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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
505 lines
21 KiB
C++
505 lines
21 KiB
C++
/**************************************************************************/
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/* animation.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef ANIMATION_H
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#define ANIMATION_H
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#include "core/io/resource.h"
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#include "core/templates/local_vector.h"
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#define ANIM_MIN_LENGTH 0.001
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class Animation : public Resource {
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GDCLASS(Animation, Resource);
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RES_BASE_EXTENSION("anim");
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public:
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enum TrackType {
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TYPE_VALUE, ///< Set a value in a property, can be interpolated.
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TYPE_POSITION_3D, ///< Position 3D track
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TYPE_ROTATION_3D, ///< Rotation 3D track
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TYPE_SCALE_3D, ///< Scale 3D track
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TYPE_BLEND_SHAPE, ///< Blend Shape track
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TYPE_METHOD, ///< Call any method on a specific node.
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TYPE_BEZIER, ///< Bezier curve
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TYPE_AUDIO,
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TYPE_ANIMATION,
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};
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enum InterpolationType {
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INTERPOLATION_NEAREST,
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INTERPOLATION_LINEAR,
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INTERPOLATION_CUBIC,
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INTERPOLATION_LINEAR_ANGLE,
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INTERPOLATION_CUBIC_ANGLE,
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};
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enum UpdateMode {
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UPDATE_CONTINUOUS,
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UPDATE_DISCRETE,
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UPDATE_CAPTURE,
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};
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enum LoopMode {
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LOOP_NONE,
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LOOP_LINEAR,
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LOOP_PINGPONG,
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};
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enum LoopedFlag {
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LOOPED_FLAG_NONE,
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LOOPED_FLAG_END,
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LOOPED_FLAG_START,
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};
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enum FindMode {
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FIND_MODE_NEAREST,
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FIND_MODE_APPROX,
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FIND_MODE_EXACT,
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};
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#ifdef TOOLS_ENABLED
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enum HandleMode {
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HANDLE_MODE_FREE,
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HANDLE_MODE_LINEAR,
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HANDLE_MODE_BALANCED,
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HANDLE_MODE_MIRRORED,
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};
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enum HandleSetMode {
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HANDLE_SET_MODE_NONE,
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HANDLE_SET_MODE_RESET,
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HANDLE_SET_MODE_AUTO,
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};
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#endif // TOOLS_ENABLED
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private:
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struct Track {
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TrackType type = TrackType::TYPE_ANIMATION;
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InterpolationType interpolation = INTERPOLATION_LINEAR;
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bool loop_wrap = true;
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NodePath path; // path to something
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bool imported = false;
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bool enabled = true;
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Track() {}
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virtual ~Track() {}
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};
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struct Key {
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real_t transition = 1.0;
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double time = 0.0; // time in secs
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};
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// transform key holds either Vector3 or Quaternion
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template <class T>
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struct TKey : public Key {
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T value;
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};
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const int32_t POSITION_TRACK_SIZE = 5;
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const int32_t ROTATION_TRACK_SIZE = 6;
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const int32_t SCALE_TRACK_SIZE = 5;
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const int32_t BLEND_SHAPE_TRACK_SIZE = 3;
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/* POSITION TRACK */
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struct PositionTrack : public Track {
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Vector<TKey<Vector3>> positions;
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int32_t compressed_track = -1;
