Sketcher ConstrainBlock: Difference between revisions
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{{Docnav |
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{{Docnav|[[Sketcher_ConstrainSymmetric|Symmetric]]|[[Sketcher ConstrainLock|Lock]]|[[Sketcher_Workbench|Sketcher]]|IconL=Constraint_Symmetric.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainLock.png}} |
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|[[Sketcher_ConstrainSymmetric|Symmetric]] |
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|[[Sketcher_ConstrainSnellsLaw|Refraction (Snell's law)]] |
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{{GuiCommand |
{{GuiCommand |
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|Name=Sketcher ConstrainBlock |
|Name=Sketcher ConstrainBlock |
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|MenuLocation=Sketch → Sketcher constraints → Constrain |
|MenuLocation=Sketch → Sketcher constraints → Constrain block |
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|Workbenches=[[ |
|Workbenches=[[Sketcher_Workbench|Sketcher]] |
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|Shortcut={{KEY|K}} {{KEY|B}} |
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|Version=0.17 |
|Version=0.17 |
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The [[Image:Sketcher_ConstrainBlock.svg|24px]] [[Sketcher_ConstrainBlock|Sketcher ConstrainBlock]] tool blocks edges in place with a single constraint. It is mainly intended for [[Sketcher_CreateBSpline|B-splines]], which can be difficult to fully constrain otherwise. |
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The block constraint only affects the freely movable parts of an edge. Blocked edges can have other constraints, and applying additional constraints to a blocked edge can modify it. |
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==Usage== <!--T:5--> |
==Usage== <!--T:5--> |
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See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]]. |
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===[[Sketcher_Workbench#Continue_modes|Continue mode]]=== <!--T:18--> |
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# Make sure there is no selection. |
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# Select an element to constrain; |
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# There are several ways to invoke the tool: |
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# Press the {{KEY|[[File:Sketcher ConstrainBlock.png|24px]] '''Constrain Block'''}} button. |
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#* Press the {{Button|[[Image:Sketcher_ConstrainBlock.svg|16px]] [[Sketcher_ConstrainBlock|Constrain block]]}} button. |
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'''Note:''' step 1 and 2 can be reversed. |
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#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainBlock.svg|16px]] Constrain block}} option from the menu. |
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#* {{Version|1.0}}: Right-click in the [[3D_view|3D view]] and select the {{MenuCommand|Constrain → [[Image:Sketcher_ConstrainBlock.svg|16px]] Constrain block}} option from the context menu. |
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#* Use the keyboard shortcut: {{KEY|K}} then {{KEY|B}}. |
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# The cursor changes to a cross with the tool icon. |
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# Select a single edge. |
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# A constraint is added. |
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# Optionally keep creating constraints. |
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# To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool. |
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===Run-once mode=== <!--T:19--> |
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{{Docnav|[[Sketcher_ConstrainSymmetric|Symmetric]]|[[Sketcher ConstrainLock|Lock]]|[[Sketcher_Workbench|Sketcher]]|IconL=Constraint_Symmetric.png|IconC=Workbench_Sketcher.svg|IconR=Sketcher_ConstrainLock.png}} |
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# Select one or more edges. |
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{{Sketcher Tools navi}} |
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# Invoke the tool as explained above, or with the following additional option: |
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#* {{Version|1.0}}: Right-click in the [[3D_view|3D view]] and select the {{MenuCommand|[[Image:Sketcher_ConstrainBlock.svg|16px]] Constrain block}} option from the context menu. |
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# Depending on the selection one or more constraints are added. |
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== Scripting == <!--T:14--> |
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{{Code|code=Sketch.addConstraint(Sketcher.Constraint('Block', Edge))}} |
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The [[Sketcher_scripting|Sketcher scripting]] page explains the values which can be used for {{incode|Edge}} and contains further examples on how to create constraints from Python scripts. |
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|[[Sketcher_ConstrainSymmetric|Symmetric]] |
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|[[Sketcher_ConstrainSnellsLaw|Refraction (Snell's law)]] |
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|[[Sketcher_Workbench|Sketcher]] |
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|IconL=Constraint_Symmetric.svg |
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Latest revision as of 15:14, 11 May 2024
Sketcher ConstrainBlock |
Menu location |
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Sketch → Sketcher constraints → Constrain block |
Workbenches |
Sketcher |
Default shortcut |
K B |
Introduced in version |
0.17 |
See also |
Sketcher ConstrainLock |
Description
The Sketcher ConstrainBlock tool blocks edges in place with a single constraint. It is mainly intended for B-splines, which can be difficult to fully constrain otherwise.
The block constraint only affects the freely movable parts of an edge. Blocked edges can have other constraints, and applying additional constraints to a blocked edge can modify it.
Usage
See also: Drawing aids.
Continue mode
- Make sure there is no selection.
- There are several ways to invoke the tool:
- Press the Constrain block button.
- Select the Sketch → Sketcher constraints → Constrain block option from the menu.
- introduced in version 1.0: Right-click in the 3D view and select the Constrain → Constrain block option from the context menu.
- Use the keyboard shortcut: K then B.
- The cursor changes to a cross with the tool icon.
- Select a single edge.
- A constraint is added.
- Optionally keep creating constraints.
- To finish, right-click or press Esc, or start another geometry or constraint creation tool.
Run-once mode
- Select one or more edges.
- Invoke the tool as explained above, or with the following additional option:
- introduced in version 1.0: Right-click in the 3D view and select the Constrain block option from the context menu.
- Depending on the selection one or more constraints are added.
Scripting
Sketch.addConstraint(Sketcher.Constraint('Block', Edge))
The Sketcher scripting page explains the values which can be used for Edge
and contains further examples on how to create constraints from Python scripts.
Sketcher
- 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
User documentation
- 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
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- Hubs: User hub, Power users hub, Developer hub