428 lines
10 KiB
C++
428 lines
10 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) 2017 CERN
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* @author Alejandro García Montoro <alejandro.garciamontoro@gmail.com>
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* Copyright (C) 2019 KiCad Developers, see CHANGELOG.TXT for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <unit_test_utils/unit_test_utils.h>
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#include <geometry/seg.h>
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/**
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* Predicate to check expected collision between two segments
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* @param aSegA the first #SEG
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* @param aSegB the second #SEG
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* @param aClearance the collision clearance
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* @param aExp expected collision
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* @return does the distance calculated agree?
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*/
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bool SegCollideCorrect( const SEG& aSegA, const SEG& aSegB, int aClearance, bool aExp )
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{
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const bool AtoB = aSegA.Collide( aSegB, aClearance );
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const bool BtoA = aSegB.Collide( aSegA, aClearance );
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const bool ok = ( AtoB == aExp ) && ( BtoA == aExp );
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if( AtoB != BtoA )
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{
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std::stringstream ss;
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ss << "Segment collision is not the same in both directions: expected " << aExp << ", got "
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<< AtoB << " & " << BtoA;
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BOOST_TEST_INFO( ss.str() );
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}
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else if( !ok )
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{
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std::stringstream ss;
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ss << "Collision incorrect: expected " << aExp << ", got " << AtoB;
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BOOST_TEST_INFO( ss.str() );
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}
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return ok;
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}
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/**
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* Predicate to check expected distance between two segments
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* @param aSegA the first #SEG
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* @param aSegB the second #SEG
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* @param aExp expected distance
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* @return does the distance calculated agree?
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*/
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bool SegDistanceCorrect( const SEG& aSegA, const SEG& aSegB, int aExp )
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{
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const int AtoB = aSegA.Distance( aSegB );
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const int BtoA = aSegB.Distance( aSegA );
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bool ok = ( AtoB == aExp ) && ( BtoA == aExp );
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if( AtoB != BtoA )
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{
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std::stringstream ss;
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ss << "Segment distance is not the same in both directions: expected " << aExp << ", got "
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<< AtoB << " & " << BtoA;
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BOOST_TEST_INFO( ss.str() );
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}
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else if( !ok )
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{
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std::stringstream ss;
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ss << "Distance incorrect: expected " << aExp << ", got " << AtoB;
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BOOST_TEST_INFO( ss.str() );
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}
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// Sanity check: the collision should be consistent with the distance
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ok = ok && SegCollideCorrect( aSegA, aSegB, 0, aExp == 0 );
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return ok;
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}
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/**
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* Predicate to check expected distance between a segment and a point
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* @param aSegA the segment
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* @param aVec the vector (point)
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* @param aExp expected distance
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* @return does the distance calculated agree?
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*/
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bool SegVecDistanceCorrect( const SEG& aSeg, const VECTOR2I& aVec, int aExp )
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{
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const int dist = aSeg.Distance( aVec );
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bool ok = ( dist == aExp );
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if( !ok )
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{
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std::stringstream ss;
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ss << "Distance incorrect: expected " << aExp << ", got " << dist;
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BOOST_TEST_INFO( ss.str() );
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}
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return ok;
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}
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/**
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* Predicate to check expected collision between two segments
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* @param aSegA the first #SEG
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* @param sSegB the second #SEG
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* @param aExp expected collinearity
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* @return does the collinearity calculated agree?
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*/
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bool SegCollinearCorrect( const SEG& aSegA, const SEG& aSegB, bool aExp )
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{
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const bool AtoB = aSegA.Collinear( aSegB );
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const bool BtoA = aSegB.Collinear( aSegA );
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const bool ok = ( AtoB == aExp ) && ( BtoA == aExp );
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if( AtoB != BtoA )
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{
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std::stringstream ss;
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ss << "Segment collinearity is not the same in both directions: expected " << aExp
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<< ", got " << AtoB << " & " << BtoA;
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BOOST_TEST_INFO( ss.str() );
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}
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else if( !ok )
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{
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std::stringstream ss;
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ss << "Collinearity incorrect: expected " << aExp << ", got " << AtoB;
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BOOST_TEST_INFO( ss.str() );
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}
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return ok;
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}
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BOOST_AUTO_TEST_SUITE( Segment )
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/**
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* Checks whether the construction of a segment referencing external points works
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* and that the endpoints can be modified as normal points.
