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| 1 | +// Copyright 2013 The Flutter Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a BSD-style license that can be |
| 3 | +// found in the LICENSE file. |
| 4 | + |
| 5 | +#include "impeller/scene/animation/animation.h" |
| 6 | + |
| 7 | +#include <algorithm> |
| 8 | +#include <cstring> |
| 9 | +#include <memory> |
| 10 | +#include <vector> |
| 11 | + |
| 12 | +#include "impeller/geometry/quaternion.h" |
| 13 | +#include "impeller/scene/importer/scene_flatbuffers.h" |
| 14 | +#include "impeller/scene/node.h" |
| 15 | + |
| 16 | +namespace impeller { |
| 17 | +namespace scene { |
| 18 | + |
| 19 | +std::shared_ptr<Animation> Animation::MakeFromFlatbuffer( |
| 20 | + const fb::Animation& animation, |
| 21 | + const std::vector<std::shared_ptr<Node>>& scene_nodes) { |
| 22 | + auto result = std::shared_ptr<Animation>( new Animation()); |
| 23 | + |
| 24 | + result->name_ = animation.name()->str(); |
| 25 | + for (auto channel : *animation.channels()) { |
| 26 | + if (channel->node() < 0 || |
| 27 | + static_cast<size_t>(channel->node()) >= scene_nodes.size() || |
| 28 | + !channel->timeline()) { |
| 29 | + continue; |
| 30 | + } |
| 31 | + |
| 32 | + Animation::Channel out_channel; |
| 33 | + out_channel.bind_target.node_name = scene_nodes[channel->node()]->GetName(); |
| 34 | + |
| 35 | + auto* times = channel->timeline(); |
| 36 | + std::vector<Scalar> out_times; |
| 37 | + out_times.resize(channel->timeline()->size()); |
| 38 | + std::copy(times->begin(), times->end(), out_times.begin()); |
| 39 | + |
| 40 | + // TODO(bdero): Why are the entries in the keyframe value arrays not |
| 41 | + // contiguous in the flatbuffer? We should be able to get rid |
| 42 | + // of the subloops below and just memcpy instead. |
| 43 | + switch (channel->keyframes_type()) { |
| 44 | + case fb::Keyframes::TranslationKeyframes: { |
| 45 | + out_channel.bind_target.property = Animation::Property::kTranslation; |
| 46 | + auto* keyframes = channel->keyframes_as_TranslationKeyframes(); |
| 47 | + if (!keyframes->values()) { |
| 48 | + continue; |
| 49 | + } |
| 50 | + std::vector<Vector3> out_values; |
| 51 | + out_values.resize(keyframes->values()->size()); |
| 52 | + for (size_t value_i = 0; value_i < keyframes->values()->size(); |
| 53 | + value_i++) { |
| 54 | + auto val = (*keyframes->values())[value_i]; |
| 55 | + out_values[value_i] = Vector3(val->x(), val->y(), val->z()); |
| 56 | + } |
| 57 | + out_channel.resolver = PropertyResolver::MakeTranslationTimeline( |
| 58 | + std::move(out_times), std::move(out_values)); |
| 59 | + break; |
| 60 | + } |
| 61 | + case fb::Keyframes::RotationKeyframes: { |
| 62 | + out_channel.bind_target.property = Animation::Property::kRotation; |
| 63 | + auto* keyframes = channel->keyframes_as_RotationKeyframes(); |
| 64 | + if (!keyframes->values()) { |
| 65 | + continue; |
| 66 | + } |
| 67 | + std::vector<Quaternion> out_values; |
| 68 | + out_values.resize(keyframes->values()->size()); |
| 69 | + for (size_t value_i = 0; value_i < keyframes->values()->size(); |
| 70 | + value_i++) { |
| 71 | + auto val = (*keyframes->values())[value_i]; |
| 72 | + out_values[value_i] = |
| 73 | + Quaternion(val->x(), val->y(), val->z(), val->w()); |
| 74 | + } |
| 75 | + out_channel.resolver = PropertyResolver::MakeRotationTimeline( |
| 76 | + std::move(out_times), std::move(out_values)); |
| 77 | + break; |
| 78 | + } |
| 79 | + case fb::Keyframes::ScaleKeyframes: { |
| 80 | + out_channel.bind_target.property = Animation::Property::kScale; |
| 81 | + auto* keyframes = channel->keyframes_as_ScaleKeyframes(); |
| 82 | + if (!keyframes->values()) { |
| 83 | + continue; |
| 84 | + } |
| 85 | + std::vector<Vector3> out_values; |
| 86 | + out_values.resize(keyframes->values()->size()); |
| 87 | + for (size_t value_i = 0; value_i < keyframes->values()->size(); |
| 88 | + value_i++) { |
| 89 | + auto val = (*keyframes->values())[value_i]; |
| 90 | + out_values[value_i] = Vector3(val->x(), val->y(), val->z()); |
| 91 | + } |
| 92 | + out_channel.resolver = PropertyResolver::MakeScaleTimeline( |
| 93 | + std::move(out_times), std::move(out_values)); |
| 94 | + break; |
| 95 | + } |
| 96 | + case fb::Keyframes::NONE: |
| 97 | + continue; |
| 98 | + } |
| 99 | + |
| 100 | + result->end_time_ = |
| 101 | + std::max(result->end_time_, out_channel.resolver->GetEndTime()); |
| 102 | + result->channels_.push_back(std::move(out_channel)); |
| 103 | + } |
| 104 | + |
| 105 | + return result; |
| 106 | +} |
| 107 | + |
| 108 | +Animation::Animation() = default; |
| 109 | + |
| 110 | +Animation::~Animation() = default; |
| 111 | + |
| 112 | +const std::string& Animation::GetName() const { |
| 113 | + return name_; |
| 114 | +} |
| 115 | + |
| 116 | +const std::vector<Animation::Channel>& Animation::GetChannels() const { |
| 117 | + return channels_; |
| 118 | +} |
| 119 | + |
| 120 | +Scalar Animation::GetEndTime() const { |
| 121 | + return end_time_; |
| 122 | +} |
| 123 | + |
| 124 | +} // namespace scene |
| 125 | +} // namespace impeller |
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