mirror of
https://github.com/juce-framework/JUCE.git
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291 lines
9 KiB
C++
291 lines
9 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
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{
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//==============================================================================
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class DelayAnimator : public Animator::Impl
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{
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public:
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double getDurationMs() const override { return delayMs; }
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static Animator build (double delayMsIn, std::function<void()> callbackIn = nullptr)
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{
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return Animator { rawToUniquePtr (new DelayAnimator (delayMsIn, std::move (callbackIn))) };
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}
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private:
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DelayAnimator (double delayMsIn, std::function<void()> callbackIn)
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: onCompletion (std::move (callbackIn)),
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delayMs (delayMsIn)
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{
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}
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Animator::Status internalUpdate (double timestampMs) override
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{
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if (timestampMs - startedAtMs >= delayMs)
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return Animator::Status::finished;
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return Animator::Status::inProgress;
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}
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void onStart (double timeMs) override { startedAtMs = timeMs; }
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void onComplete() override { NullCheckedInvocation::invoke (onCompletion); }
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std::function<void()> onCompletion;
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double startedAtMs = 0.0, delayMs = 0.0;
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};
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//==============================================================================
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struct AnimatorSetData
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{
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explicit AnimatorSetData (Animator root)
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: roots { root }, entries { { root, {} } } {}
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struct Entry
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{
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std::optional<Animator> parent; // If no parent, this is the root node
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std::set<Animator, Animator::Compare> children;
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};
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auto getRoots() const { return roots; }
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auto getChildren (const Animator& a) const
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{
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if (const auto iter = entries.find (a); iter != entries.end())
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return iter->second.children;
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return std::set<Animator, Animator::Compare>();
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}
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std::set<Animator, Animator::Compare> roots;
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std::map<Animator, Entry, Animator::Compare> entries;
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std::function<double (double)> timeTransform;
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};
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class AnimatorSet : public Animator::Impl
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{
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public:
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explicit AnimatorSet (AnimatorSetData dataIn) : data (std::move (dataIn)) {}
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double getDurationMs() const override
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{
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const auto roots = data.getRoots();
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return getMaxDuration (roots.begin(), roots.end());
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}
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private:
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void onStart (double timestampMs) override
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{
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startedAtMs = timestampMs;
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active = data.getRoots();
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for (const auto& i : active)
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i.start();
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}
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void onComplete() override {}
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Animator::Status internalUpdate (double timestampMs) override
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{
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const auto internalTimestampMs = [&]
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{
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if (data.timeTransform == nullptr)
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return timestampMs;
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return data.timeTransform (timestampMs - startedAtMs);
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}();
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if (isComplete())
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{
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for (auto i : active)
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i.complete();
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while (updateAnimatorSet (internalTimestampMs) != Animator::Status::finished)
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{
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}
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return Animator::Status::finished;
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}
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return updateAnimatorSet (internalTimestampMs);
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}
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Animator::Status updateAnimatorSet (double timestampMs)
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{
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std::set<Animator, Animator::Compare> animatorsToRemove;
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const auto currentlyActive = active;
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for (const auto& animator : currentlyActive)
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{
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const auto status = animator.update (timestampMs);
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if (status == Animator::Status::finished)
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{
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animatorsToRemove.insert (animator);
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for (const auto& j : data.getChildren (animator))
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{
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j.start();
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if (isComplete())
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j.complete();
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active.insert (j);
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}
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}
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}
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for (auto i : animatorsToRemove)
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active.erase (i);
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return active.empty() ? Animator::Status::finished : Animator::Status::inProgress;
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}
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template <typename It>
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double getMaxDuration (It begin, It end) const
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{
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return std::accumulate (begin, end, 0.0, [this] (const auto acc, const auto& anim)
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{
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const auto children = data.getChildren (anim);
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return std::max (acc, anim.getDurationMs() + getMaxDuration (children.begin(), children.end()));
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});
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}
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const AnimatorSetData data;
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std::set<Animator, Animator::Compare> active;
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double startedAtMs = 0.0;
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};
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//==============================================================================
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struct AnimatorSetBuilder::AnimatorSetBuilderState
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{
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explicit AnimatorSetBuilderState (Animator animator)
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: data (std::move (animator)) {}
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bool valid = true;
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AnimatorSetData data;
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};
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AnimatorSetBuilder::AnimatorSetBuilder (Animator startingAnimator)
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: AnimatorSetBuilder (startingAnimator,
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std::make_shared<AnimatorSetBuilderState> (startingAnimator))
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{}
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AnimatorSetBuilder::AnimatorSetBuilder (double delayMs)
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: AnimatorSetBuilder (DelayAnimator::build (delayMs, nullptr))
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{}
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AnimatorSetBuilder::AnimatorSetBuilder (std::function<void()> cb)
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: AnimatorSetBuilder (DelayAnimator::build (0.0, std::move (cb)))
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{}
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AnimatorSetBuilder::AnimatorSetBuilder (std::shared_ptr<AnimatorSetBuilderState> dataIn)
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: cursor (*dataIn->data.getRoots().begin()), state (std::move (dataIn))
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{}
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AnimatorSetBuilder::AnimatorSetBuilder (Animator cursorIn, std::shared_ptr<AnimatorSetBuilderState> dataIn)
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: cursor (cursorIn), state (std::move (dataIn))
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{}
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AnimatorSetBuilder AnimatorSetBuilder::togetherWith (Animator animator)
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{
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add (state->data.entries.at (cursor).parent, animator);
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return { animator, state };
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}
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AnimatorSetBuilder AnimatorSetBuilder::followedBy (Animator animator)
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{
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add (cursor, animator);
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return { animator, state };
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}
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void AnimatorSetBuilder::add (std::optional<Animator> parent, Animator child)
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{
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state->data.entries.emplace (child, AnimatorSetData::Entry { parent, {} });
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if (parent.has_value())
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state->data.entries.at (*parent).children.insert (child);
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else
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state->data.roots.insert (child);
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}
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Animator AnimatorSetBuilder::build()
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{
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if (state == nullptr)
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{
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/* If you're hitting this assertion, you've already used this AnimatorSetBuilder to build an
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AnimatorSet.
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To create another AnimatorSet you need to use another AnimatorSetBuilder independently
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created with the AnimatorSetBuilder (Animator) constructor.
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*/
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jassertfalse;
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return ValueAnimatorBuilder{}.build();
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}
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auto animator = Animator { std::make_unique<AnimatorSet> (std::move (state->data)) };
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state = nullptr;
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return animator;
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}
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AnimatorSetBuilder AnimatorSetBuilder::followedBy (double delayMs)
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{
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return followedBy (DelayAnimator::build (delayMs, nullptr));
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}
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AnimatorSetBuilder AnimatorSetBuilder::followedBy (std::function<void()> cb)
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{
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return followedBy (DelayAnimator::build (0.0, std::move (cb)));
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}
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AnimatorSetBuilder AnimatorSetBuilder::togetherWith (double delayMs)
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{
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return togetherWith (DelayAnimator::build (delayMs, nullptr));
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}
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AnimatorSetBuilder AnimatorSetBuilder::togetherWith (std::function<void()> cb)
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{
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return togetherWith (DelayAnimator::build (0.0, std::move (cb)));
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}
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AnimatorSetBuilder AnimatorSetBuilder::withTimeTransform (std::function<double (double)> timeTransformIn)
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{
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state->data.timeTransform = std::move (timeTransformIn);
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return *this;
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}
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} // namespace juce
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