Sketcher ConstrainAngle/ro: Difference between revisions

From FreeCAD Documentation
(Created page with "==Script==")
(Updating to match new version of source page)
 
(30 intermediate revisions by 3 users not shown)
Line 1: Line 1:
<languages/>
<languages/>

{{Docnav
|[[Sketcher_ConstrainDiameter|Diameter]]
|[[Sketcher_ConstrainLock|Lock]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainDiameter.svg
|IconR=Sketcher_ConstrainLock.svg
|IconC=Workbench_Sketcher.svg
}}

<div class="mw-translate-fuzzy">
{{GuiCommand
{{GuiCommand
|Name=Constraint InternalAngle
|Name=Constraint InternalAngle
Line 7: Line 18:
|SeeAlso=[[Sketcher ConstrainDistance|Constrain distance]], [[Sketcher ConstrainPerpendicular|Constraint Perpendicular]]
|SeeAlso=[[Sketcher ConstrainDistance|Constrain distance]], [[Sketcher ConstrainPerpendicular|Constraint Perpendicular]]
}}
}}
</div>


==Description==
==Description==
Angle constraint is a [[Sketcher_Workbench#Sketcher Constraints|datum constraint]] intended to fix angles in sketch. It is capable of setting slopes of individual lines, angles between lines, angles of intersections of curves, and angle spans of circular arcs.


<div class="mw-translate-fuzzy">
==Descriere==
Constrângerea de unghi este o [[Sketcher_Workbench#Sketcher Constraints|datum constraint]] având ca scop fixarea unghiurilor unei schițe. Este capabilă să definească pantele liniilor individuale, unghiurile dintre linii, unghiurile de intersecții ale curbelor și deschiderile unghiulare ale arcurilor circulare.
</div>

<span id="Usage"></span>
<div class="mw-translate-fuzzy">
==Cum se folosește==
==Cum se folosește==
Sunt patru căi diferite pentru ca această constrângere să fie aplicată:
There are four different ways the constraint can be applied:
# Liniilor individuale
# to individual lines
# între linii
# between lines
# asupra interesecțiilor curbelor
# to intersections of curves
# Arcurilor de cercuri
# to arcs of circles
</div>


See also: [[Sketcher_Workbench#Drawing_aids|Drawing aids]].
To apply angle constraint, one should the follow the steps:
* Select one, two or three entities in the sketch. The mode will be chosen depending on the selection.
* Invoke the constraint by clicking its icon on the toolbar, or selecting the menu item, or using keyboard shortcut. A datum edit dialog box pops up.
* Modify the angle if necessary. The angle can be entered as an expression that will be evaluated and the result will be stored. Click OK.


===[[Sketcher_Workbench#Continue_modes|Continue mode]]===
As with any datum constraint, it is possible to change the angle value later by double-clicking the constraint in constraint list or 3d view. Entering a negative value will cause the angle direction to flip.


# Make sure there is no selection.
==Constraint modes==
# There are several ways to invoke the tool:
===line slope angle===
#* {{Version|1.0}}: If the {{MenuCommand|Dimensioning constraints}} [[Sketcher_Preferences#General|preference]] is set to {{Value|Single tool}} (default): press the down arrow to the right of the {{Button|[[Image:Sketcher_Dimension.svg||x16px]][[Image:Toolbar_flyout_arrow.svg|x16px]]}} button and select the {{MenuCommand|[[Image:Sketcher_ConstrainAngle.svg|16px]] Constrain angle}} option from the dropdown.
'''Accepted selection:''' line
#* If this preference has a different value (and in {{VersionMinus|0.21}}): press the {{Button|[[Image:Sketcher_ConstrainAngle.svg|16px]] [[Sketcher_ConstrainAngle|Constrain angle]]}} button.
#* Select the {{MenuCommand|Sketch → Sketcher constraints → [[Image:Sketcher_ConstrainAngle.svg|16px]] Constrain angle}} option from the menu.
#* {{Version|1.0}}: Right-click in the [[3D_view|3D view]] and select the {{MenuCommand|Dimension → [[Image:Sketcher_ConstrainAngle.svg|16px]] Constrain angle}} option from the context menu.
#* Use the keyboard shortcut: {{KEY|K}} then {{KEY|A}}.
# The cursor changes to a cross with the tool icon.
# Do one of the following:
#* Select two lines.
#* Select a point and two edges (in that order).
#* Select an edge, a point and an edge (idem).
# If a [[Sketcher_ToggleDrivingConstraint|driving dimensional constraint]] is created, depending on the [[Sketcher_Preferences#Display|preferences]], a dialog opens to [[Sketcher_Workbench#Edit_constraints|edit its value]]. A negative value will reverse the angle direction.
# An Angle constraint is added. If a point and two edges have been selected, up to two [[Sketcher_ConstrainPointOnObject|Point to object constraints]] can also be added. See [[#Between_two_edges_at_point|Examples]].
# Optionally keep creating constraints.
# To finish, right-click or press {{KEY|Esc}}, or start another geometry or constraint creation tool.