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PositionTrack() { type = TYPE_POSITION_3D; }
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};
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/* ROTATION TRACK */
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struct RotationTrack : public Track {
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Vector<TKey<Quaternion>> rotations;
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int32_t compressed_track = -1;
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RotationTrack() { type = TYPE_ROTATION_3D; }
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};
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/* SCALE TRACK */
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struct ScaleTrack : public Track {
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Vector<TKey<Vector3>> scales;
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int32_t compressed_track = -1;
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ScaleTrack() { type = TYPE_SCALE_3D; }
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};
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/* BLEND SHAPE TRACK */
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struct BlendShapeTrack : public Track {
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Vector<TKey<float>> blend_shapes;
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int32_t compressed_track = -1;
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BlendShapeTrack() { type = TYPE_BLEND_SHAPE; }
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};
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/* PROPERTY VALUE TRACK */
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struct ValueTrack : public Track {
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UpdateMode update_mode = UPDATE_CONTINUOUS;
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bool update_on_seek = false;
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Vector<TKey<Variant>> values;
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ValueTrack() {
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type = TYPE_VALUE;
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}
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};
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/* METHOD TRACK */
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struct MethodKey : public Key {
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StringName method;
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Vector<Variant> params;
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};
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struct MethodTrack : public Track {
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Vector<MethodKey> methods;
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MethodTrack() { type = TYPE_METHOD; }
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};
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/* BEZIER TRACK */
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struct BezierKey {
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Vector2 in_handle; //relative (x always <0)
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Vector2 out_handle; //relative (x always >0)
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real_t value = 0.0;
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#ifdef TOOLS_ENABLED
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HandleMode handle_mode = HANDLE_MODE_FREE;
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#endif // TOOLS_ENABLED
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};
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struct BezierTrack : public Track {
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Vector<TKey<BezierKey>> values;
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BezierTrack() {
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type = TYPE_BEZIER;
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}
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};
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/* AUDIO TRACK */
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struct AudioKey {
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Ref<Resource> stream;
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real_t start_offset = 0.0; //offset from start
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real_t end_offset = 0.0; //offset from end, if 0 then full length or infinite
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AudioKey() {
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}
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};
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struct AudioTrack : public Track {
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Vector<TKey<AudioKey>> values;
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AudioTrack() {
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type = TYPE_AUDIO;
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}
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};
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/* AUDIO TRACK */
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struct AnimationTrack : public Track {
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Vector<TKey<StringName>> values;
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AnimationTrack() {
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type = TYPE_ANIMATION;
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}
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};
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Vector<Track *> tracks;
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/*
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template<class T>
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int _insert_pos(double p_time, T& p_keys);*/
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template <class T>
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void _clear(T &p_keys);
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template <class T, class V>
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int _insert(double p_time, T &p_keys, const V &p_value);
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template <class K>
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inline int _find(const Vector<K> &p_keys, double p_time, bool p_backward = false) const;
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_FORCE_INLINE_ Vector3 _interpolate(const Vector3 &p_a, const Vector3 &p_b, real_t p_c) const;
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_FORCE_INLINE_ Quaternion _interpolate(const Quaternion &p_a, const Quaternion &p_b, real_t p_c) const;
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_FORCE_INLINE_ Variant _interpolate(const Variant &p_a, const Variant &p_b, real_t p_c) const;
