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61 lines
1.9 KiB
61 lines
1.9 KiB
14 years ago
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>
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This file is part of Magnum.
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Magnum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 3
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only, as published by the Free Software Foundation.
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Magnum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License version 3 for more details.
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*/
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#include "GramSchmidtTest.h"
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#include "Math/Algorithms/GramSchmidt.h"
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CORRADE_TEST_MAIN(Magnum::Math::Algorithms::Test::GramSchmidtTest)
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namespace Magnum { namespace Math { namespace Algorithms { namespace Test {
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typedef Matrix<3, float> Matrix3;
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typedef Vector<3, float> Vector3;
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GramSchmidtTest::GramSchmidtTest() {
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addTests(&GramSchmidtTest::test);
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}
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void GramSchmidtTest::test() {
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Matrix3 m(
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3.0f, 5.0f, 8.0f,
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4.0f, 4.0f, 7.0f,
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7.0f, -1.0f, 8.0f
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);
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Matrix3 normalized = Algorithms::gramSchmidt(m);
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/* Verify the first vector is in direction of first original */
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CORRADE_COMPARE(normalized[0], m[0].normalized());
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/* Verify the vectors have unit length */
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CORRADE_COMPARE(normalized[0].length(), 1.0f);
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CORRADE_COMPARE(normalized[1].length(), 1.0f);
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CORRADE_COMPARE(normalized[2].length(), 1.0f);
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/* Verify the vectors are orthogonal */
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CORRADE_COMPARE(Vector3::dot(normalized[0], normalized[1]), 0.0f);
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CORRADE_COMPARE(Vector3::dot(normalized[0], normalized[2]), 0.0f);
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CORRADE_COMPARE(Vector3::dot(normalized[1], normalized[2]), 0.0f);
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/* Just to be sure */
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Matrix3 expected( 0.303046f, 0.505076f, 0.808122f,
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0.928316f, -0.348119f, -0.130544f,
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-0.215388f, -0.789754f, 0.574367f);
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CORRADE_COMPARE(normalized, expected);
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}
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}}}}
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