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cocos2d-x/cocos/editor-support/spine/CurveTimeline.h

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+/******************************************************************************
+ * Spine Runtimes License Agreement
+ * Last updated January 1, 2020. Replaces all prior versions.
+ *
+ * Copyright (c) 2013-2020, 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.
+ *
+ * THE SPINE RUNTIMES ARE 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
+ * THE SPINE RUNTIMES, 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 */