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_FORCE_INLINE_ real_t _interpolate(const real_t &p_a, const real_t &p_b, real_t p_c) const;
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_FORCE_INLINE_ Variant _interpolate_angle(const Variant &p_a, const Variant &p_b, real_t p_c) const;
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_FORCE_INLINE_ Vector3 _cubic_interpolate_in_time(const Vector3 &p_pre_a, const Vector3 &p_a, const Vector3 &p_b, const Vector3 &p_post_b, real_t p_c, real_t p_pre_a_t, real_t p_b_t, real_t p_post_b_t) const;
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_FORCE_INLINE_ Quaternion _cubic_interpolate_in_time(const Quaternion &p_pre_a, const Quaternion &p_a, const Quaternion &p_b, const Quaternion &p_post_b, real_t p_c, real_t p_pre_a_t, real_t p_b_t, real_t p_post_b_t) const;
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_FORCE_INLINE_ Variant _cubic_interpolate_in_time(const Variant &p_pre_a, const Variant &p_a, const Variant &p_b, const Variant &p_post_b, real_t p_c, real_t p_pre_a_t, real_t p_b_t, real_t p_post_b_t) const;
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_FORCE_INLINE_ real_t _cubic_interpolate_in_time(const real_t &p_pre_a, const real_t &p_a, const real_t &p_b, const real_t &p_post_b, real_t p_c, real_t p_pre_a_t, real_t p_b_t, real_t p_post_b_t) const;
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_FORCE_INLINE_ Variant _cubic_interpolate_angle_in_time(const Variant &p_pre_a, const Variant &p_a, const Variant &p_b, const Variant &p_post_b, real_t p_c, real_t p_pre_a_t, real_t p_b_t, real_t p_post_b_t) const;
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template <class T>
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_FORCE_INLINE_ T _interpolate(const Vector<TKey<T>> &p_keys, double p_time, InterpolationType p_interp, bool p_loop_wrap, bool *p_ok, bool p_backward = false) const;
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template <class T>
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_FORCE_INLINE_ void _track_get_key_indices_in_range(const Vector<T> &p_array, double from_time, double to_time, List<int> *p_indices, bool p_is_backward) const;
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double length = 1.0;
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real_t step = 0.1;
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LoopMode loop_mode = LOOP_NONE;
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/* Animation compression page format (version 1):
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*
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* Animation uses bitwidth based compression separated into small pages. The intention is that pages fit easily in the cache, so decoding is cache efficient.
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* The page-based nature also makes future animation streaming from disk possible.
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*
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* Actual format:
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*
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* num_compressed_tracks = bounds.size()
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* header : (x num_compressed_tracks)
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* -------
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* timeline_keys_offset : uint32_t - offset to time keys
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* timeline_size : uint32_t - amount of time keys
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* data_keys_offset : uint32_t offset to key data
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*
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* time key (uint32_t):
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* ------------------
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* frame : bits 0-15 - time offset of key, computed as: page.time_offset + frame * (1.0/fps)
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* data_key_offset : bits 16-27 - offset to key data, computed as: data_keys_offset * 4 + data_key_offset
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* data_key_count : bits 28-31 - amount of data keys pointed to, computed as: data_key_count+1 (max 16)
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*
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* data key:
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* ---------
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* X / Blend Shape : uint16_t - X coordinate of XYZ vector key, or Blend Shape value. If Blend shape, Y and Z are not present and can be ignored.
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* Y : uint16_t
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* Z : uint16_t
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* If data_key_count+1 > 1 (if more than 1 key is stored):
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* data_bitwidth : uint16_t - This is only present if data_key_count > 1. Contains delta bitwidth information.
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* X / Blend Shape delta bitwidth: bits 0-3 -
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* if 0, nothing is present for X (use the first key-value for subsequent keys),
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* else assume the number of bits present for each element (+ 1 for sign). Assumed always 16 bits, delta max signed 15 bits, with underflow and overflow supported.
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* Y delta bitwidth : bits 4-7
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* Z delta bitwidth : bits 8-11
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* FRAME delta bitwidth : 12-15 bits - always present (obviously), actual bitwidth is FRAME+1
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* Data key is 4 bytes long for Blend Shapes, 8 bytes long for pos/rot/scale.
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*
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* delta keys:
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* -----------
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* Compressed format is packed in the following format after the data key, containing delta keys one after the next in a tightly bit packed fashion.
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* FRAME bits -> X / Blend Shape Bits (if bitwidth > 0) -> Y Bits (if not Blend Shape and Y Bitwidth > 0) -> Z Bits (if not Blend Shape and Z Bitwidth > 0)
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*
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* data key format:
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* ----------------
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* Decoding keys means starting from the base key and going key by key applying deltas until the proper position is reached needed for interpolation.
