diff options
author | Gael Guennebaud <g.gael@free.fr> | 2009-02-17 09:53:05 +0000 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2009-02-17 09:53:05 +0000 |
commit | e6f1104b57f19dff773b4f22d26d6aacabd1bdb2 (patch) | |
tree | 5de1c7a6d6eb47d894f119b5bda0107bd531000d /test/geo_quaternion.cpp | |
parent | 67b4fab4e30a59d9a7e001ef25938d1767371569 (diff) |
* fix Quaternion::setFromTwoVectors (thanks to "benv" from the forum)
* extend PartialRedux::cross() to any matrix sizes with automatic
vectorization when possible
* unit tests: add "geo_" prefix to all unit tests related to the
geometry module and start splitting the big "geometry.cpp" tests to
multiple smaller ones (also include new tests)
Diffstat (limited to 'test/geo_quaternion.cpp')
-rw-r--r-- | test/geo_quaternion.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/test/geo_quaternion.cpp b/test/geo_quaternion.cpp new file mode 100644 index 000000000..c9337c025 --- /dev/null +++ b/test/geo_quaternion.cpp @@ -0,0 +1,116 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2008-2009 Gael Guennebaud <g.gael@free.fr> +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, you can redistribute it and/or +// modify it under the terms of the GNU General Public License as +// published by the Free Software Foundation; either version 2 of +// the License, or (at your option) any later version. +// +// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see <http://www.gnu.org/licenses/>. + +#include "main.h" +#include <Eigen/Geometry> +#include <Eigen/LU> +#include <Eigen/SVD> + +template<typename Scalar> void quaternion(void) +{ + /* this test covers the following files: + Quaternion.h + */ + + typedef Matrix<Scalar,3,3> Matrix3; + typedef Matrix<Scalar,3,1> Vector3; + typedef Quaternion<Scalar> Quaternionx; + typedef AngleAxis<Scalar> AngleAxisx; + + Scalar largeEps = test_precision<Scalar>(); + if (ei_is_same_type<Scalar,float>::ret) + largeEps = 1e-3f; + + Scalar eps = ei_random<Scalar>() * 1e-2; + + Vector3 v0 = Vector3::Random(), + v1 = Vector3::Random(), + v2 = Vector3::Random(), + v3 = Vector3::Random(); + + Scalar a = ei_random<Scalar>(-Scalar(M_PI), Scalar(M_PI)); + + // Quaternion: Identity(), setIdentity(); + Quaternionx q1, q2; + q2.setIdentity(); + VERIFY_IS_APPROX(Quaternionx(Quaternionx::Identity()).coeffs(), q2.coeffs()); + q1.coeffs().setRandom(); + VERIFY_IS_APPROX(q1.coeffs(), (q1*q2).coeffs()); + + q1 = AngleAxisx(a, v0.normalized()); + q2 = AngleAxisx(a, v1.normalized()); + + // angular distance + Scalar refangle = ei_abs(AngleAxisx(q1.inverse()*q2).angle()); + if (refangle>Scalar(M_PI)) + refangle = Scalar(2)*Scalar(M_PI) - refangle; + + if((q1.coeffs()-q2.coeffs()).norm() > 10*largeEps) + { + VERIFY(ei_isApprox(q1.angularDistance(q2), refangle, largeEps)); + } + + // rotation matrix conversion + VERIFY_IS_APPROX(q1 * v2, q1.toRotationMatrix() * v2); + VERIFY_IS_APPROX(q1 * q2 * v2, + q1.toRotationMatrix() * q2.toRotationMatrix() * v2); + + VERIFY( (q2*q1).isApprox(q1*q2, largeEps) + || !(q2 * q1 * v2).isApprox(q1.toRotationMatrix() * q2.toRotationMatrix() * v2)); + + q2 = q1.toRotationMatrix(); + VERIFY_IS_APPROX(q1*v1,q2*v1); + + + // angle-axis conversion + AngleAxisx aa = q1; + VERIFY_IS_APPROX(q1 * v1, Quaternionx(aa) * v1); + VERIFY_IS_NOT_APPROX(q1 * v1, Quaternionx(AngleAxisx(aa.angle()*2,aa.axis())) * v1); + + // from two vector creation + VERIFY_IS_APPROX( v2.normalized(),(q2.setFromTwoVectors(v1, v2)*v1).normalized()); + VERIFY_IS_APPROX( v1.normalized(),(q2.setFromTwoVectors(v1, v1)*v1).normalized()); + VERIFY_IS_APPROX(-v1.normalized(),(q2.setFromTwoVectors(v1,-v1)*v1).normalized()); + v3 = v1.cwise()+eps; + VERIFY_IS_APPROX( v3.normalized(),(q2.setFromTwoVectors(v1, v3)*v1).normalized()); + VERIFY_IS_APPROX(-v3.normalized(),(q2.setFromTwoVectors(v1,-v3)*v1).normalized()); + + // inverse and conjugate + VERIFY_IS_APPROX(q1 * (q1.inverse() * v1), v1); + VERIFY_IS_APPROX(q1 * (q1.conjugate() * v1), v1); + + // test casting + Quaternion<float> q1f = q1.template cast<float>(); + VERIFY_IS_APPROX(q1f.template cast<Scalar>(),q1); + Quaternion<double> q1d = q1.template cast<double>(); + VERIFY_IS_APPROX(q1d.template cast<Scalar>(),q1); +} + +void test_geo_quaternion() +{ + for(int i = 0; i < g_repeat; i++) { +// CALL_SUBTEST( quaternion<float>() ); + CALL_SUBTEST( quaternion<double>() ); + } +} |