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bSplineBasis_example.html
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bSplineBasis_example.html
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<div class="title">bSplineBasis_example.cpp </div> </div>
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<div class="contents">
<div class="textblock"><h1><a class="anchor" id="bSplineBasis_exampleAnnotated"></a>
Annotated source file</h1>
<p>Here is the full file <code>examples/bSplineBasis_example.cpp</code>. Clicking on a function or class name will lead you to its reference documentation.</p>
<div class="fragment"><div class="line"></div>
<div class="line"><span class="comment">// Look also in tuturialBasis for more functionality of gsBSplineBasis.</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <iostream></span></div>
<div class="line"><span class="preprocessor">#include <string></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="gismo_8h.html">gismo.h</a>></span></div>
<div class="line"></div>
<div class="line"><span class="keyword">using namespace </span>gismo;</div>
<div class="line"></div>
<div class="line"><span class="comment">// forward declaration of some utility functions</span></div>
<div class="line"><span class="keywordtype">void</span> print(<span class="keyword">const</span> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a>& bsb, <span class="keyword">const</span> std::string& name);</div>
<div class="line"><span class="keywordtype">void</span> printToParaview(<span class="keyword">const</span> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a>& bsb, <span class="keyword">const</span> std::string& name);</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> <a class="code" href="example__shell2D_8cpp.html#a0ddf1224851353fc92bfbff6f499fa97">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[])</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"> <span class="comment">// different construction of a knot vector</span></div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> real_t a = 0; <span class="comment">// starting knot</span></div>
<div class="line"> real_t b = 1; <span class="comment">// ending knot</span></div>
<div class="line"> <a class="code" href="gsConfig_8h.html#ad722078677c063a09661059674fb996c">index_t</a> interior = 4; <span class="comment">// number of interior knots</span></div>
<div class="line"> <a class="code" href="gsConfig_8h.html#ad722078677c063a09661059674fb996c">index_t</a> multEnd = 3; <span class="comment">// multiplicity at the two end knots</span></div>
<div class="line"> <span class="keywordtype">bool</span> paraview = <span class="keyword">false</span>;</div>
<div class="line"></div>
<div class="line"> <a class="code" href="classgismo_1_1gsCmdLine.html">gsCmdLine</a> cmd(<span class="stringliteral">"This is a tutorial on the gsBSplineBasis class."</span>);</div>
<div class="line"> cmd.addReal(<span class="stringliteral">""</span>,<span class="stringliteral">"starting"</span>,<span class="stringliteral">"Starting knot"</span>,a);</div>
<div class="line"> cmd.addReal(<span class="stringliteral">""</span>,<span class="stringliteral">"ending"</span>,<span class="stringliteral">"Ending knot"</span>,b);</div>
<div class="line"> cmd.addInt(<span class="stringliteral">"n"</span>,<span class="stringliteral">"interior"</span>,<span class="stringliteral">"Number of interior knots"</span>,interior);</div>
<div class="line"> cmd.addInt(<span class="stringliteral">"m"</span>,<span class="stringliteral">"mult"</span>,<span class="stringliteral">"Multiplicity at the two end knots"</span>,multEnd);</div>
<div class="line"> cmd.addSwitch(<span class="stringliteral">"plot"</span>,<span class="stringliteral">"Plot with paraview"</span>,paraview);</div>
<div class="line"> <span class="keywordflow">try</span> { cmd.getValues(argc,argv); } <span class="keywordflow">catch</span> (<span class="keywordtype">int</span> rv) { <span class="keywordflow">return</span> rv; }</div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"------------- Constructions -----------------------------\n"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="keywordtype">int</span> degree = multEnd - 1;</div>
<div class="line"> <a class="code" href="classgismo_1_1gsKnotVector.html">gsKnotVector<></a> kv(a, b, interior, multEnd);</div>
<div class="line"></div>
<div class="line"> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a> bsb0(kv);</div>
<div class="line"> print(bsb0, <span class="stringliteral">"bsb0"</span>);</div>
<div class="line"></div>
<div class="line"> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a> bsb1(a, b, interior, degree);</div>
<div class="line"> print(bsb1, <span class="stringliteral">"bsb1"</span>);</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"> <span class="comment">// some properties</span></div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"------------- Some properties -----------------------\n\n"</span>;</div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"bsb0.size(): "</span> << bsb0.size() << <span class="stringliteral">"\n\n"</span></div>
<div class="line"> << <span class="stringliteral">"bsb0.numElements(): "</span> << bsb0.numElements() << <span class="stringliteral">"\n\n"</span></div>
<div class="line"> << <span class="stringliteral">"bsb0.degree(): "</span> << bsb0.degree() << <span class="stringliteral">"\n\n"</span>;</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"> <span class="comment">// some operations</span></div>
<div class="line"> <span class="comment">// ======================================================================</span></div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"------------- Some operations -----------------------\n\n"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="keyword">const</span> <a class="code" href="classgismo_1_1gsKnotVector.html">gsKnotVector<></a>& knots = bsb0.knots();</div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"Knots: \n"</span>;</div>
<div class="line"> knots.<a class="code" href="classgismo_1_1gsKnotVector.html#a8b638d3ffc8cdc87e921cfac5eb0efd3">print</a>(<a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a>);</div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"\n\n"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (paraview)</div>
<div class="line"> printToParaview(bsb0, <span class="stringliteral">"basis"</span>);</div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"bsb0.uniformRefine()\n"</span>;</div>
<div class="line"> bsb0.uniformRefine();</div>
<div class="line"> <span class="keywordflow">if</span> (paraview)</div>
<div class="line"> printToParaview(bsb0, <span class="stringliteral">"basisRefined"</span>);</div>
<div class="line"></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"bsb0.degreeElevate()\n"</span>;</div>
<div class="line"> bsb0.degreeElevate();</div>
<div class="line"> <span class="keywordflow">if</span> (paraview)</div>
<div class="line"> printToParaview(bsb0, <span class="stringliteral">"basisElevated"</span>);</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"Done. No output created, re-run with --plot to get a ParaView "</span></div>
<div class="line"> <span class="stringliteral">"files containing the solution.\n"</span>;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">void</span> printToParaview(<span class="keyword">const</span> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a>& bsb,</div>
<div class="line"> <span class="keyword">const</span> std::string& name)</div>
<div class="line">{</div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"Writing bsb0 to paraview in a file: "</span> << name << <span class="stringliteral">"\n\n"</span>;</div>
<div class="line"> gsWriteParaview(bsb, name);</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">void</span> print(<span class="keyword">const</span> <a class="code" href="classgismo_1_1gsBSplineBasis.html">gsBSplineBasis<></a>& bsb,</div>
<div class="line"> <span class="keyword">const</span> std::string& name)</div>
<div class="line">{</div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << name << <span class="stringliteral">": \n"</span>;</div>
<div class="line"> bsb.<a class="code" href="classgismo_1_1gsTensorBSplineBasis_3_011_00_01T_01_4.html#a6e3cd45c1a3a6ad3ce194eaaa1dec2e4">print</a>(<a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a>);</div>
<div class="line"> <a class="code" href="gsDebug_8h.html#af6177e1e282640c3cb9175565f84a432">gsInfo</a> << <span class="stringliteral">"\n\n"</span>;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"></div>
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