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* Resulting values are uint32_t
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* data for X / Blend Shape, Y and Z must be normalized first: unorm = float(data) / 65535.0
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* **Blend Shape**: (unorm * 2.0 - 1.0) * Compression::BLEND_SHAPE_RANGE
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* **Pos/Scale**: unorm_vec3 * bounds[track].size + bounds[track].position
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* **Rotation**: Quaternion(Vector3::octahedron_decode(unorm_vec3.xy),unorm_vec3.z * Math_PI * 2.0)
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* **Frame**: page.time_offset + frame * (1.0/fps)
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*/
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struct Compression {
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enum {
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MAX_DATA_TRACK_SIZE = 16384,
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BLEND_SHAPE_RANGE = 8, // - 8.0 to 8.0
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FORMAT_VERSION = 1
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};
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struct Page {
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Vector<uint8_t> data;
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double time_offset;
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};
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uint32_t fps = 120;
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LocalVector<Page> pages;
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LocalVector<AABB> bounds; //used by position and scale tracks (which contain index to track and index to bounds).
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bool enabled = false;
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} compression;
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Vector3i _compress_key(uint32_t p_track, const AABB &p_bounds, int32_t p_key = -1, float p_time = 0.0);
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bool _rotation_interpolate_compressed(uint32_t p_compressed_track, double p_time, Quaternion &r_ret) const;
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bool _pos_scale_interpolate_compressed(uint32_t p_compressed_track, double p_time, Vector3 &r_ret) const;
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bool _blend_shape_interpolate_compressed(uint32_t p_compressed_track, double p_time, float &r_ret) const;
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template <uint32_t COMPONENTS>
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bool _fetch_compressed(uint32_t p_compressed_track, double p_time, Vector3i &r_current_value, double &r_current_time, Vector3i &r_next_value, double &r_next_time, uint32_t *key_index = nullptr) const;
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template <uint32_t COMPONENTS>
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bool _fetch_compressed_by_index(uint32_t p_compressed_track, int p_index, Vector3i &r_value, double &r_time) const;
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int _get_compressed_key_count(uint32_t p_compressed_track) const;
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template <uint32_t COMPONENTS>
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void _get_compressed_key_indices_in_range(uint32_t p_compressed_track, double p_time, double p_delta, List<int> *r_indices) const;
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_FORCE_INLINE_ Quaternion _uncompress_quaternion(const Vector3i &p_value) const;
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_FORCE_INLINE_ Vector3 _uncompress_pos_scale(uint32_t p_compressed_track, const Vector3i &p_value) const;
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_FORCE_INLINE_ float _uncompress_blend_shape(const Vector3i &p_value) const;
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// bind helpers
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private:
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bool _float_track_optimize_key(const TKey<float> t0, const TKey<float> t1, const TKey<float> t2, real_t p_allowed_velocity_err, real_t p_allowed_precision_error);
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bool _vector2_track_optimize_key(const TKey<Vector2> t0, const TKey<Vector2> t1, const TKey<Vector2> t2, real_t p_alowed_velocity_err, real_t p_allowed_angular_error, real_t p_allowed_precision_error);
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bool _vector3_track_optimize_key(const TKey<Vector3> t0, const TKey<Vector3> t1, const TKey<Vector3> t2, real_t p_alowed_velocity_err, real_t p_allowed_angular_error, real_t p_allowed_precision_error);
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bool _quaternion_track_optimize_key(const TKey<Quaternion> t0, const TKey<Quaternion> t1, const TKey<Quaternion> t2, real_t p_allowed_velocity_err, real_t p_allowed_angular_error, real_t p_allowed_precision_error);
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void _position_track_optimize(int p_idx, real_t p_allowed_velocity_err, real_t p_allowed_angular_err, real_t p_allowed_precision_error);
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void _rotation_track_optimize(int p_idx, real_t p_allowed_velocity_err, real_t p_allowed_angular_error, real_t p_allowed_precision_error);
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void _scale_track_optimize(int p_idx, real_t p_allowed_velocity_err, real_t p_allowed_angular_err, real_t p_allowed_precision_error);
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void _blend_shape_track_optimize(int p_idx, real_t p_allowed_velocity_err, real_t p_allowed_precision_error);
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void _value_track_optimize(int p_idx, real_t p_allowed_velocity_err, real_t p_allowed_angular_err, real_t p_allowed_precision_error);
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protected:
