CurveTimeline.h
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/******************************************************************************
* Spine Runtimes License Agreement
* Last updated May 1, 2019. Replaces all prior versions.
*
* Copyright (c) 2013-2019, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS
* INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef Spine_CurveTimeline_h
#define Spine_CurveTimeline_h
#include <spine/Timeline.h>
#include <spine/Vector.h>
namespace spine {
/// Base class for frames that use an interpolation bezier curve.
class SP_API CurveTimeline : public Timeline {
RTTI_DECL
public:
explicit CurveTimeline(int frameCount);
virtual ~CurveTimeline();
virtual void apply(Skeleton& skeleton, float lastTime, float time, Vector<Event*>* pEvents, float alpha, MixBlend blend, MixDirection direction) = 0;
virtual int getPropertyId() = 0;
size_t getFrameCount();
void setLinear(size_t frameIndex);
void setStepped(size_t frameIndex);
/// Sets the control handle positions for an interpolation bezier curve used to transition from this keyframe to the next.
/// cx1 and cx2 are from 0 to 1, representing the percent of time between the two keyframes. cy1 and cy2 are the percent of
/// the difference between the keyframe's values.
void setCurve(size_t frameIndex, float cx1, float cy1, float cx2, float cy2);
float getCurvePercent(size_t frameIndex, float percent);
float getCurveType(size_t frameIndex);
protected:
static const float LINEAR;
static const float STEPPED;
static const float BEZIER;
static const int BEZIER_SIZE;
private:
Vector<float> _curves; // type, x, y, ...
};
}
#endif /* Spine_CurveTimeline_h */