===Run-once mode===
[[Image:Sketcher ConsraintAngle mode1.png|600px]]


# Do one of the following:
The constraint sets the polar angle of line's direction. It is the angle between the line and X axis of the sketch.
#* Select a single line.
#* Select a single circular arc.
#* Select two lines.
#* Select a point and two edges (in any order).
# Invoke the tool as explained above.
# Optionally [[Sketcher_Workbench#Edit_constraints|edit the constraint value]].
# An Angle 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]].


==Examples==
===arc span (v0.15)===
'''Accepted selection:''' arc of circle


===Single line===
[[Image:Sketcher ConsraintAngle mode2.png|600px]]


[[Image:Sketcher_ConsraintAngle_mode1.png|400px]]
In this mode, the constraint fixes angular span of a circular arc.


<div class="mw-translate-fuzzy">
===between lines===
Constrângerea stabilește unghiul polar al direcției liniei. Este unghiul dintre linie și axa X a schiței.
'''Accepted selection:''' line + line
</div>


===Single circular arc===
[[Image:Sketcher ConsraintAngle mode3.png|600px]]


[[Image:Sketcher_ConsraintAngle_mode2.png|400px]]
In this mode, the constraint sets the angle between two lines. It is not required that the lines intersect.


<div class="mw-translate-fuzzy">
===between curves at intersection (angle-via-point) (v0.15)===
In acest mod, constrângerea fixată unghiulară a unui arc circular.
'''Accepted selection:''' any line/curve + any line/curve + any point
</div>


===Between two lines===
[[Image:Sketcher ConsraintAngle mode4.png|600px]]


[[Image:Sketcher_ConsraintAngle_mode3.png|400px]]
In this mode, angle between two curves is constrained at the point of their intersection. The intersection point can be on curves' extensions. The point should be specified explicitly, since curves typically intersect in more than one point.


<div class="mw-translate-fuzzy">
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 angle between curves will be constrained at the point. These [[Sketcher helper constraint|helper constraints]] are plain regular constraints. They can be added manually, or deleted. There are no helper constraints on the example picture above, because the point selected is already the intersection of curves.
În acest mod, constrângerea stabilește unghiul dintre două linii. Nu este necesar ca liniile să se intersecteze.
</div>


===Between two edges at point===

[[Image:Sketcher_ConsraintAngle_mode4.png|400px]]

The angle between the two edges at a given point is fixed. 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 either or both 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]].

<span id="Scripting"></span>
==Script==
==Script==


<div class="mw-translate-fuzzy">
Angle Constraint can be created from [[macros]] and from the python console by using the following:
Constrângerea Unghiulară poate fi creată cu [[macros]] și de la consola Python console utilizând următoarele:
</div>
{{Code|code=
{{Code|code=
# line slope angle
# line slope angle
Line 72: Line 120:
Sketch.addConstraint(Sketcher.Constraint('AngleViaPoint',icurve1,icurve2,geoidpoint,pointpos,angle))
Sketch.addConstraint(Sketcher.Constraint('AngleViaPoint',icurve1,icurve2,geoidpoint,pointpos,angle))
}}
}}
<div class="mw-translate-fuzzy">
where:
unde:
:* <tt>Sketch</tt> is a sketch object
:* <tt>Sketch</tt> este un obiect tip schiță
:* <tt>iline, iline1, iline2</tt> are integers specifying the lines by their ordinal numbers in <tt>Sketch</tt>.
:* <tt>iline, iline1, iline2</tt> sunt numere întregi specificând liniile printr-un număr ordinal in <tt>Sketch</tt>.
:* <tt>pointpos1, pointpos2</tt> should be 1 for start point and 2 for end point. The choice of endpoints allows to set internal angle (or external), and it affects how the constraint is drawn on the screen.
:* <tt>pointpos1, pointpos2</tt> should be 1 for start point and 2 for end point. The choice of endpoints allows to set internal angle (or external), and it affects how the constraint is drawn on the screen.
:* <tt>geoidpoint</tt> and <tt>pointpos</tt> in AngleViaPoint are the indexes specifying the point of intersection.
:* <tt>geoidpoint</tt> and <tt>pointpos</tt> in AngleViaPoint are the indexes specifying the point of intersection.
:* <tt>angle</tt> is the angle value in radians. The angle is counted between tangent vectors in counterclockwise direction. Tangent vectors are pointing from start to end for the lines (or vice versa if ending point is supplied in angle between lines mode), and along counterclockwise direction for circles, arcs and ellipses. Quantity is also accepted as an angle (e.g. <tt>App.Units.Quantity('45 deg')</tt>)
:* <tt>angle</tt> este valoarea unghiului în radiani. Unghiul este contorizat între vectorii tangenți în sens antiorar. Vectorii tangenți indică de la început până la capăt liniile (sau invers, dacă punctul final este indicat liniar) și în sens antiorar pentru cercuri, arce și elipse. Cantitatea este, de asemenea, acceptată ca un unghi (de exemplu<tt>App.Units.Quantity('45 deg')</tt>)
</div>

The [[Sketcher_scripting|Sketcher scripting]] page explains the values which can be used for {{incode|iline}}, {{incode|iline1}}, {{incode|iline2}}, {{incode|pointpos1}}, {{incode|pointpos2}}, {{incode|geoidpoint}} and {{incode|pointpos}} and contains further examples on how to create constraints from Python scripts.