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bool _set(const StringName &p_name, const Variant &p_value);
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bool _get(const StringName &p_name, Variant &r_ret) const;
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void _get_property_list(List<PropertyInfo> *p_list) const;
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virtual void reset_state() override;
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static void _bind_methods();
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public:
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int add_track(TrackType p_type, int p_at_pos = -1);
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void remove_track(int p_track);
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int get_track_count() const;
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TrackType track_get_type(int p_track) const;
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void track_set_path(int p_track, const NodePath &p_path);
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NodePath track_get_path(int p_track) const;
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int find_track(const NodePath &p_path, const TrackType p_type) const;
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void track_move_up(int p_track);
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void track_move_down(int p_track);
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void track_move_to(int p_track, int p_to_index);
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void track_swap(int p_track, int p_with_track);
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void track_set_imported(int p_track, bool p_imported);
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bool track_is_imported(int p_track) const;
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void track_set_enabled(int p_track, bool p_enabled);
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bool track_is_enabled(int p_track) const;
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int track_insert_key(int p_track, double p_time, const Variant &p_key, real_t p_transition = 1);
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void track_set_key_transition(int p_track, int p_key_idx, real_t p_transition);
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void track_set_key_value(int p_track, int p_key_idx, const Variant &p_value);
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void track_set_key_time(int p_track, int p_key_idx, double p_time);
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int track_find_key(int p_track, double p_time, FindMode p_find_mode = FIND_MODE_NEAREST) const;
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void track_remove_key(int p_track, int p_idx);
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void track_remove_key_at_time(int p_track, double p_time);
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int track_get_key_count(int p_track) const;
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Variant track_get_key_value(int p_track, int p_key_idx) const;
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double track_get_key_time(int p_track, int p_key_idx) const;
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real_t track_get_key_transition(int p_track, int p_key_idx) const;
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bool track_is_compressed(int p_track) const;
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int position_track_insert_key(int p_track, double p_time, const Vector3 &p_position);
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Error position_track_get_key(int p_track, int p_key, Vector3 *r_position) const;
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Error position_track_interpolate(int p_track, double p_time, Vector3 *r_interpolation) const;
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int rotation_track_insert_key(int p_track, double p_time, const Quaternion &p_rotation);
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Error rotation_track_get_key(int p_track, int p_key, Quaternion *r_rotation) const;
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Error rotation_track_interpolate(int p_track, double p_time, Quaternion *r_interpolation) const;
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int scale_track_insert_key(int p_track, double p_time, const Vector3 &p_scale);
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Error scale_track_get_key(int p_track, int p_key, Vector3 *r_scale) const;
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Error scale_track_interpolate(int p_track, double p_time, Vector3 *r_interpolation) const;
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int blend_shape_track_insert_key(int p_track, double p_time, float p_blend);
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Error blend_shape_track_get_key(int p_track, int p_key, float *r_blend) const;
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Error blend_shape_track_interpolate(int p_track, double p_time, float *r_blend) const;
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void track_set_interpolation_type(int p_track, InterpolationType p_interp);
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InterpolationType track_get_interpolation_type(int p_track) const;
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int bezier_track_insert_key(int p_track, double p_time, real_t p_value, const Vector2 &p_in_handle, const Vector2 &p_out_handle);
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void bezier_track_set_key_value(int p_track, int p_index, real_t p_value);
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void bezier_track_set_key_in_handle(int p_track, int p_index, const Vector2 &p_handle, real_t p_balanced_value_time_ratio = 1.0);
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void bezier_track_set_key_out_handle(int p_track, int p_index, const Vector2 &p_handle, real_t p_balanced_value_time_ratio = 1.0);
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real_t bezier_track_get_key_value(int p_track, int p_index) const;
