68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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namespace 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 dsp
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} // namespace juce
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