Draft Arc 3Points/zh-cn: Difference between revisions

Revision as of 03:04, 28 July 2019

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底图三圆周点绘弧工具通过输入4个点：中点、半径、第一个点、最后一点，或拾取的切线，或上述若干组合，在当前的工作平面上创建一条圆弧。它将根据Draft Tray中的Draft Linestyle设置来创建对应圆弧。

Arc defined by three points lying on a circumference

Press the Draft Arc 3Points button, or press A then T keys.
Click a first point on the 3D view, or type a coordinate and press the add point button.
Click a second point on the 3D view, or enter a radius value.
Click a third point in the 3D view, or enter a start angle.

An Arc object shares all properties from a Draft Circle, but some properties only make sense for the circle.

Drafting: Line, Polyline, Fillet, Arc, Arc by 3 points, Circle, Ellipse, Rectangle, Polygon, B-spline, Cubic Bézier curve, Bézier curve, Point, Facebinder, ShapeString, Hatch
Annotation: Text, Dimension, Label, Annotation styles, Annotation scale
Modification: Move, Rotate, Scale, Mirror, Offset, Trimex, Stretch, Clone, Array, Polar array, Circular array, Path array, Path link array, Point array, Point link array, Edit, Subelement highlight, Join, Split, Upgrade, Downgrade, Wire to B-spline, Draft to sketch, Set slope, Flip dimension, Shape 2D view

Draft Tray: Select plane, Set style, Toggle construction mode, AutoGroup
Snapping: Snap lock, Snap endpoint, Snap midpoint, Snap center, Snap angle, Snap intersection, Snap perpendicular, Snap extension, Snap parallel, Snap special, Snap near, Snap ortho, Snap grid, Snap working plane, Snap dimensions, Toggle grid

Miscellaneous: Apply current style, Layer, Manage layers, Add a new named group, Move to group, Select group, Add to construction group, Toggle normal/wireframe display, Create working plane proxy, Heal, Show snap toolbar
Additional: Constraining, Pattern, Preferences, Import Export Preferences, DXF/DWG, SVG, OCA, DAT
Context menu:
- Layer container: Merge layer duplicates, Add new layer
- Layer: Activate this layer, Select layer contents
- Text: Open hyperlinks
- Wire: Flatten
- Working plane proxy: Write camera position, Write objects state

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

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 ==描述==
+[[Draft Arc 3Points|底图三圆周点绘弧]]工具通过输入4个点：中点、半径、第一个点、最后一点，或拾取的切线，或上述若干组合，在当前的[[Draft SelectPlane|工作平面]]上创建一条圆弧。它将根据[[Draft Tray]]中的[[Draft Linestyle]]设置来创建对应圆弧。
-The [[Draft Arc 3Points|Arc 3Points]] tool creates a circular arc in the current [[Draft SelectPlane|work plane]] by entering four points, the center, the radius, the first point and the last point, or by picking tangents, or any combination of those. It uses the [[Draft Linestyle]] set on the [[Draft Tray]].