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<center><h1>
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<center><h1>
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The logo of WIMS
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The logo of WIMS
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</h1>
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</h1>
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<p>
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<p>
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<img src="gifs/logo-160.gif" align="middle" alt="logo">
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<img src="gifs/logo-160.gif" align="middle" alt="logo"/>
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</center>
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</center>
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<p>The curve represents the trace of a point on a disk of radius 1 rotating
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<p>The curve represents the trace of a point on a disk of radius 1 rotating
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inside a fixed circle of radius 3. And the deformation of the curve
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inside a fixed circle of radius 3. And the deformation of the curve
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represents what happens when the distance of the point towards the center of
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represents what happens when the distance of the point towards the center of
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the moving disk varies from 0 to infinity.
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the moving disk varies from 0 to infinity.
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!href module=tool/geometry/animtrace.en&cmd=new&type=parametric2D&x1=(1-s)*cos(t+pi*s)+s*cos(2*t)&y1=(1-s)*sin(t+pi*s)-s*sin(2*t)&tleft=0&tright=2*pi&xleft=-1&xright=1&yleft=-1&yright=1&special_parm=noshow load directly these settings
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!href module=tool/geometry/animtrace.en&cmd=new&type=parametric2D&x1=(1-s)*cos(t+pi*s)+s*cos(2*t)&y1=(1-s)*sin(t+pi*s)-s*sin(2*t)&tleft=0&tright=2*pi&xleft=-1&xright=1&yleft=-1&yright=1&special_parm=noshow load directly these settings
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 into the menu of <font color="red">Tracés animés</font>
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 into the menu of <font color="red">Tracés animés</font>
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to plot it yourself.
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to plot it yourself.
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<p>
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<p>
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Date of creation 03-27-1998, &copy; XIAO, Gang.
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Date of creation 03-27-1998, &copy; XIAO, Gang.
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<p><hr> <p>
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<p><hr/></p>  <div class="wimscenter">
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<center>
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!href module=home Back to wims
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!href module=home Back to wims
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</center>
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</div>
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</div>
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</div>