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<h1>Source code for files3d</h1><div class="highlight"><pre>
<span></span><span class="ch">#!/usr/bin/python2.7</span>
<span class="c1"># -*- coding: utf-8 -*-</span>
<span class="sd">""" </span>
<span class="sd">Modules to handle supported 3D file formats. </span>
<span class="sd">**Project Name:** MakeHuman</span>
<span class="sd">**Product Home Page:** http://www.makehuman.org/</span>
<span class="sd">**Code Home Page:** https://bitbucket.org/MakeHuman/makehuman/</span>
<span class="sd">**Authors:** Joel Palmius, Marc Flerackers</span>
<span class="sd">**Copyright(c):** MakeHuman Team 2001-2017</span>
<span class="sd">**Licensing:** AGPL3</span>
<span class="sd"> This file is part of MakeHuman (www.makehuman.org).</span>
<span class="sd"> This program is free software: you can redistribute it and/or modify</span>
<span class="sd"> it under the terms of the GNU Affero General Public License as</span>
<span class="sd"> published by the Free Software Foundation, either version 3 of the</span>
<span class="sd"> License, or (at your option) any later version.</span>
<span class="sd"> This program is distributed in the hope that it will be useful,</span>
<span class="sd"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="sd"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="sd"> GNU Affero General Public License for more details.</span>
<span class="sd"> You should have received a copy of the GNU Affero General Public License</span>
<span class="sd"> along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
<span class="sd">Abstract</span>
<span class="sd">--------</span>
<span class="sd">.. image:: ../images/files_data.png</span>
<span class="sd"> :align: right </span>
<span class="sd"> </span>
<span class="sd">This Module handles the 3D file formats supported by MakeHuman. It is planned that this module </span>
<span class="sd">will implement a range of functions to handle most common 3D file formats in the future. </span>
<span class="sd">The functions within this module should all follow a standard pattern</span>
<span class="sd">designed to facilitate the implementation of new interfaces.</span>
<span class="sd">This module will include functions to:</span>
<span class="sd"> </span>
<span class="sd"> - Transpose imported 3D data into a standard internal format for </span>
<span class="sd"> each of the 3D file formats supported by the MakeHuman import </span>
<span class="sd"> functions.</span>
<span class="sd"> - Generate 3D data structures that correspond to 3D file formats </span>
<span class="sd"> supported by the makeHuman export function.</span>
<span class="sd"> - Provide generic transformation utilities such as the </span>
<span class="sd"> dataTo3Dobject() function which takes an object defined </span>
<span class="sd"> in the standard internal format and makes it visible to the user. </span>
<span class="sd">The image on the right shows the general schema for implementing new MakeHuman importers. </span>
<span class="sd">The wavefrontToData_simple() function below can be used as a template for developing </span>
<span class="sd">new functions. </span>
<span class="sd">Each importer function must return the 3d data in a standard format </span>
<span class="sd">(a list [verts,vertsSharedFaces,vertsUV,faceGroups,faceGroupsNames] ).</span>
<span class="sd">The dataTo3Dobject() function can then be used to convert it into an object that </span>
<span class="sd">is visible to the user through the GUI.</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">os.path</span>
<span class="kn">import</span> <span class="nn">module3d</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="kn">import</span> <span class="nn">log</span>
<span class="kn">import</span> <span class="nn">wavefront</span>
<span class="kn">from</span> <span class="nn">getpath</span> <span class="k">import</span> <span class="n">isSubPath</span><span class="p">,</span> <span class="n">getPath</span>
<span class="k">def</span> <span class="nf">packStringList</span><span class="p">(</span><span class="n">strings</span><span class="p">):</span>
<span class="n">text</span> <span class="o">=</span> <span class="s1">''</span>
<span class="n">index</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">string</span> <span class="ow">in</span> <span class="n">strings</span><span class="p">:</span>
<span class="n">index</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">text</span><span class="p">))</span>
<span class="n">text</span> <span class="o">+=</span> <span class="n">string</span>
<span class="n">text</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">fromstring</span><span class="p">(</span><span class="n">text</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="s1">'S1'</span><span class="p">)</span>
<span class="n">index</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">(</span><span class="n">index</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="n">np</span><span class="o">.</span><span class="n">uint32</span><span class="p">)</span>
<span class="k">return</span> <span class="n">text</span><span class="p">,</span> <span class="n">index</span>
<span class="k">def</span> <span class="nf">unpackStringList</span><span class="p">(</span><span class="n">text</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
<span class="n">strings</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">last</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">index</span><span class="p">:</span>
<span class="k">if</span> <span class="n">last</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">text</span><span class="p">[</span><span class="n">last</span><span class="p">:</span><span class="n">i</span><span class="p">]</span><span class="o">.</span><span class="n">tostring</span><span class="p">()</span>
<span class="n">strings</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="n">last</span> <span class="o">=</span> <span class="n">i</span>
<span class="k">if</span> <span class="n">last</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">text</span><span class="p">[</span><span class="n">last</span><span class="p">:]</span><span class="o">.</span><span class="n">tostring</span><span class="p">()</span>
