test_oval.cpp

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/*
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 *
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 *
 * This program is free software; 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.
 *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
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 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
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 */
 
#include <boost/test/unit_test.hpp>
 
#include <geometry/oval.h>
 
#include "geom_test_utils.h"
 
template <typename T>
void CHECK_COLLECTIONS_SAME_UNORDERED(const T& expected, const T& actual) {
 
 for( const auto& p : expected )
 {
 BOOST_CHECK_MESSAGE( std::find( actual.begin(), actual.end(), p ) != actual.end(),
 "Expected item not found: " << p );
 }
 
 for( const auto& p : actual )
 {
 BOOST_CHECK_MESSAGE( std::find( expected.begin(), expected.end(), p ) != expected.end(),
 "Unexpected item: " << p );
 }
 
 BOOST_CHECK_EQUAL( expected.size(), actual.size() );
}
 
struct OvalFixture
{
};
 
BOOST_FIXTURE_TEST_SUITE( Oval, OvalFixture )
 
struct OVAL_POINTS_TEST_CASE
{
 VECTOR2I m_size;
 EDA_ANGLE m_rotation;
 std::vector<VECTOR2I> m_expected_points;
};
 
void DoOvalPointTestChecks( const OVAL_POINTS_TEST_CASE& testcase )
{
 const auto sort_vectors_x_then_y = []( const VECTOR2I& a, const VECTOR2I& b ) {
 return LexicographicalCompare<VECTOR2I::coord_type>( a, b ) > 0;
 };
 
 std::vector<VECTOR2I> expected_points = testcase.m_expected_points;
 std::vector<VECTOR2I> actual_points =
 GetOvalKeyPoints( testcase.m_size, testcase.m_rotation, OVAL_ALL_KEY_POINTS );
 
 CHECK_COLLECTIONS_SAME_UNORDERED( expected_points, actual_points );
}
 
BOOST_AUTO_TEST_CASE( SimpleOvalVertical )
{
 const OVAL_POINTS_TEST_CASE testcase
 {
 { 1000, 3000 },
 { 0, DEGREES_T },
 {
 { 0, 0 },
 // Main points
 { 0, 1500 },
 { 0, -1500 },
 { 500, 0 },
 { -500, 0 },
 // Cap centres
 { 0, 1000 },
 { 0, -1000 },
 // Side segment ends
 { 500, 1000 },
 { 500, -1000 },
 { -500, 1000 },
 { -500, -1000 },
 },
 };
 
 DoOvalPointTestChecks( testcase );
}
 
BOOST_AUTO_TEST_CASE( SimpleOvalHorizontal )
{
 const OVAL_POINTS_TEST_CASE testcase
 {
 { 3000, 1000 },
 { 0, DEGREES_T },
 {
 { 0, 0 },
 // Main points
 { 0, 500 },
 { 0, -500 },
 { 1500, 0 },
 { -1500, 0 },
 // Cap centres
 { 1000, 0 },
 { -1000, 0 },
 // Side segment ends
 { 1000, 500 },
 { 1000, -500 },
 { -1000, 500 },
 { -1000, -500 },
 },
 };
 
 DoOvalPointTestChecks( testcase );
}
 
BOOST_AUTO_TEST_CASE( SimpleOval45Degrees )
{
 // In this case, it's useful to keep in mind the hypotenuse of
 // isoceles right-angled triangles is sqrt(2) times the length of the sides
 // 500 / sqrt(2) = 354
 // 1000 / sqrt(2) = 707
 // 1500 / sqrt(2) = 1061
 // 2000 / sqrt(2) = 1414
 
 const OVAL_POINTS_TEST_CASE testcase
 {
 { 4000, 1000 },
 { 45, DEGREES_T },
 {
 { 0, 0 },
 // Main points
 { 1414, -1414 },
 { -1414, 1414 },
 { 354, 354 },
 { -354, -354 },
 // Side segment ends
 { -1414, 707 },
 { 1414, -707 },
 { -707, 1414 },
 { 707, -1414 },
 // Cap centres
 { 1061, -1061 },
 { -1061, 1061 },
 // Extremum points (always one of NSEW of a cap centre because 45 degrees)
 { -1061 - 500, 1061 },
 { -1061, 1061 + 500 },
 { 1061 + 500, -1061 },
 { 1061, -1061 - 500 },
 },
 };
 
 DoOvalPointTestChecks( testcase );
}
 
BOOST_AUTO_TEST_SUITE_END()