Draft BSpline/ru: Difference between revisions

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==Description==


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==Usage==
==Usage==

# Press the {{Button|[[Image:Draft BSpline.png|16px]] [[Draft BSpline]]}} button, or press {{KEY|B}} then {{KEY|S}} keys
# Press the {{Button|[[Image:Draft_BSpline.svg|16px]] [[Draft BSpline]]}} button, or press {{KEY|B}} then {{KEY|S}} keys
# Click a first point on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
# Click a first point on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
# Click additional points on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
# Click additional points on the 3D view, or type a [[Draft_Coordinates|coordinate]] and press the {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} button.
# Press {{KEY|Esc}} or the {{Button|Close}} button to complete the edition.
# Press {{KEY|Esc}} or the {{Button|Close}} button to complete the edition.


The spline can be edited by double clicking on the element in the tree view, or by pressing the {{Button|[[Image:Draft Edit.png|16px]] [[Draft Edit|Draft Edit]]}} button. Then you can move the points to a new position, or click {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} or {{Button|[[Image:Draft_DelPoint.svg|16px]] [[Draft_DelPoint|remove point]]}} and then click on the wire to add or remove points.
The spline can be edited by double clicking on the element in the tree view, or by pressing the {{Button|[[Image:Draft_Edit.svg|16px]] [[Draft Edit|Draft Edit]]}} button. Then you can move the points to a new position, or click {{Button|[[Image:Draft_AddPoint.svg|16px]] [[Draft_AddPoint|add point]]}} or {{Button|[[Image:Draft_DelPoint.svg|16px]] [[Draft_DelPoint|remove point]]}} and then click on the wire to add or remove points.


==Options==
==Options==
* Press {{KEY|A}} or the {{Button|[[Image:Draft FinishLine.png|12px]] [[Draft_FinishLine|Finish]]}} button to finish the spline, leaving it open.
* Press {{KEY|A}} or the {{Button|[[Image:Draft_FinishLine.svg|12px]] [[Draft_FinishLine|Finish]]}} button to finish the spline, leaving it open.
* Press {{KEY|O}} or the {{Button|[[Image:Draft CloseLine.png|12px]] [[Draft_CloseLine|Close]]}} button to close the spline, that is, a curve will be added from the last point to the first one to form a face. At least three points are required to form a face.
* Press {{KEY|O}} or the {{Button|[[Image:Draft_CloseLine.svg|12px]] [[Draft_CloseLine|Close]]}} button to close the spline, that is, a curve will be added from the last point to the first one to form a face. At least three points are required to form a face.
* Press {{KEY|W}} or the {{Button|[[Image:Draft Wipe.svg|12px]] [[Draft_Wipe|Wipe]]}} button to remove the curve segments already placed, but keep editing the spline from the last point.
* Press {{KEY|W}} or the {{Button|[[Image:Draft Wipe.svg|12px]] [[Draft_Wipe|Wipe]]}} button to remove the curve segments already placed, but keep editing the spline from the last point.
* Press {{KEY|U}} or the {{Button|[[Image:Draft SelectPlane.svg|12px]] [[Draft_SelectPlane|Set WP]]}} button to adjust the current working plane in the orientation of the last point.
* Press {{KEY|U}} or the {{Button|[[Image:Draft SelectPlane.svg|12px]] [[Draft_SelectPlane|Set WP]]}} button to adjust the current working plane in the orientation of the last point.
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* Hold {{KEY|Ctrl}} while drawing to force [[Draft_Snap|snapping]] your point to the nearest snap location, independently of the distance.
* Hold {{KEY|Ctrl}} while drawing to force [[Draft_Snap|snapping]] your point to the nearest snap location, independently of the distance.
* Hold {{KEY|Shift}} while drawing to [[Draft_Constrain|constrain]] your next point horizontally or vertically in relation to the last one.
* Hold {{KEY|Shift}} while drawing to [[Draft_Constrain|constrain]] your next point horizontally or vertically in relation to the last one.
* Press {{KEY|Ctrl}}+{{KEY|Z}} or press the {{Button|[[Image:Draft UndoLine.png|12px]] [[Draft_UndoLine|Undo]]}} button to undo the last point.
* Press {{KEY|Ctrl}}+{{KEY|Z}} or press the {{Button|[[Image:Draft_UndoLine.svg|12px]] [[Draft_UndoLine|Undo]]}} button to undo the last point.
* Press {{KEY|Esc}} or the {{Button|Close}} button to abort the current command; curve segments already placed will remain.
* Press {{KEY|Esc}} or the {{Button|Close}} button to abort the current command; curve segments already placed will remain.