<span class="n">strings</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="k">return</span> <span class="n">strings</span>
<span class="k">def</span> <span class="nf">saveBinaryMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">path</span><span class="p">):</span>
<span class="n">fgstr</span><span class="p">,</span> <span class="n">fgidx</span> <span class="o">=</span> <span class="n">packStringList</span><span class="p">(</span><span class="n">fg</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">fg</span> <span class="ow">in</span> <span class="n">obj</span><span class="o">.</span><span class="n">_faceGroups</span><span class="p">)</span>
<span class="n">vars_</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span>
<span class="n">coord</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">coord</span><span class="p">,</span>
<span class="n">vface</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">vface</span><span class="p">,</span>
<span class="n">nfaces</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">nfaces</span><span class="p">,</span>
<span class="n">texco</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">texco</span><span class="p">,</span>
<span class="n">fvert</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">fvert</span><span class="p">,</span>
<span class="n">group</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">group</span><span class="p">,</span>
<span class="n">fgstr</span> <span class="o">=</span> <span class="n">fgstr</span><span class="p">,</span>
<span class="n">fgidx</span> <span class="o">=</span> <span class="n">fgidx</span><span class="p">,</span>
<span class="n">MAX_FACES</span> <span class="o">=</span> <span class="p">[</span><span class="n">obj</span><span class="o">.</span><span class="n">MAX_FACES</span><span class="p">])</span>
<span class="k">if</span> <span class="n">obj</span><span class="o">.</span><span class="n">has_uv</span><span class="p">:</span>
<span class="n">vars_</span><span class="p">[</span><span class="s1">'fuvs'</span><span class="p">]</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">fuvs</span>
<span class="n">np</span><span class="o">.</span><span class="n">savez_compressed</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="o">**</span><span class="n">vars_</span><span class="p">)</span>
<span class="n">os</span><span class="o">.</span><span class="n">utime</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="c1"># Ensure modification time is updated</span>
<span class="k">def</span> <span class="nf">loadBinaryMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">path</span><span class="p">):</span>
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Loading binary mesh </span><span class="si">%s</span><span class="s2">."</span><span class="p">,</span> <span class="n">path</span><span class="p">)</span>
<span class="c1">#log.debug('loadBinaryMesh: np.load()')</span>
<span class="n">npzfile</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="k">if</span> <span class="s1">'MAX_FACES'</span> <span class="ow">in</span> <span class="n">npzfile</span><span class="p">:</span>
<span class="c1"># Set pole count if stored</span>
<span class="n">obj</span><span class="o">.</span><span class="n">MAX_FACES</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">npzfile</span><span class="p">[</span><span class="s1">'MAX_FACES'</span><span class="p">][</span><span class="mi">0</span><span class="p">])</span>
<span class="c1">#log.debug('loadBinaryMesh: loading arrays')</span>
<span class="n">coord</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'coord'</span><span class="p">]</span>
<span class="n">obj</span><span class="o">.</span><span class="n">setCoords</span><span class="p">(</span><span class="n">coord</span><span class="p">)</span>
<span class="n">texco</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'texco'</span><span class="p">]</span>
<span class="n">obj</span><span class="o">.</span><span class="n">setUVs</span><span class="p">(</span><span class="n">texco</span><span class="p">)</span>
<span class="n">fvert</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'fvert'</span><span class="p">]</span>
<span class="n">fuvs</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'fuvs'</span><span class="p">]</span> <span class="k">if</span> <span class="s1">'fuvs'</span> <span class="ow">in</span> <span class="n">npzfile</span><span class="o">.</span><span class="n">files</span> <span class="k">else</span> <span class="kc">None</span>
<span class="n">group</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'group'</span><span class="p">]</span>
<span class="n">obj</span><span class="o">.</span><span class="n">setFaces</span><span class="p">(</span><span class="n">fvert</span><span class="p">,</span> <span class="n">fuvs</span><span class="p">,</span> <span class="n">group</span><span class="p">,</span> <span class="n">skipUpdate</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">vface</span><span class="p">[:,:]</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'vface'</span><span class="p">][:,:</span><span class="n">obj</span><span class="o">.</span><span class="n">MAX_FACES</span><span class="p">]</span>
<span class="n">obj</span><span class="o">.</span><span class="n">nfaces</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'nfaces'</span><span class="p">]</span>
<span class="c1">#log.debug('loadBinaryMesh: loaded arrays')</span>
<span class="n">fgstr</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'fgstr'</span><span class="p">]</span>
<span class="n">fgidx</span> <span class="o">=</span> <span class="n">npzfile</span><span class="p">[</span><span class="s1">'fgidx'</span><span class="p">]</span>
<span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">unpackStringList</span><span class="p">(</span><span class="n">fgstr</span><span class="p">,</span> <span class="n">fgidx</span><span class="p">):</span>
