Sketcher ValidateSketch/it: Difference between revisions
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{{Docnav/it|[[Sketcher_Reorient/it|Riposiziona schizzo]]|[[Sketcher MergeSketches/it|Unisci schizzi]]|[[Sketcher_Workbench/it|Sketcher]]|IconL=|IconC=Workbench_Sketcher.svg|IconR=Sketcher MergeSketch.svg}} |
{{Docnav/it|[[Sketcher_Reorient/it|Riposiziona schizzo]]|[[Sketcher MergeSketches/it|Unisci schizzi]]|[[Sketcher_Workbench/it|Sketcher]]|IconL=|IconC=Workbench_Sketcher.svg|IconR=Sketcher MergeSketch.svg}} |
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[[File:Sketcher_ValidateSketch_taskpanel.png]] |
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{{Caption|The Sketcher validation task panel}} |
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[[File:Sketcher validation tasks_it.png|left]] |
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Press {{Button|Highlight open vertexes}} to highlight vertexes that are outside this tolerance. |
Press {{Button|Highlight open vertexes}} to highlight vertexes that are outside this tolerance. |
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This tolerance is also used by the {{Button|Find}}/{{Button|Fix}} process |
This tolerance is also used by the {{Button|Find}}/{{Button|Fix}} process. |
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Lasciare selezionata la casella di controllo "Ignora la geometria di costruzione" per ignorare la geometria di costruzione nell'analisi. |
Lasciare selezionata la casella di controllo "Ignora la geometria di costruzione" per ignorare la geometria di costruzione nell'analisi. |
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===Invalid constraints=== |
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For example, if there is a Circle-Line-Tangent constraint, but it references two lines, it is considered invalid. |
For example, if there is a Circle-Line-Tangent constraint, but it references two lines, it is considered invalid. |
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(This sometimes happens due to the Topological |
(This sometimes happens due to the [[Topological naming problem]], i.e. the external geometry changes type). |
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It also does other checks, such as for empty links. |
It also does other checks, such as for empty links. |
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===Degenerated geometry=== |
===Degenerated geometry=== |
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Degenerated geometry can result from solver actions in a sketch. |
Degenerated geometry can result from solver actions in a sketch. |
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Other examples: a zero length line or zero radius circle/arc. |
Other examples: a zero length line or zero radius circle/arc. |
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===Reversed external geometry=== |
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This process might be helpful if sketches with external-geometry fail to solve because of these changes. |
This process might be helpful if sketches with external-geometry fail to solve because of these changes. |
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===Constraint orientation locking=== |
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Internally they work by constraining the angle between tangent vectors. With tangent constraint for example, the angle can be 0 or 180 degrees (co-directed or opposed vectors). The actual angle is remembered in the constraint data ("constraint orientation is locked"), it guards against flipping. But the angle can be erased ("constraint orientation unlock") or updated; these tools do exactly that. |
Internally they work by constraining the angle between tangent vectors. With tangent constraint for example, the angle can be 0 or 180 degrees (co-directed or opposed vectors). The actual angle is remembered in the constraint data ("constraint orientation is locked"), it guards against flipping. But the angle can be erased ("constraint orientation unlock") or updated; these tools do exactly that. |
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The locking mechanism typically works well and this tool should not be needed. |
The locking mechanism typically works well and this tool should not be needed. '''It should only used after making a backup of the open document.''' |
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Revision as of 12:16, 21 February 2021
Convalida lo schizzo |
Posizione nel menu |
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Sketch/Part Design → Convalida lo schizzo... |
Ambiente |
Sketcher, PartDesign |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Nessuno |
Descrizione
L'utilità Convalida lo schizzo può essere usata per riparare uno schizzo che non è più modificabile, cha ha vincoli non validi, o per aggiungere vincoli di coincidenza a uno schizzo creato da una geometria importata come file DXF. Può anche essere utile individuare una coincidenza mancante in uno schizzo nativo che genera un errore "can't validate broken face" quando si tenta di applicare una funzione di PartDesign.
The Sketcher validation task panel
Utilizzo
- Selezionare lo schizzo da convalidare, dall'albero del modello o facendo clic su uno dei suoi bordi nella vista 3D. Nota: lo schizzo non deve essere in modalità di modifica. Se si è in modalità di modifica dello schizzo, è necessario usire dallo schizzo.
- Aprire l'utility di convalida dal menu Schizzo o Part Design.
- Selezionare le sottostanto opzioni per l'operazione.
- Premere il pulsante Chiudi quando fatto.
Opzioni
Coincidenze mancanti
Trova coincidenze mancanti per i vertici sovrapposti e li aggiunge. Premere il pulsante Trova; appare una finestra di dialogo per segnalare quante coincidenze mancanti sono state trovate; sono mostrate nella vista 3D come croci gialle. Premere OK per chiudere la finestra di dialogo, quindi premere il pulsante Ripara per aggiungere le coincidenze mancanti.
Se necessario, definire un valore di tolleranza maggiore nel campo a discesa.
Press Highlight open vertexes to highlight vertexes that are outside this tolerance.
This tolerance is also used by the Find/Fix process.
Lasciare selezionata la casella di controllo "Ignora la geometria di costruzione" per ignorare la geometria di costruzione nell'analisi.
Invalid constraints
Vincoli non validi
For example, if there is a Circle-Line-Tangent constraint, but it references two lines, it is considered invalid.
(This sometimes happens due to the Topological naming problem, i.e. the external geometry changes type).
It also does other checks, such as for empty links.
Degenerated geometry
Degenerated geometry can result from solver actions in a sketch.
For instance, if a line is forced to shorten to become almost a point.
Other examples: a zero length line or zero radius circle/arc.
Reversed external geometry
Geometria esterna reversa
This process might be helpful if sketches with external-geometry fail to solve because of these changes.
Constraint orientation locking
Vincolo orientamento bloccato
Internally they work by constraining the angle between tangent vectors. With tangent constraint for example, the angle can be 0 or 180 degrees (co-directed or opposed vectors). The actual angle is remembered in the constraint data ("constraint orientation is locked"), it guards against flipping. But the angle can be erased ("constraint orientation unlock") or updated; these tools do exactly that.
The locking mechanism typically works well and this tool should not be needed. It should only used after making a backup of the open document.
- 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, Start, Surface, TechDraw, Test Framework, Web
- Hubs: User hub, Power users hub, Developer hub