Surface ExtendFace: Difference between revisions
(→Usage: The object could be created with the Surface Workbench but it could also be any other object, for example, created with Part or PartDesign.) |
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{{Docnav |
{{Docnav |
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|[[Surface_Sections|Sections]] |
|[[Surface_Sections|Sections]] |
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|[[Surface_CurveOnMesh|CurveOnMesh]] |
|[[Surface_CurveOnMesh|CurveOnMesh]] |
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|[[ |
|[[Surface_Workbench|Surface]] |
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|IconL=Surface_Sections.svg |
|IconL=Surface_Sections.svg |
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|IconC=Workbench_Surface.svg |
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{{GuiCommand |
{{GuiCommand |
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|Name=Surface ExtendFace |
|Name=Surface ExtendFace |
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|MenuLocation=Surface → Extend face |
|MenuLocation=Surface → Extend face |
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|Workbenches=[[ |
|Workbenches=[[Surface_Workbench|Surface]] |
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|Version=0.17 |
|Version=0.17 |
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}} |
}} |
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==Description== |
==Description== <!--T:3--> |
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{{Button|[[File:Surface_ExtendFace.svg|16px]] [[ |
{{Button|[[File:Surface_ExtendFace.svg|16px]] [[Surface_ExtendFace|Surface ExtendFace]]}} extrapolates an existing face or surface at its boundaries with its local U and V parameters. |
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{{Caption|Left: original face. Right: extended face.}} |
{{Caption|Left: original face. Right: extended face.}} |
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==Usage== |
==Usage== <!--T:6--> |
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# Make sure you have an object that has faces. The object could be created with the [[File:Workbench_Surface.svg|24px]] [[ |
# Make sure you have an object that has faces. The object could be created with the [[File:Workbench_Surface.svg|24px]] [[Surface_Workbench|Surface Workbench]] but it could also be any other object, for example, created with [[File:Workbench_Part.svg|24px]] [[Part_Workbench|Part]] or [[File:Workbench_PartDesign.svg|24px]] [[PartDesign_Workbench|PartDesign]]. |
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# Select the face to extend by clicking on it on the [[3D_view|3D view]]. |
# Select the face to extend by clicking on it on the [[3D_view|3D view]]. |
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# Press {{Button|[[File:Surface_ExtendFace.svg|16px]] [[Surface_ExtendFace|Extend face]]}}. |
# Press {{Button|[[File:Surface_ExtendFace.svg|16px]] [[Surface_ExtendFace|Extend face]]}}. |
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==Options== |
==Options== <!--T:8--> |
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<!--T:9--> |
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This command doesn't have any options. Either it works with the selection or not. |
This command doesn't have any options. Either it works with the selection or not. |
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==Properties== |
==Properties== <!--T:10--> |
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A [[Surface_ExtendFace|Surface Extend]] object ({{incode|Surface::Extend}} class) is derived from the basic [[Part_Feature|Part Feature]] ({{incode|Part::Feature}} class, through the {{incode|Part::Spline}} subclass), therefore it shares all the latter's properties. |
A [[Surface_ExtendFace|Surface Extend]] object ({{incode|Surface::Extend}} class) is derived from the basic [[Part_Feature|Part Feature]] ({{incode|Part::Feature}} class, through the {{incode|Part::Spline}} subclass), therefore it shares all the latter's properties. |
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In addition to the properties described in [[Part_Feature|Part Feature]], the Surface Filling has the following properties in the [[ |
In addition to the properties described in [[Part_Feature|Part Feature]], the Surface Filling has the following properties in the [[Property_editor|property editor]]. |
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=== Data === |
=== Data === <!--T:13--> |
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{{TitleProperty|Base}} |
{{TitleProperty|Base}} |
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* {{PropertyData|Face|LinkSub}}: the subelement from an object that will be extended; it must be a face. |
* {{PropertyData|Face|LinkSub}}: the subelement from an object that will be extended; it must be a face. |
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* {{PropertyData|Tolerance|FloatConstraint}}: it defaults to {{Value|0.1}}. |
* {{PropertyData|Tolerance|FloatConstraint}}: it defaults to {{Value|0.1}}. |
