added templated implementation of vertex loading, to avoid redundance

also added functionality to load vertex colors

PluginCollection-FilePlugins/Plugin-Assimp/AssimpPluginT.cc

+/*===========================================================================*\
+ *                                                                           *
+ *                             OpenFlipper                                   *
+ *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
+ *           Department of Computer Graphics and Multimedia                  *
+ *                          All rights reserved.                             *
+ *                            www.openflipper.org                            *
+ *                                                                           *
+ *---------------------------------------------------------------------------*
+ * This file is part of OpenFlipper.                                         *
+ *---------------------------------------------------------------------------*
+ *                                                                           *
+ * Redistribution and use in source and binary forms, with or without        *
+ * modification, are permitted provided that the following conditions        *
+ * are met:                                                                  *
+ *                                                                           *
+ * 1. Redistributions of source code must retain the above copyright notice, *
+ *    this list of conditions and the following disclaimer.                  *
+ *                                                                           *
+ * 2. Redistributions in binary form must reproduce the above copyright      *
+ *    notice, this list of conditions and the following disclaimer in the    *
+ *    documentation and/or other materials provided with the distribution.   *
+ *                                                                           *
+ * 3. Neither the name of the copyright holder nor the names of its          *
+ *    contributors may be used to endorse or promote products derived from   *
+ *    this software without specific prior written permission.               *
+ *                                                                           *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       *
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A           *
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,  *
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+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    *
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING      *
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS        *
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              *
+ *                                                                           *
+\*===========================================================================*/
+
+#pragma once
+
+template <typename Mesh>
+void AssimpPlugin::mapVertices(Mesh *_polyMesh, aiMesh *_mesh) {
+  vertexHandles_.clear();
+    std::cout<<"mesh has "<<_mesh->GetNumColorChannels()<<" color channels"<<std::endl;
+    bool tc1requested = false;
+    bool tc2requested = false;
+    bool tc3requested = false;
+    //
+  for (unsigned int i = 0; i < _mesh->mNumVertices; ++i) {
+    vertexHandles_[i] = _polyMesh->add_vertex(ACG::Vec3d(_mesh->mVertices[i].x, _mesh->mVertices[i].y, _mesh->mVertices[i].z));
+
+    //load vertexColors
+    for(unsigned int j = 0 ; j < _mesh->GetNumColorChannels(); ++j)
+    {
+      if(options_.loadVertexColorOption_ && _mesh->HasVertexColors(j))
+        _polyMesh->set_color(vertexHandles_[i], PolyMesh::Color(_mesh->mColors[j][i].r, _mesh->mColors[j][i].g, _mesh->mColors[j][i].b, _mesh->mColors[j][i].a));
+    }
+    
+    //load texCoords 
+    for(unsigned int j = 0 ; j < _mesh->GetNumUVChannels(); ++j)
+    {
+      if(options_.loadTexCoordsOption_ && _mesh->HasTextureCoords(j))
+      {
+        if(_mesh->mNumUVComponents[j] == 1)
+        {
+          if(!tc1requested)
+          {
+            _polyMesh->request_vertex_texcoords1D();
+            tc1requested = true;
+          }
+          _polyMesh->set_texcoord1D(vertexHandles_[i], PolyMesh::TexCoord1D(_mesh->mTextureCoords[j][i].x));
+        }
+        if(_mesh->mNumUVComponents[j] == 2)
+        {
+          if(!tc2requested)
+          {
+          _polyMesh->request_vertex_texcoords2D();
+          tc2requested = true;
+          }
+          _polyMesh->set_texcoord2D(vertexHandles_[i], PolyMesh::TexCoord2D(_mesh->mTextureCoords[j][i].x, _mesh->mTextureCoords[j][i].y));
+        }
+        if(_mesh->mNumUVComponents[j] == 3)
+        {
+          if(!tc3requested)
+          {
+            _polyMesh->request_vertex_texcoords3D();
+            tc3requested = true;
+          }
+          _polyMesh->set_texcoord3D(vertexHandles_[i], PolyMesh::TexCoord3D(_mesh->mTextureCoords[j][i].x, _mesh->mTextureCoords[j][i].y, _mesh->mTextureCoords[j][i].z));
+        }
+      }
+    }
+  }
+}