add vcglib

vcglib/apps/sample/trimesh_normal/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.13)
+project(trimesh_normal)
+
+if (VCG_HEADER_ONLY)
+	set(SOURCES
+		trimesh_normal.cpp)
+endif()
+
+add_executable(trimesh_normal
+	${SOURCES})
+
+target_link_libraries(
+	trimesh_normal
+	PUBLIC
+		vcglib
+	)

vcglib/apps/sample/trimesh_normal/trimesh_normal.cpp

@@ -0,0 +1,82 @@
+/****************************************************************************
+* 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_normal.cpp
+\ingroup code_sample
+
+\brief An example of all the methods for computing normals over a mesh.
+
+*/
+#include<vcg/complex/complex.h>
+
+#include<wrap/io_trimesh/import_off.h>
+
+using namespace vcg;
+using namespace std;
+
+class MyEdge;
+class MyFace;
+class MyVertex;
+struct MyUsedTypes : public UsedTypes<	Use<MyVertex>   ::AsVertexType,
+                                        Use<MyEdge>     ::AsEdgeType,
+                                        Use<MyFace>     ::AsFaceType>{};
+
+class MyVertex  : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags  >{};
+class MyFace    : public Face< MyUsedTypes, face::FFAdj,  face::VertexRef, face::BitFlags > {};
+class MyEdge    : public Edge<MyUsedTypes>{};
+class MyMesh    : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge>  > {};
+
+int main( int argc, char **argv )
+{
+  if(argc<2)
+  {
+    printf("Usage trimesh_base <meshfilename.obj>\n");
+    return -1;
+  }
+
+  MyMesh m;
+
+  if(tri::io::ImporterOFF<MyMesh>::Open(m,argv[1])!=0)
+  {
+    printf("Error reading file  %s\n",argv[1]);
+    exit(0);
+  }
+
+  Matrix44f m44 = Matrix44f::Identity();
+
+  tri::UpdateNormal<MyMesh>::PerVertexClear(m);
+  tri::UpdateNormal<MyMesh>::PerVertex(m);
+  tri::UpdateNormal<MyMesh>::PerVertexAngleWeighted(m);
+  tri::UpdateNormal<MyMesh>::PerVertexNelsonMaxWeighted(m);
+  tri::UpdateNormal<MyMesh>::PerFace(m);
+  tri::UpdateNormal<MyMesh>::PerVertexFromCurrentFaceNormal(m);
+  tri::UpdateNormal<MyMesh>::PerFaceFromCurrentVertexNormal(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerVertex(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerFace(m);
+  tri::UpdateNormal<MyMesh>::NormalizePerFaceByArea(m);
+  tri::UpdateNormal<MyMesh>::PerBitQuadFaceNormalized(m);
+  tri::UpdateNormal<MyMesh>::PerVertexMatrix(m,m44);
+  tri::UpdateNormal<MyMesh>::PerFaceMatrix(m,m44);
+  tri::UpdateNormal<MyMesh>::PerWedgeCrease(m, math::ToRad(45.0f));
+
+  return 0;
+}

vcglib/apps/sample/trimesh_normal/trimesh_normal.pro

@@ -0,0 +1,3 @@
+include(../common.pri)
+TARGET = trimesh_normal
+SOURCES += trimesh_normal.cpp