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Move eigen to third party (#282)

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* remove useless statement

* Add eigen to third_party dir

* remove reducdant lines
This commit is contained in:
Jack Zhou
2022-09-26 19:24:02 +08:00
committed by GitHub
parent 36eb6fbba6
commit 355382ad63
1781 changed files with 420576 additions and 71 deletions
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22
third_party/eigen/doc/snippets/Tutorial_AdvancedInitialization_ThreeWays.cpp vendored Normal file
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@@ -0,0 +1,22 @@
const int size = 6;
MatrixXd mat1(size, size);
mat1.topLeftCorner(size / 2, size / 2) = MatrixXd::Zero(size / 2, size / 2);
mat1.topRightCorner(size / 2, size / 2) = MatrixXd::Identity(size / 2,
size / 2);
mat1.bottomLeftCorner(size / 2, size / 2) = MatrixXd::Identity(size / 2,
size / 2);
mat1.bottomRightCorner(size / 2, size / 2) = MatrixXd::Zero(size / 2, size / 2);
std::cout << mat1 << std::endl << std::endl;
MatrixXd mat2(size, size);
mat2.topLeftCorner(size / 2, size / 2).setZero();
mat2.topRightCorner(size / 2, size / 2).setIdentity();
mat2.bottomLeftCorner(size / 2, size / 2).setIdentity();
mat2.bottomRightCorner(size / 2, size / 2).setZero();
std::cout << mat2 << std::endl << std::endl;
MatrixXd mat3(size, size);
mat3 << MatrixXd::Zero(size / 2, size / 2),
MatrixXd::Identity(size / 2, size / 2),
MatrixXd::Identity(size / 2, size / 2), MatrixXd::Zero(size / 2, size / 2);
std::cout << mat3 << std::endl;