You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

34 lines
842 B

#include <test_common.h>
#include <igl/spectra/eigs.h>
#include <igl/cotmatrix.h>
#include <igl/massmatrix.h>
#include <igl/triangulated_grid.h>
#include <igl/matlab_format.h>
#include <iostream>
TEST_CASE("eigs: grid", "[igl/spectra]")
{
Eigen::MatrixXd V;
Eigen::MatrixXi F;
igl::triangulated_grid(10,10,V,F);
Eigen::SparseMatrix<double> L;
igl::cotmatrix(V,F,L);
Eigen::SparseMatrix<double> M;
igl::massmatrix(V,F,igl::MASSMATRIX_TYPE_DEFAULT,M);
Eigen::MatrixXd U;
Eigen::VectorXd S;
Eigen::VectorXd S_matlab(5,1);
S_matlab<<
-0.00000000000000600,
-9.76979543268284445,
-9.76979543268286221,
-19.53959086536570311,
-37.90080021472548566;
const bool success = igl::spectra::eigs(L,M,S_matlab.size(),igl::EIGS_TYPE_SM,U,S);
REQUIRE(success);
test_common::assert_near(S,S_matlab,1e-4);
}