Draft Snap
Description
Snäppa innebär att din nästa 3d punkt "klistras" på en existerande punkt.
Another way of selecting points is by snapping. Snapping means "gluing" your next point onto an existing point or feature of another object.
Snapping is available with most Draft and Arch Workbench tools, and can be enabled and disabled globally with the 
Toggle snap button, located in the snap toolbar: View → Toolbars → Draft Snap.
Note: using many snapping methods at the same time can be problematic; in this case, try activating only one snapping method.
Snäppning i Skissmodulen har två lägen: ett aktivt läge och ett passivt läge.
Passivt läge
Du är automatiskt i passivt läge när du ritar. Om din musmarkör i passivt läge svävar över ett existerand objekt, så kommer din punkt att snäppas till den närmaste punkten på objektet. En öppen cirkelsymbol syns.
Toggle snap: toggles object snapping globally on or off.
Endpoint: snaps to the endpoints of line, arc and spline segments.
Midpoint: snaps to the middle point of line and arc segments.
Center: snaps to the center point of arcs and circles.
Angle: snaps to the special cardinal points of circles and arcs, at 45° and 90°.
Intersection: snaps to the intersection of two line or arc segments. Hover the mouse over the two desired objects to activate their intersection snaps.
Perpendicular: on line and arc segments, snaps perpendicularly to the latest point.
Extension: snaps on an imaginary line that extends beyond the endpoints of line segments. Hover the mouse over the desired object to activate its extension snap.
Parallel: snaps on an imaginary line parallel to a line segment. Hover the mouse over the desired object to activate its parallel snap.
Special: snaps on special points defined by the object. introduced in version 0.17
Near: snaps to the closest point or edge on the nearest object.
Ortho: snaps on imaginary lines that cross the last point, and extend at 0°, 45° and 90°.
Grid: snaps to the intersections of the grid lines, if the grid is visible.
Working plane: always places the snapped point on the current working plane, even if you snap to a point outside that working plane.
Dimensions: shows temporary X and Y dimensions while snapping.
Toggle grid: toggles the visibility of the grid on or off.
Advanced snapping
- Additional snap locations can be obtained by combining two snapping methods, such as Draft Ortho and Draft Extension, that will give you a snap point at the intersection of their imaginary lines.
- Other snap locations can be obtained by using Draft Constrains, that is, by holding Shift or pressing X, Y or Z while drawing.
- Press Q while drawing to insert a "hold point" at the current location of the cursor. You will then be able to snap orthogonally to these hold points, and at the intersections of their orthogonal axes. If Draft Midpoint snapping is enabled, you will also be able to snap at the mid distance between any two hold points. introduced in version 0.17
Options
Aktivt läge
För att växla till aktivt läge, håll ned CTRL medan du ritar. I aktivt läge, så visas antingen en stängd cirkel eller en öppen eller stängd kvadrat, beroende på snäpptyp. I alla verktyg som stöder snäppning, är följande snäpp platser tillgängliga:
- Linjernas ändpunkt
- Linjernas mittpunkt
- Cirklarnas och cirkelbågarnas centrum
- Cirklarnas och cirkelbågarnas kvadrantpunkter
- Cirkelbågarnas ändpunkter
- Vid begränsning (SKIFT), vertikalt eller horisontellt uppriktade punkter på linjer
- Skärningspunkter mellan segment
I verktyg som stöder både snäppning och begränsning, så kan kombinationen av båda (SKIFT+CTRL) utöka snäppningsmöjligheterna.
- Basics: Coordinates, Constraining, Snapping (Near, Extension, Parallel, Grid, Endpoint, Midpoint, Perpendicular, Angle, Center, Ortho, Intersection, Special, Dimensions, Working plane)
- Drawing: Line, Wire, Circle, Arc, Ellipse, Polygon, Rectangle, Text, Dimension, BSpline, Point, ShapeString, Facebinder, Bezier Curve, Label
- Modifying: Move, Rotate, Offset, Trimex, Upgrade, Downgrade, Scale, Edit, Wire to BSpline, Add point, Delete point, Shape 2D View, Draft to Sketch, Array, Path Array, Point Array, Clone, Drawing, Mirror, Stretch
- Utilities: Set working plane, Finish line, Close line, Undo line, Toggle construction mode, Toggle continue mode, Apply style, Toggle display mode, Add to group, Select group contents, Toggle snap, Toggle grid, Show snap bar, Heal, Flip Dimension, VisGroup, Slope, AutoGroup, Set Working Plane Proxy, Add to Construction group
- Additional: Preferences, Import-Export Preferences (DXF/DWG, SVG, OCA, DAT); Draft API
- Installation: Unix, Windows, Mac; Getting started
- Basics: About FreeCAD, Workbenches, Preferences, Document structure, Interface Customization, Properties, Mouse Model; Tutorials
- Workbenches: Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Plot, Points, Raytracing, Reverse Engineering, Robot, Ship, Sketcher, Spreadsheet, Start, Surface workbench, TechDraw, Test Framework, Web
- Scripting: Introduction to Python, FreeCAD scripting tutorial, FreeCAD Scripting Basics, How to install macros, Gui Command, Units Modules: Builtin modules, Workbench creation, Installing more workbenches Meshes: Mesh Scripting, Mesh Module Parts: The Part Module, Topological data scripting, PythonOCC, Mesh to Part Coin scenegraph: The Coin/Inventor scenegraph, Pivy Qt interface: PySide, Using the FreeCAD GUI, Dialog creation Parametric objects: Scripted objects Other: Code snippets, Line drawing function, Embedding FreeCAD, FreeCAD vector math library, Power users hub, Python, Macros, FreeCAD Scripting Basics, Topological data scripting
