From b59781584831e859b314bd4e84d9e827bfac2dfb Mon Sep 17 00:00:00 2001
From: "T.Alderighi" <thomasalderighi@gmail.com>
Date: Tue, 8 May 2018 16:03:30 +0200
Subject: [PATCH] tet export

---
 wrap/io_tetramesh/export_tet.h | 117 +++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 wrap/io_tetramesh/export_tet.h

diff --git a/wrap/io_tetramesh/export_tet.h b/wrap/io_tetramesh/export_tet.h
new file mode 100644
index 00000000..145cddc8
--- /dev/null
+++ b/wrap/io_tetramesh/export_tet.h
@@ -0,0 +1,117 @@
+/****************************************************************************
+* 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.                                                         *
+*                                                                           *
+****************************************************************************/
+
+/**
+@name Load and Save in Tetgen File format
+*/
+//@{
+
+#ifndef __VCGLIB_TETRAEXPORT_TET
+#define __VCGLIB_TETRAEXPORT_TET
+
+#include<wrap/io_trimesh/precision.h>
+
+#include <stdio.h>
+
+namespace vcg {
+namespace tetra {
+namespace io {
+
+
+template <class SaveMeshType>
+class ExporterTET
+{
+public:
+    typedef ::vcg::ply::PropDescriptor PropDescriptor ;
+    typedef typename SaveMeshType::VertexPointer VertexPointer;
+    typedef typename SaveMeshType::ScalarType ScalarType;
+    typedef typename SaveMeshType::VertexType VertexType;
+    typedef typename SaveMeshType::TetraType TetraType;
+    typedef typename SaveMeshType::TetraPointer TetraPointer;
+    typedef typename SaveMeshType::VertexIterator VertexIterator;
+    typedef typename SaveMeshType::TetraIterator TetraIterator;
+
+    static bool Save(SaveMeshType &m,  const char * filename)	// V1.0
+    {
+        FILE *  eleFile;
+        FILE * nodeFile;
+
+        const int DGT   = vcg::tri::io::Precision<ScalarType>::digits();
+
+        std::string eleName(filename);
+        std::string nodeName(filename);
+
+        eleName.append(".ele");
+        nodeName.append(".node");
+
+        eleFile = fopen(eleName.c_str() , "wb");
+        if (eleFile == NULL)
+            return 1;
+        
+        nodeFile = fopen(nodeName.c_str() , "wb");
+        if (nodeFile == NULL)
+            return 1;
+        
+        fprintf(eleFile,
+                "#VCG lib .ele generated file\n"
+                "#This file contains the tetra definition in accord to Tetgen file format\n");
+        
+        fprintf(nodeFile,
+                "#VCG lib .node generated file\n"
+                "#This file contains the vertex definition in accord to Tetgen file format\n");
+       
+
+        fprintf(nodeFile, "%d 3 0 0\n", m.VN());
+        int vi = 0;
+        SimpleTempData<typename SaveMeshType::VertContainer, int> indices(m.vert);
+
+        ForEachVertex(m, [&] (VertexType & v) {
+            indices[&v] = vi;
+            fprintf(nodeFile, "%d %g %g %g\n", vi++, double(v.P().X()), double(v.P().Y()), double(v.P().Z()));
+        });
+
+        fprintf(eleFile, "%d 4 0\n", m.TN());
+        int ti = 0;
+        ForEachTetra(m, [&] (SaveMeshType::TetraType & t) {
+            fprintf(eleFile, "%d %d %d %d %d\n", ti++, indices[t.V(0)], indices[t.V(1)], indices[t.V(2)], indices[t.V(3)]);
+        });
+
+
+        fclose(eleFile);
+        fclose(nodeFile);
+
+        return 0;
+    }
+
+
+
+
+}; // end class
+
+
+
+} // end namespace tetra
+} // end namespace io
+} // end namespace vcg
+
+#endif