kicad/qa/libs/kimath/geometry/test_shape_poly_set_distanc...

161 lines
5.3 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 CERN
* @author Alejandro García Montoro <alejandro.garciamontoro@gmail.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* 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
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <qa_utils/wx_utils/unit_test_utils.h>
#include <convert_to_biu.h>
#include <geometry/shape_poly_set.h>
#include <qa_utils/geometry/poly_set_construction.h>
#include <qa_utils/geometry/seg_construction.h>
#include <qa_utils/geometry/geometry.h>
/// Mock up a conversion function
constexpr static double IU_PER_MM = 1e3;
constexpr static inline int Millimeter2iu( double mm )
{
return (int) ( mm < 0 ? mm * IU_PER_MM - 0.5 : mm * IU_PER_MM + 0.5 );
}
/**
* Declares the Boost test suite fixture.
*/
BOOST_AUTO_TEST_SUITE( SPSDistance )
struct SPS_DISTANCE_TO_SEG_CASE
{
std::string m_case_name;
/// list of lists of polygon points
SHAPE_POLY_SET m_polyset;
/// the segment to check distance to
SEG m_seg;
int m_seg_width;
/// The expected answer
int m_exp_dist;
};
static std::vector<SPS_DISTANCE_TO_SEG_CASE> GetSPSSegDistCases()
{
namespace KT = KI_TEST;
std::vector<SPS_DISTANCE_TO_SEG_CASE> cases;
// Single 10mm square at origin
const SHAPE_POLY_SET square_10mm_0_0 = KT::BuildPolyset( {
KT::BuildSquareChain( Millimeter2iu( 10 ) ),
} );
// Double square: 10mm each, one at (0, 0), one at (10, 0)
const SHAPE_POLY_SET squares_10mm_0_0_and_20_0 = KT::BuildPolyset( {
KT::BuildSquareChain( Millimeter2iu( 10 ) ),
KT::BuildSquareChain( Millimeter2iu( 10 ), //
{ Millimeter2iu( 20 ), Millimeter2iu( 0 ) } ),
} );
// Hollow square: 10mm hole in 20mm square, at origin
const SHAPE_POLY_SET hollow_square_20_10_at_0_0 =
KT::BuildHollowSquare( Millimeter2iu( 20 ), Millimeter2iu( 10 ) );
cases.push_back( {
"Square poly -> 1D segment",
square_10mm_0_0,
KT::BuildHSeg( { Millimeter2iu( 0 ), Millimeter2iu( 15 ) }, Millimeter2iu( 10 ) ),
Millimeter2iu( 0 ), // 1-d segment
Millimeter2iu( 10 ),
} );
cases.push_back( {
"Square poly -> 2D (thick) segment",
square_10mm_0_0,
KT::BuildHSeg( { Millimeter2iu( 0 ), Millimeter2iu( 15 ) }, Millimeter2iu( 10 ) ),
Millimeter2iu( 2 ), // thick segment
Millimeter2iu( 9 ),
} );
cases.push_back( {
"Two Squares poly -> 2D segment (nearest second square)", squares_10mm_0_0_and_20_0,
KT::BuildHSeg( { Millimeter2iu( 15 ), Millimeter2iu( 15 ) }, Millimeter2iu( 10 ) ),
Millimeter2iu( 2 ), // thick segment
Millimeter2iu( 9 ), // from line to second square
} );
cases.push_back( {
"Square poly -> one intersect", square_10mm_0_0,
KT::BuildHSeg( { Millimeter2iu( -5 ), Millimeter2iu( 0 ) }, Millimeter2iu( 10 ) ),
Millimeter2iu( 0 ), // 1-d segment
Millimeter2iu( 0 ), // intersect
} );
cases.push_back( {
"Square poly -> multiple intersection", square_10mm_0_0,
KT::BuildHSeg( { Millimeter2iu( -5 ), Millimeter2iu( 0 ) }, Millimeter2iu( 20 ) ),
Millimeter2iu( 0 ), // 1-d segment
Millimeter2iu( 0 ), // intersect
} );
cases.push_back( {
"Square poly -> 1D seg touching", square_10mm_0_0,
// touch left side at (-5, 0)
KT::BuildHSeg( { Millimeter2iu( -10 ), Millimeter2iu( 0 ) }, Millimeter2iu( 5 ) ),
Millimeter2iu( 0 ), // 2D segment
Millimeter2iu( 0 ), // intersect
} );
cases.push_back( {
"Square poly -> 2D seg (end cap is nearest)", square_10mm_0_0,
KT::BuildHSeg( { Millimeter2iu( -20 ), Millimeter2iu( 0 ) }, Millimeter2iu( 10 ) ),
Millimeter2iu( 2 ), // 2D segment, 1mm cap radius
Millimeter2iu( 4 ), // 4mm short, 5mm to wire end, -1mm radius
} );
return cases;
};
/**
* Check segment distances
*/
BOOST_AUTO_TEST_CASE( SegDistance )
{
for( const auto& c : GetSPSSegDistCases() )
{
BOOST_TEST_CONTEXT( c.m_case_name )
{
SHAPE_POLY_SET polyset = c.m_polyset;
int dist = sqrt( polyset.SquaredDistance( c.m_seg ) ) - ( c.m_seg_width / 2 );
// right answer?
BOOST_CHECK_PREDICATE( KI_TEST::IsWithin<int>, ( dist )( c.m_exp_dist )( 1 ) );
}
}
}
BOOST_AUTO_TEST_SUITE_END()