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34 lines
988 B
34 lines
988 B
#include <test_common.h>
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#include <igl/doublearea.h>
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TEST_CASE("doublearea: VF_vs_ABC", "[igl]" "[slow]")
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{
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auto test_case = [](const std::string ¶m)
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{
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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igl::read_triangle_mesh(test_common::data_path(param), V, F);
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// Check that computing double area with (V,F) is the same as computing
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// double area with (V1,V2,V2)
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Eigen::VectorXd A1,A2;
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igl::doublearea(V,F,A1);
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Eigen::MatrixXd A(F.rows(),3);
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Eigen::MatrixXd B(F.rows(),3);
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Eigen::MatrixXd C(F.rows(),3);
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for(int f = 0;f<F.rows();f++)
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{
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A.row(f) = V.row(F(f,0));
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B.row(f) = V.row(F(f,1));
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C.row(f) = V.row(F(f,2));
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}
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igl::doublearea(A,B,C,A2);
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REQUIRE (A2.size() == A1.size());
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for(int a = 0;a<A1.size();a++)
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{
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REQUIRE (A2(a) == Approx (A1(a)).margin(1e-15));
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}
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};
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test_common::run_test_cases(test_common::all_meshes(), test_case);
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}
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