From e04875d33d3eb70bd47888c2cc1ff546682a27de Mon Sep 17 00:00:00 2001
From: cignoni <paolo.cignoni@isti.cnr.it>
Date: Wed, 11 Sep 2013 11:08:23 +0000
Subject: [PATCH] Added sample for point cloud subsampling

---
 .../trimesh_pointcloud_sampling.cpp           | 89 +++++++++++++++++++
 .../trimesh_pointcloud_sampling.pro           |  3 +
 2 files changed, 92 insertions(+)
 create mode 100644 apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.cpp
 create mode 100644 apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.pro

diff --git a/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.cpp b/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.cpp
new file mode 100644
index 00000000..49c96068
--- /dev/null
+++ b/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.cpp
@@ -0,0 +1,89 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2012                                           \/)\/    *
+* 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.                                                         *
+*                                                                           *
+****************************************************************************/
+#include<vcg/complex/complex.h>
+
+#include<wrap/io_trimesh/import.h>
+#include<wrap/io_trimesh/export.h>
+
+#include<vcg/complex/algorithms/point_sampling.h>
+#include<vcg/complex/algorithms/create/platonic.h>
+#include<vcg/complex/algorithms/clustering.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::Normal3f, 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<3)
+  {
+    printf("Usage trimesh_base <meshfilename> radius (as perc) (\n");
+    return -1;
+  }
+
+  MyMesh m;
+  MyMesh subM;
+  MyMesh cluM;
+  MyMesh rndM;
+
+  tri::MeshSampler<MyMesh> mps(subM);
+
+  if(tri::io::Importer<MyMesh>::Open(m,argv[1])!=0)
+  {
+    printf("Error reading file  %s\n",argv[1]);
+    exit(0);
+  }
+  tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::SamplingRandomGenerator().initialize(time(0));
+  float perc = atof(argv[2]);
+
+  float radius = m.bbox.Diag() * perc;
+  printf("Subsampling a PointCloud of %i vert with %f radius\n",m.VN(),radius);
+  tri::SurfaceSampling<MyMesh,tri::MeshSampler<MyMesh> >::PoissonDiskParam pp;
+  tri::SurfaceSampling<MyMesh,tri::MeshSampler<MyMesh> >::PoissonDiskParam::Stat pds; pp.pds=&pds;
+  pp.bestSampleChoiceFlag=false;
+  tri::SurfaceSampling<MyMesh,tri::MeshSampler<MyMesh> >::PoissonDiskPruning(mps, m, radius, pp);
+  tri::io::ExporterPLY<MyMesh>::Save(subM,"PoissonMesh.ply");
+  printf("Sampled %i vertices in %5.2f\n",subM.VN(), float(pds.pruneTime+pds.gridTime)/float(CLOCKS_PER_SEC));
+
+  int t0=clock();
+  tri::Clustering<MyMesh, vcg::tri::AverageColorCell<MyMesh> > ClusteringGrid;
+  ClusteringGrid.Init(m.bbox,100000,radius);
+  ClusteringGrid.AddPointSet(m);
+  ClusteringGrid.ExtractMesh(cluM);
+  int t1=clock();
+  tri::io::ExporterPLY<MyMesh>::Save(cluM,"ClusterMesh.ply");
+  printf("Sampled %i vertices in %5.2f\n",cluM.VN(), float(t1-t0)/float(CLOCKS_PER_SEC));
+
+  return 0;
+}
diff --git a/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.pro b/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.pro
new file mode 100644
index 00000000..25fbc5fe
--- /dev/null
+++ b/apps/sample/trimesh_pointcloud_sampling/trimesh_pointcloud_sampling.pro
@@ -0,0 +1,3 @@
+include(../common.pri)
+TARGET = trimesh_pointcloud_sampling
+SOURCES += trimesh_pointcloud_sampling.cpp ../../../wrap/ply/plylib.cpp