119 lines
5.0 KiB
C++
119 lines
5.0 KiB
C++
/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated April 5, 2025. Replaces all prior versions.
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*
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* Copyright (c) 2013-2025, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software
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* or otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#ifndef Spine_Timeline_h
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#define Spine_Timeline_h
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#include <spine/RTTI.h>
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#include <spine/Array.h>
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#include <spine/SpineObject.h>
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#include <spine/Property.h>
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namespace spine {
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class Skeleton;
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class Event;
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enum MixFrom {
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MixFrom_Current = 0,
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MixFrom_Setup = 1,
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MixFrom_First = 2
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};
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/// The base class for all timelines.
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///
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/// See <a href='https://esotericsoftware.com/spine-applying-animations#Timeline-API'>Applying Animations</a> in the Spine
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/// Runtimes Guide.
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class SP_API Timeline : public SpineObject {
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RTTI_DECL_NOPARENT
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public:
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Timeline(size_t frameCount, size_t frameEntries);
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virtual ~Timeline();
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/// Applies this timeline to the skeleton.
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///
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/// See <a href='https://esotericsoftware.com/spine-applying-animations#Timeline-API'>Applying Animations</a> in the Spine
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/// Runtimes Guide.
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/// @param skeleton The skeleton the timeline is applied to. This provides access to the bones, slots, and other skeleton
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/// components the timelines may change.
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/// @param lastTime The last time in seconds this timeline was applied. Some timelines trigger only at discrete times, in
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/// which case all keys are triggered between lastTime (exclusive) and time (inclusive). Pass -1 the first time a
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/// timeline is applied to ensure frame 0 is triggered.
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/// @param time The time in seconds the skeleton is being posed for. Timelines find the frame before and after this time and
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/// interpolate between the frame values.
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/// @param events If any events are fired, they are added to this list. Can be NULL to ignore fired events or if no timelines
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/// fire events.
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/// @param alpha 0 applies setup or current values (depending on from), 1 uses timeline values, and intermediate values
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/// interpolate between them. Adjusting alpha over time can mix a timeline in or out.
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/// @param from If true, alpha transitions between setup and timeline values, setup values are used before the first
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/// frame (current values are not used). If false, alpha transitions between current and timeline values, no change
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/// is made before the first frame.
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/// @param add If true, for timelines that support it, their values are added to the setup or current values (depending on
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/// from).
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/// @param out True when the animation is mixing out, else it is mixing in. Used by timelines that perform instant
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/// transitions.
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/// @param appliedPose True to modify getAppliedPose(), else getPose() is modified.
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virtual void apply(Skeleton &skeleton, float lastTime, float time, Array<Event *> *events, float alpha, MixFrom from, bool add, bool out,
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bool appliedPose) = 0;
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/// True if this timeline supports additive blending.
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bool getAdditive() {
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return _additive;
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}
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/// True if this timeline sets values instantaneously and does not support interpolation between frames.
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bool getInstant() {
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return _instant;
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}
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size_t getFrameEntries();
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size_t getFrameCount();
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Array<float> &getFrames();
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float getDuration();
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virtual Array<PropertyId> &getPropertyIds();
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protected:
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void setPropertyIds(PropertyId propertyIds[], size_t propertyIdsCount);
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Array<PropertyId> _propertyIds;
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Array<float> _frames;
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size_t _frameEntries;
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bool _additive;
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bool _instant;
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};
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}
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#endif /* Spine_Timeline_h */
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