{{Docnav
|[[Sketcher_ConstrainDiameter|Diameter]]
|[[Sketcher_ConstrainLock|Lock]]
|[[Sketcher_Workbench|Sketcher]]
|IconL=Sketcher_ConstrainDiameter.svg
|IconR=Sketcher_ConstrainLock.svg
|IconC=Workbench_Sketcher.svg
}}


{{Sketcher_Tools_navi{{#translation:}}}}
{{clear}}
{{Userdocnavi{{#translation:}}}}

Latest revision as of 15:19, 23 April 2024

Other languages:

Constraint InternalAngle

Menu location
Sketch → Sketcher constraints → Constrain angle
Workbenches
Sketcher
Default shortcut
A
Introduced in version
-
See also
Constrain distance, Constraint Perpendicular

Description

Descriere

Constrângerea de unghi este o datum constraint având ca scop fixarea unghiurilor unei schițe. Este capabilă să definească pantele liniilor individuale, unghiurile dintre linii, unghiurile de intersecții ale curbelor și deschiderile unghiulare ale arcurilor circulare.

Cum se folosește

Sunt patru căi diferite pentru ca această constrângere să fie aplicată:

  1. Liniilor individuale
  2. între linii
  3. asupra interesecțiilor curbelor
  4. Arcurilor de cercuri

See also: Drawing aids.

Continue mode

  1. Make sure there is no selection.
  2. There are several ways to invoke the tool:
    • introduced in version 1.0: If the Dimensioning constraints preference is set to Single tool (default): press the down arrow to the right of the button and select the Constrain angle option from the dropdown.
    • If this preference has a different value (and in version 0.21 and below): press the Constrain angle button.
    • Select the Sketch → Sketcher constraints → Constrain angle option from the menu.
    • introduced in version 1.0: Right-click in the 3D view and select the Dimension → Constrain angle option from the context menu.
    • Use the keyboard shortcut: K then A.
  3. The cursor changes to a cross with the tool icon.
  4. Do one of the following:
    • Select two lines.
    • Select a point and two edges (in that order).
    • Select an edge, a point and an edge (idem).
  5. If a driving dimensional constraint is created, depending on the preferences, a dialog opens to edit its value. A negative value will reverse the angle direction.
  6. An Angle constraint is added. If a point and two edges have been selected, up to two Point to object constraints can also be added. See Examples.
  7. Optionally keep creating constraints.
  8. To finish, right-click or press Esc, or start another geometry or constraint creation tool.

Run-once mode

  1. Do one of the following:
    • Select a single line.
    • Select a single circular arc.
    • Select two lines.
    • Select a point and two edges (in any order).
  2. Invoke the tool as explained above.
  3. Optionally edit the constraint value.
  4. An Angle 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

Single line

Constrângerea stabilește unghiul polar al direcției liniei. Este unghiul dintre linie și axa X a schiței.

Single circular arc

In acest mod, constrângerea fixată unghiulară a unui arc circular.

Between two lines

În acest mod, constrângerea stabilește unghiul dintre două linii. Nu este necesar ca liniile să se intersecteze.

Between two edges at point

The angle between the two edges at a given point is fixed. 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 either or both 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.

Script

Constrângerea Unghiulară poate fi creată cu macros și de la consola Python console utilizând următoarele: 

# line slope angle
Sketch.addConstraint(Sketcher.Constraint('Angle',iline,angle))

# angular span of arc
Sketch.addConstraint(Sketcher.Constraint('Angle',iarc,angle))

# angle between lines
Sketch.addConstraint(Sketcher.Constraint('Angle',iline1,pointpos1,iline2,pointpos2,angle))

# angle-via-point (no helper constraints are added automatically when from python)
Sketch.addConstraint(Sketcher.Constraint('AngleViaPoint',icurve1,icurve2,geoidpoint,pointpos,angle))

unde:

  • Sketch este un obiect tip schiță
  • iline, iline1, iline2 sunt numere întregi specificând liniile printr-un număr ordinal in Sketch.
  • pointpos1, pointpos2 should be 1 for start point and 2 for end point. The choice of endpoints allows to set internal angle (or external), and it affects how the constraint is drawn on the screen.
  • geoidpoint and pointpos in AngleViaPoint are the indexes specifying the point of intersection.
  • angle este valoarea unghiului în radiani. Unghiul este contorizat între vectorii tangenți în sens antiorar. Vectorii tangenți indică de la început până la capăt liniile (sau invers, dacă punctul final este indicat liniar) și în sens antiorar pentru cercuri, arce și elipse. Cantitatea este, de asemenea, acceptată ca un unghi (de exempluApp.Units.Quantity('45 deg'))

The Sketcher scripting page explains the values which can be used for iline, iline1, iline2, pointpos1, pointpos2, geoidpoint and pointpos and contains further examples on how to create constraints from Python scripts.


Sketcher
User documentation
Retrieved from "http://wiki.freecad.org/index.php?title=Sketcher_ConstrainAngle/ro&oldid=1405283"