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#include <test_common.h>
#include <igl/moments.h>
TEST_CASE("moments: tet", "[igl]" )
{
const Eigen::MatrixXd V =
(Eigen::MatrixXd(4,3)<<0,0,0, 1,0,0, 0,1,0, 0,0,1).finished();
const Eigen::MatrixXi F =
(Eigen::MatrixXi(4,3)<< 0,2,1, 0,3,2, 2,3,1, 0,1,3).finished();
double m0;
Eigen::Vector3d m1;
Eigen::Matrix3d m2;
igl::moments(V,F,m0,m1,m2);
const double epsilon = 1e-15;
double gt_m0 = 1.0/6.0;
Eigen::Vector3d gt_m1(1./24.,1./24.,1./24.);
Eigen::Matrix3d gt_m2;
gt_m2 <<
1./80.,1./480.,1./480.,
1./480.,1./80.,1./480.,
1./480.,1./480.,1./80.;
REQUIRE(m0 < gt_m0+epsilon);
REQUIRE(m0+epsilon > gt_m0);
test_common::assert_near(m1,gt_m1,epsilon);
test_common::assert_near(m2,gt_m2,epsilon);
}