axmol/cocos/3d/CCMeshVertexIndexData.h

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 Copyright (c) 2014-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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 The above copyright notice and this permission notice shall be included in
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#pragma once

#include <string>
#include <vector>

#include "3d/CCBundle3DData.h"
#include "3d/CCAABB.h"
#include "3d/CC3DProgramInfo.h"

#include "base/CCRef.h"
#include "base/CCVector.h"
#include "math/CCMath.h"
#include "renderer/CCMeshCommand.h"


NS_CC_BEGIN

/**
 * @addtogroup _3d
 * @{
 */

class MeshVertexData;

/**
 * the MeshIndexData class.
 * @brief the MeshIndexData contain all of the indices data which mesh need.
 * @js NA
 * @lua NA
 */
class CC_DLL MeshIndexData : public Ref
{
public:
    /** create  */
    static MeshIndexData* create(const std::string& id, MeshVertexData* vertexData, backend::Buffer* indexbuffer, const AABB& aabb);
    
    /**get index buffer*/
    backend::Buffer* getIndexBuffer() const { return _indexBuffer; }

    /**get vertex buffer*/
    backend::Buffer* getVertexBuffer() const;
    
    /**get vertex data*/
    const MeshVertexData* getMeshVertexData() const { return _vertexData; }
    
    /** aabb getter and setter */
    void setAABB(const AABB& aabb) { _aabb = aabb; }
    const AABB& getAABB() const { return _aabb; }
    
    /** id setter and getter */
    void setId(const std::string& id) { _id = id; }
    const std::string& getId() const { return _id; }
    
    /**primitive type setter & getter*/
    MeshCommand::PrimitiveType getPrimitiveType() const { return _primitiveType; }
    void   setPrimitiveType(MeshCommand::PrimitiveType primitive) { _primitiveType = primitive; }
    
CC_CONSTRUCTOR_ACCESS:
    MeshIndexData() = default;
    virtual ~MeshIndexData();
    
protected:
    backend::Buffer*    _indexBuffer = nullptr; //index buffer
    MeshVertexData*     _vertexData = nullptr; //vertex buffer, weak ref
    AABB                _aabb; // original aabb of the submesh
    std::string         _id; //id
    MeshCommand::PrimitiveType   _primitiveType = MeshCommand::PrimitiveType::TRIANGLE;
    
    friend class MeshVertexData;
    friend class Sprite3D;
};

/**
 * the MeshVertexData class.
 * @brief the MeshIndexData contain all of the vertices data which mesh need.
 */
class CC_DLL MeshVertexData : public Ref
{
    friend class Sprite3D;
    friend class Mesh;
public:
    /**create*/
    static MeshVertexData* create(const MeshData& meshdata);
    
    /** get vertexbuffer */
    backend::Buffer* getVertexBuffer() const { return _vertexBuffer; }
    
    /** get attributes count */
    ssize_t getMeshVertexAttribCount() const { return _attribs.size(); }
    
    /** get attribute by index */
    const MeshVertexAttrib& getMeshVertexAttrib(ssize_t index) const { return _attribs[index]; }
    
    /** get index data count */
    ssize_t getMeshIndexDataCount() const { return _indexs.size(); }
    /** get index data by index */
    MeshIndexData* getMeshIndexDataByIndex(int index) const { return _indexs.at(index); }
    /** get index data by id */
    MeshIndexData* getMeshIndexDataById(const std::string& id) const;
    
    ssize_t getSizePerVertex() const { return _sizePerVertex; }

    /**has vertex attribute?*/
    //TODO: will be removed!
    bool hasVertexAttrib(shaderinfos::VertexKey attrib) const;
    
CC_CONSTRUCTOR_ACCESS:
    MeshVertexData() = default;
    virtual ~MeshVertexData();

protected:
    
    backend::Buffer* _vertexBuffer = nullptr; // vertex buffer
    ssize_t  _sizePerVertex = -1;
    Vector<MeshIndexData*> _indexs; //index data
    std::vector<MeshVertexAttrib> _attribs; //vertex attributes
    
    int _vertexCount = 0; //vertex count
};

// end of 3d group
/// @}

NS_CC_END