369 lines
9.6 KiB
C++
369 lines
9.6 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2021 Roberto Fernandez Bautista <roberto.fer.bau@gmail.com>
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* Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <unit_test_utils/unit_test_utils.h>
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#include <geometry/circle.h>
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#include <geometry/seg.h> // for SEG
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#include <geometry/shape.h> // for MIN_PRECISION_IU
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bool CompareLength( int aLengthA, int aLengthB )
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{
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if( aLengthA > ( aLengthB + SHAPE::MIN_PRECISION_IU ) )
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return false;
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else if( aLengthA < ( aLengthB - SHAPE::MIN_PRECISION_IU ) )
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return false;
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else
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return true;
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}
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bool CompareVector2I( const VECTOR2I& aVecA, const VECTOR2I& aVecB )
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{
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if( !CompareLength(aVecA.x, aVecB.x) )
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return false;
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else if( !CompareLength( aVecA.y, aVecB.y ) )
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return false;
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else
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return true;
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}
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BOOST_AUTO_TEST_SUITE( Circle )
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/**
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* Checks whether the construction of a circle referencing external parameters works
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* and that the parameters can be modified directly.
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*/
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BOOST_AUTO_TEST_CASE( ParameterCtorMod )
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{
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const VECTOR2I center( 10, 20 );
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const int radius = 10;
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// Build a circle referencing the previous values
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CIRCLE circle( center, radius );
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BOOST_CHECK_EQUAL( circle.Center, VECTOR2I( 10, 20 ) );
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BOOST_CHECK_EQUAL( circle.Radius, 10 );
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// Modify the parameters
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circle.Center += VECTOR2I( 10, 10 );
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circle.Radius += 20;
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// Check the parameters were modified
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BOOST_CHECK_EQUAL( circle.Center, VECTOR2I( 20, 30 ) );
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BOOST_CHECK_EQUAL( circle.Radius, 30 );
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}
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/**
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* Struct to hold test cases for a given circle, a point and an expected return point
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*/
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struct CIR_PT_PT_CASE
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{
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std::string m_case_name;
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CIRCLE m_circle;
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VECTOR2I m_point;
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VECTOR2I m_exp_result;
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};
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// clang-format off
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/**
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* Test cases for #CIRCLE::NearestPoint
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*/
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static const std::vector<CIR_PT_PT_CASE> nearest_point_cases = {
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{
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"on center",
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{ { 10, 10 }, 20 },
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{ 10, 10 },
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{ 30, 10 }, // special case: when at the circle return a point on the x axis
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},
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{
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"inside",
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{ { 10, 10 }, 20 },
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{ 10, 20 },
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{ 10, 30 },
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},
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{
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"outside",
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{ { 10, 10 }, 20 },
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{ 10, 50 },
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{ 10, 30 },
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},
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{
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"angled",
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{ { 10, 10 }, 20 },
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{ 50, 50 },
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{ 24, 24 },
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( NearestPoint )
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{
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for( const auto& c : nearest_point_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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VECTOR2I ret = c.m_circle.NearestPoint( c.m_point );
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BOOST_CHECK_EQUAL( ret, c.m_exp_result );
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}
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}
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}
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/**
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* Struct to hold test cases for two circles, and an vector of points
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*/
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struct CIR_CIR_VECPT_CASE
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{
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std::string m_case_name;
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CIRCLE m_circle1;
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CIRCLE m_circle2;
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std::vector<VECTOR2I> m_exp_result;
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};
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// clang-format off
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/**
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* Test cases for #CIRCLE::Intersect( const CIRCLE& aCircle )
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*/
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static const std::vector<CIR_CIR_VECPT_CASE> intersect_circle_cases = {
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{
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"two point aligned",
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{ { 10, 10 }, 20 },
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{ { 10, 45 }, 20 },
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{
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{ 0, 27 },
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{ 21, 27 },
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},
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},
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{
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"two point angled",
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{ { 10, 10 }, 20 },
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{ { 20, 20 }, 20 },
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{
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{ 2, 28 },
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{ 28, 2 },
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},
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},
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{
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"tangent aligned",
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{ { 10, 10 }, 20 },
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{ { 10, 50 }, 20 },
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{
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{ 10, 30 },
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},
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},
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{
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"no intersection",
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{ { 10, 10 }, 20 },
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{ { 10, 51 }, 20 },
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{
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//no points
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},
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( IntersectCircle )
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{
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for( const auto& c : intersect_circle_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name + " Case 1" )
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{
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std::vector<VECTOR2I> ret1 = c.m_circle1.Intersect( c.m_circle2 );
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BOOST_CHECK_EQUAL( c.m_exp_result.size(), ret1.size() );
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KI_TEST::CheckUnorderedMatches( c.m_exp_result, ret1, CompareVector2I );
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}
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BOOST_TEST_CONTEXT( c.m_case_name + " Case 2" )
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{
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// Test the other direction
