Create openMVS.build

vcglib/apps/sample/trimesh_attribute/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13)
+project(trimesh_attribute)
+
+if (VCG_HEADER_ONLY)
+	set(SOURCES
+		trimesh_attribute.cpp)
+endif()
+
+add_executable(trimesh_attribute
+	${SOURCES})
+
+target_link_libraries(
+	trimesh_attribute
+	PUBLIC
+		vcglib
+	)

vcglib/apps/sample/trimesh_attribute/trimesh_attribute.cpp

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+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2016                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/*! \file trimesh_attribute.cpp
+\ingroup code_sample
+
+\brief the minimal example of using the attributes
+
+Attributes are a simple mechanism to associate user-defined 'attributes' to the simplicies and to the mesh.
+See the page '\ref attributes' for more details.
+*/
+
+#include<vcg/complex/complex.h>
+class MyEdge;
+class MyFace;
+class MyVertex;
+struct MyUsedTypes : public vcg::UsedTypes<	vcg::Use<MyVertex>		::AsVertexType,
+                                            vcg::Use<MyFace>			::AsFaceType>{};
+
+class MyVertex  : public vcg::Vertex< MyUsedTypes, vcg::vertex::Coord3f,vcg::vertex::Normal3f>{};
+class MyFace    : public vcg::Face< MyUsedTypes, vcg::face::VertexRef, vcg::face::Normal3f> {};
+
+class MyMesh : public vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> > {};
+
+int main()
+{
+  MyMesh m;
+  //! [Adding an attribute]
+  // add a per-vertex attribute with type float named "Irradiance"
+  MyMesh::PerVertexAttributeHandle<float> named_hv = vcg::tri::Allocator<MyMesh>:: GetPerVertexAttribute<float> (m,std::string("Irradiance"));
+  //! [Adding an attribute]
+
+  // add a per-vertex attribute with type float named "Radiosity"
+  vcg::tri::Allocator<MyMesh>:: GetPerVertexAttribute<float> (m,std::string("Radiosity"));
+
+  // add a per-vertex attribute with type bool and no name specified
+  MyMesh::PerVertexAttributeHandle<bool> anon_hv = vcg::tri::Allocator<MyMesh>:: GetPerVertexAttribute<bool> (m);
+
+  // add a per-face attribute with type bool and no name specified
+  MyMesh::PerFaceAttributeHandle<bool> anon_hf = vcg::tri::Allocator<MyMesh>:: GetPerFaceAttribute<bool> (m);
+
+  //! [Using an attribute]
+  MyMesh::VertexIterator vi; int i;
+  for(i=0, vi   = m.vert.begin(); vi != m.vert.end(); ++vi,++i){
+   named_hv[vi]  = 1.0f;  // [] operator takes a iterator
+   named_hv[*vi] = 1.0f;  //                or a MyMesh::VertexType object
+   named_hv[&*vi]= 1.0f;  //                or a pointer to it
+   named_hv[i]   = 1.0f;  //                or an integer index
+  }
+  //! [Using an attribute]
+
+  vcg::tri::Allocator<MyMesh>::ClearPerVertexAttribute<float>(m,named_hv);
+
+  // query if an attribute is present or not
+  bool hasRadiosity = vcg::tri::HasPerVertexAttribute(m,"Radiosity");
+
+  // obtain another handle of a previously attribute
+   MyMesh::PerVertexAttributeHandle<float> ret_hv = vcg::tri::Allocator<MyMesh>:: FindPerVertexAttribute<float>(m,"Radiosity");
+
+  //! [Per Mesh attribute]
+  // you can also have PerMesh attributes
+  MyMesh::PerMeshAttributeHandle<int> hm = vcg::tri::Allocator<MyMesh>:: GetPerMeshAttribute<int> (m,std::string("ADummyIntegerAttribute"));
+  // PerMesh attributes are accessed directly using the handle itself
+  hm() = 10;
+  //! [Per Mesh attribute]
+
+  //! [Deleting an attribute]
+  // delete an attribute by name
+  vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m, "Radiosity");
+
+  // delete an attribute by handle
+  vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m, anon_hv);
+  //! [Deleting an attribute]
+
+  bool res;
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,named_hv);         printf("Is Valid: %s\n",res?"Yes":"No");
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,anon_hf); printf("Is Valid: %s\n",res?"Yes":"No");
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,hm); printf("Is Valid: %s\n",res?"Yes":"No");
+  vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,ret_hv);
+  vcg::tri::Allocator<MyMesh>::DeletePerFaceAttribute(m,anon_hf);
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,named_hv);         printf("Is Valid: %s\n",res?"Yes":"No");
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,anon_hf); printf("Is Valid: %s\n",res?"Yes":"No");
+  res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,hm); printf("Is Valid: %s\n",res?"Yes":"No");
+}

vcglib/apps/sample/trimesh_attribute/trimesh_attribute.pro

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+include(../common.pri)
+TARGET = trimesh_attribute
+SOURCES += trimesh_attribute.cpp