草图工作台中的以弧上3点创建弧的工具

This page is a translated version of the page Sketcher Create3PointArc and the translation is 62% complete.

Outdated translations are marked like this.

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后一页: 创建圆

Menu location
Sketcher Create3PointArc
Sketch → Sketcher geometries → Create Arc by three points
Workbenches
Sketcher
Default shortcut
G 3 A
Introduced in version
-
See also
None
Contents 1 描述 2 如何使用

描述

此工具通过用户拾取的3个点：弧上的起始点、终点以及弧上另一点来创建一条弧。

在开启此工具时，鼠标指针将变为一个附有红色弧图标的白色十字。而指针的坐标也将以蓝字实时显示在侧。

在3D视图中的空白区域或一个已存在对象上（一定要激活TaskView中的自动约束（auto constraints）。译注：0.18版中自动约束设置位于底图的首选项中）拾取对应点。
按Esc键或点击鼠标右键来退出该功能。

前一页:

后一页: 创建圆

General: Create sketch, Edit sketch, Leave sketch, View sketch, View section, Map sketch to face, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch, 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, Periodic B-pline, Polyline, Rectangle, Centered rectangle, Rounded rectangle, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Regular polygon, Slot, 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, Diameter, Radiam, Angle, Snell's law, Internal alignment
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint

Sketcher tools: Select unconstrained DoF, Close shape, Connect edges, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide internal geometry, Select origin, Select vertical axis, Select horizontal 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

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, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Raytracing, Reverse Engineering, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
Deprecated or unmaintained workbenches: Complete, Drawing, Robot