<span class="n">obj</span><span class="o">.</span><span class="n">createFaceGroup</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="k">del</span> <span class="n">fgstr</span><span class="p">,</span> <span class="n">fgidx</span>
<span class="c1">#log.debug('loadBinaryMesh: unpacked facegroups')</span>
<span class="n">obj</span><span class="o">.</span><span class="n">calcNormals</span><span class="p">()</span>
<span class="c1">#log.debug('loadBinaryMesh: calculated normals')</span>
<span class="n">obj</span><span class="o">.</span><span class="n">updateIndexBuffer</span><span class="p">()</span>
<span class="c1">#log.debug('loadBinaryMesh: built index buffer for rendering')</span>
<div class="viewcode-block" id="loadTextMesh"><a class="viewcode-back" href="../module_files3d.html#files3d.loadTextMesh">[docs]</a><span class="k">def</span> <span class="nf">loadTextMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">path</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Parse and load a Wavefront OBJ file as mesh.</span>
<span class="sd"> """</span>
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Loading ASCII mesh </span><span class="si">%s</span><span class="s2">."</span><span class="p">,</span> <span class="n">path</span><span class="p">)</span>
<span class="c1">#log.debug('loadTextMesh: begin')</span>
<span class="n">wavefront</span><span class="o">.</span><span class="n">loadObjFile</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="n">obj</span><span class="p">)</span></div>
<span class="c1">#log.debug('loadTextMesh: end')</span>
<div class="viewcode-block" id="loadMesh"><a class="viewcode-back" href="../module_files3d.html#files3d.loadMesh">[docs]</a><span class="k">def</span> <span class="nf">loadMesh</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="n">loadColors</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">maxFaces</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">obj</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> This function loads the specified mesh object into internal MakeHuman data </span>
<span class="sd"> structures, and returns it. The loaded file should be in Wavefront OBJ </span>
<span class="sd"> format.</span>
<span class="sd"> </span>
<span class="sd"> Parameters:</span>
<span class="sd"> -----------</span>
<span class="sd"> </span>
<span class="sd"> path: </span>
<span class="sd"> *String*. The file system path to the file containing the object to load.</span>
<span class="sd"> Note: loadColors is currently unused</span>
<span class="sd"> maxFaces:</span>
<span class="sd"> *uint* Number of faces per vertex (pole), None for default (min 4)</span>
<span class="sd"> """</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
<span class="k">if</span> <span class="n">obj</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">module3d</span><span class="o">.</span><span class="n">Object3D</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">maxFaces</span><span class="p">:</span>
<span class="n">obj</span><span class="o">.</span><span class="n">MAX_FACES</span> <span class="o">=</span> <span class="n">maxFaces</span>
<span class="n">obj</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="n">path</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">npzpath</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span><span class="n">path</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="s1">'.npz'</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">npzpath</span><span class="p">):</span>
<span class="n">log</span><span class="o">.</span><span class="n">message</span><span class="p">(</span><span class="s1">'compiled file missing: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'compiled file missing: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">path</span><span class="p">)</span> <span class="ow">and</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">getmtime</span><span class="p">(</span><span class="n">path</span><span class="p">)</span> <span class="o">></span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">getmtime</span><span class="p">(</span><span class="n">npzpath</span><span class="p">):</span>
<span class="n">log</span><span class="o">.</span><span class="n">message</span><span class="p">(</span><span class="s1">'compiled file out of date: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'compiled file out of date: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="n">loadBinaryMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="n">showTrace</span> <span class="o">=</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="ne">RuntimeError</span><span class="p">)</span>
<span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"Problem loading binary mesh: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">e</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="n">showTrace</span><span class="p">)</span>
<span class="n">loadTextMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">path</span><span class="p">)</span>
<span class="k">if</span> <span class="n">isSubPath</span><span class="p">(</span><span class="n">npzpath</span><span class="p">,</span> <span class="n">getPath</span><span class="p">(</span><span class="s1">''</span><span class="p">)):</span>
<span class="c1"># Only write compiled binary meshes to user data path</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">saveBinaryMesh</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">except</span> <span class="n">StandardError</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">notice</span><span class="p">(</span><span class="s1">'unable to save compiled mesh: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">'Not writing compiled meshes to system paths (</span><span class="si">%s</span><span class="s1">).'</span><span class="p">,</span> <span class="n">npzpath</span><span class="p">)</span>
<span class="k">except</span><span class="p">:</span>
<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'Unable to load obj file: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="k">return</span> <span class="n">obj</span></div>
</pre></div>
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