65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
// Copyright (c) 2018 GeometryFactory Sarl (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Classification/include/CGAL/Classification/compressed_float.h $
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// $Id: compressed_float.h e9d41d7 2020-04-21T10:03:00+02:00 Maxime Gimeno
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Simon Giraudot
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#ifndef CGAL_CLASSIFICATION_COMPRESSED_FLOAT_H
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#define CGAL_CLASSIFICATION_COMPRESSED_FLOAT_H
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#include <CGAL/license/Classification.h>
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namespace CGAL {
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namespace Classification {
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/// \cond SKIP_IN_MANUAL
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#if defined(CGAL_CLASSIFICATION_DO_NOT_COMPRESS_FLOATS)
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typedef float compressed_float;
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inline float compress_float (const float& f, const float&, const float&)
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{
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return f;
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}
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inline float decompress_float<float> (const float& t, const float&, const float&)
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{
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return t;
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}
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#else
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# if defined(CGAL_CLASSIFICATION_COMPRESS_FLOATS_WITH_USHORT)
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typedef unsigned short compressed_float;
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# else // Default = compress with unsigned char
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typedef unsigned char compressed_float;
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# endif
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inline compressed_float compress_float (const float& f, const float& fmin = 0.f, const float& fmax = 1.f)
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{
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return static_cast<compressed_float>
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(float((std::numeric_limits<compressed_float>::max)()) * (f - fmin) / (fmax - fmin));
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}
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inline float decompress_float (const compressed_float& t, const float& fmin = 0.f, const float& fmax = 1.f)
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{
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return ((fmax - fmin) * (t / float((std::numeric_limits<compressed_float>::max)())) + fmin);
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}
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#endif
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/// \endcond
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} // namespace Classification
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} // namespace CGAL
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#endif // CGAL_CLASSIFICATION_COMPRESSED_FLOAT_H
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