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       1                 :            : /*
       2                 :            :  * Copyright 2010 Savarese Software Research Corporation
       3                 :            :  *
       4                 :            :  * Licensed under the Apache License, Version 2.0 (the "License");
       5                 :            :  * you may not use this file except in compliance with the License.
       6                 :            :  * You may obtain a copy of the License at
       7                 :            :  *
       8                 :            :  *     http://www.savarese.com/software/ApacheLicense-2.0
       9                 :            :  *
      10                 :            :  * Unless required by applicable law or agreed to in writing, software
      11                 :            :  * distributed under the License is distributed on an "AS IS" BASIS,
      12                 :            :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      13                 :            :  * See the License for the specific language governing permissions and
      14                 :            :  * limitations under the License.
      15                 :            :  */
      16                 :            : #include <iostream>
      17                 :            : #include <ssrc/spatial/distance.h>
      18                 :            : 
      19                 :            : #include <array>
      20                 :            : 
      21                 :            : #define BOOST_TEST_MODULE DistanceTest
      22                 :            : #include <boost/test/unit_test.hpp>
      23                 :            : #include <boost/mpl/list.hpp>
      24                 :            : 
      25                 :            : using namespace ssrc::spatial;
      26                 :            : 
      27                 :            : typedef boost::mpl::list<unsigned int, int, double> coordinate_types;
      28                 :            : 
      29                 :          4 : BOOST_AUTO_TEST_CASE_TEMPLATE(test_d2_0, coordinate_type, coordinate_types) {
      30                 :            :   typedef NS_TR1::array<coordinate_type, 1> Point;
      31                 :            : 
      32 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1}}, Point{{1}}), 0);
                 [ -  + ]
      33 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1}}, Point{{2}}), 1);
                 [ -  + ]
      34 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{48}},
                 [ -  + ]
      35                 :            :                                                     Point{{52}}), 16);
      36 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{4}},
                 [ -  + ]
      37                 :            :                                                     Point{{1}}), 9);
      38                 :          3 : }
      39                 :            : 
      40                 :          4 : BOOST_AUTO_TEST_CASE_TEMPLATE(test_d2_1, coordinate_type, coordinate_types) {
      41                 :            :   typedef NS_TR1::array<coordinate_type, 2> Point;
      42                 :            : 
      43 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1}},
                 [ -  + ]
      44                 :            :                                                     Point{{1,1}}), 0);
      45 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1}},
                 [ -  + ]
      46                 :            :                                                     Point{{2,2}}), 2);
      47 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{83,9451}},
                 [ -  + ]
      48                 :            :                                                     Point{{4382,2383}}),
      49                 :            :                       68438025);
      50                 :          3 : }
      51                 :            : 
      52                 :          4 : BOOST_AUTO_TEST_CASE_TEMPLATE(test_d2_2, coordinate_type, coordinate_types) {
      53                 :            :   typedef NS_TR1::array<coordinate_type, 3> Point;
      54                 :            : 
      55 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1,1}},
                 [ -  + ]
      56                 :            :                                                     Point{{1,1,1}}), 0);
      57 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1,1}},
                 [ -  + ]
      58                 :            :                                                     Point{{2,2,2}}), 3);
      59 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{9,0,4}},
                 [ -  + ]
      60                 :            :                                                     Point{{100,32,0}}), 9321);
      61                 :          3 : }
      62                 :            : 
      63 [ -  + ][ #  # ]:          4 : BOOST_AUTO_TEST_CASE_TEMPLATE(test_d2_4, coordinate_type, coordinate_types) {
      64                 :            :   typedef NS_TR1::array<coordinate_type, 4> Point;
      65                 :            : 
      66 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1,1,1}},
                 [ -  + ]
      67                 :            :                                                     Point{{1,1,1,1}}), 0);
      68 [ -  + ][ -  + ]:          3 :   BOOST_REQUIRE_EQUAL(euclidean_distance<Point>::d2(Point{{1,1,1,1}},
                 [ -  + ]
      69                 :            :                                                     Point{{2,2,2,2}}), 4);
      70 [ +  - ][ +  - ]:          6 : }