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<h1 class="title">osd_tutorial_0.cpp</h1>
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<h1 class="articleContentTitle">osd_tutorial_0.cpp</h1>
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<p><a class="reference external" href="https://github.com/PixarAnimationStudios/OpenSubdiv/blob/release/tutorials/osd/tutorial_0/osd_tutorial_0.cpp">https://github.com/PixarAnimationStudios/OpenSubdiv/blob/release/tutorials/osd/tutorial_0/osd_tutorial_0.cpp</a></p>
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<pre class="code c++ literal-block">
<span class="comment single">//------------------------------------------------------------------------------
// Tutorial description:
//
// This tutorial demonstrates the manipulation of Osd Evaluator and
// BufferDescriptor.
//
</span><span class="whitespace">
</span><span class="comment preproc">#include</span><span class="whitespace"> </span><span class="comment preprocfile"><opensubdiv/far/topologyDescriptor.h></span><span class="comment preproc">
#include</span><span class="whitespace"> </span><span class="comment preprocfile"><opensubdiv/far/stencilTableFactory.h></span><span class="comment preproc">
#include</span><span class="whitespace"> </span><span class="comment preprocfile"><opensubdiv/osd/cpuEvaluator.h></span><span class="comment preproc">
#include</span><span class="whitespace"> </span><span class="comment preprocfile"><opensubdiv/osd/cpuVertexBuffer.h></span><span class="comment preproc">
</span><span class="whitespace">
</span><span class="comment preproc">#include</span><span class="whitespace"> </span><span class="comment preprocfile"><cstdio></span><span class="comment preproc">
#include</span><span class="whitespace"> </span><span class="comment preprocfile"><cstring></span><span class="comment preproc">
</span><span class="whitespace">
</span><span class="comment single">//------------------------------------------------------------------------------
// Cube geometry from catmark_cube.h
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="keyword type">float</span><span class="whitespace"> </span><span class="name">g_verts</span><span class="punctuation">[</span><span class="literal number integer">24</span><span class="punctuation">]</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number float">0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number float">-0.5f</span><span class="punctuation">};</span><span class="whitespace">
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">g_nverts</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="literal number integer">8</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">g_nfaces</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="literal number integer">6</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">g_vertsperface</span><span class="punctuation">[</span><span class="literal number integer">6</span><span class="punctuation">]</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="whitespace"> </span><span class="punctuation">};</span><span class="whitespace">
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">g_vertIndices</span><span class="punctuation">[</span><span class="literal number integer">24</span><span class="punctuation">]</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace"> </span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">1</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">2</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number integer">2</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">5</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number integer">4</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">5</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">7</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">6</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number integer">6</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">7</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">1</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number integer">1</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">7</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">5</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="literal number integer">6</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">2</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">4</span><span class="whitespace"> </span><span class="punctuation">};</span><span class="whitespace">
</span><span class="keyword">using</span><span class="whitespace"> </span><span class="keyword">namespace</span><span class="whitespace"> </span><span class="name namespace">OpenSubdiv</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefiner</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">createTopologyRefiner</span><span class="punctuation">(</span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">maxlevel</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="comment single">//------------------------------------------------------------------------------
</span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name function">main</span><span class="punctuation">(</span><span class="keyword type">int</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="keyword type">char</span><span class="whitespace"> </span><span class="operator">**</span><span class="punctuation">)</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace">
</span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">maxlevel</span><span class="operator">=</span><span class="literal number integer">2</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">nCoarseVerts</span><span class="operator">=</span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">nRefinedVerts</span><span class="operator">=</span><span class="literal number integer">0</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="comment single">//
</span><span class="whitespace"> </span><span class="comment single">// Setup phase
</span><span class="whitespace"> </span><span class="comment single">//
</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">StencilTable</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">stencilTable</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name builtin">NULL</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="punctuation">{</span><span class="whitespace"> </span><span class="comment single">// Setup Far::StencilTable
