{Button|OK}}. |
# Press {{Button|OK}}. |
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The SketchObject can be used by itself to draw on a plane; however, it is most commonly used in conjunction with the [[PartDesign Workbench|PartDesign Workbench]] to create extruded solids. |
The SketchObject can be used by itself to draw on a plane; however, it is most commonly used in conjunction with the [[PartDesign Workbench|PartDesign Workbench]] to create extruded solids. |
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# Switch to the [[PartDesign Workbench|PartDesign Workbench]]. |
# Switch to the [[PartDesign Workbench|PartDesign Workbench]]. |
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# Press {{Button|[[File:PartDesign_Body.svg|16px]] [[PartDesign_Body|PartDesign Body]]}}. |
# Press {{Button|[[File:PartDesign_Body.svg|16px]] [[PartDesign_Body|PartDesign Body]]}}. |
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# Press {{Button|OK}}. |
# Press {{Button|OK}}. |
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== Properties == |
== Properties == <!--T:8--> |
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See [[Property|Property]] for all property types that scripted objects can have. |
See [[Property|Property]] for all property types that scripted objects can have. |
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A [[Sketcher_SketchObject|Sketcher SketchObject]] ({{incode|Sketcher::SketchObject}} class) is derived from a [[Part_Part2DObject|Part Part2DObject]] ({{incode|Part::Part2DObject}} class), therefore it shares all the latter's properties. |
A [[Sketcher_SketchObject|Sketcher SketchObject]] ({{incode|Sketcher::SketchObject}} class) is derived from a [[Part_Part2DObject|Part Part2DObject]] ({{incode|Part::Part2DObject}} class), therefore it shares all the latter's properties. |
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In addition to the properties described in [[Part_Part2DObject|Part Part2DObject]], the basic Sketcher SketchObject has the following properties in the [[property editor|property editor]]. |
In addition to the properties described in [[Part_Part2DObject|Part Part2DObject]], the basic Sketcher SketchObject has the following properties in the [[property editor|property editor]]. |
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=== Data === |
=== Data === <!--T:12--> |
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{{TitleProperty|Attachment}} |
{{TitleProperty|Attachment}} |
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* {{PropertyData|Map Mode}}: See [[Part Attachment|Part Attachment]] for more information on all attachment mapping modes. |
* {{PropertyData|Map Mode}}: See [[Part Attachment|Part Attachment]] for more information on all attachment mapping modes. |
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{{TitleProperty|Sketch}} |
{{TitleProperty|Sketch}} |
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* {{PropertyData|Constraints}}: named constraints, if they exist; otherwise it is an empty list {{incode|[]}}. |
* {{PropertyData|Constraints}}: named constraints, if they exist; otherwise it is an empty list {{incode|[]}}. |
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=== View === |
=== View === <!--T:15--> |
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{{TitleProperty|Auto Constraints}} |
{{TitleProperty|Auto Constraints}} |
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* {{PropertyView|Autoconstraints}}: if {{TRUE}} it will try setting constraints when the geometry is drawn. |
* {{PropertyView|Autoconstraints}}: if {{TRUE}} it will try setting constraints when the geometry is drawn. |
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{{TitleProperty|Visibility automation}} |
{{TitleProperty|Visibility automation}} |
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* {{PropertyView|Editing Workbench}}: normally {{incode|SketcherWorkbench}}, it is the name of the workbench to activate when editing the sketch. |
* {{PropertyView|Editing Workbench}}: normally {{incode|SketcherWorkbench}}, it is the name of the workbench to activate when editing the sketch. |
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* {{PropertyView|Show Support}}: if {{TRUE}} all objects this sketch is attached to are shown when opening the sketch. |
* {{PropertyView|Show Support}}: if {{TRUE}} all objects this sketch is attached to are shown when opening the sketch. |
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== Scripting == |
== Scripting == <!--T:18--> |
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{{Emphasis|See also:}} [[FreeCAD Scripting Basics|FreeCAD Scripting Basics]], and [[scripted objects|scripted objects]]. |
{{Emphasis|See also:}} [[FreeCAD Scripting Basics|FreeCAD Scripting Basics]], and [[scripted objects|scripted objects]]. |
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See [[Part_Feature|Part Feature]] for the general information. |
See [[Part_Feature|Part Feature]] for the general information. |
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A Sketcher SketchObject is created with the {{incode|addObject()}} method of the document. |
A Sketcher SketchObject is created with the {{incode|addObject()}} method of the document. |
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{{Sketcher Tools navi}} |
{{Sketcher Tools navi}} |
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{{Userdocnavi}} |
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Revision as of 10:20, 26 November 2019
Introduction
A Sketcher SketchObject, or formally a Sketcher::SketchObject
, is the base element to create 2D objects with the Sketcher Workbench.