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* {{PropertyData|Extend UNeg|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local U parameter that will be extended in the negative direction. |
* {{PropertyData|Extend UNeg|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local U parameter that will be extended in the negative direction. |
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* {{PropertyData|Extend UPos|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local U parameter that will be extended in the positive direction. |
* {{PropertyData|Extend UPos|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local U parameter that will be extended in the positive direction. |
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* {{PropertyData|Extend USymetric|Bool}}: it defaults to {{TRUE}}, in which case {{PropertyData|Extend UNeg}} and {{PropertyData|Extend UPos}} will have the same value. |
* {{PropertyData|Extend USymetric|Bool}}: it defaults to {{TRUE}}, in which case {{PropertyData|Extend UNeg}} and {{PropertyData|Extend UPos}} will have the same value. |
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* {{PropertyData|Extend VNeg|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local V that will be extended in the negative direction. |
* {{PropertyData|Extend VNeg|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local V that will be extended in the negative direction. |
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* {{PropertyData|Extend VPos|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local V direction that will be extended in the positive direction. |
* {{PropertyData|Extend VPos|FloatConstraint}}: it defaults to {{Value|0.05}}. The ratio of the local V direction that will be extended in the positive direction. |
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* {{PropertyData|Extend VSymetric|Bool}}: it defaults to {{TRUE}}, in which case {{PropertyData|Extend VNeg}} and {{PropertyData|Extend VPos}} will have the same value. |
* {{PropertyData|Extend VSymetric|Bool}}: it defaults to {{TRUE}}, in which case {{PropertyData|Extend VNeg}} and {{PropertyData|Extend VPos}} will have the same value. |
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* {{PropertyData|SampleU|IntegerConstraint}}: it defaults to {{Value|32}}. |
* {{PropertyData|SampleU|IntegerConstraint}}: it defaults to {{Value|32}}. |
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* {{PropertyData|SampleV|IntegerConstraint}}: it defaults to {{Value|32}}. |
* {{PropertyData|SampleV|IntegerConstraint}}: it defaults to {{Value|32}}. |
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=== View === |
=== View === <!--T:19--> |
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<!--T:20--> |
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{{TitleProperty|Base}} |
{{TitleProperty|Base}} |
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* {{PropertyView|Control Points|Bool}}: it defaults to {{FALSE}}; if set to {{TRUE}}, it will show an overlay with the control points of the surface. |
* {{PropertyView|Control Points|Bool}}: it defaults to {{FALSE}}; if set to {{TRUE}}, it will show an overlay with the control points of the surface. |
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== Scripting == |
== Scripting == <!--T:22--> |
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{{Emphasis|See also:}} [[FreeCAD_Scripting_Basics|FreeCAD Scripting Basics]]. |
{{Emphasis|See also:}} [[FreeCAD_Scripting_Basics|FreeCAD Scripting Basics]]. |
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The Surface Extend tool can be used in [[ |
The Surface Extend tool can be used in [[Macros|macros]] and from the [[Python|Python]] console by adding the {{incode|Surface::Extend}} object. |
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* The face to extend must be assigned as a [[LinkSub|LinkSub]] to the {{incode|Face}} property of the object. It must contain only a single face. |
* The face to extend must be assigned as a [[LinkSub|LinkSub]] to the {{incode|Face}} property of the object. It must contain only a single face. |
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{{Docnav |
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|[[Surface_Sections|Sections]] |
|[[Surface_Sections|Sections]] |
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|[[Surface_CurveOnMesh|CurveOnMesh]] |
|[[Surface_CurveOnMesh|CurveOnMesh]] |
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|[[ |
|[[Surface_Workbench|Surface]] |
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|IconL=Surface_Sections.svg |
|IconL=Surface_Sections.svg |
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|IconR=Surface_CurveOnMesh.svg |
|IconR=Surface_CurveOnMesh.svg |
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Latest revision as of 14:17, 16 August 2021
Surface ExtendFace |
Menu location |
---|
Surface → Extend face |
Workbenches |
Surface |
Default shortcut |
None |
Introduced in version |
0.17 |
See also |
None |
Description
Surface ExtendFace extrapolates an existing face or surface at its boundaries with its local U and V parameters.