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Revision as of 17:49, 21 February 2020

Other languages:

Draft BSpline

Системное название
Draft BSpline
Расположение в меню
Черчение → B-сплайн
Верстаки
Draft, Arch
Быстрые клавиши
B S
Представлено в версии
-
См. также
DWire

Description

Описание

Инструмент BSpline создает кривую B-Spline из нескольких точек текущей work plane. Он берет linewidth and color , предварительно установленный на вкладке «Задачи». Инструмент BSpline ведет себя точно так же, как инструмент Draft Wire.

The BSpline tool behaves like the Draft Wire tool, except that each of its segments is curved instead of being a straight line. Use Draft WireToBSpline to convert one to the other.

The BSpline tool specifies the exact points through which the curve will go; on the other hand the Draft BezCurve tool uses control points to define the direction of the curve. To create exact circular or elliptical curves, use Draft Arc and Draft Ellipse.

Usage

  1. Press the Draft BSpline button, or press B then S keys
  2. Click a first point on the 3D view, or type a coordinate and press the add point button.
  3. Click additional points on the 3D view, or type a coordinate and press the add point button.
  4. Press Esc or the Close button to complete the edition.

The spline can be edited by double clicking on the element in the tree view, or by pressing the Draft Edit button. Then you can move the points to a new position, or click add point or remove point and then click on the wire to add or remove points.

Options

  • Press A or the Finish button to finish the spline, leaving it open.
  • Press O or the Close button to close the spline, that is, a curve will be added from the last point to the first one to form a face. At least three points are required to form a face.
  • Press W or the Wipe button to remove the curve segments already placed, but keep editing the spline from the last point.
  • Press U or the Set WP button to adjust the current working plane in the orientation of the last point.
  • Press X, Y or Z after a point to constrain the next point on the given axis.
  • 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 next point are relative to the last 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 BSpline tool will restart after you finish the spline, 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, a closed spline will create a filled face (ДанныеMake Face true); if not, the closed spline will not make a face (ДанныеMake Face false).
Note: the spline should not be filled if it intersects itself, as it won't create a proper face. If the spline is filled but no shape is visible, manually set ДанныеMake Face to false to see the spline.
  • 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 next point horizontally or vertically in relation to the last one.
  • Press Ctrl+Z or press the Undo button to undo the last point.
  • Press Esc or the Close button to abort the current command; curve segments already placed will remain.

Properties

A BSpline object shares most properties from a Draft Wire, however, most properties only make sense for a Wire.

Data

  • ДанныеClosed: specifies if the spline is closed or not. If the spline is initially open, this value is false; setting it to true will draw a curve segment to close the spline. If the spline is initially closed, this value is true; setting it to false will remove the last curve segment, and make the spline open.
  • ДанныеMake Face: specifies if the spline 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 ДанныеClosed is true.
Note: do not set ДанныеMake Face to true if the spline intersects itself, as it won't create a proper face.
  • ДанныеParameterization: affects the shape of the BSpline.

View

  • ВидArrow Size: specifies the size of the symbol displayed at the end of the spline.
  • ВидArrow Type: specifies the type of symbol displayed at the end of the spline, which can be "Dot", "Circle", "Arrow", or "Tick".
  • ВидEnd Arrow: specifies whether to show a symbol at the last point of the spline, so it can be used as an annotation line.
  • ВидPattern: specifies a Draft Pattern with which to fill the face of a closed spline. This property only works if ДанныеMake Face is true, and if ВидDisplay Mode is "Flat Lines".
  • ВидPattern Size: specifies the size of the Draft Pattern.

Scripting

See also: Draft API and FreeCAD Scripting Basics.

The BSpline tool can be used in macros and from the Python console by using the following function: 

BSpline = makeBSpline(pointslist, closed=False, placement=None, face=None, support=None)
BSpline = makeBSpline(Part.Wire, closed=False, placement=None, face=None, support=None)
  • Creates a BSpline object from the given list of points, pointslist.
    • Each point in the list is defined by its FreeCAD.Vector, with units in millimeters.
    • Alternatively, the input can be a Part.Wire, from which points are extracted.
  • If closed is True, or if the first and last points are identical, the wire is closed.
  • If a placement is given, it is used; otherwise the shape is created at the origin.
  • If face is True, and the spline is closed, the spline will make a face, that is, it will appear filled.

Example: 

import FreeCAD, Draft

p1 = FreeCAD.Vector(0, 0, 0)
p2 = FreeCAD.Vector(1000, 1000, 0)
p3 = FreeCAD.Vector(2000, 0, 0)

BSpline1 = Draft.makeBSpline([p1, p2, p3], closed=True)
BSpline2 = Draft.makeBSpline([p1, 2*p3, 1.3*p2], closed=True)
BSpline3 = Draft.makeBSpline([1.3*p3, p1, -1.7*p2], closed=True)
Draft
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