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9aa937d391
* add templates for common geometric constants * oops missed one * LD_2PI -> LD_PI i re-added the wrong constant ffs * CamelCase names and also verify compilation without -DLMMS_MINIMAL * C++20 stuff Updated to account for `<numbers>` and C++20: - Marked all `lmms_constants.h` constants with an exact equivalent in `<numbers>` as deprecated - Removed all `lmms_constants.h` constants where no variant is currently in use - Using `inline constexpr` - Using `std::floating_point` concept instead of `typename` * add lmms::numbers namespace * Remove panning_constants.h Moves the four constants in panning_constants.h into panning.h, then removes panning.h. * Use std::exp(n) instead of powf(numbers::e, n) * Use C++ std math functions Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com> * Use overloaded std math functions An attempt to fix compiler warnings on some platforms * Remove uses of __USE_XOPEN And also update two functions I missed from the previous commit * Missed a few * Fix ANOTHER std math function use Of course there's another one --------- Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com>
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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* panning.h - declaration of some types, concerning the
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* panning of a note
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*
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* Copyright (c) 2004-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef LMMS_PANNING_H
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#define LMMS_PANNING_H
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#include "lmms_basics.h"
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#include "Midi.h"
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#include "volume.h"
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#include <cmath>
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namespace lmms
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{
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inline constexpr panning_t PanningRight = 100;
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inline constexpr panning_t PanningLeft = -PanningRight;
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inline constexpr panning_t PanningCenter = 0;
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inline constexpr panning_t DefaultPanning = PanningCenter;
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inline StereoVolumeVector panningToVolumeVector( panning_t _p,
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float _scale = 1.0f )
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{
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StereoVolumeVector v = { { _scale, _scale } };
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const float pf = _p / 100.0f;
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v.vol[_p >= PanningCenter ? 0 : 1] *= 1.0f - std::abs(pf);
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return v;
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}
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inline int panningToMidi( panning_t _p )
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{
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return MidiMinPanning + (int) (
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( (float)( _p - PanningLeft ) ) /
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( (float)( PanningRight - PanningLeft ) ) *
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( (float)( MidiMaxPanning - MidiMinPanning ) ) );
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}
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} // namespace lmms
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#endif // LMMS_PANNING_H
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