The Sketcher::SketchObject
is derived from Part Part2DObject, which means it is a Part Feature object specialized for 2D geometry. Like Part2DObject, the SketchObject can be attached to planes and faces. In addition to this, the SketchObject can handle geometrical constraints of the lines and curves that are drawn within it.
How to use
- Switch to the Sketcher Workbench.
- Press Sketcher NewSketch.
- Select a Sketch orientation: XY-plane, XZ-plane, or YZ-plane. Optionally also choose Reverse direction, and give an Offset value.
- Press OK.
The SketchObject can be used by itself to draw on a plane; however, it is most commonly used in conjunction with the PartDesign Workbench to create extruded solids.
- Switch to the PartDesign Workbench.
- Press PartDesign Body.
- Press PartDesign NewSketch.
- Select feature: XY_Plane (Base plane), XZ_Plane (Base plane), or YZ_Plane (Base plane).
- Press OK.
Properties
See Property for all property types that scripted objects can have.
A Sketcher SketchObject (Sketcher::SketchObject
class) is derived from a Part Part2DObject (Part::Part2DObject
class), therefore it shares all the latter's properties.
In addition to the properties described in Part Part2DObject, the basic Sketcher SketchObject has the following properties in the property editor.
Data
Attachment
- DataMap Mode: See Part Attachment for more information on all attachment mapping modes.
Sketch
- DataConstraints: named constraints, if they exist; otherwise it is an empty list
[]
.
View
Auto Constraints
- ViewAutoconstraints: if
true
it will try setting constraints when the geometry is drawn.
Visibility automation
- ViewEditing Workbench: normally
SketcherWorkbench
, it is the name of the workbench to activate when editing the sketch. - ViewHide Dependent: if
true
all objects that depend on the sketch are hidden when opening the sketch. - ViewRestore Camera: if
true
the camera position is saved before opening the sketch, and is restored after closing it. - ViewShow Links: if
true
all objects used in links to external geometry are shown when opening the sketch. - ViewShow Support: if
true
all objects this sketch is attached to are shown when opening the sketch.
Scripting
See also: FreeCAD Scripting Basics, and scripted objects.
See Part Feature for the general information.
A Sketcher SketchObject is created with the addObject()
method of the document.
import FreeCAD as App
doc = App.newDocument()
obj = App.ActiveDocument.addObject("Sketcher::SketchObject", "Name")
obj.Label = "Custom label"
- General: Create sketch, Edit sketch, Map sketch to face, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch, Leave sketch, View sketch, View section, Toggle grid, Toggle snap, Configure rendering order, Stop operation
- Sketcher geometries: Point, Line, Arc, Arc by 3 points, Circle, Circle by 3 points, Ellipse, Ellipse by 3 points, Arc of ellipse, Arc of hyperbola, Arc of parabola, B-spline by control points, Periodic B-spline by control points, B-spline by knots, Periodic B-spline by knots, Polyline, Rectangle, Centered rectangle, Rounded rectangle, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Regular polygon, Slot, Fillet, Corner-preserving fillet, Trim, Extend, Split, External geometry, Carbon copy, Toggle construction geometry
- Sketcher constraints:
- Geometric constraints: Coincident, Point on object, Vertical, Horizontal, Parallel, Perpendicular, Tangent, Equal, Symmetric, Block
- Dimensional constraints: Lock, Horizontal distance, Vertical distance, Distance, Radius or weight, Diameter, Auto radius/diameter, Angle, Refraction (Snell's law)
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint
- Sketcher tools: Select unconstrained DoF, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide internal geometry, Select origin, Select horizontal axis, Select vertical axis, Symmetry, Clone, Copy, Move, Rectangular array, Remove axes alignment, Delete all geometry, Delete all constraints
- Sketcher B-spline tools: Show/hide B-spline degree, Show/hide B-spline control polygon, Show/hide B-spline curvature comb, Show/hide B-spline knot multiplicity, Show/hide B-spline control point weight, Convert geometry to B-spline, Increase B-spline degree, Decrease B-spline degree, Increase knot multiplicity, Decrease knot multiplicity, Insert knot, Join curves
- Sketcher virtual space: Switch virtual space
- Additional: Sketcher Dialog, Preferences, Sketcher scripting
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub