123 lines
5.5 KiB
HTML
123 lines
5.5 KiB
HTML
<html><head><title>Macro Draw Parametric 2D Function/fr</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type='text/css' href='wiki.css' rel='stylesheet'></head><body><h1>Macro Draw Parametric 2D Function/fr</h1></div>
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<div id="mw-content-text" lang="fr" dir="ltr" class="mw-content-ltr"><hr/><div class="mw-parser-output"><table class="fcinfobox wikitable ct" width="100%" style="float: right; width: 230px; margin-left: 10px;">
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<tr>
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<td class="ctTitle">
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<h3><span class="mw-headline" id="Macro_Draw_Parametric_2D_Function"><a href="https://www.freecadweb.org/wiki/index.php?title=File:Text-x-python.png" class="image"><img alt="Text-x-python.png" src="32px-Text-x-python.png" width="32" height="32" srcset="/wiki/images/2/2c/Text-x-python.png 1.5x" /></a> Macro Draw Parametric 2D Function</span></h3>
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</td></tr>
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<tr>
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<th class="ctOdd">Description
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</th></tr>
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<td class="ctEven left">Dessin 2-dimensions, et éventuellement paramétrique avec une équation polaire .
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</td></tr>
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<tr>
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<th class="ctOdd">Auteur
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</th></tr>
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<tr>
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=User:T4b&action=edit&redlink=1" class="new" title="User:T4b (page does not exist)">T4b</a>
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</td></tr>
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<tr>
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<th class="ctOdd">Liens
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</th></tr>
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=Macros_recipes/fr" title="Macros recipes/fr">Recettes macros</a><br /><a href="https://www.freecadweb.org/wiki/index.php?title=How_to_install_macros/fr" title="How to install macros/fr">Comment installer une macro</a><br /><a href="https://www.freecadweb.org/wiki/index.php?title=Customize_Toolbars/fr" title="Customize Toolbars/fr">Comment ajouter une barre d'outils</a>
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</td></tr>
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<tr>
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<th class="ctOdd">Version
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</th></tr>
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<td class="ctEven macro-version">1.0
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</td></tr>
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<tr>
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<th class="ctOdd">Date dernière modification
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</th></tr>
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<td class="ctEven macro-date">2012-08-30
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</td></tr>
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<th class="ctOdd">
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</th></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="#Macro_Draw_Parametric_2D_Function"><span class="tocnumber">1</span> <span class="toctext">Macro Draw Parametric 2D Function</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="#Limitations"><span class="tocnumber">3</span> <span class="toctext">Limitations</span></a></li>
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<li class="toclevel-1 tocsection-3"><a href="#Utilisation"><span class="tocnumber">4</span> <span class="toctext">Utilisation</span></a></li>
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<li class="toclevel-1 tocsection-4"><a href="#Script"><span class="tocnumber">5</span> <span class="toctext">Script</span></a></li>
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</ul>
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</div>
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</td></tr>
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</table><a href="https://www.freecadweb.org/wiki/index.php?title=File:Macro_drawParametric2Dfunction.png" class="image" title="DrawParametric2DFunction"><img alt="DrawParametric2DFunction" src="480px-Macro_drawParametric2Dfunction.png" width="480" height="360" srcset="/wiki/images/5/50/Macro_drawParametric2Dfunction.png 1.5x" /></a>
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<h2><span class="mw-headline" id="Description">Description</span></h2>
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<p>Draws 2-dimensional, paramétrique et optionnellement équation polaire
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</p>
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<h2><span class="mw-headline" id="Limitations">Limitations</span></h2>
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<p>Possède encore quelques bugs et il manque certaines fonctionnalités. La documentation est dans le docstrings.
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</p>
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<h2><span class="mw-headline" id="Utilisation">Utilisation</span></h2>
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<p>Type :
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</p>
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<pre>#Example usage:
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draw2Dfunction(xFunction="0.5*n", yFunction="-0.75*n", n=0, nd=-math.pi, step=50, pol=1) </pre>
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<h2><span class="mw-headline" id="Script">Script</span></h2>
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<p><b>Macro_drawParametric2DFunction.FCMacro</b>
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</p>
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<pre>import FreeCAD, FreeCADGui, Part
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import math
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def evalFunction(suppliedFunction, n):
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"""This function uses eval to evaluate suppliedFunction.
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It does in no way check whether suppliedFunction is evil, thus it is itself evil!
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"""
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return eval(suppliedFunction)
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def draw2Dfunction(xFunction="n", yFunction="n", n=-5, nd=10, step=10, z=0, pol=0):
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"""Draws 2-dimensional mathemathical functions
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The function is drawn for n's between n and n+nd, in steps of 1/step, on the z-coordinate z.
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Equations for x and y can be given (xFunction and yFunction arguments), they default to n.
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If pol=1 then x is interpreted as r and y is interpreted as t.
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"""
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nStart=n
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while math.fabs(n-nd)-1.0/step>0:
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print "n: " + str(n)
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x=evalFunction(xFunction, n)
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y=evalFunction(yFunction, n)
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nNext=n+math.copysign(1,nd-n)/step
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print "nNext: " + str(nNext)
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xNext=evalFunction(xFunction, nNext)
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yNext=evalFunction(yFunction, nNext)
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if pol==0:
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nextSeg=(x,y,z),(xNext,yNext,z)
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else:
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nextSeg=(x*math.cos(y),x*math.sin(y),z),(xNext*math.cos(yNext),xNext*math.sin(yNext),z)
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print "nextSeg: " + str(nextSeg)
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nomme=Part.makeLine(*nextSeg)
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if n==nStart:
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WWire=Part.Wire([nomme])
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else:
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WWire=Part.Wire([WWire,nomme])
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n=nNext
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Part.show(WWire)
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#Example usage:
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draw2Dfunction(xFunction="0.5*n", yFunction="-0.75*n", n=0, nd=-math.pi, step=50, pol=1) </pre>
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</div>
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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=Macro_Draw_Parametric_2D_Function/fr&oldid=240585">http://www.freecadweb.org/wiki/index.php?title=Macro_Draw_Parametric_2D_Function/fr&oldid=240585</a>"</div>
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<div id="catlinks" class="catlinks" data-mw="interface"></div><div class="visualClear"></div>
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</div>
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</div>
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<div id="mw-navigation">
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<h2>Navigation menu</h2>
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