QA: Test arc to polylines - this has a bug
Add unit test of SHAPE_ARC::ConvertToPolyline. This function has a bug when the arc is of zero radius. This test shows the bug, but does not fix it yet.
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John Beard
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427f0aed78
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ce84c19a38
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@ -31,6 +31,7 @@
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#include <geometry/shape_poly_set.h>
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#include <unit_test_utils/numeric.h>
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#include <unit_test_utils/unit_test_utils.h>
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/**
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* @brief Utility functions for testing geometry functions.
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@ -81,7 +82,7 @@ bool IsInQuadrant( const VECTOR2<T>& aPoint, QUADRANT aQuadrant )
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/*
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* @Brief Check if both ends of a segment are in Quadrant 1
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*/
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bool SegmentCompletelyInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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inline bool SegmentCompletelyInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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{
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return IsInQuadrant( aSeg.A, aQuadrant)
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&& IsInQuadrant( aSeg.B, aQuadrant );
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@ -90,7 +91,7 @@ bool SegmentCompletelyInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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/*
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* @brief Check if at least one end of the segment is in Quadrant 1
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*/
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bool SegmentEndsInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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inline bool SegmentEndsInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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{
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return IsInQuadrant( aSeg.A, aQuadrant )
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|| IsInQuadrant( aSeg.B, aQuadrant );
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@ -99,14 +100,66 @@ bool SegmentEndsInQuadrant( const SEG& aSeg, QUADRANT aQuadrant )
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/*
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* @brief Check if a segment is entirely within a certain radius of a point.
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*/
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bool SegmentCompletelyWithinRadius( const SEG& aSeg, const VECTOR2I& aPt,
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const int aRadius )
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inline bool SegmentCompletelyWithinRadius( const SEG& aSeg, const VECTOR2I& aPt, const int aRadius )
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{
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// This is true iff both ends of the segment are within the radius
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return ( ( aSeg.A - aPt ).EuclideanNorm() < aRadius )
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&& ( ( aSeg.B - aPt ).EuclideanNorm() < aRadius );
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}
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/**
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* Check that two points are the given distance apart, within the given tolerance.
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*
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* @tparam T the dimension type
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* @param aPtA the first point
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* @param aPtB the second point
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* @param aExpDist the expected distance
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* @param aTol the permitted tolerance
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*/
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template <typename T>
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bool IsPointAtDistance( const VECTOR2<T>& aPtA, const VECTOR2<T>& aPtB, T aExpDist, T aTol )
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{
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const int dist = ( aPtB - aPtA ).EuclideanNorm();
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const bool ok = KI_TEST::IsWithin( dist, aExpDist, aTol );
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if( !ok )
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{
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BOOST_TEST_INFO( "Points not at expected distance: distance is " << dist << ", expected "
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<< aExpDist );
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}
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return ok;
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}
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/**
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* Predicate for checking a set of points is within a certain tolerance of
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* a circle
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* @param aPoints the points to check
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* @param aCentre the circle centre
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* @param aRad the circle radius
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* @param aTolEnds the tolerance for the endpoint-centre distance
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* @return true if predicate met
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*/
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template <typename T>
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bool ArePointsNearCircle(
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const std::vector<VECTOR2<T>>& aPoints, const VECTOR2<T>& aCentre, T aRad, T aTol )
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{
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bool ok = true;
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for( unsigned i = 0; i < aPoints.size(); ++i )
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{
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if( !IsPointAtDistance( aPoints[i], aCentre, aRad, aTol ) )
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{
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BOOST_TEST_INFO( "Point " << i << " " << aPoints[i] << " is not within tolerance ("
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<< aTol << ") of radius (" << aRad << ") from centre point "
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<< aCentre );
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ok = false;
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}
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}
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return ok;
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}
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/*
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* @brief Check if two vectors are perpendicular
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*
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@ -135,7 +188,7 @@ bool ArePerpendicular( const VECTOR2<T>& a, const VECTOR2<T>& b, double aToleran
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* @param aSize: the side width (must be divisible by 2 if want to avoid rounding)
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* @param aCentre: the centre of the square
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*/
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SHAPE_LINE_CHAIN MakeSquarePolyLine( int aSize, const VECTOR2I& aCentre )
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inline SHAPE_LINE_CHAIN MakeSquarePolyLine( int aSize, const VECTOR2I& aCentre )
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{
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SHAPE_LINE_CHAIN polyLine;
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@ -154,8 +207,7 @@ SHAPE_LINE_CHAIN MakeSquarePolyLine( int aSize, const VECTOR2I& aCentre )
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/*
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* @brief Fillet every polygon in a set and return a new set
