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cocos2d-x/cocos/editor-support/spine/PathConstraint.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_PathConstraint_h
+#define Spine_PathConstraint_h
+
+#include <spine/ConstraintData.h>
+
+#include <spine/Vector.h>
+
+namespace spine {
+	class PathConstraintData;
+	class Skeleton;
+	class PathAttachment;
+	class Bone;
+	class Slot;
+
+	class SP_API PathConstraint : public Updatable {
+		friend class Skeleton;
+		friend class PathConstraintMixTimeline;
+		friend class PathConstraintPositionTimeline;
+		friend class PathConstraintSpacingTimeline;
+
+		RTTI_DECL
+
+	public:
+		PathConstraint(PathConstraintData& data, Skeleton& skeleton);
+
+		/// Applies the constraint to the constrained bones.
+		void apply();
+
+		virtual void update();
+
+		virtual int getOrder();
+
+		float getPosition();
+		void setPosition(float inValue);
+
+		float getSpacing();
+		void setSpacing(float inValue);
+
+		float getRotateMix();
+		void setRotateMix(float inValue);
+
+		float getTranslateMix();
+		void setTranslateMix(float inValue);
+
+		Vector<Bone*>& getBones();
+
+		Slot* getTarget();
+		void setTarget(Slot* inValue);
+
+		PathConstraintData& getData();
+
+		bool isActive();
+
+		void setActive(bool inValue);
+
+	private:
+		static const float EPSILON;
+		static const int NONE;
+		static const int BEFORE;
+		static const int AFTER;
+
+		PathConstraintData& _data;
+		Vector<Bone*> _bones;
+		Slot* _target;
+		float _position, _spacing, _rotateMix, _translateMix;
+
+		Vector<float> _spaces;
+		Vector<float> _positions;
+		Vector<float> _world;
+		Vector<float> _curves;
+		Vector<float> _lengths;
+		Vector<float> _segments;
+
+		bool _active;
+
+		Vector<float>& computeWorldPositions(PathAttachment& path, int spacesCount, bool tangents, bool percentPosition, bool percentSpacing);
+
+		static void addBeforePosition(float p, Vector<float>& temp, int i, Vector<float>& output, int o);
+
+		static void addAfterPosition(float p, Vector<float>& temp, int i, Vector<float>& output, int o);
+
+		static void addCurvePosition(float p, float x1, float y1, float cx1, float cy1, float cx2, float cy2, float x2, float y2, Vector<float>& output, int o, bool tangents);
+	};
+}
+
+#endif /* Spine_PathConstraint_h */