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73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce::dsp
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{
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/**
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Represents an increasing phase value between 0 and 2*pi.
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This represents a value which can be incremented, and which wraps back to 0 when it
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goes past 2 * pi.
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@tags{DSP}
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*/
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template <typename Type>
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struct Phase
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{
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/** Resets the phase to 0. */
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void reset() noexcept { phase = 0; }
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/** Returns the current value, and increments the phase by the given increment.
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The increment must be a positive value, it can't go backwards!
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The new value of the phase after calling this function will be (phase + increment) % (2 * pi).
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*/
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Type advance (Type increment) noexcept
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{
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jassert (increment >= 0); // cannot run this value backwards!
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auto last = phase;
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auto next = last + increment;
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while (next >= MathConstants<Type>::twoPi)
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next -= MathConstants<Type>::twoPi;
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phase = next;
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return last;
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}
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Type phase = 0;
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};
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} // namespace juce::dsp
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