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*/
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SHAPE_POLY_SET FilletPolySet( SHAPE_POLY_SET& aPolySet, int aRadius,
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int aError )
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inline SHAPE_POLY_SET FilletPolySet( SHAPE_POLY_SET& aPolySet, int aRadius, int aError )
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{
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SHAPE_POLY_SET filletedPolySet;
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@ -169,6 +221,27 @@ SHAPE_POLY_SET FilletPolySet( SHAPE_POLY_SET& aPolySet, int aRadius,
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return filletedPolySet;
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}
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} // namespace GEOM_TEST
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BOOST_TEST_PRINT_NAMESPACE_OPEN
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{
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template <>
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struct print_log_value<SHAPE_LINE_CHAIN>
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{
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inline void operator()( std::ostream& os, const SHAPE_LINE_CHAIN& c )
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{
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os << "SHAPE_LINE_CHAIN: " << c.PointCount() << " points: [\n";
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for( int i = 0; i < c.PointCount(); ++i )
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{
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os << " " << i << ": " << c.CPoint( i ) << "\n";
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}
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os << "]";
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}
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};
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}
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BOOST_TEST_PRINT_NAMESPACE_CLOSE
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#endif // GEOM_TEST_UTILS_H
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@ -23,10 +23,13 @@
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#include <geometry/shape_arc.h>
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#include <geometry/shape_line_chain.h>
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#include <unit_test_utils/geometry.h>
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#include <unit_test_utils/numeric.h>
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#include <unit_test_utils/unit_test_utils.h>
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#include "geom_test_utils.h"
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BOOST_AUTO_TEST_SUITE( ShapeArc )
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@ -281,4 +284,96 @@ BOOST_AUTO_TEST_CASE( BasicCPAGeom )
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}
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}
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struct ARC_TO_POLYLINE_CASE
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{
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std::string m_ctx_name;
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ARC_CENTRE_PT_ANGLE m_geom;
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};
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/**
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* Predicate for checking a polyline has all the points on (near) a circle of
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* given centre and radius
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* @param aPolyline the polyline to check
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* @param aCentre the circle centre
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* @param aRad the circle radius
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* @param aTolEnds the tolerance for the endpoint-centre distance
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* @return true if predicate met
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*/
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bool ArePolylinePointsNearCircle(
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const SHAPE_LINE_CHAIN& aPolyline, const VECTOR2I& aCentre, int aRad, int aTolEnds )
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{
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std::vector<VECTOR2I> points;
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for( int i = 0; i < aPolyline.PointCount(); ++i )
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{
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points.push_back( aPolyline.CPoint( i ) );
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}
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return GEOM_TEST::ArePointsNearCircle( points, aCentre, aRad, aTolEnds );
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}
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#ifdef HAVE_EXPECTED_FAILURES
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// Failure in zero-radius case
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BOOST_AUTO_TEST_CASE( ArcToPolyline, *boost::unit_test::expected_failures( 1 ) )
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{
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const std::vector<ARC_TO_POLYLINE_CASE> cases = {
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{
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"Zero rad",
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{
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{ 0, 0 },
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{ 0, 0 },
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180,
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},
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},
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{
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"Semicircle",
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{
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{ 0, 0 },
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{ -10, 0 },
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180,
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},
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},
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{
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"Larger semicircle",
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{
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{ 0, 0 },
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{ -1000, 0 },
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180,
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},
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},
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};
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const int width = 0;
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const double accuracy = 1.0;
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for( const auto& c : cases )
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{
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BOOST_TEST_CONTEXT( c.m_ctx_name )
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{
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const SHAPE_ARC this_arc{ c.m_geom.m_center_point, c.m_geom.m_start_point,
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c.m_geom.m_center_angle, width };
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const SHAPE_LINE_CHAIN chain = this_arc.ConvertToPolyline( accuracy );
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BOOST_TEST_MESSAGE( "Polyline has " << chain.PointCount() << " points" );
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BOOST_CHECK_EQUAL( chain.CPoint( 0 ), c.m_geom.m_start_point );
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const int radius = ( c.m_geom.m_center_point - c.m_geom.m_start_point ).EuclideanNorm();
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const int tol = 2;
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BOOST_CHECK_PREDICATE( ArePolylinePointsNearCircle,
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( chain )( c.m_geom.m_center_point )( radius )( tol ) );
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// TODO: check midpoints are near circle too
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}
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}
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}
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#endif // HAVE_EXPECTED_FAILURES
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BOOST_AUTO_TEST_SUITE_END()
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