</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefiner</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">refiner</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">createTopologyRefiner</span><span class="punctuation">(</span><span class="name">maxlevel</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="comment single">// Setup a factory to create FarStencilTable (for more details see
</span><span class="whitespace"> </span><span class="comment single">// Far tutorials)
</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">StencilTableFactory</span><span class="operator">::</span><span class="name">Options</span><span class="whitespace"> </span><span class="name">options</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">options</span><span class="punctuation">.</span><span class="name">generateOffsets</span><span class="operator">=</span><span class="name builtin">true</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">options</span><span class="punctuation">.</span><span class="name">generateIntermediateLevels</span><span class="operator">=</span><span class="name builtin">false</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">stencilTable</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">StencilTableFactory</span><span class="operator">::</span><span class="name">Create</span><span class="punctuation">(</span><span class="operator">*</span><span class="name">refiner</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">options</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="name">nCoarseVerts</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">refiner</span><span class="operator">-></span><span class="name">GetLevel</span><span class="punctuation">(</span><span class="literal number integer">0</span><span class="punctuation">).</span><span class="name">GetNumVertices</span><span class="punctuation">();</span><span class="whitespace">
</span><span class="name">nRefinedVerts</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">stencilTable</span><span class="operator">-></span><span class="name">GetNumStencils</span><span class="punctuation">();</span><span class="whitespace">
</span><span class="comment single">// We are done with Far: cleanup table
</span><span class="whitespace"> </span><span class="keyword">delete</span><span class="whitespace"> </span><span class="name">refiner</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="comment single">// Setup a buffer for vertex primvar data:
</span><span class="whitespace"> </span><span class="name">Osd</span><span class="operator">::</span><span class="name">CpuVertexBuffer</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">vbuffer</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace">
</span><span class="name">Osd</span><span class="operator">::</span><span class="name">CpuVertexBuffer</span><span class="operator">::</span><span class="name">Create</span><span class="punctuation">(</span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">nCoarseVerts</span><span class="whitespace"> </span><span class="operator">+</span><span class="whitespace"> </span><span class="name">nRefinedVerts</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="comment single">//
</span><span class="whitespace"> </span><span class="comment single">// Execution phase (every frame)
</span><span class="whitespace"> </span><span class="comment single">//
</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace">
</span><span class="comment single">// Pack the control vertex data at the start of the vertex buffer
</span><span class="whitespace"> </span><span class="comment single">// and update every time control data changes
</span><span class="whitespace"> </span><span class="name">vbuffer</span><span class="operator">-></span><span class="name">UpdateData</span><span class="punctuation">(</span><span class="name">g_verts</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">nCoarseVerts</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="name">Osd</span><span class="operator">::</span><span class="name">BufferDescriptor</span><span class="whitespace"> </span><span class="name">srcDesc</span><span class="punctuation">(</span><span class="literal number integer">0</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="name">Osd</span><span class="operator">::</span><span class="name">BufferDescriptor</span><span class="whitespace"> </span><span class="name">dstDesc</span><span class="punctuation">(</span><span class="name">nCoarseVerts</span><span class="operator">*</span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="comment single">// Launch the computation
</span><span class="whitespace"> </span><span class="name">Osd</span><span class="operator">::</span><span class="name">CpuEvaluator</span><span class="operator">::</span><span class="name">EvalStencils</span><span class="punctuation">(</span><span class="name">vbuffer</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">srcDesc</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">vbuffer</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">dstDesc</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">stencilTable</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="punctuation">{</span><span class="whitespace"> </span><span class="comment single">// Visualization with Maya : print a MEL script that generates particles
</span><span class="whitespace"> </span><span class="comment single">// at the location of the refined vertices
</span><span class="whitespace">
</span><span class="name">printf</span><span class="punctuation">(</span><span class="literal string">"particle "</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="keyword type">float</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">refinedVerts</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">vbuffer</span><span class="operator">-></span><span class="name">BindCpuBuffer</span><span class="punctuation">()</span><span class="whitespace"> </span><span class="operator">+</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="operator">*</span><span class="name">nCoarseVerts</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="keyword">for</span><span class="whitespace"> </span><span class="punctuation">(</span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">i</span><span class="operator">=</span><span class="literal number integer">0</span><span class="punctuation">;</span><span class="whitespace"> </span><span class="name">i</span><span class="operator"><</span><span class="name">nRefinedVerts</span><span class="punctuation">;</span><span class="whitespace"> </span><span class="operator">++</span><span class="name">i</span><span class="punctuation">)</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace">