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*/
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BOOST_AUTO_TEST_CASE( EndpointCtorMod )
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{
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const VECTOR2I pointA{ 10, 20 };
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const VECTOR2I pointB{ 100, 200 };
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// Build a segment referencing the previous points
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SEG segment( pointA, pointB );
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BOOST_CHECK_EQUAL( pointA, VECTOR2I( 10, 20 ) );
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BOOST_CHECK_EQUAL( pointB, VECTOR2I( 100, 200 ) );
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// Modify the ends of the segments
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segment.A += VECTOR2I( 10, 10 );
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segment.B += VECTOR2I( 100, 100 );
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// Check that the ends in segment are modified
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BOOST_CHECK_EQUAL( segment.A, VECTOR2I( 20, 30 ) );
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BOOST_CHECK_EQUAL( segment.B, VECTOR2I( 200, 300 ) );
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}
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struct SEG_SEG_DISTANCE_CASE
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{
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std::string m_case_name;
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SEG m_seg_a;
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SEG m_seg_b;
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int m_exp_dist;
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};
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// clang-format off
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static const std::vector<SEG_SEG_DISTANCE_CASE> seg_seg_dist_cases = {
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{
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"Parallel, 10 apart",
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{ { 0, 0 }, { 10, 0 } },
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{ { 0, 10 }, { 10, 10 } },
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10,
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},
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{
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"Non-parallel, 10 apart",
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{ { 0, -5 }, { 10, 0 } },
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{ { 0, 10 }, { 10, 10 } },
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10,
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},
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{
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"Co-incident",
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{ { 0, 0 }, { 30, 0 } },
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{ { 10, 0 }, { 20, 0 } },
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0,
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},
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{
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"Crossing",
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{ { 0, -10 }, { 0, 10 } },
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{ { -20, 0 }, { 20, 0 } },
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0,
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},
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{
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"T-junction",
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{ { 0, -10 }, { 0, 10 } },
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{ { -20, 0 }, { 0, 0 } },
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0,
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},
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{
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"T-junction (no touch)",
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{ { 0, -10 }, { 0, 10 } },
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{ { -20, 0 }, { -2, 0 } },
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2,
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( SegSegDistance )
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{
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for( const auto& c : seg_seg_dist_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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BOOST_CHECK_PREDICATE( SegDistanceCorrect, ( c.m_seg_a )( c.m_seg_b )( c.m_exp_dist ) );
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}
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}
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}
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struct SEG_VECTOR_DISTANCE_CASE
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{
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std::string m_case_name;
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SEG m_seg;
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VECTOR2I m_vec;
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int m_exp_dist;
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};
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// clang-format off
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static const std::vector<SEG_VECTOR_DISTANCE_CASE> seg_vec_dist_cases = {
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{
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"On endpoint",
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{ { 0, 0 }, { 10, 0 } },
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{ 0, 0 },
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0,
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},
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{
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"On segment",
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{ { 0, 0 }, { 10, 0 } },
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{ 3, 0 },
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0,
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},
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{
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"At side",
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{ { 0, 0 }, { 10, 0 } },
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{ 3, 2 },
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2,
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},
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{
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"At end (collinear)",
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{ { 0, 0 }, { 10, 0 } },
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{ 12, 0 },
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2,
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},
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{
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"At end (not collinear)",
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{ { 0, 0 }, { 1000, 0 } },
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{ 1000 + 200, 200 },
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282, // sqrt(200^2 + 200^2), rounded down
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( SegVecDistance )
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{
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for( const auto& c : seg_vec_dist_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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BOOST_CHECK_PREDICATE( SegVecDistanceCorrect, ( c.m_seg )( c.m_vec )( c.m_exp_dist ) );
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}
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}
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}
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/**
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* Test cases for collisions (with clearance, for no clearance,
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* it's just a SEG_SEG_DISTANCE_CASE of 0)
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*/
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struct SEG_SEG_COLLIDE_CASE
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{
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std::string m_case_name;
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SEG m_seg_a;
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SEG m_seg_b;
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int m_clearance;
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bool m_exp_coll;
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};
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// clang-format off
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static const std::vector<SEG_SEG_COLLIDE_CASE> seg_seg_coll_cases = {
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{
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"Parallel, 10 apart, 5 clear",
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{ { 0, 0 }, { 10, 0 } },
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{ { 0, 10 }, { 10, 10 } },
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5,
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false,
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},
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{
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"Parallel, 10 apart, 10 clear",
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{ { 0, 0 }, { 10, 0 } },
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{ { 0, 10 }, { 10, 10 } },
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10,
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false,
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},
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{
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"Parallel, 10 apart, 11 clear",
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{ { 0, 0 }, { 10, 0 } },
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{ { 0, 10 }, { 10, 10 } },
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11,
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true,
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},
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{
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"T-junction, 2 apart, 2 clear",
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{ { 0, -10 }, { 0, 0 } },
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{ { -20, 0 }, { -2, 0 } },
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2,
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false,
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},
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{
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"T-junction, 2 apart, 3 clear",
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{ { 0, -10 }, { 0, 0 } },
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{ { -20, 0 }, { -2, 0 } },
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3,
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true,
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( SegSegCollision )
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{
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for( const auto& c : seg_seg_coll_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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BOOST_CHECK_PREDICATE( SegCollideCorrect,
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( c.m_seg_a )( c.m_seg_b )( c.m_clearance )( c.m_exp_coll ) );
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}
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}
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}
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/**
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* Test cases for collinearity
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*/
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struct SEG_VEC_COLLINEAR_CASE
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{
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std::string m_case_name;
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SEG m_seg_a;
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SEG m_seg_b;
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bool m_exp_coll;
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};
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// clang-format off
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static const std::vector<SEG_VEC_COLLINEAR_CASE> seg_vec_collinear_cases = {
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{
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"coincident",
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{ { 0, 0 }, { 10, 0 } },
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{ { 0, 0 }, { 10, 0 } },
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true,
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},
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{
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"end-to-end",
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{ { 0, 0 }, { 10, 0 } },
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{ { 10, 0 }, { 20, 0 } },
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true,
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},
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{
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"In segment",
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{ { 0, 0 }, { 10, 0 } },
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{ { 4, 0 }, { 7, 0 } },
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true,
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},
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{
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"At side, parallel",
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{ { 0, 0 }, { 10, 0 } },
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{ { 4, 1 }, { 7, 1 } },
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false,
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},
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{
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"crossing",
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{ { 0, 0 }, { 10, 0 } },
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{ { 5, -5 }, { 5, 5 } },
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false,
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},
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};
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// clang-format on
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BOOST_AUTO_TEST_CASE( SegVecCollinear )
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{
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for( const auto& c : seg_vec_collinear_cases )
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{
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BOOST_TEST_CONTEXT( c.m_case_name )
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{
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BOOST_CHECK_PREDICATE(
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SegCollinearCorrect, ( c.m_seg_a )( c.m_seg_b )( c.m_exp_coll ) );
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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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