Sketcher ConstrainPerpendicular/es: Difference between revisions
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<span id="Description"></span> |
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==Descripción== |
==Descripción== |
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The |
The [[Image:Sketcher_ConstrainPerpendicular.svg|24px]] [[Sketcher_ConstrainPerpendicular|Sketcher ConstrainPerpendicular]] tool constrains two lines to be perpendicular, or two edges, or an edge and an axis, to be perpendicular at their intersection. Lines are treated as infinite, and open curves are virtually extended as well. The constraint can also connect two edges, forcing them to be perpendicular at the joint. |
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<span id="Usage"></span> |
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==Utilización== |
==Utilización== |
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See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]]. |
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There are four different ways the constraint can be applied: |
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# between two curves (available not for all curves) |
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# between two endpoints of a curve |
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⚫ | |||
# between two curves at user-defined point |
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===[[Sketcher_Workbench#Continue_modes|Continue mode]]=== |
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To apply perpendicular constraint, one should the follow the steps: |
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* Select two or three entities in the sketch. |
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* Invoke the constraint by clicking its icon on the toolbar, or selecting the menu item, or using keyboard shortcut. |
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# Make sure there is no selection. |
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===Between two curves (direct perpendicularity)=== |
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# There are several ways to invoke the tool: |
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#* Press the {{Button|[[Image:Sketcher_ConstrainPerpendicular.svg|16px]] [[Sketcher_ConstrainPerpendicular|Constrain perpendicular]]}} button. |
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#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainPerpendicular.svg|16px]] Constrain perpendicular}} 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_ConstrainPerpendicular.svg|16px]] Constrain perpendicular}} option from the context menu. |
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#* Use the keyboard shortcut: {{KEY|N}}. |
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# The cursor changes to a cross with the tool icon. |
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# Do one of the following: |
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#* Select two edges. One of the edges must be a straight line or an axis. The other can be any edge except a B-spline. |
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#* Select a point and two edges (in that order). |
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#* Select an edge, a point and another edge (idem). |
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# A Perpendicular constraint is added. If a point and two edges have been selected, up to two [[Sketcher_ConstrainPointOnObject|Point on object constraints]] can also be added. See [[#Between_two_edges_at_point|Examples]]. |
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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=== |
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[[Image:Sketcher ConsraintPerpendicular mode1.png|600px]] |
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# Do one of the following: |
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Two curves will be made perpendicular at point of their intersection (either real, or of curves' extensions), and the point of intersection will be implicit. This mode is applied if two curves were selected. |
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#* Select two edges (see above). |
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#* Select two endpoints belonging to different edges. |
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⚫ | |||
#* Select a point and two edges (idem). |
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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_ConstrainPerpendicular.svg|16px]] Constrain perpendicular}} option from the context menu. |
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# A Perpendicular constraint is added. If a point and two edges have been selected, up to two [[Sketcher_ConstrainPointOnObject|Point on object constraints]] can also be added. See [[#Between_two_edges_at_point|Examples]]. |
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==Examples== |
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'''Accepted selection:''' |
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* line + line, circle, arc |
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* circle, arc + circle, arc |
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If direct perpendicularity between selected curves is not supported (e.g. between a line and an ellipse), a helper point will be added to sketch automatically, and perpendicular-via-point will be applied. |
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===Between two edges=== |
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Unlike for tangency, it is perfectly fine to reconstruct the point of perpendicularity by creating a point and constraining it to lie on both curves (thus constraining the point to the intersection). |
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[[Image:Sketcher_ConsraintPerpendicular_mode1.png|400px]] |
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⚫ | |||
The two edges are made perpendicular at their (virtual) intersection. If one of the edges is a [[Sketcher_Workbench#Sketcher_CompCreateConic|conic]], a [[Sketcher_CreatePoint|Point object]] that has a [[Sketcher_ConstrainPointOnObject|Point on object constraint]] with both (extended) edges is added. |
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[[Image:Sketcher ConsraintPerpendicular mode2.png|600px]] |
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⚫ | |||
In this mode, the endpoints are made coincident, and the joint is made to be right angle. This mode is applied when two endpoints of two curves were selected. |
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[[Image:Sketcher_ConsraintPerpendicular_mode2.png|400px]] |
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'''Accepted selection:''' |
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* endpoint of line/arc/arc-of-ellipse + endpoint of line/arc/arc-of-ellipse (i.e., two endpoints of any two curves) |
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The endpoints are made coincident, and the edges are made perpendicular at that point. |
