底图椭圆
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Outdated translations are marked like this.
Menu location |
---|
Draft → Ellipse |
Workbenches |
Draft, Arch |
Default shortcut |
E L |
Introduced in version |
0.7 |
See also |
Draft Circle, Draft Arc |
Contents |
描述
椭圆工具会根据用户输入的两个点,在当前的工作平面内创建一个椭圆。该椭圆将恰好适配于这两个矩形角点所定义的矩形盒中。另外,此工具将根据Draft Tray中的Draft Linestyle设置来绘制椭圆。
通过矩形角点所定义的椭圆
Usage
如何使用
- 按下
Draft Ellipse按钮,或先按E键再按L键。
- 在3D视图中点击第一个点,或输入一个 坐标并按下
add point按钮。
- 在3D视图中点击第二个点,或输入一个坐标并按下
add point按钮。
创建椭圆之后,通过将其第一角度(first angle)与最后角度(last angle)两个属性设置为不同值,便可以将它转换为一条椭圆弧。
选项
- To enter coordinates manually, simply enter the numbers, then press Enter between each X, Y and Z component. You can press the
add point button when you have the desired values to insert the point.
- Press R or click the checkbox to toggle relative mode. If relative mode is on, the coordinates of the second point are relative to the first one; if not, they are absolute, taken from the origin (0,0,0).
- Press T or click the checkbox to toggle continue mode. If continue mode is on, the Ellipse tool will restart after you finish the shape, allowing you to draw another one without pressing the tool button again.
- Press L or click the checkbox to toggle filled mode. If filled mode is on, the ellipse will create a filled face (DataMake Face
true
); if not, the ellipse will not make a face (DataMake Facefalse
). - Hold Ctrl while drawing to force snapping your point to the nearest snap location, independently of the distance.
- Hold Shift while drawing to constrain your second point horizontally or vertically in relation to the first one.
- Press Esc or the Close button to abort the current command.
Properties
An Ellipse object shares many properties with a Draft Circle, but some properties only make sense for the ellipse.
Data
- DataFirst Angle: specifies the angle of the first point of the ellipse; normally 0°.
- DataLast Angle: specifies the angle of the last point of the ellipse; normally 0°.
- DataMajor Radius: specifies the major radius of the ellipse.
- DataMinor Radius: specifies the minor radius of the ellipse.
- If the both radius have the same value, the ellipse looks the same as a Draft Circle.
- DataMake Face: specifies if the Ellipse makes a face or not. If it is
true
a face is created, otherwise only the perimeter is considered part of the object. This property only works if the shape is a full ellipse.
- For it to be a full ellipse DataFirst Angle and DataLast Angle should have the same value; otherwise, an elliptical arc is displayed. The values 0° and 360° are considered the same.
View
- ViewPattern: specifies a Draft Pattern with which to fill the face of the shape. This property only works if DataMake Face is
true
, and if ViewDisplay Mode is "Flat Lines". - ViewPattern Size: specifies the size of the Draft Pattern.
Scripting
See also: Draft API and FreeCAD Scripting Basics.
The Ellipse tool can by used in macros and from the Python console by using the following function:
Ellipse = makeEllipse(majradius, minradius, placement=None, face=True, support=None)
- Creates an
Ellipse
object with given major (majradius
) and minor (minradius
) radius in millimeters.- The bigger value will be used for the major radius (X axis) if no other placement is given.
- If a
placement
is given, it is used; otherwise the shape is created at the origin. - If
face
isTrue
, the ellipse will make a face, that is, it will appear filled.
Example:
import FreeCAD, Draft
Ellipse1 = Draft.makeEllipse(3000, 200)
Ellipse2 = Draft.makeEllipse(700, 1000)
ZAxis = FreeCAD.Vector(0, 0, 1)
p3 = FreeCAD.Vector(1000, 1000, 0)
place3 = FreeCAD.Placement(p3, FreeCAD.Rotation(ZAxis, 90))
Ellipse3 = Draft.makeEllipse(700, 1000, placement=place3)
Draft
- 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
User documentation

- Installation: Windows, Linux, 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