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e328a136fc
* use c++20 concepts and numbers for lmms_constants.h * replace lmms::numbers::sqrt2 with std::numbers::sqrt2 * replace lmms::numbers::e with std::numbers::e Also replace the only use of lmms::numbers::inv_e with a local constexpr instead * remove lmms::numbers::pi_half and lmms::numbers::pi_sqr They were only used in one or two places each * replace lmms::numbers::pi with std::numbers::pi * add #include <numbers> to every file touched so far This is probably not needed for some of these files. I'll remove those later * Remove lmms::numbers Rest in peace lmms::numbers::tau, my beloved * Add missing #include <numbers> * replace stray use of F_EPSILON with approximatelyEqual() * make many constants inline constexpr A lot of the remaining constants in lmms_constants.h are specific to SaProcessor. If they are only used there, shouldn't they be in SaProcessor.h? * ok then, it's allowed to be signed * remove #include "lmms_constants.h" for files that don't need it - And also move F_EPSILON into lmms_math.h - And also add an overload for fast_rand() to specify a higher and lower bound - And a bunch of other nonsense * ok then, it's allowed to be inferred * ok then, it can accept an integral * fix typo * appease msvc * appease msvc again * Replace linearInterpolate with std::lerp() As well as time travel to undo several foolish decisions and squash tiny commits together * Fix msvc constexpr warnings * Fix msvc float to double truncation warning * Apply two suggestions from code review Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com> * Apply suggestions from code review Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com> * fix silly mistake * Remove SlicerT's dependence on lmms_math.h * Allow more type inference on fastRand() and fastPow10f() * Apply suggestions from code review Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com> * Clean up fastRand() a little bit more --------- Co-authored-by: Dalton Messmer <messmer.dalton@gmail.com>
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/* ColorHelper.h - Helper methods for color related algorithms, etc.
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*
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* Copyright (c) 2024- Michael Gregorius
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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_GUI_COLOR_HELPER_H
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#define LMMS_GUI_COLOR_HELPER_H
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#include <cmath>
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#include <QColor>
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namespace lmms::gui
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{
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class ColorHelper
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{
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public:
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static QColor interpolateInRgb(const QColor& a, const QColor& b, float t)
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{
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qreal ar, ag, ab, aa;
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a.getRgbF(&ar, &ag, &ab, &aa);
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qreal br, bg, bb, ba;
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b.getRgbF(&br, &bg, &bb, &ba);
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const auto t2 = static_cast<qreal>(t);
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const float interH = std::lerp(ar, br, t2);
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const float interS = std::lerp(ag, bg, t2);
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const float interV = std::lerp(ab, bb, t2);
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const float interA = std::lerp(aa, ba, t2);
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return QColor::fromRgbF(interH, interS, interV, interA);
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}
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};
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} // namespace lmms::gui
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#endif // LMMS_GUI_COLOR_HELPER_H
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