213 lines
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<h1 id="rotatept">ROTATEPT</h1>
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<hr />
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<p>Rotates a point distribution about a point.</p>
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<pre>
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<b>rotatept</b>/ifirst,ilast,istride/[<b>no</b>]<b>copy</b> /xcen,ycen,zcen/theta/phi
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</pre>
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<p><code class="language-plaintext highlighter-rouge">ifirst,ilast,istride</code> is the node range selected by node numbers or pset,get,pname.</p>
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<p><strong><code class="language-plaintext highlighter-rouge">nocopy</code></strong> keeps only the rotated points, the node count does not change.</p>
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<p><strong><code class="language-plaintext highlighter-rouge">copy</code></strong> keeps a copy of the original unrotated points, as well as the rotated points.
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The new points will have the rotated coordinate values but no other mesh attributes will be set for these points.</p>
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<p><code class="language-plaintext highlighter-rouge">xcen,ycen,zcen</code> is the point center of rotation.</p>
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<p><code class="language-plaintext highlighter-rouge">theta</code> in degrees is the angle of rotation toward the negative z-axis.</p>
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<p><code class="language-plaintext highlighter-rouge">phi</code> in degrees is the angle of rotation of the XY plane around the Z-axis, where positive phi is measured from the positive x-axis toward the positive y-axis.</p>
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<h2 id="examples">EXAMPLES</h2>
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<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>define x1 38.
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define x2 170.
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define y1 17.
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define y2 81.
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cmo/create/cmosink/ / /quad
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quadxy/ 133 65 / x1 y1 0./ x2 y1 0./ x2 y2 0. / x1 y2 0.
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rotatept/1,0,0/nocopy/ x2 y1 0./0. -16.5
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</code></pre></div></div>
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<p>rotate from right lower corner xmax and ymin</p>
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<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>define XTRANS 55.
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define YTRANS 30.
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define ROT 30.
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trans/1,0,0/0. 0. 0./ XTRANS YTRANS 0./
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rotatept/1,0,0/nocopy/0. 0. 0./0. ROT
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</code></pre></div></div>
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<p>translate then rotate a grid</p>
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<hr />
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<p><a href="/pages/docs/demos/description_rotatept.html">Click here for demos</a></p>
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·
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