mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel SuslaandFacebook GitHub Bot
310bd4e5bb
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/52984 changelog: [internal] breaks Github CI, let's back it out for now. Original commit changeset: 141f0ce7b993 Original Phabricator Diff: D79184118 Reviewed By: rubennorte Differential Revision: D79444246 fbshipit-source-id: 8aa35ed450804c77389601a4ea820b1dd552ad98
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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/*
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* Adapted from react-native-windows under the MIT license.
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*/
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#include "DecayAnimationDriver.h"
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#include <react/debug/react_native_assert.h>
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#include <react/renderer/animated/nodes/ValueAnimatedNode.h>
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namespace facebook::react {
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DecayAnimationDriver::DecayAnimationDriver(
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int id,
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Tag animatedValueTag,
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std::optional<AnimationEndCallback> endCallback,
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folly::dynamic config,
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NativeAnimatedNodesManager* manager)
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: AnimationDriver(
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id,
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animatedValueTag,
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std::move(endCallback),
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std::move(config),
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manager),
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velocity_(config_["velocity"].asDouble()),
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deceleration_(config_["deceleration"].asDouble()) {
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react_native_assert(deceleration_ > 0);
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}
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std::tuple<float, double> DecayAnimationDriver::getValueAndVelocityForTime(
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double time) const {
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const auto value = fromValue_.value() +
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velocity_ / (1 - deceleration_) *
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(1 - std::exp(-(1 - deceleration_) * (1000 * time)));
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return std::make_tuple(
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static_cast<float>(value),
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42.0f); // we don't need the velocity, so set it to a dummy value
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}
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bool DecayAnimationDriver::update(double timeDeltaMs, bool restarting) {
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if (const auto node =
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manager_->getAnimatedNode<ValueAnimatedNode>(animatedValueTag_)) {
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if (restarting) {
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const auto value = node->getRawValue();
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if (!fromValue_.has_value()) {
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// First iteration, assign fromValue based on AnimatedValue
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fromValue_ = value;
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} else {
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// Not the first iteration, reset AnimatedValue based on
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// originalValue
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if (node->setRawValue(fromValue_.value())) {
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markNodeUpdated(node->tag());
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}
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}
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lastValue_ = value;
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}
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const auto [value, velocity] =
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getValueAndVelocityForTime(timeDeltaMs / 1000.0);
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auto isComplete =
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lastValue_.has_value() && std::abs(value - lastValue_.value()) < 0.1;
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if (!restarting && isComplete) {
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return true;
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} else {
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lastValue_ = value;
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if (node->setRawValue(value)) {
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markNodeUpdated(node->tag());
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}
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return false;
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}
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}
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return true;
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}
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} // namespace facebook::react
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