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Add an axis aligned box in the geometry module.

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Some naming questions:
- for "extend" we could also think of: "expand", "union", "add"
- same for "clamp": "crop", "intersect"
- same for "contains": "isInside", "intersect"
=> ah "intersect" is conflicting, so that eliminates this one !
This commit is contained in:
Gael Guennebaud
2008-10-26 15:04:31 +00:00
parent ec0a423862
commit 94f6f2a7de
7 changed files with 260 additions and 4 deletions
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75
test/alignedbox.cpp Normal file
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// 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 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/QR>
template<typename BoxType> void alignedbox(const BoxType& _box)
{
/* this test covers the following files:
AlignedBox.h
*/
const int dim = _box.dim();
typedef typename BoxType::Scalar Scalar;
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef Matrix<Scalar, BoxType::AmbientDimAtCompileTime, 1> VectorType;
VectorType p0 = VectorType::Random(dim);
VectorType p1 = VectorType::Random(dim);
RealScalar s1 = ei_random<RealScalar>(0,1);
BoxType b0(dim);
BoxType b1(VectorType::Random(dim),VectorType::Random(dim));
BoxType b2;
b0.extend(p0);
b0.extend(p1);
VERIFY(b0.contains(p0*s1+(1.-s1)*p1));
VERIFY(!b0.contains(p0 + (1+s1)*(p1-p0)));
(b2 = b0).extend(b1);
VERIFY(b2.contains(b0));
VERIFY(b2.contains(b1));
VERIFY_IS_APPROX(b2.clamp(b0), b0);
// casting
const int Dim = BoxType::AmbientDimAtCompileTime;
typedef typename GetDifferentType<Scalar>::type OtherScalar;
AlignedBox<OtherScalar,Dim> hp1f = b0.template cast<OtherScalar>();
VERIFY_IS_APPROX(hp1f.template cast<Scalar>(),b0);
AlignedBox<Scalar,Dim> hp1d = b0.template cast<Scalar>();
VERIFY_IS_APPROX(hp1d.template cast<Scalar>(),b0);
}
void test_alignedbox()
{
for(int i = 0; i < g_repeat; i++) {
CALL_SUBTEST( alignedbox(AlignedBox<float,2>()) );
CALL_SUBTEST( alignedbox(AlignedBox<float,3>()) );
CALL_SUBTEST( alignedbox(AlignedBox<double,4>()) );
}
}