color4d_test_utils.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 KiCad Developers, see AUTHORS.TXT for contributors.
 *
 * 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,
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
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#ifndef QA_COMMON_COLOR4D_TEST_UTILS__H
#define QA_COMMON_COLOR4D_TEST_UTILS__H
 
#include <gal/color4d.h>
 
#include <qa_utils/numeric.h>
 
namespace KI_TEST
{
inline bool IsColorNear( const KIGFX::COLOR4D& aCol, const KIGFX::COLOR4D aOther, double aTol )
{
    return KI_TEST::IsWithin<double>( aCol.r, aOther.r, aTol )
           && KI_TEST::IsWithin<double>( aCol.g, aOther.g, aTol )
           && KI_TEST::IsWithin<double>( aCol.b, aOther.b, aTol )
           && KI_TEST::IsWithin<double>( aCol.a, aOther.a, aTol );
}
 
inline bool IsColorNearHex( const KIGFX::COLOR4D& aCol, unsigned char r, unsigned char g,
        unsigned char b, unsigned char a )
{
    const double tol = 0.5 / 255.0; // One bit of quantised error
 
    return KI_TEST::IsWithin<double>( aCol.r, r / 255.0, tol )
           && KI_TEST::IsWithin<double>( aCol.g, g / 255.0, tol )
           && KI_TEST::IsWithin<double>( aCol.b, b / 255.0, tol )
           && KI_TEST::IsWithin<double>( aCol.a, a / 255.0, tol );
}
} // namespace KI_TEST
 
#endif // QA_COMMON_COLOR4D_TEST_UTILS__H