Constraint PointOnObject

Coincident

Vertical

Sketcher

Constraint PointOnObject
Menyplacering
Sketch → Sketcher constraints → Constrain point onto object
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Sketcher, PartDesign
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Introducerad i version
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Constraint Coincident

Description

Beskrivning

Usage

1. Select the point you want to affix onto a line/arc/etc. (Result: Once selected the point will become green).
2. Select the line you want affixed onto the point you have just selected (Result: Once selected the line becomes green).
3. Invoke the Constrain point onto object tool using several methods:
   • Press the Point on object button in the toolbar.
   • Use the Shift + O keyboard shortcut.
   • Use the Sketch → Sketcher constraints → Constrain point onto object entry in the top menu.

Note: The order you select the line and point does not matter. The point will always move to line. In other words, the line remains fixed.

Scripting

The constraint can be created from macros and from the Python console by using the following command:

Sketch.addConstraint(Sketcher.Constraint('PointOnObject',LineMoving,PointOfLineMoving,LineFixed))

• Sketch is a sketch object.
• LineMoving is the number that designates the line, which contains the point that has to be moved onto the LineFixed (the line which is fixed).
• PointOfLineMoving is the number of the vertex of line LineMoving, that has to be moved onto the LineFixed.
• LinedFixed is the number of the line to be affixed onto the point PointOfLineMoving.

The Sketcher scripting page explains how to identify the numbers that designate lines and points.

Coincident

Vertical

Sketcher

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

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• 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

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• 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

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• 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

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• 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

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• Sketcher virtual space: Switch virtual space

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• 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

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• Addons: Addon Manager, External workbenches, Scripting and macros

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• Hubs: User hub, Power users hub, Developer hub