90 lines
6.8 KiB
HTML
90 lines
6.8 KiB
HTML
<html><head><title>PartDesign SubtractiveEllipsoid</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type='text/css' href='wiki.css' rel='stylesheet'></head><body><h1>PartDesign SubtractiveEllipsoid</h1></div>
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<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="mw-parser-output"><table class="fcinfobox wikitable ct" >
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<h3><span class="mw-headline" id="PartDesign_SubtractiveEllipsoid"><a href="https://www.freecadweb.org/wiki/index.php?title=File:PartDesign_SubtractiveEllipsoid.png" class="image"><img alt="PartDesign SubtractiveEllipsoid.png" src="PartDesign_SubtractiveEllipsoid.png" width="32" height="22" /></a> PartDesign SubtractiveEllipsoid</span></h3>
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<th class="ctOdd">Menu location
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<td class="ctEven">Part Design → Create an subtractive primitive → Subtractive Ellipsoid
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<th class="ctOdd">Workbenches
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</th></tr>
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<td class="ctEven"><a href="PartDesign_Workbench.html" title="PartDesign Workbench">PartDesign</a>
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<th class="ctOdd">Default shortcut
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<td class="ctEven">None
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<th class="ctOdd">See also
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<td class="ctEven"><a href="PartDesign_CompPrimitiveSubtractive.html" title="PartDesign CompPrimitiveSubtractive">PartDesign CompPrimitiveSubtractive</a>
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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="#PartDesign_SubtractiveEllipsoid"><span class="tocnumber">1</span> <span class="toctext">PartDesign SubtractiveEllipsoid</span></a></li>
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<li class="toclevel-1 tocsection-1"><a href="#Description"><span class="tocnumber">2</span> <span class="toctext">Description</span></a></li>
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<li class="toclevel-1 tocsection-2"><a href="#How_to_use"><span class="tocnumber">3</span> <span class="toctext">How to use</span></a></li>
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<li class="toclevel-1 tocsection-3"><a href="#Options"><span class="tocnumber">4</span> <span class="toctext">Options</span></a></li>
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<li class="toclevel-1 tocsection-4"><a href="#Properties"><span class="tocnumber">5</span> <span class="toctext">Properties</span></a></li>
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</ul>
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</td></tr></table>
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<p><br />
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</p>
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<h2><span class="mw-headline" id="Description">Description</span></h2>
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<p>Inserts a subtractive ellipsoid in the active Body. Its shape is subtracted from the existing solid.
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</p><p><span style="font-size:x-small;"><a href="Release_notes_0.17.html" title="Release notes 0.17">available in version 0.17</a></span>
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</p><p><br />
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</p>
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<div class="floatnone"><a href="https://www.freecadweb.org/wiki/index.php?title=File:PartDesign_SubtractiveEllipsoid_example.svg" class="image"><img alt="PartDesign SubtractiveEllipsoid example.svg" src="PartDesign_SubtractiveEllipsoid_example.svg" width="600" height="300" /></a></div>
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<p><i>On the left: active body (A) shown in grey and subtractive ellipsoid (B) shown in transparent red; result on the right.</i>
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</p>
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<h2><span class="mw-headline" id="How_to_use">How to use</span></h2>
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<ol><li> Press the <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;"><a href="https://www.freecadweb.org/wiki/index.php?title=File:PartDesign_SubtractiveEllipsoid.png" class="image"><img alt="PartDesign SubtractiveEllipsoid.png" src="24px-PartDesign_SubtractiveEllipsoid.png" width="24" height="16" srcset="PartDesign_SubtractiveEllipsoid.png 1.5x" /></a> <b>Subtractive Ellipsoid</b></span> button. <b>Note</b>: the Subtractive Ellipsoid is part of an icon menu labelled <i>Create an subtractive primitive</i>. After launching FreeCAD, the Subtractive Box is the one displayed in the toolbar. To get to the Ellipsoid button, click on the down arrow besides the visible icon and select Subtractive Ellipsoid in the menu.</li>
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<li> Set the Primitive parameters and <a href="Part_Attachment.html" title="Part Attachment">Attachment</a>.</li>
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<li> Click <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">OK</span>.</li>
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<li> An Ellipsoid feature appears under the active Body.</li></ol>
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<h2><span class="mw-headline" id="Options">Options</span></h2>
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<p>The Ellipsoid can be edited after its creation in two ways:
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</p>
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<ul><li> Double-clicking it in the Model tree, or by right-clicking and selecting <b>Edit primitive</b> in the contextual menu; this brings up the Primitive parameters.</li>
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<li> Via the <a href="Property_editor.html" title="Property editor">Property editor</a>.</li></ul>
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<h2><span class="mw-headline" id="Properties">Properties</span></h2>
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<ul><li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Attachment</b>: defines the attachment mode as well as the Attachment Offset. See <a href="Part_Attachment.html" title="Part Attachment">Part Attachment</a>.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Label</b>: label given to the Ellipsoid object. Change to suit your needs.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Radius1</b>: the radius value along the ellipsoid's vertical axis; by default, parallel to the Z-axis.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Radius2</b>: the radius value along the ellipsoid's length; by default, parallel to the X-axis.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Radius2</b>: the radius value along the ellipsoid's width; by default, parallel to the Y-axis. At the default value of zero, the ellipsoid forms an <a rel="nofollow" class="external text" href="http://en.wikipedia.org/wiki/Oblate_spheroid">oblate spheroid</a>.</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Angle1</b>: (labelled <i>V parameter</i> in the Primitive parameters) lower truncation of the ellipsoid, parallel to the circular cross section (-90 degrees in a full spheroid)</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Angle2</b>: (unlabelled in the Primitive parameters) upper truncation of the ellipsoid, parallel to the circular cross section (90 degrees in a full spheroid).</li>
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<li> <span style="font-size: 0.6em;padding-right:10px;">DATA</span><b>Angle3</b>: (labelled <i>U parameter</i> in the Primitive parameters) angle of rotation of the elliptical cross section (360 degrees in a full spheroid).</li></ul>
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<p><br />
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</p>
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<div style="clear:both"></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=PartDesign_SubtractiveEllipsoid&oldid=264994">http://www.freecadweb.org/wiki/index.php?title=PartDesign_SubtractiveEllipsoid&oldid=264994</a>"</div>
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<h2>Navigation menu</h2>
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