Left: original face. Right: extended face.
Usage
- Make sure you have an object that has faces. The object could be created with the Surface Workbench but it could also be any other object, for example, created with Part or PartDesign.
- Select the face to extend by clicking on it on the 3D view.
- Press Extend face.
Options
This command doesn't have any options. Either it works with the selection or not.
Properties
A Surface Extend object (Surface::Extend
class) is derived from the basic Part Feature (Part::Feature
class, through the Part::Spline
subclass), therefore it shares all the latter's properties.
In addition to the properties described in Part Feature, the Surface Filling has the following properties in the property editor.
Data
Base
- DataFace (
LinkSub
): the subelement from an object that will be extended; it must be a face. - DataTolerance (
FloatConstraint
): it defaults to0.1
.
- DataExtend UNeg (
FloatConstraint
): it defaults to0.05
. The ratio of the local U parameter that will be extended in the negative direction. - DataExtend UPos (
FloatConstraint
): it defaults to0.05
. The ratio of the local U parameter that will be extended in the positive direction. - DataExtend USymetric (
Bool
): it defaults totrue
, in which case DataExtend UNeg and DataExtend UPos will have the same value.
- DataExtend VNeg (
FloatConstraint
): it defaults to0.05
. The ratio of the local V that will be extended in the negative direction. - DataExtend VPos (
FloatConstraint
): it defaults to0.05
. The ratio of the local V direction that will be extended in the positive direction. - DataExtend VSymetric (
Bool
): it defaults totrue
, in which case DataExtend VNeg and DataExtend VPos will have the same value.
- DataSampleU (
IntegerConstraint
): it defaults to32
. - DataSampleV (
IntegerConstraint
): it defaults to32
.
View
Base
- ViewControl Points (
Bool
): it defaults tofalse
; if set totrue
, it will show an overlay with the control points of the surface.
Scripting
See also: FreeCAD Scripting Basics.
The Surface Extend tool can be used in macros and from the Python console by adding the Surface::Extend
object.
- The face to extend must be assigned as a LinkSub to the
Face
property of the object. It must contain only a single face.
import FreeCAD as App
import Draft
doc = App.newDocument()
a = App.Vector(-20, -20, 0)
b = App.Vector(-18, 25, 0)
c = App.Vector(60, 26, 0)
d = App.Vector(33, -20, 0)
points = [a, App.Vector(-20, -8, 0), b, c,
App.Vector(37, 4, 0), d,
App.Vector(-2, -18, 0), a]
obj = Draft.make_bspline(points)
doc.recompute()
if App.GuiUp:
obj.ViewObject.Visibility = False
surf = doc.addObject("Surface::Filling", "Surface")
surf.BoundaryEdges = [(obj, "Edge1")]
doc.recompute()
# ---------------------------------------------------------
points_spl = [App.Vector(-10, 0, 2),
App.Vector(4, 0, 7),
App.Vector(18, 0, -5),
App.Vector(25, 0, 0),
App.Vector(30, 0, 0)]
aux_edge = Draft.make_bspline(points_spl)
doc.recompute()
surf.UnboundEdges = [(aux_edge, "Edge1")]
doc.recompute()
# ---------------------------------------------------------
surf_extended = doc.addObject("Surface::Extend", "Surface")
surf_extended.Face = [surf, "Face1"]
doc.recompute()
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