liangchengyou / wow_english

  /******************************************************************************

   * 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
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   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   *****************************************************************************/
  

  #ifndef Spine_VertexAttachment_h
  #define Spine_VertexAttachment_h

  #include <spine/Attachment.h>

  #include <spine/Vector.h>
  
  namespace spine {
  	class Slot;
  
  	/// An attachment with vertices that are transformed by one or more bones and can be deformed by a slot's vertices.
  	class SP_API VertexAttachment : public Attachment {
  		friend class SkeletonBinary;
  		friend class SkeletonJson;
  		friend class DeformTimeline;
  
  		RTTI_DECL
  
  	public:
  		explicit VertexAttachment(const String& name);
  
  		virtual ~VertexAttachment();
  
  		void computeWorldVertices(Slot& slot, float* worldVertices);
  		void computeWorldVertices(Slot& slot, Vector<float>& worldVertices);
  
  		/// Transforms local vertices to world coordinates.
  		/// @param start The index of the first Vertices value to transform. Each vertex has 2 values, x and y.
  		/// @param count The number of world vertex values to output. Must be less than or equal to WorldVerticesLength - start.
  		/// @param worldVertices The output world vertices. Must have a length greater than or equal to offset + count.
  		/// @param offset The worldVertices index to begin writing values.
  		/// @param stride The number of worldVertices entries between the value pairs written.
  		void computeWorldVertices(Slot& slot, size_t start, size_t count, float* worldVertices, size_t offset, size_t stride = 2);
  		void computeWorldVertices(Slot& slot, size_t start, size_t count, Vector<float>& worldVertices, size_t offset, size_t stride = 2);
  
  		/// Gets a unique ID for this attachment.
  		int getId();

  		Vector<size_t>& getBones();

  		Vector<float>& getVertices();

  		size_t getWorldVerticesLength();
  		void setWorldVerticesLength(size_t inValue);

  		VertexAttachment* getDeformAttachment();
  		void setDeformAttachment(VertexAttachment* attachment);

  		void copyTo(VertexAttachment* other);

  	protected:
  		Vector<size_t> _bones;
  		Vector<float> _vertices;
  		size_t _worldVerticesLength;
  		VertexAttachment* _deformAttachment;

  	private:
  		const int _id;

  		static int getNextID();
  	};

  }

  #endif /* Spine_VertexAttachment_h */