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⚫ | |||
⚫ | |||
[[Image:Sketcher ConsraintPerpendicular mode3.png|600px]] |
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[[Image:Sketcher_ConsraintPerpendicular_mode3.png|400px]] |
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⚫ | |||
⚫ | |||
'''Accepted selection:''' |
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* line, circle, arc, ellipse, arc-of-ellipse + endpoint of line/arc/arc-of-ellipse (i.e., any curve + endpoint of any curve) |
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⚫ | |||
[[Image:Sketcher_ConsraintPerpendicular_mode4.png|400px]] |
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⚫ | |||
The two edges are made perpendicular at a given point. The point can be any point, e.g. the center of a circle, the endpoint of an edge, or the origin, it can belong to one of the edges, and it can also be a [[Sketcher_CreatePoint|Point object]]. If required [[Sketcher_ConstrainPointOnObject|Point on object constraint(s)]] are added to ensure the point lies on both (extended) edges. These additional constraints are called [[Sketcher_helper_constraint|helper constraints]]. |
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[[Image:Sketcher ConsraintPerpendicular mode4.png|600px]] |
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In this mode, two curves are made perpendicular, and the point of perpendicularity is tracked. This mode is applied when two curves and a point were selected. |
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'''Accepted selection:''' |
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* any line/curve + any line/curve + any point |
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"Any point" can be a lone point, or a point of something, e.g. a center of a circle, an endpoint of an arc, or the origin. |
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For the constraint to work correctly, the point must be on both curves. So, as the constraint is invoked, the point will be automatically constrained onto both curves ([[Sketcher_helper_constraint|helper constraints]] will be added, if necessary), and the curves will be forced perpendicular at the point. These [[Sketcher_helper_constraint|helper constraints]] are plain regular constraints. They can be added manually, or deleted. |
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Compared to direct perpendicular, this constraint is slower, because there are mode degrees of freedom involved, but it supports ellipses. |
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The placement of the point before the constraint is applied is a hint for the solver for where the perpendicularity should be. |
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==Scripting== |
==Scripting== |
Latest revision as of 13:13, 24 April 2024
Croquizador RestringirPerpendicular |
Ubicación en el Menú |
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Croquizador → Restricciones del Croquizador → Perpendicular |
Entornos de trabajo |
Croquizador |
Atajo de teclado por defecto |
N |
Introducido en versión |
- |
Ver también |
Croquizador Restringir Ángulo |
Descripción
The Sketcher ConstrainPerpendicular tool constrains two lines to be perpendicular, or two edges, or an edge and an axis, to be perpendicular at their intersection. Lines are treated as infinite, and open curves are virtually extended as well. The constraint can also connect two edges, forcing them to be perpendicular at the joint.
Utilización
See also: Drawing aids.
Continue mode
- Make sure there is no selection.
- There are several ways to invoke the tool:
- Press the Constrain perpendicular button.
- Select the Sketch → Sketcher constraints → Constrain perpendicular option from the menu.
- introduced in version 1.0: Right-click in the 3D view and select the Constrain → Constrain perpendicular option from the context menu.
- Use the keyboard shortcut: N.
- The cursor changes to a cross with the tool icon.
- Do one of the following:
- Select two edges. One of the edges must be a straight line or an axis. The other can be any edge except a B-spline.
- Select a point and two edges (in that order).
- Select an edge, a point and another edge (idem).
- A Perpendicular constraint is added. If a point and two edges have been selected, up to two Point on object constraints can also be added. See Examples.
- Optionally keep creating constraints.
- To finish, right-click or press Esc, or start another geometry or constraint creation tool.
Run-once mode
- Do one of the following:
- Select two edges (see above).
- Select two endpoints belonging to different edges.
- Select an edge and the endpoint of another edge (in any order).
- Select a point and two edges (idem).
- 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 perpendicular option from the context menu.
- A Perpendicular constraint is added. If a point and two edges have been selected, up to two Point on object constraints can also be added. See Examples.
Examples
Between two edges
The two edges are made perpendicular at their (virtual) intersection. If one of the edges is a conic, a Point object that has a Point on object constraint with both (extended) edges is added.
Between two endpoints
The endpoints are made coincident, and the edges are made perpendicular at that point.
Between edge and endpoint
The endpoint of one edge is constrained to lie on the other edge, and the edges are made perpendicular at that point.
Between two edges at point
The two edges are made perpendicular at a given point. The point can be any point, e.g. the center of a circle, the endpoint of an edge, or the origin, it can belong to one of the edges, and it can also be a Point object. If required Point on object constraint(s) are added to ensure the point lies on both (extended) edges. These additional constraints are called helper constraints.
Scripting
Perpendicular Constraint can be created from macros and from the python console by using the following:
# direct perpendicularity
Sketch.addConstraint(Sketcher.Constraint('Perpendicular',icurve1,icurve2))
# point-to-point perpendicularity
Sketch.addConstraint(Sketcher.Constraint('Perpendicular',icurve1,pointpos1,icurve2,pointpos2))
# point-to-curve perpendicularity
Sketch.addConstraint(Sketcher.Constraint('Perpendicular',icurve1,pointpos1,icurve2))
# perpendicular-via-point (plain constraint, helpers are not added automatically)
Sketch.addConstraint(Sketcher.Constraint('PerpendicularViaPoint',icurve1,icurve2,geoidpoint,pointpos))
where:
Sketch
is a sketch objecticurve1
,icurve2
are two integers identifying the curves to be made perpendicular. The integers are indexes in the sketch (the value, returned bySketch.addGeometry
).pointpos1
,pointpos2
should be1
for start point and2
for end point.geoidpoint
andpointpos
in PerpendicularViaPoint are the indexes specifying the point of perpendicularity.
The Sketcher scripting page explains the values which can be used for icurve1
, icurve2
, pointpos1
, pointpos2
and geoidpoint
, and contains further examples on how to create constraints from Python scripts.
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