</span><span class="keyword type">float</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">vert</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">refinedVerts</span><span class="whitespace"> </span><span class="operator">+</span><span class="whitespace"> </span><span class="literal number integer">3</span><span class="operator">*</span><span class="name">i</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">printf</span><span class="punctuation">(</span><span class="literal string">"-p %f %f %f</span><span class="literal string escape">\n</span><span class="literal string">"</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">vert</span><span class="punctuation">[</span><span class="literal number integer">0</span><span class="punctuation">],</span><span class="whitespace"> </span><span class="name">vert</span><span class="punctuation">[</span><span class="literal number integer">1</span><span class="punctuation">],</span><span class="whitespace"> </span><span class="name">vert</span><span class="punctuation">[</span><span class="literal number integer">2</span><span class="punctuation">]);</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="name">printf</span><span class="punctuation">(</span><span class="literal string">"-c 1;</span><span class="literal string escape">\n</span><span class="literal string">"</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="keyword">delete</span><span class="whitespace"> </span><span class="name">stencilTable</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="keyword">delete</span><span class="whitespace"> </span><span class="name">vbuffer</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="comment single">//------------------------------------------------------------------------------
</span><span class="keyword">static</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefiner</span><span class="whitespace"> </span><span class="keyword">const</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace">
</span><span class="name">createTopologyRefiner</span><span class="punctuation">(</span><span class="keyword type">int</span><span class="whitespace"> </span><span class="name">maxlevel</span><span class="punctuation">)</span><span class="whitespace"> </span><span class="punctuation">{</span><span class="whitespace">
</span><span class="comment single">// Populate a topology descriptor with our raw data
</span><span class="whitespace">
</span><span class="keyword">typedef</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyDescriptor</span><span class="whitespace"> </span><span class="name">Descriptor</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">Sdc</span><span class="operator">::</span><span class="name">SchemeType</span><span class="whitespace"> </span><span class="name">type</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">OpenSubdiv</span><span class="operator">::</span><span class="name">Sdc</span><span class="operator">::</span><span class="name">SCHEME_CATMARK</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">Sdc</span><span class="operator">::</span><span class="name">Options</span><span class="whitespace"> </span><span class="name">options</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">options</span><span class="punctuation">.</span><span class="name">SetVtxBoundaryInterpolation</span><span class="punctuation">(</span><span class="name">Sdc</span><span class="operator">::</span><span class="name">Options</span><span class="operator">::</span><span class="name">VTX_BOUNDARY_EDGE_ONLY</span><span class="punctuation">);</span><span class="whitespace">
</span><span class="name">Descriptor</span><span class="whitespace"> </span><span class="name">desc</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">desc</span><span class="punctuation">.</span><span class="name">numVertices</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">g_nverts</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">desc</span><span class="punctuation">.</span><span class="name">numFaces</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">g_nfaces</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">desc</span><span class="punctuation">.</span><span class="name">numVertsPerFace</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">g_vertsperface</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="name">desc</span><span class="punctuation">.</span><span class="name">vertIndicesPerFace</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace"> </span><span class="name">g_vertIndices</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="comment single">// Instantiate a FarTopologyRefiner from the descriptor
</span><span class="whitespace"> </span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefiner</span><span class="whitespace"> </span><span class="operator">*</span><span class="whitespace"> </span><span class="name">refiner</span><span class="whitespace"> </span><span class="operator">=</span><span class="whitespace">
</span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefinerFactory</span><span class="operator"><</span><span class="name">Descriptor</span><span class="operator">>::</span><span class="name">Create</span><span class="punctuation">(</span><span class="name">desc</span><span class="punctuation">,</span><span class="whitespace">
</span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefinerFactory</span><span class="operator"><</span><span class="name">Descriptor</span><span class="operator">>::</span><span class="name">Options</span><span class="punctuation">(</span><span class="name">type</span><span class="punctuation">,</span><span class="whitespace"> </span><span class="name">options</span><span class="punctuation">));</span><span class="whitespace">
</span><span class="comment single">// Uniformly refine the topology up to 'maxlevel'
</span><span class="whitespace"> </span><span class="name">refiner</span><span class="operator">-></span><span class="name">RefineUniform</span><span class="punctuation">(</span><span class="name">Far</span><span class="operator">::</span><span class="name">TopologyRefiner</span><span class="operator">::</span><span class="name">UniformOptions</span><span class="punctuation">(</span><span class="name">maxlevel</span><span class="punctuation">));</span><span class="whitespace">
</span><span class="keyword">return</span><span class="whitespace"> </span><span class="name">refiner</span><span class="punctuation">;</span><span class="whitespace">
</span><span class="punctuation">}</span><span class="whitespace">
</span><span class="comment single">//------------------------------------------------------------------------------</span>
</pre>
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