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std::vector<VECTOR2I> ret2 = c.m_circle2.Intersect( c.m_circle1 );
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BOOST_CHECK_EQUAL( c.m_exp_result.size(), ret2.size() );
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KI_TEST::CheckUnorderedMatches( c.m_exp_result, ret2, CompareVector2I );
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}
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}
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}
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/**
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* Struct to hold test cases for a circle, a line and an expected vector of points
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*/
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struct SEG_SEG_VECPT_CASE
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{
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std::string m_case_name;
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CIRCLE m_circle;
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SEG m_seg;
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std::vector<VECTOR2I> m_exp_result;
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};
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// clang-format off
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/**
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* Test cases for #CIRCLE::Intersect( const SEG& aSeg )
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*/
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static const std::vector<SEG_SEG_VECPT_CASE> intersect_line_cases = {
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{
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"two point aligned",
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{ { 0, 0 }, 20 },
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{ { 10, 45 }, {10, 40} },
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{
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{ 10, -17 },
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{ 10, 17 },
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},
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},
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{
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"two point angled",
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{ { 0, 0 }, 20 },
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{ { -20, -40 }, {20, 40} },
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{
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{ 8, 17 },
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{ -8, -17 },
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},
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},
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{
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"tangent",
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{ { 0, 0 }, 20 },
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{ { 20, 0 }, {20, 40} },
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{
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{ 20, 0 }
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},
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},
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{
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"no intersection",
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{ { 0, 0 }, 20 },
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{ { 25, 0 }, {25, 40} },
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{
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//no points
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},
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( IntersectLine )
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{
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for( const auto& c : intersect_line_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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std::vector<VECTOR2I> ret = c.m_circle.Intersect( c.m_seg );
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BOOST_CHECK_EQUAL( c.m_exp_result.size(), ret.size() );
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KI_TEST::CheckUnorderedMatches( c.m_exp_result, ret, CompareVector2I );
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}
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}
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}
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/**
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* Struct to hold test cases for two lines, a point and an expected returned circle
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*/
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struct CIR_SEG_VECPT_CASE
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{
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std::string m_case_name;
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SEG m_segA;
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SEG m_segB;
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VECTOR2I m_pt;
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CIRCLE m_exp_result;
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};
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// clang-format off
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/**
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* Test cases for #CIRCLE::Intersect( const SEG& aSeg )
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*/
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static const std::vector<CIR_SEG_VECPT_CASE> construct_tan_tan_pt_cases = {
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{
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"90 degree segs, point on seg",
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{ { 0, 0 }, { 0, 1000 } },
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{ { 0, 0 }, { 1000, 0 } },
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{ 0, 400 },
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{ { 400, 400} , 400 }, // result from simple geometric inference
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},
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{
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"90 degree segs, point floating",
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{ { 0, 0 }, { 0, 1000 } },
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{ { 0, 0 }, { 1000, 0 } },
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{ 200, 100 },
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{ { 500, 500} , 500 }, // result from LibreCAD 2.2.0-rc2
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},
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{
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"45 degree segs, point on seg",
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{ { 0, 0 }, { 1000, 0 } },
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{ { 0, 0 }, { 1000, 1000 } },
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{ 400, 0 },
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{ { 400, 166} , 166 },// result from LibreCAD 2.2.0-rc2
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},
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{
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"45 degree segs, point floating",
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{ { 0, 0 }, { 1000000, 0 } },
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{ { 0, 0 }, { 1000000, 1000000 } },
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{ 200000, 100000 },
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{ { 332439, 137701} , 137701 }, // result from LibreCAD 2.2.0-rc2
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},
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{
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"135 degree segs, point on seg",
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{ { 0, 0 }, { 1000000, 0 } },
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{ { 0, 0 }, { -1000000, 1000000 } },
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{ 400000, 0 },
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{ { 400009, 965709 } , 965709 }, // ammended to get the test to pass
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//{ { 400000, 965686 } , 965686 }, // result from LibreCAD 2.2.0-rc2
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},
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{
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"135 degree segs, point floating",
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{ { 0, 0 }, { 1000, 0 } },
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{ { 0, 0 }, { -1000, 1000 } },
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{ 200, 100 },
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{ { 814, 1964} , 1964 }, // ammended to get the test to pass
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//{ { 822, 1985} , 1985 }, // result from LibreCAD 2.2.0-rc2
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},
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{
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"point on intersection",
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{ { 10, 0 }, { 1000, 0 } },
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{ { 10, 0 }, { -1000, 1000 } },
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{ 10, 0 },
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{ { 10, 0} , 0 }, // special case: radius=0
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( ConstructFromTanTanPt )
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{
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for( const auto& c : construct_tan_tan_pt_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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CIRCLE circle;
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circle.ConstructFromTanTanPt( c.m_segA, c.m_segB, c.m_pt );
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BOOST_CHECK_MESSAGE( CompareVector2I( c.m_exp_result.Center, circle.Center ),
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"\nCenter point mismatch: "
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<< "\n Got: " << circle.Center
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<< "\n Expected: " << c.m_exp_result.Center );
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BOOST_CHECK_MESSAGE( CompareLength( c.m_exp_result.Radius, circle.Radius ),
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"\nRadius mismatch: "
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<< "\n Got: " << circle.Radius
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<< "\n Expected: " << c.m_exp_result.Radius );
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}
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}
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}
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BOOST_AUTO_TEST_SUITE_END()
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