OpenCV/opencv/modules/core/test/test_rotatedrect.cpp

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#include "test_precomp.hpp"

namespace opencv_test { namespace {

class Core_RotatedRectConstructorTest : public cvtest::BaseTest
{
public:
    Core_RotatedRectConstructorTest();
protected:
    int prepare_test_case( int );
    void run_func();
    int validate_test_results( int );
    float MAX_COORD_VAL;
    Point2f a, b, c;
    RotatedRect rec;
};

Core_RotatedRectConstructorTest::Core_RotatedRectConstructorTest()
{
    test_case_count = 100;
    MAX_COORD_VAL = 1000.0f;
}

int Core_RotatedRectConstructorTest::prepare_test_case( int test_case_idx )
{
    cvtest::BaseTest::prepare_test_case( test_case_idx );
    RNG& rng = ts->get_rng();
    a = Point2f( rng.uniform(-MAX_COORD_VAL, MAX_COORD_VAL), rng.uniform(-MAX_COORD_VAL, MAX_COORD_VAL) );
    do
    {
        b = Point2f( rng.uniform(-MAX_COORD_VAL, MAX_COORD_VAL), rng.uniform(-MAX_COORD_VAL, MAX_COORD_VAL) );
    }
    while( cv::norm(a - b) <= FLT_EPSILON );
    Vec2f along(a - b);
    Vec2f perp = Vec2f(-along[1], along[0]);
    double d = (double) rng.uniform(1.0f, 5.0f);
    if( cvtest::randInt(rng) % 2 == 0 ) d = -d;
    c = Point2f( (float) ((double) b.x + d * perp[0]), (float) ((double) b.y + d * perp[1]) );
    return 1;
}

void Core_RotatedRectConstructorTest::run_func()
{
    rec = RotatedRect(a, b, c);
}

int Core_RotatedRectConstructorTest::validate_test_results( int )
{
    Point2f vertices[4];
    rec.points(vertices);
    int count_match = 0;
    for( int i = 0; i < 4; i++ )
    {
        if( cv::norm(vertices[i] - a) <= 0.001 ) count_match++;
        else if( cv::norm(vertices[i] - b) <= 0.001 ) count_match++;
        else if( cv::norm(vertices[i] - c) <= 0.001 ) count_match++;
    }
    if( count_match == 3 )
        return cvtest::TS::OK;
    ts->printf( cvtest::TS::LOG, "RotatedRect end points don't match those supplied in constructor");
    ts->set_failed_test_info( cvtest::TS::FAIL_INVALID_OUTPUT );
    return cvtest::TS::OK;
}

TEST(Core_RotatedRect, three_point_constructor) { Core_RotatedRectConstructorTest test; test.safe_run(); }

}} // namespace