kicad/qa/geometry/test_chamfer_fillet.cpp

160 lines
5.9 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 <boost/test/unit_test.hpp>
#include <boost/test/test_case_template.hpp>
#include <geometry/shape_poly_set.h>
#include <geometry/shape_line_chain.h>
#include <polygon/PolyLine.h>
#include <algorithm>
#include <qa/data/fixtures_geometry.h>
/**
* Declares the ChamferFilletFixture struct as the boost test fixture.
*/
BOOST_FIXTURE_TEST_SUITE( ChamferFillet, ChamferFilletFixture )
/**
* Function lexicographicOrder
* defines a lexicographic order between two VECTOR2I objects. Used along with std::sort
* when checking that two polygons have the same vertices.
* @param i is a VECTOR2I object.
* @param j is a VECTOR2I object.
* @return bool - true if (i.x, i.y) < (j.x, j.y) using the lexicographic order,
* i.e., i.x < j.x or i.x = j.x and i.y < j.y; false in any other case.
*/
bool lexicographicOrder( VECTOR2I i, VECTOR2I j )
{
if( i.x != j.x )
return( i.x < j.x );
else
return( i.y < j.y );
}
/**
* Function TestLineChainEqualCPolyLine
* tests the equality between a SHAPE_LINE_CHAIN polygon and a polygon inside a
* CPolyLine object using Boost test suite.
* @param lineChain is a SHAPE_LINE_CHAIN polygon object.
* @param polyLine is a CPolyLine polygon object.
* @param contourIdx is the index of the contour inside polyLine that has to be tested
* against lineChain.
*/
void TestLineChainEqualCPolyLine(SHAPE_LINE_CHAIN& lineChain, CPolyLine& polyLine,
int contourIdx = 0)
{
// Arrays to store the polygon points lexicographically ordered
std::vector<VECTOR2I> chainPoints;
std::vector<VECTOR2I> polyPoints;
// Populate the array storing the new data with the lineChain corners
for (int pointIdx = 0; pointIdx < lineChain.PointCount(); pointIdx++) {
chainPoints.push_back(lineChain.Point(pointIdx));
}
int start = polyLine.GetContourStart(contourIdx);
int end = polyLine.GetContourEnd(contourIdx);
// Populate the array storing the legacy data with the polyLine corners
for (int pointIdx = start; pointIdx <= end; pointIdx++) {
polyPoints.push_back( VECTOR2I(polyLine.GetX(pointIdx), polyLine.GetY(pointIdx)) );
}
// Order the vectors in a lexicographic way
std::sort(chainPoints.begin(), chainPoints.end(), lexicographicOrder);
std::sort(polyPoints.begin(), polyPoints.end(), lexicographicOrder);
// Compare every point coordinate to check the equality
BOOST_CHECK_EQUAL_COLLECTIONS(chainPoints.begin(), chainPoints.end(),
polyPoints.begin(), polyPoints.end());
}
/**
* Tests the SHAPE_POLY_SET::ChamferPolygon, which has been refactored into SHAPE_POLY_SET from
* CPolyLine::Chamfer. Assuming the code in CPolyLine is right, this test ensures the behaviour of
* the new refactored code does not change anything.
*/
BOOST_AUTO_TEST_CASE( Chamfer )
{
SHAPE_POLY_SET::POLYGON actual;
CPolyLine expected;
// Test different distances, up to the half of the minimum segment longitude
for (int distance = 0; distance < 5; distance++) {
// Chamfered polygon to be tested.
actual = common.holeyPolySet.ChamferPolygon( distance, 0 );
// Chamfered polygon assumed to be right.
expected = *legacyPolyLine.Chamfer( distance );
// Double check that there are no repeated corners in the legacy shape.
expected.RemoveNullSegments();
// Test equality
for (size_t contourIdx = 0; contourIdx < actual.size(); contourIdx++)
{
TestLineChainEqualCPolyLine(actual[contourIdx], expected, contourIdx);
}
}
}
/**
* Tests the SHAPE_POLY_SET::FilletPolygon, which has been refactored into
* SHAPE_POLY_SET from CPolyLine::Fillet.
* Assuming the code in CPolyLine is right, this test ensures the behaviour of the new
* refactored code does not change anything.
*/
BOOST_AUTO_TEST_CASE( Fillet )
{
SHAPE_POLY_SET::POLYGON actual;
CPolyLine expected;
// Test different radius, up to the half of the minimum segment longitude
for (int radius = 1; radius < 5; radius++)
{
// Test different number of segments
for (size_t segments = 1; segments < 100; segments++)
{
// Chamfered polygon to be tested.
actual = common.holeyPolySet.FilletPolygon( radius, segments, 0 );
// Chamfered polygon assumed to be right.
expected = *legacyPolyLine.Fillet( radius, segments );
// Double check that there are no repeated corners in the legacy shape.
expected.RemoveNullSegments();
// Test equality
for (size_t contourIdx = 0; contourIdx < actual.size(); contourIdx++)
{
TestLineChainEqualCPolyLine(actual[contourIdx], expected, contourIdx);
}
}
}
}
BOOST_AUTO_TEST_SUITE_END()