80 lines
5.9 KiB
HTML
80 lines
5.9 KiB
HTML
<html><head><title>Sketcher Arc of Ellipse/ru</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type='text/css' href='wiki.css' rel='stylesheet'></head><body><h1>Sketcher Arc of Ellipse/ru</h1></div>
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<div id="mw-content-text" lang="ru" dir="ltr" class="mw-content-ltr"><hr/><div class="mw-parser-output"><table class="fcinfobox wikitable ct" >
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<td class="ctTitle">
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<h3><span class="mw-headline" id="Sketcher_CreateArcOfEllipse"><a href="https://www.freecadweb.org/wiki/index.php?title=File:Sketcher_CreateArcOfEllipse.png" class="image"><img alt="Sketcher CreateArcOfEllipse.png" src="32px-Sketcher_CreateArcOfEllipse.png" width="32" height="32" srcset="/wiki/images/thumb/6/69/Sketcher_CreateArcOfEllipse.png/48px-Sketcher_CreateArcOfEllipse.png 1.5x, /wiki/images/thumb/6/69/Sketcher_CreateArcOfEllipse.png/64px-Sketcher_CreateArcOfEllipse.png 2x" /></a> Sketcher CreateArcOfEllipse</span></h3>
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<th class="ctOdd">Расположение в меню
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</th></tr>
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<td class="ctEven">Sketch → Геометрия эскиза → Create an arc of ellipse
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</td></tr>
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<th class="ctOdd">Верстаки
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</th></tr>
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=Sketcher_Workbench/ru" title="Sketcher Workbench/ru">Sketcher</a>, <a href="https://www.freecadweb.org/wiki/index.php?title=PartDesign_Workbench/ru" title="PartDesign Workbench/ru">Part Design</a>
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<th class="ctOdd">Быстрые клавиши
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<td class="ctEven">отсутствуют
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<th class="ctOdd">См. также
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</th></tr>
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=Sketcher_Ellipse/ru" title="Sketcher Ellipse/ru">Sketcher Ellipse</a>, <a href="https://www.freecadweb.org/wiki/index.php?title=Sketcher_Arc/ru" title="Sketcher Arc/ru">Sketcher Arc</a>
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</td></tr>
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<td class="ctToc"><br /><div id="toc" class="toc"><div class="toctitle"><h2>Contents</h2></div>
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<ul>
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<li class="toclevel-1"><a href="#Sketcher_CreateArcOfEllipse"><span class="tocnumber">1</span> <span class="toctext">Sketcher CreateArcOfEllipse</span></a>
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<ul>
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<li class="toclevel-2 tocsection-1"><a href="#Description"><span class="tocnumber">1.1</span> <span class="toctext">Description</span></a></li>
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<li class="toclevel-2 tocsection-2"><a href="#Usage"><span class="tocnumber">1.2</span> <span class="toctext">Usage</span></a></li>
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<li class="toclevel-2 tocsection-3"><a href="#Peculiarities"><span class="tocnumber">1.3</span> <span class="toctext">Peculiarities</span></a></li>
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<li class="toclevel-2 tocsection-4"><a href="#Version"><span class="tocnumber">1.4</span> <span class="toctext">Version</span></a></li>
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</ul>
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</li>
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</ul>
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</div>
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</td></tr></table>
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<p><br />
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</p>
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<h4><span class="mw-headline" id="Description">Description</span></h4>
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<p>This tool draws an arc of ellipse by picking four points: the center, the end of major radius, the start point and the end point.
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When starting the tool, the mouse pointer changes to a white cross with a red ellipse arc icon. Besides are coordinates shown in real time.
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</p>
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<div class="thumb tnone"><div class="thumbinner" style="width:502px;"><a href="https://www.freecadweb.org/wiki/index.php?title=File:Sketcher_ArcOfEllipseExample1.png" class="image"><img alt="" src="500px-Sketcher_ArcOfEllipseExample1.png" width="500" height="304" class="thumbimage" srcset="/wiki/images/b/b3/Sketcher_ArcOfEllipseExample1.png 1.5x" /></a> <div class="thumbcaption"><div class="magnify"><a href="https://www.freecadweb.org/wiki/index.php?title=File:Sketcher_ArcOfEllipseExample1.png" class="internal" title="Enlarge"></a></div>The sequence of clicks is indicated by yellow arrows with numbers. C is the center, a - major diameter, b - minor diameter, F1, F2 are foci.</div></div></div>
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<h4><span class="mw-headline" id="Usage">Usage</span></h4>
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<ul><li> Invoke the command by clicking a toolbar button, picking the menu item, or by using keyboard shortcut (needs to be assigned first in <a href="Interface_Customization.html" title="Interface Customization">Interface Customization</a>).</li>
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<li> First click in 3D view sets ellipse center. Second click sets the first radius and orientation of the ellipse. Third click sets the other radius and the start of the arc. The fourth click sets the end of the arc. </li>
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<li> After the fourth click, the arc of ellipse is created, together with a set of construction geometry aligned to it (major diameter, minor diameter, two foci). The construction geometry can be manually deleted if not needed, and recreated later. See <a href="Constraint_Internal_Alignment.html" title="Constraint Internal Alignment">Internal Alignment Constraint</a> and <a href="Sketcher_Show_Hide_Internal_Geometry.html" title="Sketcher Show Hide Internal Geometry">Sketcher Show Hide Internal Geometry</a>.</li>
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<li> Pressing <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">ESC</span> or clicking the right mouse button cancels the function.</li></ul>
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<h4><span class="mw-headline" id="Peculiarities">Peculiarities</span></h4>
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<ul><li> Major and minor axes of underlying ellipse are strict and cannot be swapped by resizing. The underlying ellipse must be rotated to swap the axes.</li>
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<li> Unlike ellipse that can be constrained to become a circle, ellipse arc cannot represent an arc of circle.</li>
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<li> Moving the arc of ellipse by edge is the same as moving ellipse's center.</li></ul>
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<h4><span class="mw-headline" id="Version">Version</span></h4>
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<p>Introduced in FreeCAD v0.15.4309
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</p>
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</div>
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</div><div class="printfooter">
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Online version: "<a dir="ltr" href="https://www.freecadweb.org/wiki/index.php?title=Sketcher_Arc_of_Ellipse/ru&oldid=209120">http://www.freecadweb.org/wiki/index.php?title=Sketcher_Arc_of_Ellipse/ru&oldid=209120</a>"</div>
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<div id="catlinks" class="catlinks" data-mw="interface"></div><div class="visualClear"></div>
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<div id="mw-navigation">
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<h2>Navigation menu</h2>
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