mesh quicklook generator example and sort rows example, readWRL from preview3d

2013-10-06 14:38:25 +02:00
parent 085991b082
commit a7a16fcf69
16 changed files with 205 additions and 8 deletions
@@ -0,0 +1,76 @@
+#include <Eigen/Dense>
+#include <iostream>
+#include <algorithm>
+#include <igl/sort.h>
+#include <igl/unique.h>
+#include <igl/get_seconds.h>
+#include <igl/colon.h>
+#include <igl/slice.h>
+#include <igl/sortrows.h>
+#include <igl/readDMAT.h>
+#include <igl/writeDMAT.h>
+
+int main(int argc, char * argv[])
+{
+  using namespace Eigen;
+  using namespace std;
+  using namespace igl;
+  //MatrixXd X;
+  //if(!readDMAT("X.dmat",X))
+  //{
+  //  X = MatrixXd::Random(766443,2);
+  //  for(int x = 0;x<X.size();x++)
+  //  {
+  //    X(x) = floor(X(x)*680);
+  //  }
+  //}
+  MatrixXd X(4,2);
+  //X << 1,2,1,2,1,1,2,2;
+  X << 1,3,2,4,6,1,7,2;
+  cout<<X<<endl<<endl;
+  typedef MatrixXi::Scalar Scalar;
+  bool ascending = false;
+  const int dim = 2;
+  double t;
+
+//#define NUM_RUNS 100
+//  MatrixXd Y;
+//  MatrixXi IX;
+//  t = get_seconds();
+//  for(int r = 0;r<NUM_RUNS;r++)
+//  sort(X,dim,ascending,Y,IX);
+//  cout<<(get_seconds()-t)/(double)NUM_RUNS<<endl;
+//  //cout<<Y<<endl<<endl;
+//  //cout<<IX<<endl<<endl;
+//  MatrixXd Y2;
+//  MatrixXi IX2;
+//  t = get_seconds();
+//  for(int r = 0;r<NUM_RUNS;r++)
+//  sort2(X,dim,ascending,Y2,IX2);
+//  cout<<(get_seconds()-t)/(double)NUM_RUNS<<endl;
+//  //cout<<Y2<<endl<<endl;
+//  //cout<<IX2<<endl<<endl;
+
+#define NUM_RUNS 1
+  MatrixXd Y;
+  VectorXi IA,IC;
+
+  t = get_seconds();
+  for(int r = 0;r<NUM_RUNS;r++)
+  unique_rows(X,Y,IA,IC);
+  cout<<(get_seconds()-t)/(double)NUM_RUNS<<endl;
+
+  t = get_seconds();
+  for(int r = 0;r<NUM_RUNS;r++)
+  sortrows(X,true,Y,IC);
+  cout<<(get_seconds()-t)/(double)NUM_RUNS<<endl;
+  writeDMAT("X.dmat",X,true);
+  writeDMAT("Y.dmat",Y,true);
+  writeDMAT("IC.dmat",IC,true);
+
+  //cout<<Y<<endl<<endl;
+  //cout<<IA<<endl<<endl;
+  //cout<<IC<<endl<<endl;
+  cout<<Y.rows()<<endl;
+
+}