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Vector2 bezier_track_get_key_in_handle(int p_track, int p_index) const;
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Vector2 bezier_track_get_key_out_handle(int p_track, int p_index) const;
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#ifdef TOOLS_ENABLED
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void bezier_track_set_key_handle_mode(int p_track, int p_index, HandleMode p_mode, HandleSetMode p_set_mode = HANDLE_SET_MODE_NONE);
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HandleMode bezier_track_get_key_handle_mode(int p_track, int p_index) const;
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#endif // TOOLS_ENABLED
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real_t bezier_track_interpolate(int p_track, double p_time) const;
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int audio_track_insert_key(int p_track, double p_time, const Ref<Resource> &p_stream, real_t p_start_offset = 0, real_t p_end_offset = 0);
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void audio_track_set_key_stream(int p_track, int p_key, const Ref<Resource> &p_stream);
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void audio_track_set_key_start_offset(int p_track, int p_key, real_t p_offset);
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void audio_track_set_key_end_offset(int p_track, int p_key, real_t p_offset);
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Ref<Resource> audio_track_get_key_stream(int p_track, int p_key) const;
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real_t audio_track_get_key_start_offset(int p_track, int p_key) const;
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real_t audio_track_get_key_end_offset(int p_track, int p_key) const;
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int animation_track_insert_key(int p_track, double p_time, const StringName &p_animation);
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void animation_track_set_key_animation(int p_track, int p_key, const StringName &p_animation);
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StringName animation_track_get_key_animation(int p_track, int p_key) const;
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void track_set_interpolation_loop_wrap(int p_track, bool p_enable);
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bool track_get_interpolation_loop_wrap(int p_track) const;
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Variant value_track_interpolate(int p_track, double p_time) const;
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void value_track_set_update_mode(int p_track, UpdateMode p_mode);
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UpdateMode value_track_get_update_mode(int p_track) const;
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Vector<Variant> method_track_get_params(int p_track, int p_key_idx) const;
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StringName method_track_get_name(int p_track, int p_key_idx) const;
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void copy_track(int p_track, Ref<Animation> p_to_animation);
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void track_get_key_indices_in_range(int p_track, double p_time, double p_delta, List<int> *p_indices, Animation::LoopedFlag p_looped_flag = Animation::LOOPED_FLAG_NONE) const;
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void set_length(real_t p_length);
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real_t get_length() const;
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void set_loop_mode(LoopMode p_loop_mode);
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LoopMode get_loop_mode() const;
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void set_step(real_t p_step);
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real_t get_step() const;
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void clear();
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void optimize(real_t p_allowed_velocity_err = 0.01, real_t p_allowed_angular_err = 0.01, int p_precision = 3);
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void compress(uint32_t p_page_size = 8192, uint32_t p_fps = 120, float p_split_tolerance = 4.0); // 4.0 seems to be the split tolerance sweet spot from many tests
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// Helper math functions for Variant.
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static Variant add_variant(const Variant &a, const Variant &b);
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static Variant subtract_variant(const Variant &a, const Variant &b);
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static Variant blend_variant(const Variant &a, const Variant &b, float c);
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static Variant interpolate_variant(const Variant &a, const Variant &b, float c);
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Animation();
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~Animation();
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};
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VARIANT_ENUM_CAST(Animation::TrackType);
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VARIANT_ENUM_CAST(Animation::InterpolationType);
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VARIANT_ENUM_CAST(Animation::UpdateMode);
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VARIANT_ENUM_CAST(Animation::LoopMode);
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VARIANT_ENUM_CAST(Animation::LoopedFlag);
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VARIANT_ENUM_CAST(Animation::FindMode);
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#ifdef TOOLS_ENABLED
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VARIANT_ENUM_CAST(Animation::HandleMode);
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VARIANT_ENUM_CAST(Animation::HandleSetMode);
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#endif // TOOLS_ENABLED
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#endif // ANIMATION_H
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